Page 1 GE Consumer & Industrial Multilin MIGII Digital Protection for Electrical Machines Instruction manual GEK-113188A Copyright © 2005 GE Multilin GE Multilin GE Multilin Avda. Pinoa, 10 215 Anderson Avenue 48170 Zamudio SPAIN L6E 1B3 Markham, ON -CANADA Tel: +34 94 485 88 00 Fax: +34 94 485 88 45 Tel: (905) 294 6222 Fax: (905) 294 8512 E-mail: gemultilin.euro@ge.com...
Page 3: Table Of Contents
TABLE OF CONTENTS 1. GETTING STARTED 1.1 INSPECTION CHECKLIST 1.2 ENERVISTA MII SETUP SOFTWARE 1.2.1 SYSTEM REQUIREMENTS ................1-4 1.2.2 SAFETY INSTRUCTIONS ................. 1-4 1.2.3 INSTALLATION....................1-5 1.3 MII RELAY FAMILY HARDWARE 1.3.1 MOUNTING & WIRING ..................1-11 1.3.2 COMMUNICATIONS..................1-11 1.3.3 FACEPLATE KEYPAD &...
Page 4: Enervista Mii Setup Software
TABLE OF CONTENTS 3. HARDWARE 3.1 DESCRIPTION 3.1.1 MECHANICAL DESCRIPTION................3-1 3.1.2 MOUNTING ......................3-2 3.1.3 REAR DESCRIPTION ..................3-3 3.2 WIRING 3.2.1 TYPICAL WIRING DIAGRAM................3-4 3.2.2 CONTROL POWER....................3-6 3.2.3 AC CURRENT TRANSFORMER INPUTS ............3-7 3.2.4 CONTACT INPUTS / OUTPUTS ...............3-8 3.2.5 OUTPUT CONTACTS CONFIGURATION ............3-9 3.2.6 OUTPUTS ISOLATION ..................3-10 3.2.7...
Page 5 TABLE OF CONTENTS 5.2.6 GROUND IOC 50G .................... 5-7 5.2.7 PHASE TOC 51P ....................5-8 5.2.8 GROUND TOC 51G................... 5-9 5.2.9 NUMBER OF STARTS 66 ................5-10 5.2.10 F87R (MIGII P)....................5-10 5.3 ADVANCED SETTINGS 5.3.1 ......................... 5-11 5.3.2 UNDERCURRENT 37 (MIGII Q) ..............5-12 5.3.3 NEGATIVE SEQUENCE IOC 46 ..............
Page 6 TABLE OF CONTENTS 9. RELAY COMMISSIONING 9.1 VISUAL INSPECTION 9.2 COMMENTS ON THE TEST EQUIPMENT 9.3 INSULATION TESTS 9.4 WIRING AND NECESSARY EQUIPMENT 9.5 TARGET LEDS 9.6 POWER SUPPLY TEST 9.7 COMMUNICATIONS 9.8 RELAY SETTING 9.9 CONTACT INPUTS 9.10 CONTACT OUTPUTS 9.11 RELAY METERING 9.11.1 CURRENT METERING ..................9-11...
Page 7 TABLE OF CONTENTS 9.24.3 PHASE / GROUND IOC SETTINGS (50P / 50G) (TABLE 2) ......9-30 9.24.4 UNDERCURRENT SETTINGS (37) (TABLE 2)..........9-31 9.24.5 CURRENT UNBALANCE SETTINGS (46P)(TABLE 2) ........9-31 9.24.6 LOCKED ROTOR (48) (TABLE 2)(MIGII Q) ............ 9-31 9.24.7 THERMAL IMAGE SETTINGS (49) (TABLE 2)(MIGII Q) ........
Page 8 TABLE OF CONTENTS C.5.1 FRAME STRUCTURE ..................16-8 C.6 ERRORS C.7 MODBUS MAP - SETTINGS C.8 MODBUS MAP- STATUS D. APPLICATION NOTES D.1 TRIP CIRCUIT SUPERVISION FOR MII-FAMILY RELAYS D.1.1 SETTINGS AND CONFIGURATION ..............17-3 E. MODEM CONNECTION E.1 HAYES MODEM E.2 V.25BIS MODEM E.3 SAMPLES OF SETTINGS FOR PARTICULAR MODEMS E.3.1 SPORTSTER FLASH X2 MODEM (HAYES)............18-4...
Page 9 1 GETTING STARTED 1 GETTING STARTED To help ensure years of trouble free operation, please read through the following chapter for information to help guide you through the initial installation procedures of your new relay. CAUTION: THE OPERATOR OF THIS INSTRUMENT IS ADVISED THAT IF THE EQUIPMENT IS USED IN A MANNER NOT SPECIFIED IN THIS MANUAL, THE PROTECTION PROVIDED BY THE EQUIPMENT MAY BE IMPAIRED INSTALLATION MUST BE ACCORDING TO THE NATIONAL ELECTRIC CODE OF THE APPROPRIATE COUNTRY GEK-113188A...
Page 10 Figure 1–1: RELAY IDENTIFICATION LABEL (A4454P23) Ensure that the mounting screws have been included with the relay. For product information, instruction manual updates, and the latest software updates, please visit the GE Multilin Home Page (www.GEindustrial.com/multilin). MIGII Digital Protection for Electrical Machines...
Page 11 1 GETTING STARTED 1.1 INSPECTION CHECKLIST Note: If there is any physical damage detected on the relay, or any of the contents listed are missing, please contact GE Multilin immediately at: EUROPE, MIDDLE EAST AND AFRICA: GE MULTILIN Av. Pinoa, 10 48170 Zamudio, Vizcaya (SPAIN) Tel.: (34) 94-485 88 54, Fax: (34) 94-485 88 38...
Page 12: System Requirements
In case of a firmware flashing process, due to the risk of losing communication, GE Multilin will not be responsible in case of a communication failure if the relay and PC are not grounded to the same point.
Page 13: Installation
After ensuring the minimum requirements for using EnerVista MII Setup are met (see previous section), use the following procedure to install the EnerVista MII Setup from the enclosed GE EnerVista CD. Insert the GE EnerVista CD into your CD-ROM drive.
Page 14 1.2 ENERVISTA MII SETUP SOFTWARE 1 GETTING STARTED Figure 1–4: If “Web” option is selected, choose from the list the software program related to the specific model and click the Download Now button to obtain the installation program. When EnerVista detects that there is already a version of the program in the Software Library, you can choose whether to install it directly or to check for more versions.
Page 15 1 GETTING STARTED 1.2 ENERVISTA MII SETUP SOFTWARE If we click the “Check for Updated Versions” button, the program will proceed to search for the different versions of set- up program from the Web. Figure 1–6: EnerVista Launchpad will obtain the installation program from the Web. If the version you already have is the last one on the Web, the following screen will appear Figure 1–7: 10.
Page 16 1.2 ENERVISTA MII SETUP SOFTWARE 1 GETTING STARTED 11. Double-click the installation program once its download is complete, to install the ENERVISTA MII SETUP software. 12. Select the complete path, including the new directory name, where the ENERVISTA MII SETUP will be installed. 13.
Page 17 1 GETTING STARTED 1.2 ENERVISTA MII SETUP SOFTWARE 16. The default program group where the application will be added to is shown in the Selected Program Folder window. Click Next to begin the installation process, and all the necessary program files will be copied into the chosen directory. Figure 1–10: 17.
Page 18 1.2 ENERVISTA MII SETUP SOFTWARE 1 GETTING STARTED 18. Click Finish to end the installation. The MII device will be added to the list of installed IEDs in the EnerVista Launchpad window, as shown below. Figure 1–12: 1-10 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 19: Mii Relay Family Hardware
HARDWARE chapter. To communicate with the relay’s RS485 port from a computer’s RS232 port, a RS232/RS485 converter box is required. GE Multilin offers F485, DAC300 and RS232/485 converters. This converter box is connected to the computer using a “straight through”...
Page 20: Using The Keypad And Display
1.4 USING THE KEYPAD AND DISPLAY 1 GETTING STARTED 1.4USING THE KEYPAD AND DISPLAY 1.4.1 HIERARCHICAL MENUS Figure 1–14: MOVING THROUGH THE HIERARCHICAL MENU As shown in Figure 1–14:, there are 3 hierarchical levels to access the information in the relay. The first level (Main screen) shows the current value for each phase (I Pressing the Menu button accesses the second level.
Page 21: Product Description
2 PRODUCT DESCRIPTION 2.1 SUMMARY 2 PRODUCT DESCRIPTION 2.1SUMMARY 2.1.1 GENERAL OVERVIEW PROTECTION INPUTS/OUTPUTS • Phase time overcurrent (51P) • 4 Current inputs (3 phases, 1 ground) • Programmable digital inputs and outputs • Phase instantaneous overcurrent (50P) • Ground time overcurrent (51G) •...
Page 22: Intro
300, 600, 1200, 4800, 9600 and 19200 bps. The rear RS485 port can be converted into an RS232 port or into a fiber optic (plastic or glass) serial port by using GE Multilin DAC300, F485 or RS232/485 module, or any other standard converter.
Page 23 2 PRODUCT DESCRIPTION 2.2 INTRO Figure 2–2: MIGII Q BLOCK DIAGRAM FOR MOTOR APPLICATIONS Figure 2–3: MIGII BLOCK DIAGRAM FOR TRANSFORMER APPLICATIONS GEK-113188A MIGII Digital Protection for Electrical Machines...
Page 24: Access Security Features
2.3 ACCESS SECURITY FEATURES 2 PRODUCT DESCRIPTION 2.3ACCESS SECURITY FEATURES MII family relays have several security features to restrict rear port operation when an operator is making changes by the local port or relay keypad, and/or to block access to setting changes for non-authorized users. The relay has an access priority system, giving priority to local access over remote access.
Page 25: Metering Algorithms
2 PRODUCT DESCRIPTION 2.4 METERING ALGORITHMS 2.4METERING ALGORITHMS During generator startup, the frequency value for voltage in terminals and currents that may appear if a fault occurs in that moment will depend of the machine speed. MIGII incorporates a metering algorithm for maximum values (not RMS) that is not influenced by the frequency value of the measured magnitude, as it happens with other algorithms such as DFT, which are affected by frequency.
Page 26: Overcurrent Elements
2.5 OVERCURRENT ELEMENTS 2 PRODUCT DESCRIPTION 2.5OVERCURRENT ELEMENTS 2.5.1 PHASE TIME OVERCURRENT ELEMENT (51P) A Phase Time Overcurrent unit is provided in the relay. MIG offers the following 4 current/time operation characteristics: Definite Time, Inverse Curve, Very Inverse Curve and Extremely Inverse Curve. One group of curves complies with the criteria specified in the IEC255-4 Standard and British Standard BS142 While another group complies with ANSI C37.90 standards A time dial can be applied to any of these curves to optimize co-ordination with other devices in the net.
Page 27 2 PRODUCT DESCRIPTION 2.5 OVERCURRENT ELEMENTS 2.5.1.2 ANSI CURVES Response times for ANSI curves are as follows: For 1.05<=V<20.00, tripping time will be: ≤ For V 20.00 tripping time will be the same as for 20.00 times the setting: Where: CURVE NAME Extremely Inverse 0.0399...
Page 28: Phase Instantaneous Overcurrent Element (50P)
2.5 OVERCURRENT ELEMENTS 2 PRODUCT DESCRIPTION =Time Dial setting (set in the relay by user). =I / I > 1.05 pickup setting =Input Current =Operate Time (sec) A, P, Q, B, K =Constants defined in the standard, as follows: Settings available for the phase time overcurrent unit allows the user to: enable/disable the unit; set the pickup value (between 0.1 –...
Page 29: Thermal Image Element
2 PRODUCT DESCRIPTION 2.6 THERMAL IMAGE ELEMENT (49) 2.6THERMAL IMAGE ELEMENT (49) This unit provides protection against overheating due to overloading conditions. The operating time curve is set from the time curve family, as a function of the time constant 1 (settable between 3 and 600 minutes).
Page 30: Negative Sequence Element
2.7 NEGATIVE SEQUENCE ELEMENT (46) 2 PRODUCT DESCRIPTION 2.7NEGATIVE SEQUENCE ELEMENT (46) The MIG relay incorporates a negative sequence protection function in order to detect system conditions that can cause unbalanced three-phase currents in the generator. As previously mentioned, these unbalances can be of higher magnitude than the load unbalance.
Page 31: Undercurrent (37)(Migii Q)
2 PRODUCT DESCRIPTION 2.8 UNDERCURRENT (37)(MIGII Q) 2.8UNDERCURRENT (37)(MIGII Q) Due to its high resolution, the undercurrent unit can be used to perform a stop or sequential trip of a generator in service. Its minimum setting value corresponds to the minimum level of loss in empty of the majority of generators (of diverse types). This unit can be enabled independently and set as required.
Page 32: Locked Rotor (48)(Migii Q)
2.9 LOCKED ROTOR (48)(MIGII Q) 2 PRODUCT DESCRIPTION 2.9LOCKED ROTOR (48)(MIGII Q) After a motor start, once the magnitude of any of either phases A, B or C exceeds the pickup level (1.01 to 10 xFLC) for a period of time specified by setting, a trip will occur. This feature may be used to indicate a stall condition when running. Not only does it protect the motor by taking it off line quicker than the thermal model (overload curve), it may also prevent or limit damage to the driven equipment that may occur if motor starting torque persists on jammed or broken equipment.
Page 33: Restricted Ground Differential Element (87R)(Migii Q)
2 PRODUCT DESCRIPTION 2.10 RESTRICTED GROUND DIFFERENTIAL ELEMENT (87R)(MIGII Q) 2.10RESTRICTED GROUND DIFFERENTIAL ELEMENT (87R)(MIGII Q) This unit detects ground faults in solidly grounded generators, through resistance and high impedance reactance. This unit calculates 3I current from the measured phase currents, and measures the generator ground 3I O terminal Oneutral current from the generator, present in the corresponding input.
Page 34: Maximum Number Of Starts
2.11 MAXIMUM NUMBER OF STARTS (66) 2 PRODUCT DESCRIPTION 2.11MAXIMUM NUMBER OF STARTS (66) Due to the existing similarities between generators and motors, the majority of functions included in MIGII apply to both types of machines. However, the present function is used specifically in motor protection. Starts per hour: When a motor start occurs, one of the STARTS PER HOUR timers is loaded with 60 minutes.
Page 35 2 PRODUCT DESCRIPTION 2.11 MAXIMUM NUMBER OF STARTS (66) Table 2–1: LIST OF EVENTS 46 Trip 49 Trip 87R Trip (MIGII P) Operation for stopped motor (MIGII Q) 66 Operation (MIGII Q) General trip 37 Trip enable/disable by digital input (MIGII Q) 50P Trip enable/disable by digital input 50G Trip enable/disable by digital input 48 Trip enable/disable by digital input (MIGII Q)
Page 36 2.11 MAXIMUM NUMBER OF STARTS (66) 2 PRODUCT DESCRIPTION • Ready (protection in service) • Auxiliary digital outputs • Digital inputs • Group 2 selection by digital input • EEPROM failure • Default settings/User settings • Date and time • Model •...
Page 37: Multiple Setting Groups
2 PRODUCT DESCRIPTION 2.12 MULTIPLE SETTING GROUPS 2.12MULTIPLE SETTING GROUPS Two independent Setting Groups are available in the permanent (non-volatile) memory of the MIGII relay. Only one of the two is active at a given time. Users can select which setting group is active using a setting, sending a command to the relay from the communications program, or by a digital input.
Page 38: Measurement And Self-Test
2.13 MEASUREMENT AND SELF-TEST 2 PRODUCT DESCRIPTION 2.13MEASUREMENT AND SELF-TEST 2.13.1 MEASUREMENT MIGII provides actual values for phase and ground currents and Thermal Image. Accuracy is 1% of injected current at rated current, and 3% of injected current in the complete range. 2.13.2 SELF-TEST Self-monitoring tests are carried out both when the unit is started up and during normal operation.
Page 39: User Interface
2 PRODUCT DESCRIPTION 2.14 USER INTERFACE 2.14USER INTERFACE 2.14.1 LED TARGETS There are 6 LED Targets in the front of the relay. The first one is green (‘READY’ -relay in service-) and cannot be configured; the second one is red and fixed for trip, while the other 4 can be configured by the user in OPTION1 and OPTION2 models.
Page 40: Software
2.14 USER INTERFACE 2 PRODUCT DESCRIPTION 2.14.4 SOFTWARE ® MIGII units are supplied together with ENERVISTA MII SETUP software, a Windows based software that allows communication with the relay for data viewing and retrieval, as well as oscillography, I/O configuration and logical configuration (in models where these features are available).
Page 41: Ordering Codes
2 PRODUCT DESCRIPTION 2.15 ORDERING CODES 2.15ORDERING CODES MIGII is supplied as 4U high and ¼ of a 19” rack wide.MIGII relays can be mounted in ¼ rack cases, one relay per case. The information required to completely specify the relay is provided in the following table: MIGII DESCRIPTION APPLICATION...
Page 42: Technical Specifications
2.16 TECHNICAL SPECIFICATIONS. 2 PRODUCT DESCRIPTION 2.16TECHNICAL SPECIFICATIONS. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 2.16.1 PROTECTION ELEMENTS Metering Algorithm: Maximum Pickup Level: 0.1 – 2.4 FLC in steps of 0.01 Dropout Level: 97% (typical) of Pickup ±3% in the complete range Level Accuracy: Curve Shapes: or ANSI Inverse, Very Inverse, Extremely Inverse, user defined...
Page 43 2 PRODUCT DESCRIPTION 2.16 TECHNICAL SPECIFICATIONS. 2.16.1.3 CURRENT UNBALANCE (46) Metering Algorithm: Negative sequence fundamental Pickup level: 0.05 - 0.99 FLC in steps of 0.01 Curve: Defined in section 2.5. Definite time K Constant: 1 to 100 in steps of 1 Definite time range: 0.00 to 600.00 in steps of 0.01 ±...
Page 44: Metering Functions
2.16 TECHNICAL SPECIFICATIONS. 2 PRODUCT DESCRIPTION 2.16.2 METERING FUNCTIONS 2.16.2.1 FUNDAMENTAL CURRENT ±1% at In Accuracy: ±3%Ifrom 0.5 to 2.0 In 2.16.3 INPUTS 2.16.3.1 AC CURRENT Secondary Rated Current: 1m 5 A depending on the selected model Frequency: 50 / 60 Hz (The unit can be set to 50 or 60 Hz) ground, secondary 2.16.3.2 DIGITAL INPUTS Voltage Level:...
Page 45: Outputs
2 PRODUCT DESCRIPTION 2.16 TECHNICAL SPECIFICATIONS. 2.16.5 OUTPUTS 2.16.5.1 OUTPUT RELAYS Configuration: 6 Electro-Mechanical Form C Contact Material: Silver alloy suited for inductive loads Maximum Operating Voltage: 440 Vac Continuous Mode Current: 16 A at 250 Vac. general purpose ¾ HP, 124 Vac 1-1/2 HP, 250 Vac 10A, 250 Vac, 0.4 PF, B300 pilot duty...
Page 46: Type Tests & Certifications
2.16 TECHNICAL SPECIFICATIONS. 2 PRODUCT DESCRIPTION 2.16.8 TYPE TESTS & CERTIFICATIONS The MIGII system complies with the following standards, which include the standards required by Community Directive 89/ 336 for the CE marking, in line with European standards. It also complies with the European directive requirements for low voltage, and the environmental and operating requirements established in ANSI standards C37.90, IEC 255-5, IEC 255-6 and IEC 68.
Page 47: Production Tests
2 PRODUCT DESCRIPTION 2.16 TECHNICAL SPECIFICATIONS. 2.16.9 PRODUCTION TESTS Insulation Test: IEC255-5 (Tested on CTs, Power Supply terminals, Contact Inputs and Contact Outputs) 2.16.10 APPROVALS Manufactured under an ISO9001 Registered system CE Marking GEK-113188A MIGII Digital Protection for Electrical Machines 2-27...
Page 48 2.16 TECHNICAL SPECIFICATIONS. 2 PRODUCT DESCRIPTION 2-28 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 49: Hardware
3 HARDWARE 3.1 DESCRIPTION 3 HARDWARE 3.1DESCRIPTION WARNING system incorporates electronic components that might be affected by electrostatic discharge MIGII currents flowing through certain component terminals. The main source of electrostatic discharges is human body, especially under low humidity conditions, with carpet floors or isolating shoes. If such conditions are present special care should be taken while manipulating modules.
Page 50: Mounting
3.1 DESCRIPTION 3 HARDWARE 3.1.2 MOUNTING The unit is designed for semi-flush mounting. The relay is secured to the panel with the 4 M6 screws provided with the unit. This allows the user access to the front keypad, display and communication port. The wiring is at the rear of the unit. The drilling dimensions are shown on the drilling dimension diagram.
Page 51: Rear Description
3 HARDWARE 3.1 DESCRIPTION 3.1.3 REAR DESCRIPTION The relay is wired through the terminal blocks located at the rear of the unit. In this terminal board, current terminals are shorted two-by-two when the transformer module is extracted, so that the CT secondary never remains open. Figure 3–3: REAR VIEW The magnetic module with the CTs is already connected to a female connector screwed to the case that incorporates shorting bars in the current inputs, so that it can be extracted without the need to short-circuit the current externally.
Page 52: Wiring
3.2 WIRING 3 HARDWARE 3.2WIRING 3.2.1 TYPICAL WIRING DIAGRAM Recommended cable section: 12/16 AWG Copper conductor only Tightening torque: 1.2 Nm Figure 3–4: TYPICAL WIRING DIAGRAM FOR MIGII P RELAY MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 53 3 HARDWARE 3.2 WIRING Figure 3–5: TYPICAL WIRING DIAGRAM FOR MIGII Q RELAY GEK-113188A MIGII Digital Protection for Electrical Machines...
Page 54: Control Power
3.2 WIRING 3 HARDWARE 3.2.2 CONTROL POWER CAUTION: CONTROL POWER SUPPLIED TO THE RELAY MUST MATCH THE RATED VOLTAGE OF THE RELAY. IF THE VOLTAGE IS APPLIED TO THE WRONG TERMINALS, DAMAGE MAY OCCUR. Table 3–1: CONTROL POWER VOLTAGE RANGE RANGE RATED VOLTAGE OPERATION RANGE...
Page 55: Ac Current Transformer Inputs
3 HARDWARE 3.2 WIRING 3.2.3 AC CURRENT TRANSFORMER INPUTS Each AC current input has an isolating transformer and an automatic mechanism that shorts the input when the module is withdrawn from the chassis. There are no internal ground connections on the current inputs. Current transformers with 1 A or 5 A rated secondary current may be used.
Page 56: Contact Inputs / Outputs
3.2 WIRING 3 HARDWARE 3.2.4 CONTACT INPUTS / OUTPUTS GE Power M anagement M IG II AUXILIARY VOLTAGE VDC or VAC Figure 3–7: CONTACT INPUTS CONNECTIONS Wet contacts must be connected to the inputs of the relay. A wet contact has one side connected to the positive terminal of an external DC power supply.
Page 57: Output Contacts Configuration
3 HARDWARE 3.2 WIRING 3.2.5 OUTPUT CONTACTS CONFIGURATION All output relays are form C relays. Only one of the two states of the form C relay is connected to the MIGII output terminal. For each output relay it is possible to select which state is preferred to have at the MIGII terminals, NC (normally closed) or NO (normally open).
Page 58: Outputs Isolation
3.2 WIRING 3 HARDWARE 3.2.6 OUTPUTS ISOLATION MII relays provide one trip contact, one alarm contact and four configurable contacts (option 1 and 2) sharing one common. An internal jumper, called Jx jumper, has been provided to allow splitting the four configurable outputs into two isolated groups.
Page 59 3 HARDWARE 3.2 WIRING Each output has a different configuration, and it is able to operate independently to the others. If Jx jumper is removed, the output contact configuration change as shown in the following figure: After removing the Jx Jumper, the outputs are divided in two groups: Independent and isolated. Group1: Terminals B8-B7: Provide one output contact combining OUT1 and OUT2 Group 2:...
Page 60 3.2 WIRING 3 HARDWARE b) JX REMOVED AND ONE OF THE TWO INTERNAL CONTACTS SET AS NORMALLY CLOSED: It is possible to change by hardware the contact configuration from normally open to normally closed (see the first point of this document). a) OUT1 NORMALLY CLOSED AND OUT2 NORMALLY OPEN: The hardware configuration corresponds to OUT1 NC and OUT2 NO.
Page 61: Rs232 Front Communications Port
3 HARDWARE 3.2 WIRING 3.2.7 RS232 FRONT COMMUNICATIONS PORT A 9-pin RS232C serial port is located on the front of the relay for programming with a portable (personal) computer. All that is required to use this interface is a personal computer running the ENERVISTA MII SETUP software. Next figure shows the communications cable configuration.
Page 62: Rs485 Communications Port
“A” and “B”, although many devices use terminals named “+” and “-“. As a general rule, terminals “A” should be connected to terminals “-“, and terminals “B” to “+”. There are exceptions to this rule, such as the GE ALPS and DDS family of relays.
Page 63: Communications
The ENERVISTA MII SETUP software package uses only ModBus protocols, and is designed to communicate with a single relay at a time. GE Multilin offers different communication software packages, such as GE-POWER and enerVista, which can be used to communicate simultaneously with several relays.
Page 64: Starting Communication
4.1 ENERVISTA MII SETUP SOFTWARE 4 COMMUNICATIONS 4.1.2 STARTING COMMUNICATION Before the physical connection to the relay, it is important that the user reviews the safety instructions detailed in section This section explains the importance of connecting both relay ground terminal and computer to a good grounding. Otherwise, communication may not be possible, or the relay and/or the computer could be damaged.
Page 65: File
4 COMMUNICATIONS 4.2 FILE 4.2FILE 4.2.1 NEW From the File – New option, the user can create a new file that will contain all the protection unit settings, as well as the relay configuration (inputs, outputs, events, oscillography, etc.). When the option is selected, the following screen will be shown. The user must select here a specific relay model matching exactly the relay model to which the settings and configuration will later be downloaded.
Page 66: Properties
4.2 FILE 4 COMMUNICATIONS 4.2.3 PROPERTIES From the File – Properties option, the program will show a screen including the relay model information, firmware version, etc., as shown on Figure 4–3: Figure 4–3: 4.2.4 GET INFO FROM RELAY The File – Get info from relay option enables the user to save the relay settings in a file on the hard disk of the computer.
Page 67: Print Setup
4 COMMUNICATIONS 4.2 FILE 4.2.6 PRINT SETUP The File – Print Setup option enables the user to configure the print setup for the settings file as shown in Figure 4–4: Figure 4–4: PRINTER SETUP 4.2.7 PRINT PREVIEW The File – Print Preview option displays a preview of the the settings print-out. It is also provides a quick view of all the relay settings at a glance, without having to navigate through the different menu trees.
Page 68: Print
4.2 FILE 4 COMMUNICATIONS 4.2.8 PRINT The File – Print option prints the relay settings using Windows default (active) printer. 4.2.9 CLOSE The File – Close option exits the program. It does not prompt for confirmation or save the open file. MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 69: Setpoint
4 COMMUNICATIONS 4.3 SETPOINT 4.3SETPOINT Clicking on the Setpoint menu entry gives access to Settings, Configuration, Logic Configuration and Clock. 4.3.1 SETTINGS The Settings sub-menu is the same for all M family relays, and shows all relay settings divided in two groups: Main Settings and Advanced Settings.
Page 70 4.3 SETPOINT 4 COMMUNICATIONS Figure 4–7: FUNCTION MENU Primarily there are four different setting formats: Boolean/Logic Settings (only two choices). For Boolean settings, the two possible options are shown so as the user can select which one is the appropriate, clicking with the mouse on the option desired.
Page 71: Main Settings
4 COMMUNICATIONS 4.3 SETPOINT 4.3.2 MAIN SETTINGS 4.3.2.1 GENERAL SETTINGS General settings describe and activate the electric system settings where the relay is going to operate. Some of these settings will be used with measure values presentation purposes; however, some of them are directly applied during the sampling and analogical-numerical conversion process (nominal frequency setting).
Page 72: Relay Configuration
4.3 SETPOINT 4 COMMUNICATIONS 4.3.4 RELAY CONFIGURATION Setpoint – Relay Configuration shows a dialog box to configure digital inputs, contact outputs and front panel LEDs, as shown in Figure 4–11: Figure 4–11: RELAY CONFIGURATION SETTINGS Each input, output and LED can be assigned an individual function (status bit) or an OR of a group of functions. Functions can also be assigned to virtual inputs and outputs, in order to allow greater flexibility when creating complex logics.
Page 73 4 COMMUNICATIONS 4.3 SETPOINT • OR: activates the OR button for the I/O configuration column (see previous point). The window that appears when the OR button is pressed can be seen in figure 4.12 Figure 4–12: OR ASSIGNMENT • NOT: when NOT checkbox is enabled, the logic is inverted. The element (input, output, LED) will actuate when the conditions are NOT fulfilled.
Page 74: Logic Configuration
4.3 SETPOINT 4 COMMUNICATIONS 4.3.5 LOGIC CONFIGURATION MII family relays can execute simple logic schemes that can be programmed from ENERVISTA MII SETUP. This logic schemes can be found at Setpoint – Logic Configuration. When one of the logics is selected, a new window will appear where the user can assign up to 8 inputs to the logic circuit. Each of these inputs can be a single function or status, as well as a logical union of several statuses.
Page 75: Clock
4 COMMUNICATIONS 4.3 SETPOINT 4.3.6 CLOCK The clock option opens a window with two choices: • Sending the PC date and time to the unit, this is, synchronizing the PC and the unit. • Selecting a date and a time and sending it to the relay. Figure 4–14: CLOCK Once the new date and time have been sent, the user can check in the status graph, or even in the relay itself, that the new date/time has been correctly entered.
Page 76: Actual Values
4.4 ACTUAL 4 COMMUNICATIONS 4.4ACTUAL 4.4.1 ACTUAL VALUES Actual - Actual values menu displays the Status Window shown in Figure 4–15:. This window shows internal relay information, measures, function status as well as additional information. There is a vertical scroll bar to navigate up and down the table to reach the desired information: •...
Page 77: Event Recorder
4 COMMUNICATIONS 4.4 ACTUAL 4.4.2 EVENT RECORDER Actual – Event Recorder option makes the last 24 relay events to be retrieved (up to 32) and displayed in the window appearing in Figure 4-16. Each event record is labeled with date, time (with 1msec. resolution), the cause of the event (pickup, trip of a certain function, etc.), and a list of the status of all inputs, outputs and functions during the event.
Page 78: Waveform Capture
4.4 ACTUAL 4 COMMUNICATIONS 4.4.3 WAVEFORM CAPTURE In the Actual - WAVEFORM CAPTURE option, the user can start the process to retrieve the Oscillography record stored in the relay. The program will request the path and filename where the file is to be stored, by means of the following form: Figure 4–17: OSCILLOGRAPHY RECORD This file can be viewed using GE_OSC software (the use of this software is described in manual GEK-105596).
Page 79: Operations
4 COMMUNICATIONS 4.5 OPERATIONS 4.5OPERATIONS From Operations menu the user can perform all possible operation commands. Figure 4–18: OPERATIONS MENU GEK-113188A MIGII Digital Protection for Electrical Machines 4-17...
Page 80: Communication
4.6 COMMUNICATION 4 COMMUNICATIONS 4.6COMMUNICATION The COMMUNICATION menu provides configuration options to communicate with the relay, as well as to perform a ModBus communication troubleshooting, or to update the relay with a new firmware. After making any change, pressing Store button saves the changes without exiting the window. Pressing OK saves and exits and pressing Cancel exits without saving changes.
Page 81 4 COMMUNICATIONS 4.6 COMMUNICATION 4.6.1.1 COMPUTER SETTINGS In COMPUTER SETTINGS box the user can configure computer communication settings, besides the connection (Control Type) and Startup Mode. Control Type defines the connection type that is going to be used: • No control type for serial connection (front RS232 or rear RS485), •...
Page 82 4.6 COMMUNICATION 4 COMMUNICATIONS Once the connection is established, when the user accesses any Setpoint or Operations, or Actual – Event Recorder menu entries for the first time, the program will ask the relay password. The following window will appear: Figure 4–22: COMMUNICATION CONTROL –...
Page 83 4 COMMUNICATIONS 4.6 COMMUNICATION 4.6.1.4 PRINT SCREEN When the Print Screen button is pressed, a new window appears asking if the user wants to capture the entire screen or only the active window (the one with all the communication parameters). Yes means capturing the whole screen and No means capturing only the communications window.
Page 84: Troubleshooting
4.6 COMMUNICATION 4 COMMUNICATIONS 4.6.2 TROUBLESHOOTING The TROUBLESHOOTING option is available only when the PC is communicating with a relay. It is intended to check the ModBus communication frames between the PC and the relay. In the upper part, the user can read any readable value from the relay (setpoints, actual values) by entering the desired hexadecimal address , the type of data to read (Setpoints, Actual Values), the number of registers (the length of each register is of 2 bytes) and the format of the data (integer, long,...
Page 85: Upgrade Firmware Version
4 COMMUNICATIONS 4.6 COMMUNICATION 4.6.3 UPGRADE FIRMWARE VERSION IMPORTANT WARNING: For upgrading the relay firmware to version 4.00 or later, it is mandatory that the EnerVista MII Setup version is 1.10 or higher. Otherwise it may result in damage to the relay The UPGRADE FIRMWARE VERSION option is active only when there is no active communication with the relay.
Page 86 If the update is to a model option with higher functionality (see OPTION 1, OPTION 2 and OPTION R in the model list), the program will request a password. This password can be obtained placing an order with GE Multilin. The following three parameters must be clearly indicated in the order: •...
Page 87 4 COMMUNICATIONS 4.6 COMMUNICATION Figure 4–30: COMPLETE It will take a few seconds for the relay to restart after the completion of the update process. Therefore, before unplugging the relay, please make sure that the relay main screen shows the analog inputs values. IMPORTANT NOTICE: ®...
Page 88: View 4.7.1 Traces
4.7 VIEW 4 COMMUNICATIONS 4.7VIEW 4.7.1 TRACES TRACES option is only active when the PC is communicating with the relay. If the communication is not established, to activate this option the user must switch communication on in Communication > Computer menu. When TRACES are active, the ModBus communication traces will be displayed in the lower part of the screen, as shown in Figure 4–31: Figure 4–31: MODBUS TRACES...
Page 89: Modbus Memory Map
4 COMMUNICATIONS 4.7 VIEW 4.7.2 MODBUS MEMORY MAP MODBUS MEMORY MAP option is only active when the PC is communicating with the relay. If the communication is not established, to activate this option the user must switch communication on in Communication > Computer menu. With MODBUS MEMORY MAP option the user can extract the complete memory map from the relay and print or save it in CSV format (to be later opened with any database or spreadsheet program as MS Excel).
Page 90: Languages
4.7 VIEW 4 COMMUNICATIONS 4.7.3 LANGUAGES LANGUAGES option is only active when there is no active communication with the relay. If the PC is communicating with the relay, to activate this option the user must switch communication off in Communication – Computer menu. Figure 4–33: LANGUAGES 4-28 MIGII Digital Protection for Electrical Machines...
Page 91: Settings Structure
5 SETTINGS 5.1 SETTINGS STRUCTURE 5 SETTINGS 5.1SETTINGS STRUCTURE All the settings of the MIGII relay, together with the procedures to change their value, are described in this chapter. First of all, a complete list of settings is shown; including ranges, units, step and factory default value. Then, the settings requiring more detailed comments are individually explained.
Page 92: Main Settings
5.2 MAIN SETTINGS 5 SETTINGS 5.2MAIN SETTINGS 5.2.1 PRODUCT SETUP UNDERCURRENT 37 (MIGII Q) MENU ENTER MAIN SETTINGS PRODUCT SETUP Range: Ready/Disable MAIN SETTINGS PRODUCT SETUP ENTER Default: Disable PRODUCT SETUP Relay Operation PRODUCT SETUP Range: 50/60 Frequency Default: 60 Hz PRODUCT SETUP Range: Intel/Motorola ModBus Format...
Page 93 5 SETTINGS 5.2 MAIN SETTINGS U N D E R C U R R E N T M E N U E N TE R M A IN S E T T IN G S R a n g e : Y e s/N o M A IN S E T T IN G S U N D E R C U R R E N T 3 7 E N T E R...
Page 94: Negative Sequence Ioc 46
5.2 MAIN SETTINGS 5 SETTINGS 5.2.2 NEGATIVE SEQUENCE IOC 46 MENU ENTER MAIN SETTINGS NEG SEQ IOC 46 Range: Yes/No MAIN SETTINGS NEG SEQ IOC 46 ENTER Default: No NEG SEQ IOC 46 Enable 46 NEG SEQ IOC 46 Range: Yes/No Trip enable 46 Default: Yes NEG SEQ IOC 46...
Page 95: Locked Rotor 48 (Migii Q)
5 SETTINGS 5.2 MAIN SETTINGS 5.2.3 LOCKED ROTOR 48 (MIGII Q) LOCKED ROTOR MENU ENTER MAIN SETTINGS Range: Yes/No MAIN SETTINGS LOCKED ROTOR 48 ENTER Default: No LOCKED ROTOR 48 Enable 48 LOCKED ROTOR 48 Range: Yes/No Trip enable 48 Default: Yes LOCKED ROTOR 48 Range: 1.01 - 10 FLC...
Page 96: Thermal Model (49)
5.2 MAIN SETTINGS 5 SETTINGS 5.2.4 THERMAL MODEL (49) T H E R M A L M O D E L M E N U E NT E R M A IN S E T T IN G S R an g e: Y es /N o M A IN S E T T IN G S T H E R M AL M O D E L 4 9 E N T E R...
Page 97: Phase Ioc 50P
D e fa u lt: Y e s P H A S E IO C 5 0P R a n ge : 0 .1 – 3 0 F L C P ic k u p 5 0 P D e fa u lt: 0 .5 F L C S te p: 0 .1...
Page 98: Phase Toc 51P
5.2 MAIN SETTINGS 5 SETTINGS 5.2.7 PHASE TOC 51P MENU ENTER MAIN SETTINGS PHASE TOC 51P Range: Yes/No MAIN SETTINGS PHASE TOC 51P ENTER Default: No PHASE TOC 51P Enable 51P PHASE TOC 51P Range: Yes/No Trip enable 51P Default: Yes PHASE TOC 51P Range: 0.1 –...
Page 99 5 SETTINGS 5.2 MAIN SETTINGS 5.2.8 GROUND TOC 51G GROUND TOC MENU ENTER MAIN SETTINGS Range: Yes/No MAIN SETTINGS GROUND TOC 51P ENTER Default: No GROUND TOC 51P Enable 51P GROUND TOC 51P Range: Yes/No Trip enable 51P Default: Yes GROUND TOC 51P Range: 0.1 –...
Page 100: Number Of Starts 66
S te p: 1 N U M B E R S TA R T S 6 6 R a n ge : 0 – 10 m in T im e to re s ta rt D e fa u lt: 1 0 m in S te p: 1 m in 5.2.10 F87R (MIGII P)
Page 101: Advanced Settings
5 SETTINGS 5.3 ADVANCED SETTINGS 5.3ADVANCED SETTINGS 5.3.1 MENU MAIN SETTINGS ADVANCED SETTINGS Range: 1 - 2 ADVANCED SETTINGS GENERAL ADVANCED ENTER Default: 1 GENERAL ADVANCED Setting Group Range: 50-300 ms GENERAL ADVANCED Default: 200 ms Trip Min Time NOTE ABOUT THE TRIP MIN TIME SETTING: This setting indicates the time during which the tripping contact will remain closed as a minimum in case of fault.
Page 102: Undercurrent 37 (Migii Q)
D e fa u lt: Y e s U N D E R C U R R E N T 3 7 R a n ge : 0 .1 – 0 .99 F L C P ic k u p 3 7 D e fa u lt: 0 .1 F L C...
Page 103: Negative Sequence Ioc 46
5 SETTINGS 5.3 ADVANCED SETTINGS 5.3.3 NEGATIVE SEQUENCE IOC 46 ADVANCED ENTER MENU NEG SEQ IOC 46 MAIN SETTINGS SETTINGS Range: Yes/No ADVANCED SETTINGS NEG SEQ IOC 46 ENTER Default: No NEG SEQ IOC 46 Enable 46 NEG SEQ IOC 46 Range: Yes/No Trip enable 46 Default: Yes...
Page 104: Locked Rotor 48 (Migii Q)
5.3 ADVANCED SETTINGS 5 SETTINGS 5.3.4 LOCKED ROTOR 48 (MIGII Q) LOCKED ROTOR ADVANCED ENTER MENU MAIN SETTINGS SETTINGS Range: Yes/No ADVANCED SETTINGS LOCKED ROTOR 48 ENTER Default: No LOCKED ROTOR 48 Enable 48 LOCKED ROTOR 48 Range: Yes/No Trip enable 48 Default: Yes LOCKED ROTOR 48 Range: 1.01 - 10 FLC...
Page 105: Thermal Model 49
5 SETTINGS 5.3 ADVANCED SETTINGS 5.3.5 THERMAL MODEL 49 T H E R M A L M O D E L A D V A N C E D E NT E R M E N U M A IN S E T T IN G S S E T T IN G S R an g e: Y es/N o A D V A N C E D S E T T IN G S...
Page 106: Phase Ioc 50P
D e fa u lt: Y e s P H A S E IO C 5 0P R a n ge : 0 .1 – 3 0 F L C P ic k u p 5 0P D e fa u lt: 0 .5 F L C S te p: 0 .1...
Page 107: Phase Toc 51P
5 SETTINGS 5.3 ADVANCED SETTINGS 5.3.8 PHASE TOC 51P ADVANCED MENU ENTER PHASE TOC 51P MAIN SETTINGS SETTINGS Range: Yes/No ADVANCED SETTINGS PHASE TOC 51P ENTER Default: No PHASE TOC 51P Enable 51P PHASE TOC 51P Range: Yes/No Trip enable 51P Default: Yes PHASE TOC 51P Range: 0.1 –...
Page 108: Number Of Starts (Migii Q)
S te p: 1 N U M B E R S T A R T S 6 6 R a n ge : 0 – 1 0 m in T im e to re s ta rt D e fa u lt: 1 0 m in...
Page 109: F87R (Migii P)
5 SETTINGS 5.3 ADVANCED SETTINGS 5.3.10 F87R (MIGII P) ADVANCED ENTER F87R MENU MAIN SETTINGS SETTINGS Range: Yes/No ADVANCED SETTINGS F87R ENTER Default: No F87R Enable 87R F87R Range: Yes/No Trip Enable 87R Default: Yes F87R Range: 1 – 100% K87R Default: 10% Step: 1%...
Page 110: Events And Oscillography Masks
5.3 ADVANCED SETTINGS 5 SETTINGS 5.3.12 EVENTS AND OSCILLOGRAPHY MASKS Event masks have two possible settings, YES or NO. If an action (e.g. the trip of a protection function) is set as YES, when the trip takes place an event will be generated. If it is set as NO, no event will be generated. ENERVISTA MII PC DEFAULT RANGE...
Page 111 5 SETTINGS 5.3 ADVANCED SETTINGS ENERVISTA MII PC DEFAULT RANGE STEP EVENT MASKS EVENT MASKS Table 2 selection by digital input Active table change Oscillo trigger by digital input Oscillo trig by input Oscillo trigger by command Oscillo trig by com. 52B Open/Closed by Digital Input 52B Breaker 52 Open/Closed...
Page 112: Oscillography Masks
5.3 ADVANCED SETTINGS 5 SETTINGS 5.3.13 OSCILLOGRAPHY MASKS OSCILLOGRAPHY MASK ENERVISTA MII SETUP DEFAULT RANGE STEP Oscillography masks Oscillography mask Oscillo by communications Oscillo by communic. Oscillo by digital input Oscillo by Digital Input Oscillo by trip Oscillo by trip Oscillo by pickup Oscillo by pickup 5.3.14 MIGII INTERNAL STATUSES...
Page 113: Time Synchronization
5 SETTINGS 5.4 TIME SYNCHRONIZATION 5.4TIME SYNCHRONIZATION MIGII includes an internal clock to time tag events. This clock can be either synchronized with the computer clock or set manually using the ENERVISTA MII SETUP software program (see Setpoints – Clock). It can also be set to a given Date and Time using the faceplate keypad (DATE &...
Page 114 5.4 TIME SYNCHRONIZATION 5 SETTINGS 5-24 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 115: Input Configuration
6 I/0 CONFIGURATION 6.1 INPUT CONFIGURATION 6 I/0 CONFIGURATION 6.1INPUT CONFIGURATION 6.1.1 DESCRIPTION OF INPUTS MIGII incorporates 2 digital inputs, which can be configured using the ENERVISTA MII SETUP software (Setpoint > Relay Configuration). The default input configuration is as follows: Input 1: Emergency Reset Input 2:...
Page 116 6.1 INPUT CONFIGURATION 6 I/0 CONFIGURATION assigned to the input, and all of them have been inverted. Finally, to validate the selected configuration, the user must click on the OK button both in the "OR ASSIGNMENT" and the "I/O CONFIGURATION" screens.. Figure 6–2: INPUT CONFIGURATION WITH MORE THAN ONE FUNCTION (OR) MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 117 6 I/0 CONFIGURATION 6.1 INPUT CONFIGURATION SIMPLE ACTION INPUT CONFIGURATION (ONE ELEMENT ASSIGNMENT) To assign breaker status input 52A to a digital input, select Breaker 52a from the I/O configuration selection list. The OR checkbox must not be selected. The simplest way of programming an input is to assign it to a single element. For this purpose, the user must simply open the I/O configuration selection list of the desired input.
Page 118: Input Elements
6.1 INPUT CONFIGURATION 6 I/0 CONFIGURATION 6.1.2 INPUT ELEMENTS The following table shows the list of elements that can be assigned to each input. The table is divided into groups NO DEFINITION INPUT NOT ASSIGNED INHIBITIONS 1 BY DIGITAL 37 disabled 37 trip disabled INPUT 50P disabled...
Page 119: Outputs And Leds Configuration
6 I/0 CONFIGURATION 6.2 OUTPUTS AND LEDS CONFIGURATION 6.2OUTPUTS AND LEDS CONFIGURATION 6.2.1 DESCRIPTION OF OUTPUTS AND LEDS MIGII incorporates 6 outputs and 6 LED indicators. 4 of the outputs and LED indicators are user configurable, and can only be programmed using ENERVISTA MII SETUP software (SETPOINT – RELAY CONFIGURATION). The first two LEDs are fixed for READY (System ready) and TRIP.
Page 120: Output And Led Elements
6.2 OUTPUTS AND LEDS CONFIGURATION 6 I/0 CONFIGURATION Local/Remote Output/LED Elements from different groups cannot be included in an OR type logic. 6.2.2 OUTPUT AND LED ELEMENTS The list of elements that can be assigned to the different outputs and LEDs is divided into the following groups: Table 6–2: OUTPUTS AND LEDS ELEMENTS NO DEFINITION OUTPUT OR LED NOT ASSIGNED...
Page 121 6 I/0 CONFIGURATION 6.2 OUTPUTS AND LEDS CONFIGURATION Table 6–2: OUTPUTS AND LEDS ELEMENTS PHASE PICKUPS 1 37a Pickup Pickup of Phase A 37 element (MIGII Q) 37b Pickup Pickup of Phase B 37 element (MIGII Q) 37c Pickup Pickup of Phase C 37 element (MIGII Q) 50Pa Pickup Pickup of Phase A 50P element 50Pb Pickup...
Page 122 6.2 OUTPUTS AND LEDS CONFIGURATION 6 I/0 CONFIGURATION Table 6–2: OUTPUTS AND LEDS ELEMENTS MIXED 1 52 Closed Breaker closed Motor started Motor status (Started = 1, Stopped = 0) EEPROM failure Active when a failure is detected in EEPROM management User settings This element is green when the default settings are active and red when the user’s settings are active...
Page 123: Logic Configuration
7 LOGIC CONFIGURATION 7.1 LOGIC DESCRIPTION 7 LOGIC CONFIGURATION 7.1LOGIC DESCRIPTION MIGII incorporates 4 logic diagrams that can be configured independently using the ENERVISTA MII SETUP software (Setpoint> Logic Configuration). The default logic configuration is the following: LOGIC I/O CONFIGURATION PICKUP TIME DROPOUT TIME No Definition...
Page 124 7.1 LOGIC DESCRIPTION 7 LOGIC CONFIGURATION As shown on the example above, it is also possible to apply logic ORs to each AND logic input, as well as to invert the AND outputs. For this purpose, please refer to the "I/O Configuration" section in this manual. Logics can be assigned both to LEDs or outputs, so that each user can create the desired configuration for a specific application.
Page 125 7 LOGIC CONFIGURATION 7.1 LOGIC DESCRIPTION Time diagram for the logic configuration:: Pickup Dropout Timer Timer Logic input Logic output Pickup Dropout Timer Timer Logic input Logic output Pickup Dropout Dropout Timer Timer Timer Pickup timer Logic input Logic output GEK-113188A MIGII Digital Protection for Electrical Machines...
Page 126 7.2 LOGIC ELEMENTS 7 LOGIC CONFIGURATION 7.2LOGIC ELEMENTS The list of elements that can be assigned in the configurable logic is divided into the following groups: GROUP NO DEFINITION OUTPUT OR LED NOT ASSIGNED CONFIGURATIONS Logic 1 Output signal from logic 1 Logic 2 Output signal from logic 2 Logic 3...
Page 127: Logic Elements
7 LOGIC CONFIGURATION 7.2 LOGIC ELEMENTS ELEMENT PICKUPS 2 46 Pickup 46 element Pickup 48 Pickup 48 element Pickup (MIGII Q) 51P Pickup 51P element Pickup 51G Pickup 51G element Pickup 87R Pickup 87R element Pickup (MIGII P) Pickup by Stop Pickup caused by a stop (MIG II Q) 66 Operation Operation of element 66 (MIGII Q)
Page 128 7.2 LOGIC ELEMENTS 7 LOGIC CONFIGURATION INPUTS General input General input element Sett. change disable Active means that settings or groups cannot be changed. It is only possible to switch to Group 2 by digital input Group change 52 closed Breaker closed Motor started Motor status (Started=1, Stopped =0)
Page 129: Keypad And Display
8 KEYPAD AND DISPLAY 8.1 DESCRIPTION 8 KEYPAD AND DISPLAY 8.1DESCRIPTION MIGII has five types of display messages: actual values, main settings, advanced settings, operations and date & time. Actual values are values that are measured by the relay, such as currents; digital values of the relay, and can be digital inputs, outputs status and others;...
Page 130: Faceplate Keypad
8.2 FACEPLATE KEYPAD 8 KEYPAD AND DISPLAY 8.2FACEPLATE KEYPAD faceplate keypad is made up of five keys, as shown in Figure 8–1: MIGII Figure 8–1: KEYPAD The main screen is the one that shows the three phase and neutral currents. If the relay is not showing the main screen, you can return to it from any other screen by pressing the Escape key as many times as necessary until exiting the menu structure.
Page 131: Alphanumeric Display And Leds
8 KEYPAD AND DISPLAY 8.3 ALPHANUMERIC DISPLAY AND LEDS 8.3ALPHANUMERIC DISPLAY AND LEDS 8.3.1 DISPLAY The faceplate display of the MIGII relay is a 16 column x 2-row characters alphanumeric LCD display. Messages in the display are shown in the English language. Figure 8–2: DISPLAY The display contrast can be modified simultaneously pressing Escape + arrow: •...
Page 132: Leds
8.3 ALPHANUMERIC DISPLAY AND LEDS 8 KEYPAD AND DISPLAY 8.3.2 LEDS The faceplate of the MIGII relay has six LEDs that show the relay status, as well as pickup and trip status. LEDs are grouped in two columns and three rows, as shown in Figure 8–3: Figure 8–3: LEDS The two LEDs in the first row (Ready and Trip) are not configurable.
Page 133: Operations
8 KEYPAD AND DISPLAY 8.4 OPERATIONS 8.4OPERATIONS 8.4.1 ONE KEY OPERATION AND LAST TRIP DATA From the main screen, pressing Enter key the display shows a one-key operation menu that presents measures, thermal image value and up to five latest trip element data with the element that has tripped, the phase and the secondary current value (not affected by CT ratio), with the day, month and time of the trip.
Page 134: Hmi Password
Once it has been entered, the relay asks for the new password. Here is an example of how to change from HMI password value 1 to 2: If you don’t know the programmed password please contact GE Multilin Technical Service and have the encoded password value shown in Main Settings > Product Setup > HMI handy.
Page 135 8 KEYPAD AND DISPLAY 8.4 OPERATIONS MENU TREE MENU ENTER MIGII ACTUAL VALUES Order Code MIGIIPI55E00HI00 Firmware Rev. 4.01 Date & Time 01-06-05 11:46:24 Relay Name MIG II Serial Number 999999 Phase A Current 0.00 Phase B Current 0.00 Phase C Current 0.00 Ground Current 0.00...
Page 136 8.4 OPERATIONS 8 KEYPAD AND DISPLAY MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 137 8 KEYPAD AND DISPLAY 8.4 OPERATIONS GEK-113188A MIGII Digital Protection for Electrical Machines...
Page 138 8.4 OPERATIONS 8 KEYPAD AND DISPLAY 8-10 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 139 8 KEYPAD AND DISPLAY 8.4 OPERATIONS GEK-113188A MIGII Digital Protection for Electrical Machines 8-11...
Page 140 8.4 OPERATIONS 8 KEYPAD AND DISPLAY 8-12 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 141 8 KEYPAD AND DISPLAY 8.4 OPERATIONS GEK-113188A MIGII Digital Protection for Electrical Machines 8-13...
Page 142 8.4 OPERATIONS 8 KEYPAD AND DISPLAY 8-14 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 143 8 KEYPAD AND DISPLAY 8.4 OPERATIONS GEK-113188A MIGII Digital Protection for Electrical Machines 8-15...
Page 144 8.4 OPERATIONS 8 KEYPAD AND DISPLAY 8-16 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 145: Visual Inspection
9 RELAY COMMISSIONING 9.1 VISUAL INSPECTION 9 RELAY COMMISSIONING 9.1VISUAL INSPECTION Unpack the relay and verify that no parts are broken and that the relay has not suffered any damage during transit. Verify that the model number indicated on the faceplate corresponds to the model ordered. GEK-113188A MIGII Digital Protection for Electrical Machines...
Page 146: Comments On The Test Equipment
9.2 COMMENTS ON THE TEST EQUIPMENT 9 RELAY COMMISSIONING 9.2COMMENTS ON THE TEST EQUIPMENT All devices that work with alternating current are influenced by frequency. Since a non-sinusoidal waveform results from a fundamental frequency wave plus a series of harmonics of this fundamental wave, it can be concluded that devices working with alternating current (relays) are influenced by the applied waveform.
Page 147: Insulation Tests
9 RELAY COMMISSIONING 9.3 INSULATION TESTS 9.3INSULATION TESTS The independent groups on the relay are as follows: Group 1: A1, A2 Power Supply Group 2: C1 to C8 Current Transformers Group 3: A8, A9, A10 Contact Inputs Group 4: A5, A6 Trip Group 5: B7, B8, B9, B10, A7...
Page 148: Wiring And Necessary Equipment
9.4 WIRING AND NECESSARY EQUIPMENT 9 RELAY COMMISSIONING 9.4WIRING AND NECESSARY EQUIPMENT Necessary equipment: • 1 AC current source. • 1 DC voltage power supply. • 1 timing device. • 1 Multi-meter. Optionally, it is advisable to have a PC available, with the ENERVISTA MII SETUP software installed. Relay wiring diagram.
Page 149: Target Leds
9 RELAY COMMISSIONING 9.5 TARGET LEDS 9.5TARGET LEDS Check that pressing the “ESC/RESET” button for more than 3 seconds, all the front target LEDs light up and reset. GEK-113188A MIGII Digital Protection for Electrical Machines...
Page 150: Power Supply Test
9.6 POWER SUPPLY TEST 9 RELAY COMMISSIONING 9.6POWER SUPPLY TEST Under these tripping conditions check that the output is open, Voltage test and maximum consumption is shown below: Model “LO” (24 - 48 Vdc) Voltage (Vdc) Maximum Consumption (mA) Model “HI” (110 - 250 Vdc 120-230 Vac) Voltage (Vdc) Maximum Consumption (mA)
Page 151: Communications
PC and the relay (refer to figure 3-10). If the front port is used, a straight through cable is needed. If the rear RS485 port is used, an RS485/RS232 converter is needed. GE Multilin offers DAC300, F485 or RS232/485 converters.
Page 152: Relay Setting
9.8 RELAY SETTING 9 RELAY COMMISSIONING 9.8RELAY SETTING When the relay is shipped from the factory, it comes with a default set of settings, which act as the starting point for the following tests. Since the MIGII relay has a large number of settings, a list of all the settings necessary for all tests will not be given here, but rather only the specific settings required for each test indicated.
Page 153: Contact Inputs
9 RELAY COMMISSIONING 9.9 CONTACT INPUTS 9.9CONTACT INPUTS Sequentially apply the rated voltage to input CC1 and CC2 (A8-A10 and A9-A10). Check that when voltage is applied to one contact input, only this input gets active, and the other one remains inactive. Use the INFORMATION menu on the faceplate or a PC and the ACTUAL VALUES menu in the ENERVISTA MII SETUP program (Actual>...
Page 154: Contact Outputs
9.10 CONTACT OUTPUTS 9 RELAY COMMISSIONING 9.10CONTACT OUTPUTS The default configuration of outputs and LEDs is as follows: TERMINALS B5-B6 Alarm A5-A6 Trip B7-A7 Out1 B8-A7 Out2 B9-A7 Out3 B10-A7 Out4 LEDs READY TRIP THERMAL (49) OVERCURRENT (50/51) UNBALANCE (46) PICKUP Outputs and LEDs can be checked during the following tests: 9-10...
Page 155: Relay Metering
9 RELAY COMMISSIONING 9.11 RELAY METERING 9.11RELAY METERING 9.11.1 CURRENT METERING PHASE CURRENT Set the relay to 50Hz and apply the following currents: PHASE Ia (Amps) 0.5 x In (phase) Ib (Amps) 0.1 x In (phase) 1 x In (phase) Ic (Amps) 2 x In (phase) Check that the relay measures Ia, Ib and Ic with an accuracy better than 3%.
Page 156: Phase Ioc High Setting Element (50P)
9.12 PHASE IOC HIGH SETTING ELEMENT (50P) 9 RELAY COMMISSIONING 9.12PHASE IOC HIGH SETTING ELEMENT (50P) Enable only 50P element. Set its time delay and pickup to the minimum possible With 0.9 times the pickup current the relay should not trip. With 1.1 times the pickup current the relay should trip within 60 ms.
Page 157: Ground Ioc Low Setting Element (50G)
9 RELAY COMMISSIONING 9.13 GROUND IOC LOW SETTING ELEMENT (50G) 9.13GROUND IOC LOW SETTING ELEMENT (50G) Enable only 50G element. Set its time delay and pickup to the minimum possible With 0.9 times the pickup current the relay should not trip. With 1.1 times the pickup current the relay should trip in between 10 to 50 ms.
Page 158: Phase Toc Element (51P)
9.14 PHASE TOC ELEMENT (51P) 9 RELAY COMMISSIONING 9.14PHASE TOC ELEMENT (51P) 3 Available curves IEC or ANSI (Inverse, Very Inverse, Extremely Inverse) and the Definite Time are tested with three points for each curve (one “no-trip point” and two “trip points”). This gives us a total of 12 points for each protection element. Each point is tested with a different pick up and dial in order to test the whole range of the relay.
Page 159: Ansi Inverse Curve
9 RELAY COMMISSIONING 9.14 PHASE TOC ELEMENT (51P) 9.14.4 ANSI INVERSE CURVE Set the relay as follows: 51P SETTINGS GROUP Curve INVERSE Time Dial Apply 0.9 times the pickup current into phase A and the relay should not trip. Apply 1.5 times the pickup current and the relay should trip between 36.2 and 51.3 sec. Apply 5 times the pickup current and the relay should trip between 3.88 and 4.27 sec.
Page 160: Ground Toc Element (51G)
9.15 GROUND TOC ELEMENT (51G) 9 RELAY COMMISSIONING 9.15GROUND TOC ELEMENT (51G) Enable 51G element only and set its current pickup value to the minimum possible. 9.15.1 IEC INVERSE CURVE Set the relay as follows: 51G SETTINGS GROUP Curve INVERSE Time Dial Apply 0.9 times the pickup current at the ground terminals and the relay should not trip.
Page 161: Ansi Inverse Curve
9 RELAY COMMISSIONING 9.15 GROUND TOC ELEMENT (51G) 9.15.4 ANSI INVERSE CURVE Set the relay as follows: 51G SETTINGS GROUP Curve INVERSE Time Dial Apply 0.9 times the pickup current at the ground terminals and the relay should not trip. Apply 1.5 times the pickup current and the relay should trip between 36.2 and 51.3 sec.
Page 162: Thermal Image Element
9.16 THERMAL IMAGE ELEMENT (49) 9 RELAY COMMISSIONING 9.16THERMAL IMAGE ELEMENT (49) This element considers direct and inverse components, generating a I value, and using the logarithmic curve derived from the equation below: Where: 9.16.1 DIRECT SEQUENCE TEST Note: Numerical examples are for In = 5 A Enable 49 function only.
Page 163: Inverse Sequence Test
9 RELAY COMMISSIONING 9.16 THERMAL IMAGE ELEMENT (49) 9.16.2 INVERSE SEQUENCE TEST Apply 0.5 X In pure direct sequence current (0.5 x In to each phase). The relay should trip in 10.92 s (±5%). 9.16.3 SINGLE-PHASE SIGNAL TEST Apply 1.2 x In only to phase A. The relay should trip in 11.37 s (±5%). GEK-113188A MIGII Digital Protection for Electrical Machines 9-19...
Page 164: Locked Rotor
9.17 LOCKED ROTOR (48) 9 RELAY COMMISSIONING 9.17LOCKED ROTOR (48) Enable only unit 48. Set the relay as follows: FLA = In 48 Tap = 2 x FLA T = 4 s Blq 48 = 0 Check the following: • Apply 90% of 48 Tap;...
Page 165: Restricted Ground Differential Current (87R)
9 RELAY COMMISSIONING 9.18 RESTRICTED GROUND DIFFERENTIAL CURRENT (87R) 9.18RESTRICTED GROUND DIFFERENTIAL CURRENT (87R) NOTE: Before doing neutral currents differential test (87R), it is necessary to wire the relay as shown in section 3.2.1. Special Wiring Diagram for unit 87R, from chapter 3 Hardware. The trip condition for this protection element is as follows: Id >...
Page 166 9.18 RESTRICTED GROUND DIFFERENTIAL CURRENT (87R) 9 RELAY COMMISSIONING Table 9–2: FOR A RATED CURRENT OF 5 AMP. IN PHASES AND 5 AMP. IN NEUTRAL IN TRIP Apply: Ia: 1 amp@0º Ib: 1 amp@120º In: 1 amp@60º Check that the relay does not trip. Apply: Ia: 1 amp@0º...
Page 167: Undercurrent Unit
9 RELAY COMMISSIONING 9.19 UNDERCURRENT UNIT (37) 9.19UNDERCURRENT UNIT (37) This unit will trip when the current level is between two thresholds, being the upper limit Tap 37, and the lower limit 5% of FLA. Enable only Unit 37. Set (for In=5 A): FLA = 1.2 * In = 1.2 * 5 A = 6 A Upper limit: TAP 37 = 0.27 ⇒...
Page 168: Negative Sequence - Unbalance
9.20 NEGATIVE SEQUENCE – UNBALANCE (46) 9 RELAY COMMISSIONING 9.20NEGATIVE SEQUENCE – UNBALANCE (46) WARNING: Currents to be applied are negative sequence currents. This unit can be set for operating with a definite time, or according to the following equation: The TAP46 setting fixes a value below which the relay will not trip.
Page 169: Maximum Number Of Starts And Time To Restart
9 RELAY COMMISSIONING 9.21 MAXIMUM NUMBER OF STARTS AND TIME TO RESTART (66) 9.21MAXIMUM NUMBER OF STARTS AND TIME TO RESTART (66) This units disconnects the motor when a selectable number of consecutive starts is reached within one hour. The detected starts are entered in a time window, and they are removed after an hour.
Page 170: Time Synchronization
9.22 TIME SYNCHRONIZATION 9 RELAY COMMISSIONING 9.22TIME SYNCHRONIZATION Synchronize the relay date and time with the PC, using the ENERVISTA MII SETUP communications program (SETPOINT – CLOCK). Check using the keypad and display that the relay is actually in synchronism with the computer. 9-26 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 171: User Settings
9 RELAY COMMISSIONING 9.23 USER SETTINGS 9.23USER SETTINGS The following pages intend to be useful to register the user settings. They can be used as a guide or template or to record , in case your company does not provide a proprietary form sheet. the relay settings 9.23.1 GENERAL SETTINGS ENERVISTA MII PC...
Page 172: Phase / Ground Ioc Settings (50P / 50G)
9.23 USER SETTINGS 9 RELAY COMMISSIONING 9.23.3 PHASE / GROUND IOC SETTINGS (50P / 50G) ENERVISTA MII PC VALUE RANGE STEP Phase IOC Setting 50P Function PHASE IOC 50P 50P Enabling Enable Enable 50P 50P Permission to Trip 50P Trip Permission Trip Enable 50P 50P Tap / Pickup 50P Pickup...
Page 173: Thermal Image Settings (49)
9 RELAY COMMISSIONING 9.23 USER SETTINGS 9.23.7 THERMAL IMAGE SETTINGS (49) ENERVISTA MII PC VALUE RANGE STEP Thermal Image (49) 49 Function THERMAL MODEL 49 F49 Enabling Enable 49 Enable Permission to Trip 49 Trip Permission Trip Enable49 49 Tap / Pickup (on FLA) 49 Pickup Pickup 49 0.1 - 2.4 FLA...
Page 174: Advanced Settings
9.24 ADVANCED SETTINGS 9 RELAY COMMISSIONING 9.24ADVANCED SETTINGS 9.24.1 GENERAL SETTINGS ENERVISTA MII PC VALUE RANGE STEP GENERAL GENERAL ADVANCED ADVANCED GENERAL ADVANCED SETTINGS SETTINGS Identification IDENTIFICATION Text Active Table ACTIVE TABLE Active Group Minimum tripping time MIN TRIP TIME Trip Min Time 50-300 ms 1 ms...
Page 175: Undercurrent Settings (37) (Table 2)
9 RELAY COMMISSIONING 9.24 ADVANCED SETTINGS 9.24.4 UNDERCURRENT SETTINGS (37) (TABLE 2) ENERVISTA MII PC VALUE RANGE STEP Undercurrent Setting Table 2 37 Element T2 UNDERCURRENT 37 37 Enabling Table 2 Enable 37 T2 Enable 37 37 Permission to Trip Table 2 37 Trip Permission T2 Trip Enable37 37 Tap / Pickup Table 2 37 Pickup T2...
Page 176: Maximum Number Of Starts (66) (Table 2) (Migii Q)
9.24 ADVANCED SETTINGS 9 RELAY COMMISSIONING 9.24.8 MAXIMUM NUMBER OF STARTS (66) (TABLE 2) (MIGII Q) ENERVISTA MII PC VALUE RANGE STEP Maximum number of starts NUMBER STARTS 66 Element T2 Table 2 66 Enabling Table 2 Enable 66 T2 Enable 66 66 Oper.
Page 177 9 RELAY COMMISSIONING 9.25 EVENT MASKS 9.25EVENT MASKS Event masks have two possible settings, YES or NO. If an action (e.g. the trip of a protection function) is set as YES, when the trip takes place an event will be generated. If it is set as NO, no event will be generated. ENERVISTA MII PC VALUE RANGE...
Page 178 9.25 EVENT MASKS 9 RELAY COMMISSIONING Close Breaker Close Breaker NA (2) ENERVISTA MII PC VALUE RANGE STEP Table 2 selection by digital input Active table change Event masks Event masks Oscillo trigger by digital input Oscillo trig by input Oscillo trigger by command Oscillo trig by com.
Page 179 10 INSTALLATION AND MAINTENANCE 10.1 INSTALLATION 10 INSTALLATION AND MAINTENANCE 10.1 INSTALLATION The relay should be installed in a clean, dry and dust-free place, with no vibrations. It should also be well lit to facilitate inspection and testing. Operational conditions as defined in section 3 must not be exceeded in any case. The relay should be mounted on a vertical surface.
Page 180 10.2 GROUND CONNECTION AND DISTURBANCES SUPPRESSION 10 INSTALLATION AND MAINTENANCE 10.2GROUND CONNECTION AND DISTURBANCES SUPPRESSION Threaded plug labelled as GND (refer to 1.3) should be correctly grounded, so that the disturbance suppression circuits in the system work correctly. This connection should be as short as possible (preferably 25 cm or less) to guarantee maximum protection.
Page 181 10 INSTALLATION AND MAINTENANCE 10.3 MAINTENANCE 10.3MAINTENANCE Given the important role that protection relays play in the operation of any installation, a periodic program of tests is highly recommended. The unit incorporates built-in diagnostic functions that permit immediate identification, with only the aid of keypad and display, of some of the most likely circuit failures.
Page 182 10.4 CLEANING INSTRUCTIONS 10 INSTALLATION AND MAINTENANCE 10.4CLEANING INSTRUCTIONS In case of detecting accumulated pollution, the unit can be cleaned with a clean cloth, either dry or slightly dampened with a cleaner containing alcohol. Abrasive cleaners must be avoided, as these can damage the metallic surface or the electrical connection elements. 10-4 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 183 Using the HMI it is possible to see an encrypted numerical value corresponding to the current HMI password. This value can be viewed in the MAIN SETTINGS – PRODUCT SETUP – HMI Password menu. Please contact GE Multilin Technical Support to decrypt this value and obtain the HMI password. How can I change the HMI Password? In the MAIN SETTINGS –...
Page 184 Anyway, it is recommended to check the converter’s documentation to confirm the manufacturer’s criterion. For the concrete case of GE PM’s F485 converter, connections are SDA with “-“ and SDB with “+”. After the previous steps, I cannot communicate through the rear RS485 port.
Page 185 ASCII, these files can be viewed in any application accepting ASCII format (Microsoft Excel“), as well as specific applications for viewing oscillography records, as GE Multilin’s GE OSC software. My MIGII unit has the display off but the Ready LED is ON; does that mean the relay needs to be repaired? No, it doesn’t.
Page 186 11.1 MIGII FAQ 11 MII FAMILY FAQ (FREQUENTLY ASKED QUESTIONS) 11-4 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 187 12 MIFII DO’S AND DON’TS 12.1 DO’S 12 MIFII DO’S AND DON’TS 12.1DO’S WARNING: When communicating with the RS232 front port of the relay, ensure that the relay is properly grounded (ground must be at the same level of the PC). Otherwise, use ungrounded PC. •...
Page 188 12.2 DON’TS 12 MIFII DO’S AND DON’TS 12.2DON’TS • Do not connect to the RS232 front port of the relay until being ensured that the relay ground is at the same level of PC ground. • Do not upgrade the relay firmware without first ensuring that relay Settings and Configuration have been downloaded and saved to a file.
Page 189 13 TROUBLESHOOTING GUIDE 13.1 MIGII TROUBLESHOOTING GUIDE 13 TROUBLESHOOTING GUIDE 13.1MIGII TROUBLESHOOTING GUIDE MIGII units have been designed and verified using the most advanced and reliable equipment. Mounting and testing automation ensure a high consistency of the final product. Before sending a unit back to the factory, we strongly recommend you follow the recommendations below.
Page 190 13.1 MIGII TROUBLESHOOTING GUIDE 13 TROUBLESHOOTING GUIDE 13-2 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 191 APPENDIX A A.1 INTRODUCTION APPENDIX A THERMAL IMAGE UNITA.1INTRODUCTION Protective relays are devices designed to detect and eliminate defects or faults in the Power System. The elimination of the fault is carried out by the opening of the circuit breaker or breakers that supply power to the fault. Faults in the Power System usually create very high current situations on lines, generators, transformers, etc.
Page 192 A.2 OPERATING PRINCIPLE APPENDIX A A.2OPERATING PRINCIPLE The thermal relays, based on the direct measure of the device/machine temperature present some difficulties when trying to measure the temperature of the sensitive elements of the device/machine to protect (i.e. windings in a transformer). The temperature is measured on the surrounding zones (i.e.
Page 193 APPENDIX A A.3 ALGORITHMS A.3ALGORITHMS Thermal Image algorithms are based on the heating/cooling process of a resistive element due to the current flowing through it. Let us assume a temperature reference (θ Being: Ohm Resistance (Ω) Current flowing through the element. (Amps) Mass of the element (kg) Specific Heat (Jul/kg/ºC) Element Temperature over ambient temperature (ºC)
Page 194 A.3 ALGORITHMS APPENDIX A Obviously, the derived equation describes the temperature evolution for both, a heating process and a cooling process. The final temperature value θ , for a permanent current I , will be (according to [2]): ∞ ∞ In equation [2], solving for time, you get: Introducing the following variable change: that implies to refer temperatures to the steady state value, equations [2] and [4] can be written as :...
Page 195 APPENDIX A A.4 DIGITAL TECHNOLOGY AND THERMAL IMAGE RELAYS A.4DIGITAL TECHNOLOGY AND THERMAL IMAGE RELAYS It is clear that digital technology characteristics fit the thermal image applications. The use of relatively simple algorithms, together with the ability to show relevant information (Thermal Image value, currents metering, fault information) and the integration of additional protection functions in the same relay (inverse or definite time overcurrent) co-ordinated with the thermal image function, allows to design high performance protective devices.
Page 196 A.5 THERMAL CURVE APPENDIX A A.5THERMAL CURVE The time needed for an element to rise its temperature (from an initial temperature θ ) the 63% of θ (θ is the temperature difference between the initial and the final temperature) is called “Time Constant”, and it is represented by the letter τ. Using an equation, it is the time it takes to reach an intermediate temperature θi where: If θ...
Page 197 APPENDIX A A.6 MIGII THERMAL CURVES A.6MIGII THERMAL CURVES The equation for the temperature given before was: MIGII uses an equation, in which the tripping time is a function of the current flowing through the protected element, thus τ in MIGII is designated as τ1. eliminating all references to the temperatures.
Page 198 A.6 MIGII THERMAL CURVES APPENDIX A Figure A–1: THERMAL CURVE FOR Τ1 = 3 MINUTES. MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 199 APPENDIX A A.6 MIGII THERMAL CURVES Figure A–2: THERMAL CURVES FOR Τ1 = 3 MIN. GEK-113188A MIGII Digital Protection for Electrical Machines...
Page 200 A.6 MIGII THERMAL CURVES APPENDIX A A-10 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 201 V<20.00 trip time will be: ≤ For V 20.00, trip time will be the same as for 20 times the setting: Where: Table B–1: GE IEC/BS142 INVERSE TIME CURVE CONSTANTS CURVE NAME Extremely inverse IEC Curve C Very inverse IEC Curve B 13.5...
Page 202 B.1 IEC/BS142 CURVES APPENDIX B Trip times for IEC/BS142 curves are as follows Table B–2: TRIP TIMES (IN SECONDS) FOR IEC/BS142 CURVES TIMES DIAL 0.05 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.20 1.40 1.60 1.80 2.00 INVERSE BS 142 1.05 7.17...
Page 203 APPENDIX B B.1 IEC/BS142 CURVES Figure B–1: IEC/BS142 INVERSE CURVES GEK-113188A MIGII Digital Protection for Electrical Machines...
Page 204 B.1 IEC/BS142 CURVES APPENDIX B Figure B–2: IEC/BS142 VERY INVERSE CURVES MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 205 APPENDIX B B.1 IEC/BS142 CURVES Figure B–3: IEC/BS142 EXTREMELY INVERSE CURVES GEK-113188A MIGII Digital Protection for Electrical Machines...
Page 206 For 1.05 V<20.00 trip time will be ≤ For V 20.00, trip time will be the same as for 20 times the setting Where: Table B–3: GE ANSI INVERSE TIME CURVE CONSTANTS CURVE NAME Extremely inverse 0.0399 0.2294 0.5000 3.0094 0.7222...
Page 207 APPENDIX B B.2 ANSI CURVES Table B–4: TRIP TIMES (IN SECONDS) FOR ANSI CURVES TIMES DIAL INVERSE ANSI 1.05 8.61 17.23 34.46 51.69 68.91 86.14 103.37 120.60 137.83 155.06 172.29 206.74 241.20 275.66 310.12 344.57 1.50 2.14 4.28 8.57 12.85 17.14 21.42 25.71...
Page 208 B.2 ANSI CURVES APPENDIX B Figure B–4: ANSI INVERSE MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 209 APPENDIX B B.2 ANSI CURVES Figure B–5: ANSI VERY INVERSE GEK-113188A MIGII Digital Protection for Electrical Machines...
Page 210 B.2 ANSI CURVES APPENDIX B Figure B–6: ANSI EXTREMELY INVERSE B-10 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 211 APPENDIX C C.1 MODBUS FORMAT APPENDIX C MODBUSC.1MODBUS FORMAT The ModBus Format (Intel/Motorola) setting, in General Settings, provides with different ways to access and/or modify the relay information Differences between selecting the Intel or Motorola setting are explained in the following table: INTEL MOTOROLA ModBus Map Addressing...
Page 212 C.2 READING VALUES APPENDIX C C.2READING VALUES ® The ModBus function used is number 3 (READ HOLDING REGISTERS). The message request command is generated as follows: Request: FIELD LENGTH Relay address 1 Byte Function 1 Byte (03h) Beginning address 1 word (High Byte – Low Byte) Number of registers 1 word (High Byte –...
Page 213 APPENDIX C C.3 COMMAND EXECUTION C.3COMMAND EXECUTION ® Commands with ModBus Intel format setting are executed in two steps: selection and confirmation. First, send the command or operation selection command. When the relay response arrives, send the confirmation. It is necessary to send the relay password.
Page 214 C.3 COMMAND EXECUTION APPENDIX C Example: We send the Group-related command. For instance, to activate Group 2, the selection command will be 15 (0F00H) Intel Request: ADDRESS FUNCTION BEGINNING #REGS #BYTES DATA0 0000H 0001H 0F00H A3A0H Intel Reply: ADDRESS FUNCTION BEGINNING #REGS 0000H...
Page 215 APPENDIX C C.3 COMMAND EXECUTION Motorola Reply: FIELD LENGTH Relay address 1 byte Function 1 byte (10H) Beginning address 1 word (0000H) (High byte – low byte) Number of registers 1 word (0001H) (High byte – low byte) 1 word Example: Request: To activate Group 2, the selection command will be 0FH;...
Page 216 C.4 SYNCHRONIZATION APPENDIX C C.4SYNCHRONIZATION To synchronize the date and time of a relay we use a command with the following characteristics The command is executed in broadcast mode (relay address = 00H) Date and time are included in the message. The date and time format length is 6 bytes No answer is expected from the relay FIELD LENGTH...
Page 217 APPENDIX C C.5 WRITING SETTINGS C.5WRITING SETTINGS There are three steps to write a setting: Execute a selection command using the corresponding code (See command execution) Change the setting Execute a confirmation command using the corresponding code (See command execution) For Motorola format, only the last two steps are necessary ‚...
Page 218 C.5 WRITING SETTINGS APPENDIX C C.5.1 FRAME STRUCTURE Request: FIELD LENGTH Relay address 1 byte Function 1 byte (10H) Beginning address 1 word (High Byte – low byte) Number of registers 1 word (High Byte – low byte) Number of bytes 1 byte Value of the registers Low byte- high byte...
Page 219 APPENDIX C C.5 WRITING SETTINGS Data0 => 5152H (PR) Data4 => 2020H Data1 => 5545H (UE) Data5 => 2020H Data2 => 4241H (BA) Data6 => 2020H Data3 => 2020H Data7 => 2020H Intel Reply: ADDRESS FUNCTION BEGINNING #REGS 0128H 0008H 403BH Motorola Request: ADDRESS...
Page 220 C.5 WRITING SETTINGS APPENDIX C SETTING CHANGE CONFIRMATION (LIKE IN A COMMAND) Intel Request: ADDRESS FUNCTION BEGINNING #REGS BYTES #DATA0 DATA1 DATA2 0000H 0003H 0200H 0100H 0000H E69EH Intel Reply: ADDRESS FUNCTION BEGINNING #REGS 0000H 0003H 8008H Motorola Request: ADDRESS FUNCTION BEGINNING #REGS...
Page 221 APPENDIX C C.6 ERRORS C.6ERRORS When any of the previous commands produce an error in the slave the following frame is received: ADDRESS FUNCTION + 80 H COD. ERROR 0DC2H We can receive the following values in the error code field: ILLEGAL FUNCTION ILLEGAL DATA ADDRESS ILLEGAL DATA VALUE...
Page 222 C.7 MODBUS MAP - SETTINGS APPENDIX C C.7MODBUS MAP - SETTINGS INTEL MOTOROLA BITS NAME DESCRIPTION # OF FORMAT ADDRESS ADDRESS BYTES 0128 0094 IDEN IDENTIFICATION BYTES ARRAY 0138 009C Trip Min Time Trip Min Time FLOAT32 013C 009E Settings Group Settings Group 013E 009F...
Page 223 APPENDIX C C.7 MODBUS MAP - SETTINGS INTEL MOTOROLA BITS NAME DESCRIPTION # OF FORMAT ADDRESS ADDRESS BYTES 019A 00CD Pickup 48 48 Pickup FLOAT32 019E 00CF Delay 48 48 Time delay FLOAT32 01A2 00D1 Block Delay 48 Block 48 from offline FLOAT32 01A6 00D3...
Page 224 C.7 MODBUS MAP - SETTINGS APPENDIX C INTEL MOTOROLA BITS NAME DESCRIPTION # OF FORMAT ADDRESS ADDRESS BYTES 010F Curve 46 46P Curve T2 ENUMERATION 0220 0110 TD Mult 46 46P K T2 FLOAT32 0224 0112 Delay 46 46P Time Delay T2 FLOAT32 0228 0114...
Page 225 APPENDIX C C.7 MODBUS MAP - SETTINGS INTEL MOTOROLA BITS NAME DESCRIPTION # OF FORMAT ADDRESS ADDRESS BYTES 028C 0146 A50G 50G Pickup 028C 0146 A 49 49 Alarm 028C 0146 A 48 48 Pickup 028C 0146 A51P 51P Pickup 028C 0146 A51G...
Page 226 C.8 MODBUS MAP- STATUS APPENDIX C C.8MODBUS MAP- STATUS INTEL MOTOROLA BITS NAME DESCRIPTION # OF FORMAT ADDRESS ADDRESS BYTES 0128 0094 IDEN IDENTIFICATION BYTES ARRAY 0138 009C Trip Min Time Trip Min Time FLOAT32 013C 009E Settings Group Settings Group 013E 009F Relay Operation...
Page 227 APPENDIX C C.8 MODBUS MAP- STATUS INTEL MOTOROLA BITS NAME DESCRIPTION # OF FORMAT ADDRESS ADDRESS BYTES 019A 00CD Pickup 48 48 Pickup FLOAT32 019E 00CF Delay 48 48 Time delay FLOAT32 01A2 00D1 Block Delay 48 Block 48 from offline FLOAT32 01A6 00D3...
Page 228 C.8 MODBUS MAP- STATUS APPENDIX C INTEL MOTOROLA BITS NAME DESCRIPTION # OF FORMAT ADDRESS ADDRESS BYTES 010F Curve 46 46P Curve T2 ENUMERATION 0220 0110 TD Mult 46 46P K T2 FLOAT32 0224 0112 Delay 46 46P Time Delay T2 FLOAT32 0228 0114...
Page 229 APPENDIX C C.8 MODBUS MAP- STATUS INTEL MOTOROLA BITS NAME DESCRIPTION # OF FORMAT ADDRESS ADDRESS BYTES 028C 0146 A50G 50G Pickup 028C 0146 A 49 49 Alarm 028C 0146 A 48 48 Pickup 028C 0146 A51P 51P Pickup 028C 0146 A51G 51G Pickup...
Page 230 C.8 MODBUS MAP- STATUS APPENDIX C C-20 MIGII Digital Protection for Electrical Machines GEK-113188A...
Page 231 APPENDIX D D.1 TRIP CIRCUIT SUPERVISION FOR MII-FAMILY RELAYS APPENDIX D APPLICATION NOTESD.1TRIP CIRCUIT SUPERVISION FOR MII-FAMILY RELAYS MII Family relays can be used to monitor Trip circuit integrity. The circuit is basically a Voltage Monitor connected to contact 52a. The circuit is continuously monitoring the voltage level. The circuit below is designed to monitor the complete trip circuit.
Page 232 D.1 TRIP CIRCUIT SUPERVISION FOR MII-FAMILY RELAYS APPENDIX D For monitoring the trip circuit while the breaker is open and when it is closed, a resistor must be added in parallel to the 52a contact, as shown below: +Vdc TRIP TRIP INP#1 INP#2...
Page 233 APPENDIX D D.1 TRIP CIRCUIT SUPERVISION FOR MII-FAMILY RELAYS D.1.1 SETTINGS AND CONFIGURATION Settings and configuration related to this function are described below: Under I/O CONFIGURATION, Input#1 must be configured as 'General Input'. It will be used to monitor the permanent presence of voltage.
Page 234 D.1 TRIP CIRCUIT SUPERVISION FOR MII-FAMILY RELAYS APPENDIX D Under I/O Configuration, configure LEDs and outputs as required. In this example, LED#1 and configurable output#1 are configured to operate when a Trip Circuit failure is detected. They are also configured to have memory, so they will remain active even if the Trip Circuit failure disappears.
Page 235 APPENDIX E APPENDIX E MODEM CONNECTION If we wish to connect the relay to a remote PC, it will be necessary to previously link two modems to the telephone line. The modem on the relay side will receive the call, and the modem on the PC side will make the call. This way, both modems will be configured in different ways: the modem on the PC side will receive the commands from the PC for starting or ending communication, and therefore it will make the call.
Page 236 E.1 HAYES MODEM APPENDIX E E.1HAYES MODEM In order to establish communication between two HAYES modems, both of them must accept HAYES commands. This is compulsory, as the PC will send specific commands for this type of modem. We must place the AT command before every command.
Page 237 APPENDIX E E.2 V.25BIS MODEM E.2V.25BIS MODEM ENERVISTA MII SETUP software allows the modem making the call to accept V.25bis commands. In this case, the modem on the relay side could be either HAYES or V.25bis, as it will not need to process any relay command. The configuration of this kind of modem is performed by means of microswitches that set its operation.
Page 238 E.3 SAMPLES OF SETTINGS FOR PARTICULAR MODEMS APPENDIX E E.3SAMPLES OF SETTINGS FOR PARTICULAR MODEMS In the following sections, we will detail some communications parameters, already tested for the following modems. E.3.1 SPORTSTER FLASH X2 MODEM (HAYES) Initiation commands for the modem on the PC side: We will add the following commands to the default configuration: &AnEnable/disable the ARQ result codes Disable the ARQ result codes...
Page 239 APPENDIX E E.3 SAMPLES OF SETTINGS FOR PARTICULAR MODEMS E.3.2 ZOOM PKT14.4 Initiation commands for the PC modem: Commands: B0 E0 L1 M1 N1 Q0 T V0 W0 X1 Y0 &C1&D2&G0&J0&K3&Q5&R1&S0&T5&X0&Y0 S Registers: S00:001 S01:000 S02:043 S03:013 S04:010 S05:008 S06:002 S07:050 S08:002 S09:006...
Page 240 E.3 SAMPLES OF SETTINGS FOR PARTICULAR MODEMS APPENDIX E E.3.3 MODEM SATELSA MGD-2400-DHE (V.25BIS) In this case, the modem initial configuration is set by changing the microswitches located in three sets on the bottom of the units. Location of modem microswitches on the PC side: Set 1 Nº...
Page 241 APPENDIX E E.3 SAMPLES OF SETTINGS FOR PARTICULAR MODEMS Set 3 DESCRIPTIONº VALUE 1&2 Transmission timer selection. ON-ON ON-ON114 OFF-ON113 ON-OFF114/5 OFF-OFF113 RTC Dialing system ON: Multi-frequency dialing. OFF: Loop opening pulse dialing Status of circuit 109, during protocol V.25bis in RTC, option 108.2. ON: Status of circuit 108 remains.
Page 242 E.3 SAMPLES OF SETTINGS FOR PARTICULAR MODEMS APPENDIX E Set 2 Nº DESCRIPTIÓN VALUE Synchronous format of protocol V25bis in option 108.2. ON: Character oriented format (BSC). OFF: Bit oriented format (HDLC). 2&3 Asynchronous character format for data transfer ON-OFF ON-ON8 OFF-ON9 ON-OFF10...

GE Multilin MIGII Instruction Manual

2 Product Description

3 Hardware

4 Communications

7 Logic Configuration

8 Keypad and Display

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