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GE 345 Quick Start Manual

GE 345 Quick Start Manual

Transformer protection system
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GE
Grid Solutions
345
Transformer Protection System
Transformer protection and control
Quick Start Guide
345 revision: 1.5x
Manual P/N: 1601-9100-A8
GE publication code: GEK-113569G
E83849
LISTED
*1601-9100-A8*
IND.CONT. EQ.
52TL

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  • Page 1 Grid Solutions Transformer Protection System Transformer protection and control Quick Start Guide 345 revision: 1.5x Manual P/N: 1601-9100-A8 GE publication code: GEK-113569G E83849 LISTED *1601-9100-A8* IND.CONT. EQ. 52TL...
  • Page 2 The contents of this manual are the property of GE Multilin Inc. This documentation is furnished on license and may not be reproduced in whole or in part without the permission of GE Multilin. The content of this manual is for informational use only and is subject to change without notice.
  • Page 3 GENERAL SAFETY PRECAUTIONS - 345 Note • Failure to observe and follow the instructions provided in the equipment manual(s) could cause irreversible damage to the equipment and could lead to property damage, personal injury and/or death. • Before attempting to use the equipment, it is important that all danger and caution indicators are reviewed.
  • Page 4 Indicates practices not related to personal injury. Note For further assistance For product support, contact the information and call center as follows: GE Grid Solutions 650 Markland Street Markham, Ontario Canada L6C 0M1 Worldwide telephone: +1 905 927 7070...

  • Page 5: Table Of Contents

    Table of Contents INTRODUCTION Overview ..........................1 Description of the 345 Transformer Protection System .........1 345 order codes .........................6 Specifications ........................7 Password security ........................7 Protection ............................ 7 Metering ............................9 Data capture ..........................9 Controls ............................10 Inputs/Outputs ......................... 10 Power supply ..........................
  • Page 6 Protection summary 66 QUICK SETUP - Quick Setup menu ......................71 FRONT CONTROL PANEL MAINTENANCE General maintenance ..................... 75 In-service maintenance ....................... 75 Out-of-service maintenance ..................... 75 Unscheduled maintenance (system interruption) ........... 76 toc-2 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 7: Introduction Overview

    Chapter 1: Introduction Introduction Overview The 345 is a microprocessor-based relay for primary and backup protection of small to medium size distribution transformers. The relay provides advanced algorithms for automatic magnitude and phase compensation for more than twenty types of two-...
  • Page 8 DESCRIPTION OF THE 345 TRANSFORMER PROTECTION SYSTEM CHAPTER 1: INTRODUCTION Description of the 345 Transformer Protection System Relay functions are controlled by two processors: a Freescale MPC5554 32-bit microprocessor measures all analog signals and digital inputs and controls all output relays;...
  • Page 9 CHAPTER 1: INTRODUCTION DESCRIPTION OF THE 345 TRANSFORMER PROTECTION SYSTEM Figure 1-1: Single line diagram Winding 2 Winding 1 50BF 50BF 51_2 51_2 Calculate Calculate Restraint Current Differential Currents 50/87 Calculate BLOCK Harmonics 2nd and 5th Metering 897743.CDR Table 1-1: Protection Elements...
  • Page 10 51_2 Negative Sequence Timed Overcurrent The 345 relay has two identical setpoint groups, with the same set of protection elements. By default setpoint group 1 will be active. Setpoint group 2 can be activated by programming the conditions under S4 Control/Change Setpoint Group menu.
  • Page 11 CHAPTER 1: INTRODUCTION DESCRIPTION OF THE 345 TRANSFORMER PROTECTION SYSTEM Figure 1-2: Main menu XFMR PERCENT DIFF ACTUAL VALUES ACTUAL VALUES PCNT DIFF FUNCTION QUICK SETUP A1 STATUS ▼ A2 METERING SETPOINTS MINIMUM PICKUP MAINTENANCE A3 RECORDS SLOPE 1 ▼...

  • Page 12: 345 Order Codes

    345 ORDER CODES CHAPTER 1: INTRODUCTION 345 order codes The information to specify a 345 relay is provided in the following Order Code figure. Figure 1-3: Order Codes Features related to each order number are subject to change without notice.

  • Page 13: Specifications

    Curve Multiplier:........... 0.05 to 20.0 in steps of 0.1 Reset Time: ............Instantaneous, Linear Curve Timing Accuracy:........±3% of expected inverse time or 1 cycle, whichever is greater, from pickup to operate Level Accuracy:............ per CT input 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 14 Slope Range: ............0 to 100% in steps of 1 Pickup Delay: ............0.00 to 600.0 s in steps of 0.01 Operate Time: ............< 30 ms @ 0 ms time delay Level Accuracy:............ per current inputs 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 15: Metering

    Data Storage:............RAM - battery backed up; retained for 3 days 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 16: Controls

    Debounce time: ........... 1 to 64 ms, selectable, in steps of 1 ms Maximum input voltage & continuous current draw:........... 300 VDC, 2 mA, connected to Class 2 source Type: ................. opto-isolated inputs External switch: ........... wet contact 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 17: Power Supply

    Voltage withstand: ..........2 × highest nominal voltage for 10 ms Power consumption: ......... 15 W nominal, 20 W maximum 20 VA nominal, 28 VA maximum Fuse rating: ............5A fuse; time lag, slow blow, 350V 4.5 O.D. X 14.5mm 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 18: Communications

    Power Frequency Immunity EN61000-4-7/IEC60255-22-7 Class A & B Voltage interruption and IEC60255-11 15% ripple , 200ms interupts Ripple DC Radiated & Conducted CISPR11 /CISPR22/ IEC60255-25 Class A Emissions Sinusoidal Vibration IEC60255-21-1 Class 1 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 19 Description Country of origin Spain or Canada; see label on the unit Date of manufacture See label on the side of the 345 unit Declaration of Conformity and/or Certificate of Available upon request Conformity 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 20: Physical Specifications

    -40C to 60C Humidity Operating up to 95% (non condensing) @ 55C (As per IEC60068-2-30 Variant 2, 6days) Altitude: 2000m (max) Pollution Degree: Overvoltage Category: Ingress protection: IP40 Front , IP10 back Noise: 0 dB 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 21: Installation Mechanical Installation

    This section describes the mechanical installation of the 345 system, including dimensions for mounting and information on module withdrawal and insertion. Dimensions The dimensions of the 345 are shown below. Additional dimensions for mounting and panel cutouts are shown in the following sections. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 22 MECHANICAL INSTALLATION CHAPTER 2: INSTALLATION Figure 2-1: 345 dimensions – Drawout 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 23: Product Identification

    Figure 2-2: 345 dimensions - Non-drawout unit Product identification The product identification label is located on the side panel of the 345 . This label indicates the product model, serial number, firmware revision, and date of manufacture. Figure 2-3: 345 label Mounting 345 TRANSFORMER PROTECTION SYSTEM –...

  • Page 24: Standard Panel Mount

    To avoid the potential for personal injury due to fire hazards, ensure the unit is CAUTION: mounted in a safe location and/or within an appropriate enclosure. Figure 2-4: Standard panel mounting - Drawout 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 25 If added security is required, bend the retaining "V"tabs outward, to about 90°. These tabs are located on the sides of the case and appear as shown above. The relay can now be inserted and can be panel wired. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 26 (104.1 mm 0.25 mm) ± Φ 0.200” (5.1 mm) 6.900” 0.010” ± (175.3 mm 0.25 mm) ± 6.000” 0.010” ± (152.4 mm 0.25 mm) ± 4.000” 0.010” ± (101.6 mm 0.25 mm) ± 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 27: Drawout Unit Withdrawal And Insertion

    NOTE: IT IS THE RESPONSIBILITY OF THE USER TO ENSURE THAT THE EQUIPMENT IS INSTALLED, OPERATED, AND USED FOR ITS INTENDED FUNCTION, IN THE MANNER SPECIFIED BY THE MANUFACTURER. IF THIS IS NOT THE CASE, THEN THE SAFETY PROTECTION PROVIDED BY THE EQUIPMENT MAY BE IMPAIRED. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 28: Ip20 Cover (Optional)

    IP20 Cover (optional) The IP20 cover minimizes potential dangers to users by preventing finger contact with electrical connections at the back of the 345 drawout units. The IP20 cover is used only with the 345 drawout units. NOTE: Attaching the cover...

  • Page 29: Electrical Installation

    TYPE B 5 AUXILIARY 4 WIRE USB Rear Panel COMMUNICATIONS 6 AUXILIARY ETHERNET RJ45 mTRJ RS485 IRIG-B 10/100 BASE-T100 BASE-FX 7 CRITICAL 4 WIRE ETHERNET FAILURE OPTIONAL F5 F4 F3 RELAY GROUND 897744.CDR 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 30 TYPE B 5 AUXILIARY 4 WIRE USB Rear Panel COMMUNICATIONS 6 AUXILIARY ETHERNET RJ45 mTRJ IRIG-B RS485 10/100 BASE-T100 BASE-FX 7 CRITICAL 4 WIRE ETHERNET FAILURE OPTIONAL C5 C4 C3 RELAY GROUND 897745.CDR 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 31: Terminal Identification

    This is to ensure the adjacent lower terminal block does not interfere with the lug body. Figure 2-12: Orient the lugs correctly... SCREW WASHER LOWER TERMINAL TERMINAL BLOCK DIVIDER Figure 2-13: CORRECT INSTALLATION METHOD 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 32 ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION Figure 2-14: INCORRECT INSTALLATION METHOD (lower lug reversed) 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 33 W2 PHASE B CT AUX 6 N/O ■ W2 PHASE C CT INPUT COM CRIT FAIL N/C W2 PHASE C CT CRIT FAIL COM ■ W2 GND CT CHASSIS GND CRIT FAIL N/O W2 GND CT 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 34: Wire Range

    ABC or ACB rotation. Current inputs The 345 relay has eight (8) channels for AC current inputs, each with an isolating transformer. There are no internal ground connections on the current inputs. Current transformers with 1 to 6000 A primaries may be used.

  • Page 35: Ground And Sensitive Ground Ct Inputs

    WITH ZERO SEQUENCE CT WITH ZERO SEQUENCE CT WITH RESIDUAL CONNECTION WITH RESIDUAL CONNECTION 897730.CDR For Winding 2 ground CT, use relay terminals D12-E12 in the same wiring configuration as shown above for Winding 1. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 36: Zero Sequence Ct Installation

    96 strands of number 34 AWG should be used. Belden catalog number 8660 is suitable. Isolate power prior to servicing. CAUTION: An external switch, circuit breaker, or other protective device must be connected near to NOTE: the equipment. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 37: Trip1 And Trip2 Output Relays

    898735.CDR Trip1 and Trip2 output relays The 345 relay is equipped with seven electromechanical relays: two special relays designed for Winding 1 Breaker trip and Winding 2 Breaker trip, four general purpose relays (Auxiliary Relays 3 to 6), and a Critical Failure relay. The special purpose relays have fixed operating characteristics and the general purpose relays can be configured by the user.
  • Page 38 DC + DC + Output Relay 1 (TRIP) Output Relay 2 (TRIP) contact contact Trip Trip Coil Coil 897785.cdr DC - DC - All AUX contacts are shown when the breaker is open. NOTE: 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 39: Contact Inputs

    Terminal C11. The maximum external source voltage for this arrangement is 300 V DC. Figure 2-22: Wet contact connections Wet Contact Connection 345 RELAY Contact Input 1 V DC Power Supply Contact Input Common C11 LOGICIN.CDR 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 40: Serial Communications

    CAUTION: that the common terminals of each RS485 port are tied together and grounded only once, at the master or at the 345 . Failure to do so may result in intermittent or failed communications. The source computer/PLC/SCADA system should have similar transient protection devices installed, either internally or externally.

  • Page 41: Irig-B

    DC level shift or amplitude modulated (AM) form. The type of form is auto-detected by the 345 relay. Third party equipment is available for generating the IRIG-B signal; this equipment may use a GPS satellite system to obtain the time reference so that devices at different geographic locations can also be synchronized.
  • Page 42 ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 43 • Interfacing via the EnerVista SR3 Setup software. This section provides an overview of the interfacing methods available with the 345 using the relay control panels and EnerVista SR3 Setup software. For additional details on interface parameters (for example, settings, actual values, etc.), refer to the individual chapters.

  • Page 44: Interfaces Front Control Panel Interface

    W1 BREAKER OPEN TROUBLE ALARM W1 BREAKER CLOSED SETPOINT PICKUP W2 BREAKER OPEN GROUP 1 SETPOINT MAINTENANCE W2 BREAKER CLOSED GROUP 2 △ ▲ MENU ◁ ▷ ENTER ▼ ESCAPE ▽ RESET 897351A1.cdr 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 45: Description

    Any trip, alarm, or pickup is displayed immediately, automatically overriding the default message. Working with the The 345 display messages are organized into a Main Menu, pages, and sub-pages. There Keypad are four main menus labeled Actual Values, Quick Setup, Setpoints, and Maintenance.
  • Page 46 Trip LEDs, breaker operation failure, and trip / close coil failures. The Autoreclose Scheme is also reset with the shot counter being returned to zero and the lockout condition being cleared. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 47: Led Status Indicators

    NOTE: contacts. The 345 provides also detecting the breaker status by using only one contact: either 52a or 52b. However, one should be aware that in such cases, it would be impossible to distinguish between a breaker open state and breaker racked out state, unless another contact from the breaker is wired to the relay.

  • Page 48: Relay Messages

    State: Operate This line from the display shows the state of the element: Pickup, Operated, Alarm. Phase: A The last line from the display shows the phase that picked up or operated. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 49: Self-Test Errors

    MAINTENANCE Communication Detected Check Ethernet cable and ALERT: error between Instantaneously Ethernet connection. Ethernet Link 345 and Network. Check health of the Fail network. Check status of external routers and switches. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 50: Flash Messages

    This flash message is displayed in response to executing a command: ON, OFF, YES, NO, etc. INVALID PASSWORD This flash message appears upon an attempt to enter an incorrect password, as part of password security. Software setup 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 51: Quick Setup - Software Interface

    Although settings can be entered manually using the control panel keys, a PC can be used to download setpoints through the communications port. The EnerVista SR3 Setup software is available from GE Multilin to make this as convenient as possible. With EnerVista SR3 Setup running, it is possible to: •...

  • Page 52: Hardware And Software Requirements

    The EnerVista SR3 Setup software can run without a 345 connected to the computer. In this case, settings may be saved to a file for future use. If a 345 is connected to a PC and communications are enabled, the 345 can be programmed from the setting screens. In addition, measured values, status and trip messages can be displayed with the actual value screens.
  • Page 53 EnerVista SR3 Setup software to the Windows start menu. The 345 device will be added to the list of installed IEDs in the EnerVista Launchpad window, as shown below. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 54 If you are going to communicate from your computer to the 345 Relay using the USB port: 10. Plug the USB cable into the USB port on the 345 Relay then into the USB port on your computer. 11. Launch EnerVista SR3 Setup from LaunchPad.

  • Page 55: Upgrading The Software

    Enter the desired name in the "Device Name" field and a description (optional) of the device. Select “Serial” from the Interface drop-down list. Click the Read Order Code button to connect to the 345 device and upload the order code. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 56: Using The Quick Connect Feature

    As indicated by the window, the "Quick Connect" feature can quickly connect the EnerVista SR3 Setup software to a 345 front port if the USB is selected in the interface drop-down list. Select "345 Relay" and press the Connect button. Ethernet can also be used as the interface for Quick Connect as shown above.

  • Page 57: Configuring Ethernet Communications

    CHAPTER 3: INTERFACES SOFTWARE SETUP The 345 Site Device has now been configured via the Quick Connect feature for either USB or Ethernet communications. Proceed to Connecting to the Relay below, to begin communications. Configuring Ethernet Before starting, verify that the Ethernet cable is properly connected to the RJ-45 Ethernet communications port.

  • Page 58: Connecting To The Relay

    Enter the IP address, slave address, and Modbus port values assigned to the 345 relay (from the S1 RELAY SETUP > COMMUNICATIONS > ETHERNET menu). Click the Read Order Code button to connect to the 345 and upload the order code. If a communications error occurs, ensure that the Ethernet communication values correspond to the relay setting values.

  • Page 59: Working With Setpoints And Setpoint Files

    Select the Setpoint > System Setup > Transformer menu item. Select the Transformer Rating setpoint by clicking anywhere in the parameter box. This will display three arrows: two to increment/decrement the value, and another to launch the numerical keypad. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 60: File Support

    In the Setpoint > System Setup > Transformer dialog box, click on Save to save the values into the 345 . Click YES to accept any changes and exit the window. Click Restore to retain previous values. Click Default to restore Default values.

  • Page 61: Downloading And Saving Setpoint Files

    The EnerVista SR3 Setup displays relay setpoints with the same hierarchy as the front panel display. Downloading and Back up a copy of the in-service settings for each commissioned 345 unit, so as to revert saving setpoint files to the commissioned settings after inadvertent, unauthorized, or temporary setting changes are made, after the settings default due to firmware upgrade, or when the unit has to be replaced.

  • Page 62: Creating A New Setpoint File

    The EnerVista SR3 Setup software allows the user to create new setpoint files independent setpoint file of a connected device. These can be uploaded to a relay at a later date. The following procedure illustrates how to create new setpoint files. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 63: Upgrading Setpoint Files To A New Revision

    Select the file name and path to store the file, or select any displayed file name to replace an existing file. All 345 setpoint files should have the extension ‘SR3’ (for example, ‘transformer1.SR3’). Click OK to complete the process. Once this step is completed, the new file, with a complete path, will be added to the EnerVista SR3 Setup software environment.

  • Page 64: Printing Setpoints And Actual Values

    Use the following procedure to print a list of setpoints: actual values Select a previously saved setpoints file in the File pane or establish communications with a 345 device. From the main window, select the Offline > Export Settings File menu item. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 65: Printing Actual Values From A Connected Device

    Establish communications with the desired 345 device. From the main window, select the Online > Print Device Information menu item The Print/Export Options dialog box will appear. Select Actual Values in the upper section and select either Include All Features (for a complete list) or Include Only Enabled Features (for a list of only those features which are currently used) in the filtering section and click OK.

  • Page 66: Loading Setpoints From A File

    The unit can be decommissioned by turning off the power to the unit and disconnecting clearing data the wires to it. Files can be cleared after uninstalling the EnerVista software or 345 device, for example to comply with data security regulations. On the computer, settings files can be identified by the .sr3 extension.

  • Page 67: Loading New Relay Firmware

    Message,” indicating that it is in upload mode. While the file is being loaded into the 345 , a status box appears showing how much of the new firmware file has been transferred and the upgrade status. The entire transfer process takes approximately 10 minutes.

  • Page 68: Advanced Enervista Sr3 Setup Features

    SOFTWARE SETUP CHAPTER 3: INTERFACES After successfully updating the 345 firmware, the relay will not be in service and will require setpoint programming. To communicate with the relay, the communication settings may have to be manually reprogrammed. When communications is established, the saved setpoints must be reloaded back into the relay.

  • Page 69: Transient Recorder (Waveform Capture)

    • Click on Trigger Waveform to trigger a waveform capture. Waveform file numbering starts with the number zero in the 345 , so that the maximum trigger number will always be one less than the total number of triggers available.
  • Page 70 The event record will provide additional information on the cause and system conditions at the time of the event. • From the window main menu bar, press the Preference button to open the COMTRADE Setup page, in order to change the graph attributes. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 71 The Waveform Capture window will reappear based on the selected graph attributes. To view a vector graph of the quantities contained in the waveform capture, press the Vector Display button to display the following window: 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 72: Protection Summary

    • view the enable/disable status of Control Elements • navigate to the respected Protection Element screen on a button click. The Protection Summary screen is as follows: 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 73 CHAPTER 3: INTERFACES SOFTWARE SETUP 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 74 SOFTWARE SETUP CHAPTER 3: INTERFACES 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 75 Quick setup - Front control panel The “Quick Setup” utility is part of the 345 relay main menu, and can be used for quick and easy programming. Power transformer parameters, and settings for the commonly used transformer elements can be easily set. Use the “Quick Setup” utility to program the following: •...
  • Page 76 PH CT INPUT PH IOC1 PICKUP RLY1 TRIP W1 BKR RLY2 TRIP W2 BKR GROUND IOC1 GND IOC1 FUNCTION ▼ GND CT INPUT GND IOC1 PICKUP 897759A2.cdr RLY1 TRIP W1 BKR RLY2 TRIP W2 BKR 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 77: Quick Setup Menu

    Range: 0.01 to 250.00 kV in steps of 0.01 kV Default: 4.16 kV W2 GROUNDING Range: Not Within Zone, Within Zone Default: Not Within Zone XFMR PERCENT DIFF Range: Disabled, Trip, Latched Alarm, Alarm Default: Disabled ↘ 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 78 Range: Do Not Operate, Operate Default: Do not operate RLY2 TRIP W2 BKR Range: Do Not Operate, Operate Default: Do not operate GND TOC1 FUNCTION Range: Disabled, Trip, Latched Alarm, Alarm Default: Disabled ↘ 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 79 Range: Disabled, Trip, Latched Alarm, Alarm Default: Disabled ↘ GND CT INPUT Range: CT(W1), CT(W2) Default: CT(W1) GND IOC1 PICKUP Range: 0.05 to 20.00 x CT in steps of 0.01 x CT Default: 1.00 x CT 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...
  • Page 80 The settings changed using the Quick Setup menu, are available for review and NOTE: modification by navigating through S2 SYSTEM SETUP and S3 PROTECTION > SETPOINT in the SETPOINTS main menu. GROUP 1 menu are available for rew 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

  • Page 81: General Maintenance

    General maintenance The 345 requires minimal maintenance. As a microprocessor-based relay, its characteristics do not change over time. The expected service life of a 345 is 20 years when the environment and electrical conditions are within stated specifications. While the 345 performs continual self-tests, it is recommended that maintenance be scheduled with other system maintenance.

  • Page 82: Unscheduled Maintenance (System Interruption)

    To avoid deterioration of electrolytic capacitors, power up units that are stored in a de- FASTPATH: energized state once per year, for one hour continuously. Unscheduled maintenance (system interruption) • View the event recorder and oscillography for correct operation of inputs, outputs, and elements. 345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE...

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