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Omicron CP TD1 User Manual

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Summary of Contents for Omicron CP TD1

  • Page 1 CP TD1 User Manual...
  • Page 2 The user is responsible for every application that makes use of an OMICRON product. OMICRON translates this manual from the source language English into a number of other languages. Any translation of this manual is done for local requirements, and in the event of a dispute between the English and a non-English version, the English version of this manual shall govern.

  • Page 3: Table Of Contents

    CP TD1 grounding terminal and Booster input ....... . 23...
  • Page 4 Hot collar test ..............61 Technical data Technical data of the CP TD1 in combination with the Control Device ..... 64 7.1.1 High-voltage output .

  • Page 5: About This Manual

    The CP TD1 User Manual always has to be available on the site where the CP TD1 is used. The users of the CP TD1 must read this manual before operating the CP TD1 and observe the safety, installation, and operation instructions therein.

  • Page 6: Related Documents

    CP TD1 User Manual Related documents The following documents complete the information covered in the CP TD1 User Manual: Title Description CPC 100 User Manual Contains information on how to use the CPC 100 test system and relevant safety instructions.

  • Page 7: Safety Instructions

    Before operating the CP TD1 and its accessories, read the safety instructions in this User Manual carefully. Do not turn on the CP TD1 and do not operate the CP TD1 without understanding the safety information in this manual. If you do not understand some safety instructions, contact OMICRON before proceeding.

  • Page 8: Safety Accessories

    The CP TD1 works as an add-on device to the CPC 100, CPC 80 or TESTRANO 600 which controls the measurement. In this manual, those devices are collectively named Control Device if no specific device is referred to. Do not connect the CP TD1 to any other device than the CPC 100, CPC 80 or the TESTRANO 600.

  • Page 9: Handling Cables

    ► Do not use an extension cable on a cable reel to prevent an overheating of the cord; run out the extension cord. ► If the CP TD1 does not seem to function properly, do not use it anymore. Please call the OMICRON technical support.

  • Page 10: Orderly Measures

    The CP TD1 User Manual or alternatively the e-book in PDF format has always to be available on site where the CP TD1 is being used. It must be read and observed by all users of the CP TD1. The CP TD1 may be used only as described in this User Manual. Any other use is not in accordance with the regulations.

  • Page 11: Compliance Statement

    OMICRON test sets are subject to the EU Waste Electrical and Electronic Equipment Directive 2012/19/EU (WEEE directive). As part of our legal obligations under this legislation, OMICRON offers to take back the test set and ensure that it is disposed of by authorized recycling agents.

  • Page 12: Introduction

    The CP TD1 works as an add-on device to the CPC 100, CPC 80 or TESTRANO 600 which controls the measurement. In this manual, those devices are collectively named Control Device if no specific device is referred to. Do not connect the CP TD1 to any other Control Device than the CPC 100, CPC 80 or the TESTRANO 600.

  • Page 13: Cpc 100 And Cp Td1 Equipment Trolley

    Introduction CPC 100 and CP TD1 equipment trolley Equipment trolley Cable drum with double-shielded output cable to feed CPC 100 the high voltage to the test object. ⇔ Booster cable CPC 100 CP TD1 (short type). Via this cable CPC 100 controls the CP TD1 output voltage.

  • Page 14: Functional Components Of The Cpc 100

    CP TD1 User Manual Functional components of the CPC 100 2.4.1 CPC 100 Front panel I / 0 AC OUTPUT Fuse-protected 6A or 130V output Warning lights that indicate either a safe operation, that is, no voltage at the CPC 100 outputs (green light "0"...

  • Page 15: Cpc 100 High-Voltage And High-Current Outputs

    Setup, the green warning light (0) is on, the outputs are turned off or the Emergency Stop button is pressed. ► Do not use any other booster cables than the ones supplied by OMICRON. ► Do not use booster cables that are frayed or damaged in any way ►...

  • Page 16: Cpc 100 Epc Interfaces

    CP TD1 User Manual 2.4.3 CPC 100 ePC interfaces The ePC interfaces are located on the right-hand side of the CPC 100 housing. The PC and network interfaces differ depending on the CPC 100 version as described below. USB connector for connecting...

  • Page 17: Functional Components Of The Cpc 80

    Built-in ePC Built-in ePC with front-panel control We recommend not to use 50 test results in one test procedure Safety (see Note below). key lock Emergency Soft-touch Navigation Test stop button keyboard elements Start/Stop Figure 2-4: CPC 80 front view OMICRON...

  • Page 18: Cpc 80 Mains Power Supply And Booster Output

    CP TD1 User Manual 2.5.2 CPC 80 mains power supply and Booster output Grounding terminal Ext. Booster for example, to power the CP TD1 Mains power supply Automatic circuit Mains power switch breaker Figure 2-5: Mains power supply, booster output and grounding terminal...

  • Page 19: Cpc 80 Epc Interfaces

    Red LED Serial interface connector for Connector for external safety connecting the CP TD1 functions (see below) Figure 2-6: ePC interfaces of the CPC 80 The CPC 80 supports the USB interface 1.1 and 2.0 for connecting the USB memory stick shipped with the CPC 80.

  • Page 20: Testrano 600 And Cp Td1 Equipment Trolley

    CP TD1 (short type). Via this data cable, the TESTRANO 600 software controls the CP TD1. CP TD1’s measuring inputs IN A and IN B, connected to the cable drum for the measuring cables. Swiveling mounting brackets for TESTRANO 600 (top) and CP TD1 (bottom).

  • Page 21: Functional Components Of Testrano 600

    Emergency Stop button Port for USB stick* Red warning light Green light Safe operation Indicates possibly hazardous voltage and/or current levels on the CP TD1 Start/stop measurement outputs *Display version only Figure 2-7: TESTRANO 600 front panel with display OMICRON...

  • Page 22: Testrano 600 Side Panel

    CP TD1 User Manual TESTRANO 600 side panel TAP CHANGER Connection to tap changer EXTERNAL BOOSTER for example, to power the CP TD1 Equipotential ground terminal Warning light 2 (steady-on orange): voltage > 42 V Warning light 1 (flashing red): current >...

  • Page 23: Functional Components Of The Cp Td1

    2.9.1 CP TD1 grounding terminal and Booster input Grounding terminal Booster input Figure 2-9: Grounding terminal and booster input of the CP TD1 (left side of the device) 2.9.2 CP TD1 serial interface connector and measuring inputs Serial interface connector...

  • Page 24: Cleaning

    CP TD1 User Manual 2.10 Cleaning WARNING Death or severe injury caused by high voltage or current possible ► Prior to cleaning disconnect the device. To clean one of the devices described in this document, use a cloth dampened with isopropanol alcohol or water.

  • Page 25: Application

    ► If there is a longer distance between the location of the CP TD1 and the area of danger (that is, the test object), a second person with an additional "Emergency Stop" button is required.

  • Page 26: Connecting The Cp Td1 To The Control Device

    Death or severe injury caused by high voltage or current ► Never use the CP TD1 without a solid connection to ground with at least 6 mm². ► Use a ground point as close as possible to the test object.
  • Page 27 5. Connect the CP TD1’s "SERIAL" to the Control Device’s "SERIAL" with the data cable. This cable also provides the power supply for the CP TD1. 6. Pull out the measuring cables from the cable drum and connect the test object to the CP TD1’s measuring inputs IN A and IN B.
  • Page 28 CP TD1 User Manual DANGER Death or severe injury caused by high voltage or current The high-voltage cable is double-shielded and therefore safe. However, the last 50 cm (20 inch) of this cable have no shield. ► During a test, consider this cable a life wire and, due to the high-voltage, life- hazardous.

  • Page 29: Measurement

    Measurement The CP TD1 can be either controlled via one of the Control Devices directly or via Primary Test Manager (PTM) in combination with a Control Device. For a detailed description of the user interface of the respective Control Device or Primary Test Manager...
  • Page 30 4. Earth-connect and shorten out the test object’s terminals using a grounding set. 5. Plug off the high-voltage cable from the high-voltage output of the CP TD1. 6. Disconnect the cables from the CP TD1.

  • Page 31: Introduction To Capacitance And Dissipation Factor Measurement

    (see Figure 4-1). Losses can also be represented by serial equivalent circuit diagram with C and R . The definition of the dissipation factor and the vector diagram are shown in Figure 4-2 on the following page. Figure 4-1: Simplified circuit diagram of a capacitor OMICRON...
  • Page 32 CP TD1 User Manual δ ----------------- - ω C δ δ Figure 4-2: Definition of dissipation factor (tan ) and the vector diagram ϕ The correlation between the Dissipation Factor and Power Factor (PF = cos ) and the vector diagram are shown in Figure 4-3.
  • Page 33 Considerations. IEEE Electrical Insulation Magazine, Vol. 19, No. 5, 2003, pp. 5-19 2. Jonscher, A.K.: Dielectric Relaxation in Solids. Chelsea Dielectric Presss, 1983, ISBN: 0950871109 3. Kao, K.-C.: Dielectric Phenomena in Solids. Academic Press; 1st edition, 2004, ISBN 0123965616 OMICRON...
  • Page 34 CP TD1 User Manual Influence of different parameters as water content, temperature and aging on DF Figure 4-5 shows the breakdown voltage and the DF in oil, dependent on the water content . With low water content, the breakdown voltage is very sensitive; with higher water content, the DF is a good indicator.
  • Page 35 The dissipation factor is dependent on the frequency. With modern test devices like the CPC 100 + CP TD1, it is possible to cover a wide frequency range for capacitance and DF measurements. Conventional fingerprint measurements for comparison are normally available only at line frequency.
  • Page 36 CP TD1 User Manual 0.67 % 0.66 % 0.65 % 0.64 % 0.63 % 0.62 % 0.61 % 0.60 % Figure 4-9: Frequency dependent dissipation factor of two OIP bushings (phase A and phase B If the dissipation factor is also dependent on the voltage, this is an indication for partial discharges or contact problems.

  • Page 37: Measurement Of Capacitance And Dissipation Factor / Power Factor

    Figure 4-11: CP TD1 measuring principle The CP TD1 test system utilizes a method similar to that of the Schering bridge. The main difference is that the CP TD1 measuring principle does not require tuning for measuring C and DF. C is a low loss reference capacitor.

  • Page 38: Ust" And "Gst" Measurements Using The Guard Technology

    "UST" and "GST" Measurements Using the Guard Technology The CP TD1 has three external measuring inputs, IN A, IN B and ground. Those three inputs can be individually switched to guard or to the measuring unit. If an input is switched to the measuring path, the connected capacitance is part of the measurement.

  • Page 39: Power Transformers

    (tank). • If the transformer has a tap changer then it should be set to the neutral position (0 or middle tap). • Connect the Control Device + CP TD1 ground terminal to the transformer's (substation) ground. OMICRON...

  • Page 40: Dissipation Factor Measurement

    CP TD1 User Manual • Short-circuit all bushing CTs. • Do not perform high-voltage tests on transformers under vacuum. • The test voltage should be chosen with respect to the rated voltage of the winding. • All tests should be made with oil temperatures near 20 °C. Temperature corrections can be calculated by using correction curves, but they depend a great deal on the insulation material, the water content and many other parameters.

  • Page 41: Two-Winding Transformer

    Insulation C , insulating the low-voltage windings from the core, also consists of oil and paper but there usually is much less paper present than in the C insulation. OMICRON...
  • Page 42 LV side (see Figure 5-3 on page 42). To prevent induced currents, all bushings of the HV side are shortened, the same applies to the LV side. The ground of the transformer and the ground of the CP TD1 are connected.
  • Page 43 CP TD 1 IN B IN A Figure 5-4: CP TD1 connected to a two-winding transformer for the measurement of and C With this setup 3 configurations are available as well (see Table 5-2 below). As C has been measured before, usually only C is measured in this second measurement.

  • Page 44: Measurements On Two-Winding Transformers

    CP TD1 User Manual Measurements on two-winding transformers Figure 5-5 shows the measurements necessary for a two-winding transformer, according to IEEE 62 1995 High Figure 5-5: Two-winding transformer test according to IEEE 62-1995 Table 5-3: The necessary measurements Test mode...

  • Page 45: Measurements On A Two-Winding Transformer With The Cpc 100 And Cpc 80

    Figure 5-7: 10 kV results for a two-winding transformer (50 Hz) 5.4.2 Measurements on a two-winding transformer with TESTRANO 600 For a detailed description of the Tan Delta measurement with TESTRANO 600 refer to the TESTRANO 600 User Manual under section "TouchControl tests" and its sub-section "Tan Delta". OMICRON...

  • Page 46: Three-Winding Transformer

    CP TD1 User Manual Three-winding transformer In a three-winding transformer there are two parts of insulation which are formed by barriers and spacers, C and C between the low- and tertiary-voltage windings (see Figure 5-8 below). Both insulation parts are similar in construction to C in a two-winding transformer.
  • Page 47 Power transformers When the CP TD1’s HV output is connected to the LV winding and IN A and IN B to HV and tertiary, the capacitances C and C can be measured without reconnection (see Figure 5-9 and Tables 5-4 and 5-5 below).
  • Page 48 IN B IN A Figure 5-10: CP TD1 connected to a three-winding transformer for the measurement of C With this setup the following 3 configurations are available: Table 5-6: Modes available with a measurement setup as seen in Figure 5-10...
  • Page 49 IN B IN A Figure 5-11: CP TD1 connected to a three-winding transformer for the measurement of C With this setup the following 3 configurations are available: Table 5-7: Modes available with a measurement setup as seen in Figure 5-11...

  • Page 50: Measurements On Three-Winding Transformers

    CP TD1 User Manual Measurements on three-winding transformers In IEEE Std. 62-1995 the test procedure is described for transformers with two and three windings. Figure 5-12 shows the six measurements necessary for a three-winding transformer. Tertiary High Figure 5-12: Three-winding transformer test according to IEEE 62-1995...

  • Page 51: Measurements On A Three-Winding Transformer With The Cpc 100 And Cpc 80

    This example shows the preparation of a three-winding transformer measurement with the CPC Editor. Due to the high amount of measuring data, the test is split into three single test files. The first file contains the tests with the high-voltage winding connected to the high-voltage output of the CP TD1. First file...
  • Page 52 CP TD1 User Manual Figure 5-15: Measurement of C and C in GST g-B mode Figure 5-16: Voltage-scan of high-voltage windings to tank and core (GST gA+B) OMICRON...
  • Page 53 A second test file contains the tests with the low-voltage winding connected to the high-voltage output of the CP TD1. Figure 5-18 shows the first screen with the connection instructions. Figure 5-18: Connection instructions for the tests with energized low-voltage winding...
  • Page 54 A third test file is used for the tests with the tertiary winding connected to the high-voltage output of the CP TD1. Figure 5-19 shows the connection instructions for the tests with energized tertiary winding. Figure 5-19: Connection instructions for the tests with energized tertiary winding The prepared tests are to be uploaded to the CPC 100 as xml files without results.
  • Page 55 "fingerprint" for future measurements. For all the described measurements only three different connections of the test leads are necessary. Preparing the test in the office by utilizing the CPC Editor, the testing time on-site can be reduced to a minimum. Figure 5-21: Voltage-scan for H-L (V) (50 Hz) OMICRON...

  • Page 56: Measurements On A Three-Winding Transformer With Testrano 600

    CP TD1 User Manual Figure 5-22: Frequency scan for H-L (f) (5 kV) 5.6.2 Measurements on a three-winding transformer with TESTRANO 600 For a detailed description of the Tan Delta measurement with TESTRANO 600 refer to the TESTRANO 600 User Manual under section "TouchControl tests" and its sub-section "Tan Delta".

  • Page 57: High-Voltage Bushings

    • The tap electrode is normally grounded in service except for certain designs and bushings used with potential device. Tap electrode grounded layer/flange Grounded layer/flange Figure 6-1: Condenser bushing design OMICRON...

  • Page 58: Composite

    CP TD1 User Manual Tap insulation Main insulation Grounded Center layer/flange conductor Tap electrode (normally grounded) Line-to-ground system voltage Note: For bushings with potential taps, the C capacitance is much greater than C . For bushings with power-factor tap, C capacitances may be same order of magnitude.

  • Page 59: Oil-Impregnated Paper-Insulated

    In the case of bushings equipped with capacitance taps, a supplementary test should always be made on the insulation between the tap and the flange. OMICRON...
  • Page 60 CP TD1 User Manual Most manufacturers list the UST dissipation factor and capacitance values on the bushing nameplate. IN A IN B Equalizers Layer Voltage tap Mounting flange layer (always grounded to flange) Paper insulation Main conductor Figure 6-3: UST-A bushing test (C...

  • Page 61: Grounded Specimen Test (Gst)

    Hot-collar tests are effective in locating cracks in porcelain, deterioration, or contamination of insulation in the upper section of a bushing, low compound or liquid level, or voids in compound often before such defects are noticeable with the previous tests. OMICRON...
  • Page 62 CP TD1 User Manual IN A IN B Mounting flange Paper insulation Main conductor Figure 6-5: "Hot collar" test Measured dissipation factor values should be temperature corrected to 20°C before being compared with reference values which are measured at 20°C.
  • Page 63 Frequency scans of bushing insulation are helpful for a better diagnosis as some problems cause a larger deviation at power frequencies which is better visible when comparing good and bad bushings. This additional information should be used as benchmark of the bushing for future comparison. OMICRON...

  • Page 64: Technical Data

    CP TD1 User Manual Technical data Technical data of the CP TD1 in combination with the Control Device 7.1.1 High-voltage output Conditions: Signals below 45 Hz with reduced values possible. Capacitive linear loads. Table 7-1: High-voltage output Terminal U / f 0...12 kV AC...
  • Page 65 < 0.5 % of reading + 0.02 % Utest = 300 V...10 kV 0...100 % 1. Reduced accuracy of PF at mains frequency or its harmonics. Mains frequency suppression available by precisely selecting a mains frequency of *50Hz or *60Hz in the "Hz" column. OMICRON...
  • Page 66 CP TD1 User Manual ϕ Phase angle ϕ Table 7-9: Phase angle Range Typical accuracy Conditions -90 °...+90 ° error < 0.01 ° Vtest = 300 V...10 kV Impedance Z Table 7-10: Impedance Z Range Typical accuracy Conditions ...1200 M error <...

  • Page 67: Mechanical Data

    18.9 kg / 41.7 lb 23.2 x 29.2 x 14.6 inches 750 x 1050 x 600 mm Equipment 85 kg / 187.5 lb CP TD1, CPC 100, 29.5 x 41.3 x 23.6 inches equipment & trolley Equipment & packing 125 kg / 275.8 lb...

  • Page 68: Standards

    CP TD1 User Manual Standards Table 7-17: Standards conformity Safety Safety IEC / EN / UL 61010-1 IEC/EN 61326-1 (industrial electromagnetic environment) FCC subpart B of part 15, class A Other Shock IEC 60068-2-27 (operating), 15 g/11 ms, half-sinusoid IEC 60068-2-6 (operating), 10...150 Hz, acceleration 2 g...

  • Page 69: Support

    OMICRON Academy – learn more www.omicronenergy.com/academy Learn more about your product in one of the training courses offered by the OMICRON Academy. OMICRON electronics GmbH, Oberes Ried 1, 6833 Klaus, Austria, +43 59495 OMICRON...
  • Page 70 ENU 1035 05 03...

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