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Omicron CP TD12 User Manual

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CP TD12/15
User Manual

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Summary of Contents for Omicron CP TD12

  • Page 1 CP TD12/15 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

    Functional components of the CP TD12/15 ......... . 23 2.4.1 CP TD12/15 grounding terminal and Booster input ......23 2.4.2 CP TD12/15 serial interface connector and measuring inputs .
  • Page 4 Assessment of measurements ........... . 56 Technical data Technical data of the CP TD12/15 in combination with the Control device ....58 7.1.1 High-voltage output .

  • Page 5: About This Manual

    Manual will help you to prevent danger, repair costs, and avoid possible down time due to incorrect operation. The CP TD12/15 User Manual must be always available on the site where the CP TD12/15 is used. The users of the CP TD12/15 must read this manual before operating the CP TD12/15 and observe the safety, installation, and operation instructions therein.

  • Page 6: Related Documents

    CP TD12/15 User Manual Related documents The following documents complete the information covered in the CP TD12/15 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 TD12/15 and its accessories, read the safety instructions in this User Manual carefully. Do not turn on the CP TD12/15 and do not operate the CP TD12/15 without understanding the safety information in this manual. If you do not understand some safety instructions, contact OMICRON before proceeding.

  • Page 8: General

    ► Make sure that the test object’s terminals which are to be connected to the CP TD12/15 do not carry any voltage potential. During a test, the only power source for a test object may be the CP TD12/15.
  • Page 9 Safety instructions ► Use the CP TD12/15 and its accessories only in a safe manner and only if they are in a technically sound condition, mindful of the dangers while paying attention to the User Manual. ► Make sure the use of the CP TD12/15 is in accordance with the regulations on site and the designated use described in this document.

  • Page 10: Handling Cables

    A loose connector or a connector falling off or into a test object carrying high-voltage is life-hazardous. Make sure the connectors are clean and dry before connecting. ► Plug the HV-plug into the CP TD12/15 until the plug is securely fastened. Confirm this by trying to gently pull it out.

  • Page 11: Orderly Measures

    The CP TD12/15 User Manual or alternatively the e-book must always be available at the operating site of the CP TD12/15. The users of the CP TD12/15 must read this manual before operating the CP TD12/15 and observe the safety, installation, and operation instructions therein.

  • Page 12: 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 13: Introduction

    Introduction Designated use The CP TD12/15 works as an add-on device to the CPC 100, CPC 80, or the TESTRANO 600, which are used to control the measurement. In this manual, these devices are collectively named Control device if no specific device is referred to. Do not connect the CP TD12/15 to any other Control device than the CPC 100, CPC 80, or the TESTRANO 600.

  • Page 14: Functional Components Of The Cpc 100 And Cpc 80

    CP TD12/15 User Manual Functional components of the CPC 100 and CPC 80 2.2.1 CPC 100 front panel Key lock Add test cards Display Locks front panel Test card functions Menu keys File functions Context-dependent Settings Navigation Test Emergency stop...

  • Page 15: Cpc 100 Side Panel

    Emergency Stop button is pressed. ► Handle the Ext. Booster connector with extreme caution. ► 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 80 Front Panel

    CP TD12/15 User Manual 2.2.3 CPC 80 front panel Display Menu keys Key lock Test card functions Context-dependent Locks front panel File functions Settings Navigation Test Emergency stop Soft-touch elements Start/Stop selector status lights button keyboard Figure 2-3: CPC 80 front panel...

  • Page 17: Cpc 80 Side Panel

    Emergency Stop button is pressed. ► Handle the Ext. Booster connector with extreme caution. ► 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 18: Status Lights

    If the CPC 100 or CPC 80 is supplied by mains and switched on, Dangerous operating and no or both status lights are on, the unit might be defective. condition ► Contact OMICRON support (see "Support" on page 64). OMICRON...

  • Page 19: Emergency Stop Button

    Emergency Stop button is pressed. ► Handle the Ext. Booster connector with extreme caution. ► 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 20: Epc Interface

    CP TD12/15 User Manual 2.2.7 ePC Interface Green LED RJ-45 socket CPC connected to a PC or network For connection to a PC or a network hub Serial interface For connection to other OMICRON devices USB connector SAFETY connector For OMICRON safety...

  • Page 21: Functional Components Of Testrano 600

    Introduction Functional components of TESTRANO 600 2.3.1 TESTRANO 600 front panel Multi-touch screen* Emergency stop button USB-port for USB drive* I/O status lights Test Start/Stop *Display version only Figure 2-8: TESTRANO 600 front panel with display OMICRON...

  • Page 22: Testrano 600 Side Panel

    CP TD12/15 User Manual 2.3.2 TESTRANO 600 side panel Equipotential ground terminal EXTERNAL BOOSTER SAFETY 1 (IN for remote control) Master connector for OMICRON safety accessories SAFETY 2 (OUT for remote control) Slave connector for OMICRON safety accessories Power switch...

  • Page 23: Functional Components Of The Cp Td12/15

    * For more details on the interlock function, refer to 2.4.4 "Safety and interlock functions" on page 24. Figure 2-10: Grounding terminal and booster input of the CP TD12/15 (left side of the device) 2.4.2 CP TD12/15 serial interface connector and measuring inputs...

  • Page 24: Cp Td12/15 High-Voltage Connector

    (measurement ground has no contact to protective ground) • HV-cable is not connected to the CP TD12/15 Additionally, the interlock function is active when an external CP CR600 is connected. The CP TD12/15 will not work if the interlock function detects one of the following problems: •...

  • Page 25: Application

    ► If there is a longer distance between the location of the CP TD12/15 and the area of danger (that is, the test object), a second person with an additional "Emergency Stop"...

  • Page 26: Connecting The Cp Td12/15 To The Control Device

    MEASUREMENT GROUND CABLE MEASUREMENT GROUND EQUIPOTENTIAL GROUND (PE) Figure 3-1: Connecting the CP TD12/15 to the CPC 100, CPC 80 or TESTRANO 600 DANGER Death or severe injury caused by high voltage or current ► Never use the CP TD12/15 without connecting measurement ground with the supplied cable.
  • Page 27 6. Connect the CP TD12/15’s "SERIAL" to the Control device’s "SERIAL" with the serial cable. 7. Pull out the measuring cables from the cable drum and connect the test object to the CP TD12/15’s measuring inputs IN A and IN B.

  • Page 28: Measurement

    12.Verify that the PE connection of the Control device is properly made. Measurement The CP TD12/15 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 29: Disconnecting The Cp Td12/15

    6. Disconnect the booster cable from the CP TD12/15. 7. Disconnect the serial cable from the CP TD12/15. 8. Disconnect the HV- and LV-cables from the CP TD12/15 and the test object. 9. Disconnect the measurement ground from the test object and the CP TD12/15.

  • Page 30: Introduction To Capacitance And Dissipation Factor Measurement

    CP TD12/15 User Manual Introduction to capacitance and dissipation factor measurement Capacitance (C) and Dissipation Factor (DF) measurement is an established and important insulation diagnosis method. It can detect: • Insulation failures • Aging of insulation • Contamination of insulation liquids with particles •...
  • Page 31 ) and the vector diagram are shown in Figure 4-3. Withδ 1 « δ ≅ δ ≅ ϕ π δ -- - ϕ – ----------------------- - δ ϕ ---------------------- 1 PF – Figure 4-3: Correlation between DF and PF OMICRON...

  • Page 32: Measurement Of Capacitance And Dissipation Factor / Power Factor

    Figure 4-4: CP TD12/15 measuring principle The CP TD12/15 test system utilizes a method similar to that of the Schering bridge. The main difference is that the CP TD12/15 measuring principle does not require tuning for measuring C and DF. C is a low loss reference capacitor.

  • Page 33: Ust" And "Gst" Measurements Using The Guard Technology

    "UST" and "GST" Measurements Using the Guard Technology The CP TD12/15 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 34: 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 TD12/15 ground terminal to the transformer's (substation) ground. OMICRON...

  • Page 35: Dissipation Factor Measurement

    (displaced wedging, buckling etc.). If winding damage is suspected, then the capacitance measurement should be supplemented by a leakage reactance measurement. A separate test can be done for each phase with this measurement technique. Therefore, this method is more sensitive to small changes in one phase. OMICRON...

  • Page 36: Two-Winding Transformer

    CP TD12/15 User Manual Two-winding transformer The two-winding transformer is a very good example to show the different parts of insulation which can be measured in a transformer. A two-winding transformer with high and low voltage windings provides three different insulations which...
  • Page 37 . To measure C and C , the HV output of the CP TD12/15 is connected to the HV-side and IN A to the LV-side (see Figure 5-3 on page 37). To prevent induced currents, all bushings of the HV-side are shortened, the same applies to the LV-side.
  • Page 38 IN B Measurement ground IN A Figure 5-4: CP TD12/15 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 39: Measurements On Two-Winding Transformers

    Alternative test for C High (HV) Low (LV) Low (LV) High (HV) 1. ANSI Standard 62-1995: "IEEE Guide for Diagnostic Field testing of Electric Power Apparatus - Part 1: Oil Filled Power Transformers, Regulators, and Reactors", IEEE New York, 1995 OMICRON...

  • Page 40: Measurements On A Two-Winding Transformer With The Cpc 100 And Cpc 80

    CP TD12/15 User Manual 5.4.1 Measurements on a two-winding transformer with the CPC 100 and CPC 80 Figures 5-6 and 5-7 show the preparation with the CPC Editor and the test results in MS Excel format. Figure 5-6: Two-winding transformer test preparation with CPC Editor Figure 5-7: 10 kV results for a two-winding transformer (50 Hz) 5.4.2...

  • Page 41: Three-Winding Transformer

    Figure 5-8: Insulations of a three-winding transformer All phases and the neutral terminal of one winding (H, L and T) have to be short-circuited. Due to the inductance of the windings, resonant effects may occur and influence the measurement. OMICRON...
  • Page 42 CP TD12/15 User Manual When the CP TD12/15’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 43 Measurement ground IN A Figure 5-10: CP TD12/15 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 44 Measurement ground IN A Figure 5-11: CP TD12/15 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 45: Measurements On Three-Winding Transformers

    1. ANSI Standard 62-1995: "IEEE Guide for Diagnostic Field testing of Electric Power Apparatus - Part 1: Oil Filled Power Transformers, Regulators, and Reactors", IEEE New York, 1995 2. IEEE Standard C57.12.90: "IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers", IEEE New York, 1995 OMICRON...

  • Page 46: 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 HV-winding connected to the HV-output of the CP TD12/15. First file...
  • Page 47 Power transformers Figure 5-15: Measurement of C and C in GST g-B mode Figure 5-16: Voltage-scan of HV-windings to tank and core (GST gA+B) OMICRON...
  • Page 48 Second file A second test file contains the tests with the LV-winding connected to the HV-output of the CP TD12/15. Figure 5-18 shows the first screen with the connection instructions. Figure 5-18: Connection instructions for the tests with energized LV-winding...
  • Page 49 A third test file is used for the tests with the tertiary winding connected to the HV-output of the CP TD12/15. 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 50 CP TD12/15 User Manual Figure 5-20 shows the results for 10 kV: H+HL In line 4, the difference of the capacity values of test 1 - test 2 is calculated so it can be compared to test 3. In lines 8 and 12, the differences of lines 5-6 and 9-10 are calculated to also enable a comparison to tests 7 and 11.

  • Page 51: Measurements On A Three-Winding Transformer With Testrano 600

    Neutral. In this case there are 2 bushings per phase, which have to be connected for the DF test. All combinations can be measured: Phase to phase and phase to tank (ground). OMICRON...

  • Page 52: High-Voltage Bushings

    CP TD12/15 User Manual High-voltage bushings High-voltage bushings are essential parts of power transformers, circuit breakers and of other power apparatus. More than 37 % of all fire and explosion failures of high-voltage power transformer failures are caused by defective bushings .

  • Page 53: Capacitance And Df Measurement On High-Voltage Bushings

    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 54 CP TD12/15 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) Measurement ground Paper insulation Main conductor Figure 6-2: UST-A bushing test (C...

  • Page 55: 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 56: Assessment Of Measurements

    CP TD12/15 User Manual IN A IN B Mounting flange Paper insulation Measurement ground Main conductor Figure 6-4: "Hot collar" test Assessment of measurements Measured dissipation factor values should be temperature corrected to 20°C before being compared with reference values which are measured at 20°C.
  • Page 57 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 58: Technical Data

    CP TD12/15 User Manual Technical data Technical data of the CP TD12/15 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: CP TD12 – High-voltage output...
  • Page 59 45 Hz to 65 Hz, 98 % of all units have an accuracy which is better than specified. 2. IN A (red) or IN B (blue), depending on the mode. Test voltage (RMS, selective) Table 7-6: CP TD12 – Test voltage Condition: U > 2 kV Range Typical accuracy 2 kV...12 kV AC...
  • Page 60 CP TD12/15 User Manual Capacitance Cp (equivalent parallel circuit) Table 7-8: Capacitance Cp Range Typical accuracy Conditions error < 0.05 % of reading + 0.1 pF Ix < 8 mA, Utest = 2 kV...10 kV 1 pF...3 µF error < 0.2 % of reading Ix >...
  • Page 61 1. "Typical accuracy" means at temperatures of 23 °C ± 5 K, after a warm-up time of more than 25 min, and in a frequency range of 45 Hz to 65 Hz, 98 % of all units have an accuracy which is better than specified. Power P, Q, S (selective) Table 7-15: CP TD12 – Power P, Q, S Range Typical accuracy 0...3.6 kW...

  • Page 62: Mechanical Data

    CP TD12/15 User Manual Mechanical data Table 7-17: Mechanical data Characteristic Rating Dimensions CP TD12/15 460 × 317 × 223 mm (W × H × D) 18.1 × 12.5 × 8.8 inches Weight CP TD12 23 kg / 51 lb...

  • Page 63: Standards

    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 Vibration continuous (20 m/s ); 10 cycles per axis Humidity IEC/EN 60068-2-78 (5…95 % relative humidity, no condensation) OMICRON...

  • Page 64: 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 65 ENU 1226 05 03...

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