Huazheng HZCT-100B Manual
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Huazheng HZCT-100B Manual

Ct pt analyzer
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HZCT-100B
CT PT Analyzer
Huazheng Electric Manufacturing (Baoding) Co., Ltd

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  • Page 1 HZCT-100B CT PT Analyzer Huazheng Electric Manufacturing (Baoding) Co., Ltd...
  • Page 2 Dear Customers, Thank you for purchasing our HZCT-100B CT PT Analyzer. Before you use the product for the first time, please carefully read this Manual which can help you skillfully use the Tester. Our aim is to improve our products continuously, so that the product you use may be a little bit different from the Manual.
  • Page 3 Prudent Warranty For the products manufactured by our Company, if the defects appear within 3 months from the date of delivery, we can provide the replacement; if the defects appear within one year from the data of delivery, we can provide free services and repairs; if the defects appear more than one year after delivery, we can provide life-long paid maintenance services.
  • Page 4 Avoid touching the exposed circuits or charged metal. When the product is electrified, never touch the exposed contacts or parts.
  • Page 5 In case of suspected failure, never operate the product. If you suspect the product is damaged, please contact the maintenance personnel for examination and never operate the product. Never operate the product in a humid environment. Never operate the product in an explosive environment. Keep the surface of the product clean and dry.

  • Page 6: Table Of Contents

    Contents I.Instrument Characteristics And Parameters................1 1.1 Characteristics........................2 1.2 Panel............................2 1.3 Technical Parameter......................2 II.User Interface And Method Of Operation................. 3 2.1 Current Transformer......................3 2.2 Voltage Transformer......................11 2.3 Self-test Page........................14 2.5 Button Function........................15 III.Appendix............................. 17 A. Principle Of Low-frequency Test..................17 B. 10% Error Curve........................18 C.

  • Page 7: I.instrument Characteristics And Parameters

    I.Instrument Characteristics And Parameters HZCT-100B CT PT Analyzer is new product created after widely adopt customers’ advices and deep theoretical study. It is based on the automatic FA Series Transformer Tester General which is produced by our company that is widely acclaimed and applied.

  • Page 8: Panel

    • Green S1, black S2 terminal: measure output voltage • Red P1, black P2 terminal: measure inductive voltage • Keyboard: Enter the value and operational command • LCD screen: GUI 1.3 Technical Parameter HZCT-100B Usage CT， PT Output 0~180Vrms，12Arms，36A（peak value）...

  • Page 9: Ii.user Interface And Method Of Operation

    Range 0~300Ω DC resistance accuracy 0.2%±2mΩ Range 0~1000VA Burden accuracy 0.2%±0.02VA Power supply AC220V±10%，50Hz Operating temperature : -10 C~50 C ， ο ο Environmental Conditions Humidity :≤90% Dimensions: 365 mm×290 Weight and Dimensions mm×153mm,Weight<10kg II.User Interface And Method Of Operation 2.1 Current Transformer In Para interface, use the Rotating mouse to switch cursor in transformer type frame, and then choose the current transformer (CT).
  • Page 10 Measure CT’s secondary winding resistance and excitation √ √ √ √ √ Fig 2.1 characteristic, check it’s ratio and polarity Measure CT’s √ Fig 2.2 secondary burden Note：The ‘√’ means valid, and the blank means invalid Step: Step1. According to the CT testing project description of the table 2.1 to wiring (For all the CT structures, please refer to the description of appendix D for the actual connection mode) Step 2.
  • Page 11 2.1.2 Expansion Parameters Fig 2.3 Basic parameter Settings interface parameter Settings: Switch cursor to where the parameter you want to set by turning the Rotating mouse 1. Serial number and resistance number: Input letters and numbers, the filename default saved is “CT_ numbers _ winding number.ctp” 2.
  • Page 12 3. Measured accurately limit coefficient, Instrument security coefficient and symmetrical short-circuit current multiples 4. The measured transient dimensioning coefficient, peak transient error and second time constant For different CT, different parameters should be set. Details as table 2.2 Table 2.2 CT parameter description M-IEC R-IEC parameters...
  • Page 13 Current time limit for the first √ √ time,default:100m Time required to reach the specified accuracy during tal1 the first magnetization cycle,default:40ms Time required to reach the specified accuracy during the second magnetization √ √ cycle,default:500m s,Choose C-t1-O-tfr-C-t2-O, Cycle will be shown Current time limit for the second...
  • Page 14 Rated calculating √ coefficients Rated inflection √ point potential(Ek) correspondin √ g with Ek dimensionin √ g factor The rated equivalent Rated Ual √ quadratic limit voltage correspondin √ g with Ual Note: "√" expressed the need for settings that do not need to set up a blank. 2.1.3 Test Results The test result interface as shown in fig 2.4 Fig 2.4 The test result interface...
  • Page 15 result description M PR PX TPS TPX TPZ unit： VA， CT secondary Actual load √ √ √ √ √ √ √ √ measure actual load Power factor of actual Power factor √ √ √ √ √ √ √ √ Load load unit：...
  • Page 16 Peak Peak transient error of transient √ √ √ limiting e.m.f  error actual ALF √ √ Instrument actual instrument security √ security coefficient coefficient Symmetrical short-circuit actual symmetrical current short-circuit current √ √ √ √ multiples multiples Kssc transient actual transient dimensionin √...

  • Page 17: Voltage Transformer

    There're two polarity relationship for Polarity primary CT and √ √ √ √ √ √ √ √ secondary CT: Positive and Negative The relative error Turn ratio between measured √ √ error trun ratio and rated turn ratio Note: "√" expressed the need for settings that do not need to set up a blank 2.2 Voltage Transformer 2.2.1 Test Connection Used for selecting one or more experiment item, including three options such as...
  • Page 18 Step 3. Power on and prepare parameters Settings. Step 4.Then switch cursor to the “start” button to start Fig 2.5 PT’s DC resistance and excitation Fig 2.6 PT’s ratio and excitation 2.2.2 Expansion Parameters Fig 2.7 PT parameter establish interface parameter Settings: Switch cursor to where the parameter you want to set by turning the Rotating mouse 1.
  • Page 19 current room temperature for reference. 5. Rated frequency: 50Hz or 60Hz 6. Maximum test voltage: The equivalent voltage under the maximum frequency of output while testing 7. Maximum test current: The maximum AC current of output while testing 2.2.3 Test Results Test results interface as shown in Fig 2.8 Fig 2.8 PT’s test results interface According to different voltage transformer type and experiment item, the results will...

  • Page 20: Self-Test Page

    Ratio difference The current errors under rated load. √ √ Phase difference The D-value of phase under rated load. √ √ There're two polarity relationship for primary Polarity √ √ and secondary , Positive and Negative . 2.3 Self-test Page Fig 2.9 Self-test interface 2.4.1 Parameter Setting The required self-test parameters are shown in the table 2.7:...

  • Page 21: Button Function

    the same with actual voltage of instrument,it is OK. When Choosing Current test, the shorted output K1, K2 terminals. Do not take the wrong attention. Series connecting a multimerter between S1 and S2, if the current value of multimerter is the same with actual current of instrument,it is OK. 2.5 Button Function 2.5.1 Button Function For Parameter Interface (1)Open A Report...
  • Page 22 2.5.2 Button function for result page (1)Error Data Selecting the error data will show 5% and 10% error cases, the relationship of rated primary current multiple and the maximum burden is shown as Fig 2.13. These data is calculated according to the actual excitation. The calculation Method is given in appendix Fig 2.13 5% error data interface Fig 2.14 5% error curve interface (2)Error Curve...

  • Page 23: Iii.appendix

    Fig 2.15 excitation data Fig 2.16 Excitation curve interface (5)Ratio Page Used for displaying the test results of ratio. Polarity, ratio error, and phase displacement as shown in fig 2.17. Fig 2.17 ratio page III.Appendix A. Principle Of Low-frequency Test IEC60044-6 standard (corresponding to the national standard GB16847-1977) claims, CT test can be done in conditions lower in frequency than the rated, and avoid secondary windings the risk of failing to allow the terminal voltage.

  • Page 24: 10% Error Curve

    Where, : Secondary winding resistance : Secondary winding terminal voltage ：Secondary current  ：The initial flux Alternation  ) (t ： T the magnetic moment of the cross-linking The definition of Core Voltage:   （A.2） ) (t When the core voltage for the sinusoidal signal are: （A.3）...
  • Page 25 The ratio of differential current transformer is defined as:       （B.1） Current Transformer relay request a current equal to the maximum short-circuit current, the ratio difference is less than or equal to 10%. Difference in the ratio equivalent to 10%, the secondary current , and conversion to a secondary lateral excitation current...

  • Page 26: Actual Connection Method

    K1 and K2 jack, the yellow line and 2.5mm2 line CT secondary side connected to the HZCT-100B "Sec" jack of the S1 and S2, the attention of even the two black lines in the CT secondary side has received the same protection to terminal.
  • Page 27 Figure D.1 Typical Connection 1. HZCT-100B in the triangle connection transformer CT test conducted on the connection mode as shown in Figure D.2. Figure D.2 HZCT-100B in the triangle on the transformer connection when the connection mode test Figure D.2 HZCT-100B in the triangle on the transformer connection when the connection...
  • Page 28 Figure D.3 HZCT-100B on the transformer bushing testing at the time of CT Connection 4. HZCT-100B in the GIS (SF6) switch on the wiring of the CT test mode as shown in Figure D.4. NOTE: Disconnect all connected with the bus switch, grounding switch closed.

  • Page 29: Four-Terminal Method Of Measuring Principle Wiring

    4-side wiring method. Figure E.3 of the wiring is wrong. Adopt HZCT-100B measure the resistance, variable ratio, excitation; the law of transformers is required to use 4-side wiring, in figure E.4...
  • Page 30 Figure E.4 Four-terminal method under test must pay attention to wiring terminal connection winding. Figure E.5 the connection is correct, Figure E.6, 7 the connections are wrong. Figure E.5 Figure E.6 Figure E.7...

  • Page 31: Iv.packing List

    IV.Packing List Item Main engine Power line Ground lead Fuse pipe Red test line Yellow test line Green test line Print paper Special driver insurance tube Alligator clips（red 1 black 1 ） Small clip (2 black 1yellow 1 green ) Insert (2 red 2 black) Small tools U disk...

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