Professional Provider of Power Testing Instrument PCT200 Series CT/PT Test System

Transcription

1 Professional Provider of Power Testing Instrument PCT200 Series CT/PT Test System TP YCT Bushing type CT PT Bushing Type CT M type CT GIS CT PT PONOO POWER CO., LTD. No.139 Jinghai Third Road, BD, Beijing, China Tel : +86 (10) Fax : +86 (10) PONOO POWER CO., LTD

2 o l t a g e Principle Excitation characteristics test based on DC method Ratio test based on voltage method Features: 1. Test CT according to IEC /6. IEC and NSI/IEEE C Can test all types of CT 3. One test can get all CT parameters 4. Fast test for excitation check 10k knee point check time: 50s 1k knee point check time: 15s 5. PT test Ratio Polarity Excitation Burden <Conventional method> s <New method> ariable- Frequencyv power source T1 T2 Tx v Tx Features of new method: Cancheck CT with high knee point value Highefficiency, high accuracy, more safe <Conventional method> Current source Current source is at primary side and current measurement is at the secondary side <New method> ol ta ge s o ur ce oltage source is at secondary side and oltage measurement is at primary side Features of new method: Ratiocheck up to 30000:1 Cancheck bushing CT Cancheck GIS CT Error check with extrapolation method for M type CT Test special CT P1 P2 S1 S2 Load Current source L2 Standard CT L1 P1 CT under test P2 K2 K 1 S1 S2 CT Tester Load s o ur ce Getthe ratio error and angle error based on extrapolation method, no need to use extra standard CT nor standard load. Bushing type CT requires large power output capacity which conventional CT tester can not give. New test method can solve this problem Theprimary side length is long for GIS type CT and this r e q u i r e s l a r g e p o w e r o u t p u t c a p a c i t y w h i c h conventional CT test can not supply. New test method can solve this problem 01 02

3 Test at field Test Report Simple wiring PCT200i Report PCT series report analyze software P1 S1 Load S2 P2 Standard ccessories Soft bag Test leads SoftwareInterface Signal Cable(Double wired) 2.5mm2 3m 2 PCT200i operation TransportationCase Signal Cable Double wired 0.75mm2 15m 1 (ntiwater&vibration) Earthing Lead with Clap 4mm2 3m 1 Excelformat test report 4size Testresult can be exported to key drive through USB port. Cansave results in non-volatile memory 03 Claps with Jaws open 30mm 4 Spike Test Pen 2 Cable Connector 2 Claps with Jaws open 10mm 4 04

4 Comparison with traditional method Shan Xi CT/PT Research Institute Field Test Examples Customer: Beijing High Transmission Company Comparison of excitation tests between conventional test method and PCT200i 500k TPY(transient) type CT Test data Report Comparison with traditional test method Test results Chongqing Power Plant Generator Output CT C omparison test with traditional CT test method was made in Shan Xi CT & PT Research Institute. 0.2 class reference CT was used in the test. The results show the maximum Ratio test difference is % and the maximum Phase deviation test difference is Generator output 6000:1 Test Result 05 06

5 Szechwan Substation (500k) Tianjing Huapanshan Power Plant 500k Tranformer Bushing CT Shan Xi 500k Substation 220k Transmission Line CT 500k ClassCT TPY 4000:1 Test result 500k Transformer Casing CT TPY Class Shen yang CT/PT factory TPY Class 1250:1test Datasheet Shen yang CT/PT factory 220k Transmission line GIS CT P Class 1250:1 excitation characteristic curve Generator Output TPY CT 200 k transmission line GIS CT Class P 1500:1 Test result 07 08

6 PCT200 Series CT/PT Test System Specifications pplication Output voltage range Specifications Output current range Output power Ratio test range Ratio test accuracy Max. knee point voltage Burden test range Burden test accuracy Winding resistance test rang CT Winding resistance test accuracy Test M/P/TP type CT and PT Test M/P/TP type CT and PT 0~120 0~120 0~5rms(15 peak) 0~5rms(15 peak) ~500rms(1500 peak) ~500rms(1500 peak) 35000:1~45000: :1~45000:5 ±0.1% ±0.05% Ω ±0.05%±1mΩ Typ ~1000Ω ±0.05%±1mΩ Typ Ω ±0.1%±1mΩ Gur. ±0.05%±1mΩ Typ. ±0.1%±1mΩ Gur ~1000Ω ±0.1%±1mΩ Gur. ±0.05%±1mΩ Typ. ±0.1%±1mΩ Gur. Instrument security factor (FS) Remanence flux (Kr) Secondary time constant (Ts) Unsaturated inductance (Lu) Saturated inductance (Ls) Excitation characteristic curve 10%(5%)error curve Rated symmetrical short circuit current factor (Kssc) ccuracy limiting voltage (Eal) Transient dimensioning factor (Ktd) Peak instantaneous error (ε^ ) Composite error (εc ) Phase displacement Others PCT200i ccuracy limiting factor (LF) Ratio error PT PCT200i ±0.05%Typ. ±0.1%Gur. ±0.02% Typ. ±0.05% Gur. 1min Typ. 3min Gur. 0.1min 1min Typ. 2min Gur. Ratio Polarity Excitation characteristic ac/50-60Hz (norminal) ac/45-65Hz (permissible) ac/50-60Hz (norminal) ac/45-65Hz (permissible) Main supply Operation temperature Relative humidity Dimensions Weight LCT display Operating system -10 С~50 С 0.01min -10 С~50 С 90%,non-condensing 90%,non-condensing 470 x200 x 245mm (W H L 470 x200 x 245mm (W H L 10Kg 8.4 inch, color display windows 09 14Kg 8.4 inch, color display windows 10