GDVA-405 Automatic CT PT Analyzer with 4KV Voltage Booster for CVT Turns Ratio Test IEC60044-5
Product Description
GDVA-405
Automatic CT PT Analyzer with 4KV Voltage Booster for CVT Turns Ratio Test IEC60044-5
Host of GDVA-405 Automatic CT PT Analyzer
External 4KV voltage booster for CVT Ratio and Error test (Optional)
Capacitive voltage transformers combine high voltage division with electromagnetic conversion, and their testing work is crucial to ensure the reliability of energy metering, relay protection, and system monitoring. However, the unique structure of CVT also brings specific testing challenges, namely the inability to directly conduct conventional transformer characteristic tests on the primary side.
Traditional methods require the use of multiple devices, complex physical disconnection and connection, which is time-consuming and poses security risks. Our GDVA-405 Automatic CT PT analyzer has completely changed this situation through integrated design and intelligent processes.
1. Characteristics
1) Compliance assurance: Our testing logic and process design strictly follow IEC60044-5 (IEC 61869-5) to ensure the authority and reliability of the testing methods for capacitive voltage transformers.
2) Guided testing process: The user interface provides a clear CVT testing specific menu, guiding operators to complete wiring and testing in the correct order, greatly reducing preparation time and human errors.
3) High precision measurement: Optional 4KV voltage booster, CVT ratio error can be less than 0.05%.
4) Data Management and Reporting: Automatically generate professional test reports that comply with international standards, including all test data, curves, and conclusions, supporting one click export for easy archiving and auditing.
5) Computer control: Connect the laptop to GDVA-405 Automatic CT PT Analyzer via Ethernet to achieve computer control operations.
2. Test Items by GDVA-405 Automatic CT PT Analyzer:
| Test Items for Current Transformer | Test Items for Voltage Transformer |
1) Ratio error and phase error test for all CTs. 2) Excitation curve and knee point test for all CTs. 3) Instrument factor FS test of measurement CTs. 4) Accuracy limit factor ALF measurement of protection CTs. 5) CT Winding resistance measurement. 6) Short current factor Kssc and dimension factor Ktd test for transient protection CTs. 7) CT polarity test. 8) CT secondary burden test. 9) CT nameplate deduce. 10) Test multi taps CT with switch box (Optional). 11)Test bush CT inside body of power transformer. | 1) Ratio error and phase error test of VT. 2) Excitation curve test of VT. 3) VT Secondary burden test. 4) Winding resistance test of VT primary and secondary. 5) VT and CVT ratio error test with 4KV voltage booster (Optional). 6) VT induce voltage withstand test. |
General functions: 1) Making word report automatic. 2) Auto comparison of test results and standard requirements. And then give conclusion pass or fail for sample CT. 3) Tester can be operated by laptop through Ethernet port. 4) PC application support bulk report making. | |
3. Function and Technical Index:
1) Test standards: IEC60044-1, IEC60044-6, IEC60044-2, IEC60044-5, IEC61869, GB-1207, GB-1208, GB-16849, C57.13.
2) Power supply: AC220V±10%, 50/60Hz±10%.
3) Voltage output: 0.1~160V AC(AC 0-4KV with external voltage booster,optional).
4) Current output: 0.001~5A(RMS), Peak value 15A.
5) Power output: 500VA.
6) Maximum knee voltage measurement: 45KV.
7) Current measurement:
Range: 0~10A (automatically change range in 0.004/0.04/0.4/2/10A auto range)
Error: <±0.1%+0.01%FS.
8) Voltage measurement:
Range: 0~200V (automatically change range in 1V/10V/120V/240V auto range).
Error: < ±0.1%+0.01%FS.
9) Turns ratio measurement:
Range:1~35000
1~2000 error<0.05%
2000~5000 error<0.1%
5000~35000 error<0.2%
10) Ratio error of CT: Typical <0.02%, Assured <0.1%, Resolution <0.01%.
11) Phase measurement: error < 2min; resolution: 0.01min.
11) Winding resistance measurement:
Range:0~10kΩ (automatically change range in 2ohm / 20ohm / 160ohm / 1kohm / 10kohm auto range).
Error: < 0.2%RDG+0.02%FS.
Maximum resolution: 0.1mΩ.
12) Temperature measurement:-50~100 Celsius degree; error<3 Celsius degree.
13) CT Secondary burden:
Range: 0~160ohm (automatically change range in 2ohm/20ohm/160ohm auto range) .
Error: <0.2%RDG+0.02%FS.
Maximum resolution: 0.001ohm.
14) PT Secondary burden and admittance test:
Burden Range: 0~80kohm (automatically change range in 320ohm/5.3kohm/80kohm auto range).
Admittance Range: 0-100mS.
Error :<0.2%RDG+0.02%FS .
Maximum resolution: 0.1ohm.
15) PT ratio measurement:
Range: 1~30000
1~2000 error<0.1%
2000~10000 error<0.2%
10000~30000 error<0.5%
With 4KV voltage booster: 1-2200 error <0.05%.
16) VT ratio error measurement phase error <30min, resolution 0.1min.
17) VT excitation mode ratio error measurement. Ratio error <0.1%, phase Error<3min.
17) CVT ratio measurement 1-2200 error< 0.05%(with 4kv voltage booster only,Optional).
18）Make evaluation for test results according to selected standards.
19) Make word report for all test results.
20) Bulk report application could make more than 1000 test records in once a time .
21) Measure the ratio errors and phase angle errors at rated burden and working burden in one time.
22) Compare excitation curves with saved excitation curves in the same window.
23) Memory capacity: >30000 groups test results .
24)Working condition: temperature: -10℃~50℃; moist: ≤90%.
25) Size: 485mm×356mm×183mm.
26) Net Weight: <15kg .
4. Magnetic Voltage Transformer and Capacitive Voltage Transformer CVT Ratio Test with 4KV Voltage Booster(Optional):
If you have selected the 4KV Voltage Booster, you can use it to test magnetic voltage transformer and capacitive voltage transformer in high accuracy. The reference connection diagram is as figure 3.14. The test setup window is as figure 5.16 when you select VT ratio test with 4KV Voltage Booster.
Figure 4.1 Setup window
Figure 4.2 Wiring Diagram with 4KV Voltage Booster
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