HVHIPOT Customized GDBT-300kVA/36kV Transformer Test system with test bench for transformer testing

Product Description

I. General information

GDBT-300kVA/36kV is mainly to make no-load, load and induction voltage test, power frequency withstand voltage test and temperature rising test for 36kV, 300kVA and below distribution transformers.

The measurement part is controlled by single chip. Digital display, no-load and short circuit test data will be sampling by single chip at the same time.


II. Test Items
 

1. 3-phase voltage RMS
2. 3-phase current RMS
3. 3-phase active loss
4. 3-phase reactive loss
5. 3-phase average voltage
6. 3-phase voltage average value
7. 3-phase current average value
8. Total power
9. No-load current percentage
10. Impedance voltage percentage
11. Frequency
12. Power factor
13. Induced voltage test
14. Power frequency withstand voltage test
15. Temperature rising test

III. Specifications

Transformer Power analyzer

1. Voltage range: 0-100V, current measurement range 0.1-5A, accuracy 0.2%.
2. Power U*I, accuracy 0.5%.
3. Power factor 0.050-1.000, accuracy 0.3%
4. Frequency 40-70Hz, accuracy 0.1%.
5. Power P
6. No-load current Io, %
7. No-load loss Po
8. Load loss Pk
9. Impedance voltage Uk
10. 3phase Power Pa (Pab), Pb, Pc (Pbc)
11. Average line voltage Un
12. Average current In.

DC Winding Resistance Tester (for HV side)

1. Measure HV coil resistance. It also can measure continuously according to interval time.
2. Test process is controlled by microcomputer, automatically finish self-calibration, constant current determination, data processing and resistance display.
3. Output current: 10A, 2A, 500mA, 100mA
4. Measuring range: 500μΩ-200Ω
5. Resolution: 0.1μΩ
6. Measuring accuracy: ± (0.2% of the reading+2digit)
7. Power input: AC220V± 10%, 50±1Hz
8. Environmental temperature: -10ºC-50ºC
9. Environmental humidity: ≤85%RH
10. It can make DC resistance measurement, as well as HV heating resistor measurement in temperature-rise test.

DC Winding Resistance Tester (for LV side)

1. Measure LV coil resistance. It also can measure continuously according to interval time.
2. Test process is controlled by microcomputer, automatically finish self-calibration, constant current determination, data processing and resistance display.
3. Output current: 10A, 2A, 500mA, 100mA
4. Measuring range: 500μΩ-200Ω
5. Resolution: 0.1μΩ
6. Measuring accuracy: ± (0.2% of the reading+2digit)
7. Power input: AC220V± 10%, 50±1Hz
8. Environmental temperature: -10ºC-50ºC
9. Environmental humidity: ≤85%RH
10. It can make DC resistance measurement, as well as LV heating resistor measurement in temperature-rise test.

Automatic Temperature Inspector
The PC on the test bench can read, record, and save test data automatically.

1. Measurement range of resistor: 0-2000Ω
2. Measurement range of temperature 0-200ºC 
3. 16channel temperature sensor.
4. With fast and efficient communication port, which shorten communication time greatly.
5. Environment temperature support: 4pcs.

AC testing transformer

1. Rated capacity: 10kVA
2. Rated output voltage: 0-100kV.
3. Rated output current: 0-100mA
4. Rated input voltage: 0-400V
5. Rated input current: 0-25A
6. Working frequency: 60Hz

Frequency generator set

1. Output voltage: 40-800V
2. Rated capacity: 20kW
3. Input voltage: 380V
4. Output frequency: 180Hz ± 2%

After the generator is started successfully, the no-load residual magnetization voltage of the intermediate frequency generator does not exceed 40V. By adjusting the excitation, the output voltage is continuously adjustable within the range of not exceeding 40V to 800V.

40kVA 3-phase regulator (Inside the HV auxiliary cabinet)

1. Capacity: 40kVA
2. Input voltage: 400V
3. Output voltage: 0-450V.

Intermediate transformer 30kVA (Inside the HV auxiliary cabinet)

1. Rated capacity: 30kVA
2. Rated input voltage: 0.4kV
3. Rated output voltage: 3kV, rated output current 5.77A
4. Withstand class 15kV, time 60s
5. Impedance voltage is no more than 4%
6. Meet the requirement of 24hours temperature rise test.
7. Induced voltage test: it is considered at continuous time operation with 2times voltage with load.

High Precision CT

1. Rated working voltage: 3kV/√3
2. Withstand voltage: 3kV.
3. Capacity: 5VA
4. Measuring range: 5-200A
5. Accuracy: class 0.05
6. Turns Ratio 25, 10, 5/5A.

High Precision PT

1. Rated working voltage: 3kV/√3
2. Withstand voltage: 4kV
3. Capacity: 1VA
4. Accuracy: class 0.05
5. Turns Ratio 3kV, 1.5kV/100V/√3.