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
3-phase voltage RMS
3-phase current RMS
3-phase active loss
3-phase reactive loss
3-phase average voltage
3-phase voltage average value
3-phase current average value
Total power
No-load current percentage
Impedance voltage percentage
Frequency
Power factor
Induced voltage test
Power frequency withstand voltage test
Temperature rising test
III. Specifications
Transformer Power analyzer
Voltage range: 0-100V, current measurement range 0.1-5A, accuracy 0.2%.
Power U*I, accuracy 0.5%.
Power factor 0.050-1.000, accuracy 0.3%
Frequency 40-70Hz, accuracy 0.1%.
Power P
No-load current Io, %
No-load loss Po
Load loss Pk
Impedance voltage Uk
3phase Power Pa (Pab), Pb, Pc (Pbc)
Average line voltage Un
Average current In.
DC Winding Resistance Tester (for HV side)
Measure HV coil resistance. It also can measure continuously according to interval time.
Test process is controlled by microcomputer, automatically finish self-calibration, constant current determination, data processing and resistance display.
Output current: 10A, 2A, 500mA, 100mA
Measuring range: 500μΩ-200Ω
Resolution: 0.1μΩ
Measuring accuracy: ± (0.2% of the reading+2digit)
Power input: AC220V± 10%, 50±1Hz
Environmental temperature: -10ºC-50ºC
Environmental humidity: ≤85%RH
It can make DC resistance measurement, as well as HV heating resistor measurement in temperature-rise test.
DC Winding Resistance Tester (for LV side)
Measure LV coil resistance. It also can measure continuously according to interval time.
Test process is controlled by microcomputer, automatically finish self-calibration, constant current determination, data processing and resistance display.
Output current: 10A, 2A, 500mA, 100mA
Measuring range: 500μΩ-200Ω
Resolution: 0.1μΩ
Measuring accuracy: ± (0.2% of the reading+2digit)
Power input: AC220V± 10%, 50±1Hz
Environmental temperature: -10ºC-50ºC
Environmental humidity: ≤85%RH
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.
Measurement range of resistor: 0-2000Ω
Measurement range of temperature 0-200ºC
16channel temperature sensor.
With fast and efficient communication port, which shorten communication time greatly.
Environment temperature support: 4pcs.
AC testing transformer
Rated capacity: 10kVA
Rated output voltage: 0-100kV.
Rated output current: 0-100mA
Rated input voltage: 0-400V
Rated input current: 0-25A
Working frequency: 60Hz
Frequency generator set
Output voltage: 40-800V
Rated capacity: 20kW
Input voltage: 380V
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 40Vto 800V.
40kVA 3-phase regulator (Inside the HV auxiliary cabinet)
Capacity: 40kVA
Input voltage: 400V
Output voltage: 0-450V.
Intermediate transformer 30kVA (Inside the HV auxiliary cabinet)
Rated capacity: 30kVA
Rated input voltage: 0.4kV
Rated output voltage: 3kV, rated output current 5.77A
Withstand class 15kV, time 60s
Impedance voltage is no more than 4%
Meet the requirement of 24hours temperature rise test.
Induced voltage test: it is considered at continuous time operation with 2times voltage with load.
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