Single-phase 220 v AC test unit input power is converted into a three-phase 800 v power supply (RMS) standards, for a variety of quad other three-phase, single-phase on-load voltage regulating transformer tap-changer action features communicate with winding measurement, directly display tap-changer action in the process of test waveform in the process of change, saved the data automatically , the action time of intelligent computing, and output HTML report.

The DC test output of the device is A high-precision constant current source with 3-phase open 24V, and the current adopts two gears of 1.0a and 0.5a. When the test is conducted with winding mode, the high-precision constant current source can reduce the influence of the inductive component of the winding on the test.

1.Insulation performance:

a) Insulation resistance of the power input end to the enclosure＞20MΩ

b) Insulation level of test device should be able to withstand 1500V ac voltage (effective value)

2.Internal output ac inverter power supply

a) Power frequency: adjustable frequency (within the range of 45Hz to 55Hz)

b) Input voltage: Three phase 800V(valid value, varying with load)

c) Output capacity: Rated 1000VA, maximum instantaneous output 1500VA(lasts 200ms, overload protection does not work)

d) Voltage waveform distortion

e) Voltage phase Angle: 120 ° phase Angle difference ≯ 120 ° + 1 °

3 Internal output dc constant current power supply

a) Open voltage 24V

b) Current 1A, 0.5A optional

c) Resistance measurement range: 0.5～40Ω, precision: 2%+2digit

d) Time test range: 1 ~ 240mS; Precision: 0.2%+2 digit

4.Transducer accuracy:

a) Voltage and current sensor precision: 0.2 level

b) Transducer response speed≤15μs

c) Voltage range: 0V ~ 800V (effective value)

d) Current range: 0mA～100mA(effective value),0A～5A(effective value)

5 Data sampling

a) Sampling accuracy: 16digit

b) Sampling rate: 200K

c) Sampling storage depth: 64M

6. Net weight of AC test device: approx. 35kg(excluding cable box)

7. Dimensions: 530mm*320mm*370mm, aluminum alloy packaging