1, Meet with 300mm2, 10kV cable AC pressure test, length 2km, capacitance ≤ 0.74 uF, test frequency 30 ~ 300Hz, test voltage U ≤ 22kV.

2, Meet  with 10kV switch cabinet, Transformer AC pressure test, test frequency 30 ~ 300Hz, test voltage U ≤ 42kV.

3, Meet the 35kV Transformer AC pressure test, test frequency 45 ~ 65Hz, test voltage U ≤ 68kV.

System technical parameters

Rated output voltage: 0 ~ 88kV

Resonance voltage wave type: sine wave, waveform distortion rate of 1.0 %

Maximum test current; 1A

Maximum test capacity: 88 kVA

Output frequency: 30 ~ 300 Hz

Working time: 15 minutes of continuous working time under full power output

Quality factors: 30 ~ 90

Input power supply: single phase 220V or three-phase 380V ± 5 %, 50Hz

Environmental temperature: -15 °C ~ +40 °C

Relative humidity: 90RH %, no condensation condition

Altitude: 3500m

Noise: ≤ 50dB

Device capacity determination

Meet 300mm2, 10kV cable AC voltage test, length 2km, capacitance ≤ 0.74 uF, test frequency 30 ~ 300Hz, test voltage U ≤ 22kV.

Frequency 38 Hz

Test current I = 2π fU test = 2π × 38 × 0.74 × 10-6 × 22 × 103 = 3.9 A

Corresponding reactor inductance L = 1 / Ω 2C = 24H

The design of a four-node reactor and the use of a four-node reactor in parallel, the parameters of the single throttle reactor are 22kVA/22kV/1A / 96H, and the total capacity of the device is 88kVA.

Conclusion: The capacity of the device is set at 88kVA/22kV/22kV, which is divided into four sections. The single section of the reactor is 22kVA/22kV/1A / 96H. The test requirements of the test subjects can be met by using the reactor combination.

Use table of relationships in tests

Equipment combination

Trial product

Reactor 22kVA/22kV

Section II

Selection of the output end of the excitation Transformer

Meet 10 kV/300 MM2 cable(test voltage 22 kV, test time 5 min)

Length less than 500M

Use reactor section

1.5 kV

Length 500 ~ 1000M

Use reactor section 2 in parallel

1.5 kV

Length 1000 ~ 1500m

Use the reactor in three sections in parallel

1.5 kV

Length 1500 ~ 2000m

Use the reactor in four sections in parallel.

1.5 kV

Meet 10kV switchgear, Transformer,(test voltage 42 kV, test time 1 min)

Use reactor section 2 in Series

1.5 kV

Meeting 35 kV Transformer(test voltage 68 kV, test time 1 min)

Use reactor four sections in Series

3kV

1,Make full use of our advantages in electronic measurement technology and electromagnetic compatibility, fully develop, design and produce all the components of this equipment including: inverter power supply, excitation Transformer, pouring high voltage reactor and high-precision capacitor divider.

2, with manual / automatic mode, large screen display, test parameter setting, and automatic timing and operation prompt function.

3, with a number of protection functions, such as: overpressure, overcurrent protection, discharge protection, dissonance protection and so on.