The device is mainly needle 220kV and below for all the main electrical equipment such as transformers, bus switch ac withstand voltage test of the design and manufacture.The reactor is designed in more than one seperately, which not only can meet the test condition requirements for equipments with high voltage and low current,  Possessing a wider application scope, it is the ideal withstand voltage equipment for prefecture-level, municipal-level and county-level high-voltage test departements as well as power installation and repair & testing engineering units. 

This unit mainly consists of variable-frequency power supply, exciting transformer, reactor and capacitive voltage divider.

Technical Parameters

1. One set of variable-frequency power supply:

Rated power: 75kVA

Input voltage:  three phase of 380V±10% and 45～65Hz

Output voltage: 0～400V adjustable

Output voltage frequency: 30～300Hz

0.1Hz adjustable stepping

Instability degree of frequency ≤0.02%

Output current: 0～187A

2. High-voltage resonane reactor 2sets : 280kV/2.679A

Rated working voltage：250kV

Rated working current：2.679A

Rated inductance value：250H

Temperature rise should be less than 60℃.

Working frequency: 30~300Hz

3. One set of Excitation Transformer：                                     

Rated capacity：75kVA

Rated capacity：400V

Output voltage：6/12/24kV

4. One set of capacitive divider: 560kV, pure capacitance

Its own capacitance：1500pF

Working frequency: 30～300Hz

Uncertainty: 1.5%

Rated voltage:280kV/3000pF；560kV/1500pF；

5. 1 set of test line and accessories:

1) 1 set of internal connecting line

2) 2 reactor insulation base

3) 2 equal pressure ball

4) 1 set of voltage divider stent

5) 1 piece of operation instruction

6) 1 piece of test report