一、Scope of application

This generator is suitable for air gaps with voltage levels of 35 kV and below, bushings, power transformers (capacity 2500 kVA and below) and transformers, reactors, arc suppression coils, switch cabinets, ring network cabinets, cable branch boxes, circuit breakers, load switches and other test products to perform standard lightning impulse voltage full wave and chopped wave tests.

二、General Conditions of Use

Altitude: £1000m

Ambient temperature: -5℃～＋40℃

Relative humidity: <90%

Maximum daily temperature difference: 25℃

Usage environment: indoors

No conductive dust

No fire and explosion hazard

No gas that corrodes metals and insulation

The waveform of the power supply voltage is a real sine wave, and the waveform distortion rate is <5%

三、Follow standards

GB/T 311.1 Insulation and coordination of high-voltage power transmission and transformation equipment

GB/T 16927.1 High voltage test technology Part 1 General test requirements

GB/T 16927.2 High voltage test technology Part 2 Measurement system

GB/T 16896.1 Digital recorder for high voltage impulse test

JB/T 7616 Steep wave impulse withstand test for high voltage line insulators

DL/T557 Steep wave impulse test, definition, test method and criterion for high voltage line insulators

ZBF24001 Implementation rules for impulse voltage test

四、Technical Parameters

1. Nominal voltage: ±400kV

2. Rated level voltage: ±100kV

3. Nominal energy: 20kJ

4. Total impulse capacitance: 0.25 microfarad (single pulse capacitor 2 microfarad/50 kV, 8 units in total).

5. Total level: 4 levels

6. Standard waveform parameters:

(1) Standard lightning impulse voltage full wave, ±1.2/50ms voltage utilization factor>85% (greater than 90% when no-load 400PF);

Impact voltage waveform parameters and their deviations meet the requirements of relevant national GB311 and GB16927 standards.

7. Minimum output voltage greater than 10% nominal voltage

8. Duration of use: above 70% rated voltage, continuous operation can be achieved by charging and discharging once every 120 seconds; below 70% rated voltage, continuous operation can be achieved by charging and discharging once every 60 seconds.