I.The Scope
The generator is suitable for the test of the air gap insulator string, casing, power transformers and transformer standard lightning impulse voltage full wave, standard operating wave and chopped wave impulse voltage test.
II.The General Conditions of Use
Altitude: ≤1000m
Ambient temperature: -5 ℃ ~ +40 ℃
Relative humidity: ≤90％（20℃）
Use of the environment: indoor
Non-conductive dust
Grounding resistance < 0.5 Ω
No fire or explosion hazard
Earthquake resistance: 8 magnitude
There is no gas that corrodes metal and insulates
Supply voltage waveform is the actual sine wave, waveform distortion rate <5%
III.Follow The Standard
GB/T 311.1 Insulation and coordination of high voltage transmission and conversion equipment
GB/T 16927.1 high voltage test technology the first part of the test requirement
GB/T 16927.2 high voltage test technology second part measurement system
GB/T 16896.1 high voltage shock test with digital recorder
JB/T 7616 High-voltage line insulator shock resistance test
DL/T 557 High-voltage line insulator steep wave impact test, definition, test method and criterion
ZBF 24001 Implementation details of impact voltage test
IV.The Nominal Parameter Values
1. Nominal voltage: ±3000kV
2. Rated voltage: ±200kV
3. Nominal energy:450 kJ
4. impact the total capacitance: 0.1mF (3.0mF /100 kV single pulse capacitor, a total of 30)
5. Series: level 15
6. Impact voltage waveform parameters:6
(1) Standard lightning impulse voltage full wave, ±1.2/50ms voltage utilization factor>85% (more than 90% when no load 300PF);
(2) Truncated wave: cut-off time (2-6) ± 10% ms, zero-crossing coefficient ≤ 0.3%
(3) Standard operating impulse voltage wave 250±20% ms / 2500±60%ms,
The impulse voltage waveform parameters and their deviations are in line with the requirements of the national GB311 and GB16927 standards.
7, the lowest output voltage is greater than 10% of the nominal voltage
8. Duration of use: Above 70% of rated voltage, it can be continuously operated every 120 seconds after charging and discharging. It can be continuously operated after charging and discharging every 60 seconds under 70% of rated voltage.