400kV 10kJ Impulse Voltage Generator Complete Test System
1. Scope of Application
This generator is designed for conducting standard lightning impulse voltage full-wave tests on objects including, but not limited to:
Air gaps (≤ 35kV)
Reactor switches
Insulator strings
Bushings
Power transformers
Instrument transformers
2. General Operating Conditions
Altitude: ≤ 1000 m
Ambient Temperature: -5 °C to +40 °C
Relative Humidity: ≤ 90%
Maximum Daily Temperature Variation: 25 °C
Operating Environment: Indoor
Conditions:
Free from conductive dust
Free from fire and explosion hazards
No gases corrosive to metals or insulation present
Power Supply Voltage: Substantially sinusoidal waveform with a total harmonic distortion < 5%
3. Compliance Standards
The system complies with the following Chinese national and industry standards:
GB/T 311.1: Insulation Coordination for High-Voltage Transmission and Distribution Equipment
GB/T 16927.1: High-Voltage Test Techniques - Part 1: General Test Requirements
GB/T 16927.2: High-Voltage Test Techniques - Part 2: Measuring Systems
GB/T 16896.1: Digital Recorders for High-Voltage Impulse Tests
JB/T 7616: Steep Front Impulse Withstand Test for High-Voltage Line Insulators
DL/T 557: Steep Front Impulse Test, Definitions, Test Methods, and Criteria for High-Voltage Line Insulators
ZBF 24001: Rules for the Implementation of Impulse Voltage Tests
4. Rated Parameters
Nominal Voltage: 400 kV
Rated Stage Voltage: 100 kV
Nominal Energy: 10 kJ
Total Impulse Capacitance: 0.125 µF (Configured with 6 units of 1.0 µF / 50 kV pulse capacitors)
Total Number of Stages: 4
Standard Waveform Parameters:
Standard Lightning Impulse Voltage Full Wave: 1.2/50 µs
Voltage Efficiency: > 85% (> 90% under no-load condition with 300 pF)
Waveform parameters and tolerances conform to the relevant requirements of GB/T 311 and GB/T 16927.
Minimum Output Voltage: > 10% of Nominal Voltage
Duty Cycle / Continuous Operation:
At voltages > 70% of rated voltage: One charge/discharge cycle every 120 seconds.
At voltages ≤ 70% of rated voltage: One charge/discharge cycle every 60 seconds.