
How to Specify GIS High-Voltage Test Equipment
Define test voltage, waveform, specimen capacitance, measurement background, space and safety interfaces before requesting a test-system design.

High-energy metal-clad lightning impulse generator generating 1.2/50µs lightning and 250/2500µs switching impulses up to 4200kV.
Size the test source around the object, connection and test program.
IEC 60060-1 describes HV test techniques; IEC 60270 describes charge-based PD measurement. Confirm the apparatus test standard separately.
| Parameter | Value |
|---|---|
| Rated Impulse Voltage | 900 kV - 4200 kV |
| Stage Energy / Total Energy | 7.5 kJ/stage, up to 315 kJ total |
| Standard Waveforms | 1.2/50µs Lightning Full Wave, Chopped Wave, 250/2500µs Switching Wave |
| Internal Inductance | Ultra-low coaxial arrangement < 1.5 µH/stage |
| Spark Gap Control | Hermetic spark gaps with laser-triggered automated gap adjustment |
| Enclosure Design | Grounded horizontal/vertical pressure vessel conforming to ASME/GB150 |
| Measurement System | Shielded capacitive impulse divider + 100MS/s digital oscilloscope |
Dimensions, interfaces and replacement compatibility require approved drawings and technical review.
Extremely Low Inductance: Compact SF6 coaxial internal layout yields exceptionally fast front-time response (1.2µs ±30%).
Immunity to Environmental Pollution: Fully sealed gas containment prevents humidity and air contamination from altering spark gap firing.
Grounded outer enclosure supports personnel protection; verify site safety procedures and interlocks.
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Define test voltage, waveform, specimen capacitance, measurement background, space and safety interfaces before requesting a test-system design.

Identify voltage duty, field grading, moisture control, external insulation and altitude corrections in the project specification.

Use IEC 60137 for applicable complete AC bushings; confirm the edition, rating, type and routine tests, and report identifiers for the offered model.