cngrovolt
Jn15-12 Hv Indoor Grounding Disconnect Switch for Transformer and Switchgear Vcb
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The Indoor High Voltage Grounding Switch is a protective device used in high-voltage power systems, widely applied in switchgear, substations, and distribution systems. It provides a reliable grounding connection during equipment maintenance or fault conditions, ensuring the safety of personnel and equipment.
Features
Voltage Ratings: 12kV / 24kV / 36kV / 40.5kV
Rated Current: 630A / 1250A / 1600A
Mechanical Life: ≥2000 operationsABB Electrification
Installation Type: Indoor, suitable for metal-enclosed switchgear
Technical Parameters
| Parameter | Unit | Value |
|---|---|---|
| Rated Voltage | kV | 12 / 24 / 36 / 40.5 |
| Rated Short-Time Withstand Current | kA | 31.5 / 40 |
| Rated Short-Circuit Duration | s | 4 |
| Rated Short-Circuit Making Current | kA | 80 / 100 |
| Rated Peak Withstand Current | kA | 80 / 100 |
| Power Frequency Withstand Voltage (1 min) | kV | 42 / 65 |
| Lightning Impulse Withstand Voltage | kV | 75 / 125 |
| Mechanical Life | times | ≥2000 |
Operating Environmental Conditions
- Ambient temperature: -15°C to +40°C
- Ambient humidity:
- Daily average relative humidity ≤ 95%
- Daily average vapor pressure ≤ 2.2×10-3 MPa
- Monthly average relative humidity ≤ 90%
- Monthly average vapor pressure ≤ 1.8×10-3 MPa
- Altitude: ≤ 1000m
- Seismic intensity: < 8
- Suitable for locations without dripping water, flammable or explosive hazards, chemical corrosive gases, or intense vibrations.
