The embedded pole is a high-voltage insulation component made of epoxy resin casting, widely used in medium and high-voltage vacuum circuit breakers (VCB), switchgear, and power distribution systems.
It integrates the vacuum interrupter, main conductive circuit, and insulation support into a single unit, enhancing dielectric performance, mechanical strength, and environmental adaptability.
The embedded pole offers advantages such as pollution resistance, moisture resistance, maintenance-free operation, and long service life.
It is ideal for various demanding environments, including substations, industrial enterprises, rail transit, and the new energy sector.
The main technical Paramenters
| Item | Unit | Value | |||
| Rated voltage | kV | 40.5 | |||
Rated Short-Circuit Breaking Current | kA | 25-31.5 | |||
| Rated Frequency | Hz | 50 | |||
Rated Current | A | 1250-1600 | |||
| Rated short time withstand current | kA | 25-31.5 | |||
| Rated peak withstand current | 63-80 | ||||
| Rated Lightning Impulse Withstand Voltage (Peak) | kV | 185 | |||
Rated order of operation | C-0.3s-CO-180s-CO | ||||
Mechanical life | times | 10000 | |||
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.
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