Underground Line
Pad Mounted Switch (Solid with D,S)
Features
Solid PAD mount switchgear is used for branching and separating by underground distribution line.
It is a product with integrated structure of main body main circuit part and grounding part by epoxy insulation.
The risk of explosion due to the existing SF6 gas application method is completely eliminated. It does not require maintenance due to gas leakage or replenishment, and because of its excellent insulation performance, it can be applied to general areas as well as dirt areas.
Problem was solved completely by applying disconnecting method to the main circuit part.
- Proven design rated for 5,000 full load operations
- Stainless steel construction for durability in any environment
- Minimal maintenance required for the high voltage unit
Ratings
| Item | 4way auto | 4way manual | 3way auto | 3way manual |
|---|---|---|---|---|
| Rated system voltage(kV) | 25.8 | |||
| Rated continuous current | 600 | |||
| Power frequency withstand voltage(kV) | 60 | |||
| Lighting impulse withstand voltage (1.2×50μs)(kV) | ||||
| Main circuit part | 125 | |||
| Disconnector part | 165 | |||
| Earth part | 150 | |||
| Rated power frequency(㎐) | 60 | |||
| Short-circuit breaking current(kA) | 12.5 | |||
| Short-circuit making current(kA) | 32.5 | |||
| Rated short-time withstand current(kA/1s, rms) | 12.5 | |||
| Insulating medium | Epoxy | |||
| Ambient temperature(℃) | -30 to 40 | |||
| Altitude(m) | ≤ 1 000 | |||
| Mechanical endurance(times) | 5,000 times | |||
| Rated control voltage | AC 220 V/ DC 24V | – | AC 220 V/ DC 24V | – |
| Operating method | Auto | Manual | Auto | Manual |
| Applied standard | KEPCO spec. | |||