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Structure and performance
The isolating switch on GND5-12 has a novel structure. It is a new isolating switch with independent intellectual property rights developed by the company. The static contact is installed on the insulator on the top of the cabinet, and the horizontal busbar is directly connected to the static contact through the installation box. The moving contact is installed on the incoming line end of the circuit breaker, and the moving contact is directly driven by the drive spindle to rotate to realize opening and closing. It has a very small installation space and obvious fracture. With the solid-sealed circuit breaker, it can realize upper isolation and lower grounding. The building-mounted high-voltage cabinet has a design or height of 1.5m. Driven by a BET-type mechanism through a crank arm.
Technical Parameters
| Model Specifications | GND5-12/630 | GND5-12/1250 | |
| Rated voltage (kV) | 12 | ||
| Rated current (A) | 630 | 1250 | |
| 4s short-time withstand current (kA) | 20 | 31.5 | |
| Rated peak withstand current (kA) | 50 | 80 | |
| Rated insulation level | Lightning impulse voltage (kV) | Phase-to-phase, relative to ground 75, fracture 85 | |
| 1min power frequency withstand voltage (kV) | Phase, relative to 42, fracture 48 | ||
Installation Dimensions
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