Overview
XGN66-12 fixed-type AC metal-enclosed switchgear (hereinafter referred to as switchgear) is suitable for 3.6~ 12kV. As a device for receiving and distributing electrical
energy in a two-phase AC 50Hz system, it is suitable for places with frequent technical operation and oil switches The bus system is a single bus system and a single bus seg-mented system.
The main switch adopts ZN28-12 series vacuum circuit breaker, equipped
with CD17 series electromagnetic operating mechanism or CT19 series spring op-erating mechanism, and the disconnector adopts GN30-12 rotary or GN22-12 high
current disconnector.
Operating Conditions
1. Ambient temperature: upper limit + 40℃, lower limit ‒15℃;
2. Altitude: ≤1000m;
3. Relative humidity: daily average 95%, monthly average 90%;
4. Seismic resistance: 8 magnitude;
5. No fire, explosion, serious pollution, chemical corrosion and severe vi-bration.
Model and meaning
Technical Specification
| Item | Unit | Parameters |
| Rated Voltage | kV | 3.6, 7.2, 12 |
| Rated Current | A | 630 – 1250 |
| Maximum Working Current | kA | 20, 25, 31.5 |
| Rated Breaking Current | 50, 63, 80 | |
| Rated Thermal Stability Current | 20, 25, 31.5 | |
| Rated Dynamic Stable Current | 50, 63, 80 | |
| 1min Power Frequency Withstand Voltage | kV | 42 |
| Lightning Impulse Withstand Voltage | 75 | |
| Auxiliary Circuit 1min Power Frequency Withstand Voltage | 2 | |
| Protection Class | IP3X | |
| Dimensions (width × depth × height) | mm | 950 × 950 × 2300 |
External Dimensions
