Safering Series Switchgears
Our SCE-Safering series product is a kind of metal enclosed switchgear. All high voltage electric components and parts of our switch cabinet are completely sealed in a 3mm thick stainless steel enclosure. Such design makes sure the entire switch equipment will not be influenced by external environmental conditions and achieves high security and no-maintenance. Be choosing extensive buses, we can have switchgears in any combination and realize a modularization. The extensive bus is totally insulative and shielded, remarkably increasing the reliability and security. In addition, this switchgear can provide automatic solution, adopt an intelligent switch method and reduce the installing and adjusting work to the least.
Structure Features
1. Our switchgears are produced in strict compliance with GB national standards and IEC standards
2. This series electrical switchgears are equipped with SF6 gas insulated RMU, fully sealed and insulated busbar system and cable terminals
3. Maintenance-free, suitable for outdoor working conditions.
4. Reliable mechanical interlocking device
5. The stainless steel compartment has obtained a protection degree of IP67, matched with explosion-proof equipment, providing a strong guarantee for secure operation.
Parameters
| No. | Items | Unit | Data | ||||
| Load switchgear | Combined switchgear | ||||||
| 1 | Rated voltage | kV | 3.6, 7.2, 12 | ||||
| 2 | Rated frequency | Hz | 50 | ||||
| 3 | Rated current | A | 630 | 80 | |||
| 4 | Rated insulation level | Main circuit | 1min power frequency withstand voltage | Line voltage, phase voltage | kV | 42 | |
| Valid value | Voltage in isolation switch | 48 | |||||
| Lightning impulse withstand voltage | Line voltage, phase voltage | 75 | |||||
| Peak value | Voltage in isolation switch | 85 | |||||
| 1min power frequency withstand voltage of auxiliary circuit | Voltage to ground | 2 | |||||
| 5 | Rated short-time withstand current | Main circuit | kA | 20 | |||
| Grounding circuit | 17.4 | ||||||
| 6 | Rated duration of short circuit | Main circuit | S | 3 | |||
| Grounding circuit | 2 | ||||||
| 7 | Rated peak withstand current | Main busbar | kA | 50 | |||
| Grounding circuit | 43.5 | ||||||
| 8 | Rated active load breaking current | A | 630 | ||||
| 9 | Distribution line loop breaking current | 630 | |||||
| 10 | Rated cable-charging breaking current | 10 | |||||
| 11 | Rated short-circuit breaking current | kA | 31.5 (expected value) | ||||
| 12 | Rated short-circuit peak making current | 50 | |||||
| 13 | Rated transferring current | 1500 | |||||
| 14 | Circuit resistance | ≤150 | ≤200 | ||||
| 15 | Lifespan | Times | 5000 | ||||
| 16 | Pressure of SF6 compartment(20 ℃, gauge pressure) | MPa | 0.03 | ||||
| 17 | Leakage rate of SF6 | /year | ≤0.1% | ||||
All products produced by South China Electric have passed the routine test, type test and special test conducted by national labs. They also comply with national standards and client’s requirement. We will pick out those defective goods before delivery.
