SWR retrofit
The SWR12 is an OEM designed retrofit circuit breaker for both the South Wales Switchgear C & D range Oil Circuit Breaker and the HG12 Gas Circuit Breaker, to IEC 62271-100. BRUSH Switchgear is proud of its heritage in the C and D range of switchgear, which continue to work at the highest standards. Technological advances have allowed us to improve further and offer our customers a circuit breaker that boasts the award-winning magnetic actuator along with removing the need for SF6 gas. The SWR12 circuit breaker, offers a new lease of life for existing switchgear, with this effective retrofit solution. Employing magnetic actuator technology with vacuum interrupters, the SWR12 is designed for 10,000 operations and a life expectancy of 30 years. It is designed for retrofitting into existing switchboards without the need for panel modification.
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| SWR Retrofit Datasheet |
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- Superior, proven technology with minimal maintenance
- No civil works required and existing HV cabling remains undisturbed
- Improvement of Health & Safety by removal of Oil or SF6 gas
- Considerable life extension of the existing switchgear
- Lower owner costs through virtually no maintenance requirements and increased switchboard life expectancy
- Uses existing design of primary and automatic secondary contacts
- Improved panel interlocking to latest ENA requirements
- In addition to the retrofit of the circuit breaker, BRUSH Switchgear can offer a more complete system solution to enhance the control and automation of the distribution network
| Rated Voltage | kV | 12 |
| Normal Rated Currents | A | 400/630, 800, 1250 |
| Lightning Impulse Withstand Voltage | kVP | 75 |
| Short Duration Power Frequency Withstand Voltage | kV | 28 |
| Rated Frequency | Hz | 50 |
| Rated Short-Time Withstand Current | kA | 25 for 3 seconds |
| Rated Peak Withstand Current | kA Peak | 62.5 |
| Rated Duration of Short Circuit | Seconds | 3 |
| Making Current (peak) | kA | 62.5 |
| Symmetrical Breaking Current | kA | 25 |
| Rated Auxiliary Voltages | V dc | 30, 48/50, 110/125 |
| Minimum opening time/closing time | ms | 33/76 |
| Normal Operations | 10,000 | |
| Weight | Kg | 211 |
| Rated Operating Sequence | O-0.3s-CO-15s-Co | |
| Operating Mechanism Type Dependent power closing | (Magnetic actuator) |
Stored energy opening (Springs, charging for closing) |
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