AC Switchgear (Indoor)
SWR Retrofit
This effective retrofit solution provides a new lease of life to existing switchgear. Employing magnetic actuator technology with vacuum interrupters, the SWR12 is designed for 10,000 operations and a life expectancy of 30 years.
Overview
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 is an effective retrofit solution – offering a new lease of life for existing switchgear. Utilising 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.
Key benefits
Resources
ENGINEERING FOCUS
Upgrading obsolete designs to modern standards
Retrofit solutions for:
1: D4X circuit breaker (designed in 1970)
2: Hawkgas12 circuit breaker
SF6 filled switchgear with vertical isolation (designed in 1990)
Ratings
| Property | Rating |
|---|---|
| Rated Voltage | 12 kV |
| Normal Rated Currents | 400/630A, 800A, 1250A |
| Lightning Impulse Withstand Voltage | 75kVP |
| Short Duration Power Frequency Withstand Voltage | 28kV |
| Rated Frequency | 50Hz |
| Rated Short-Time Withstand Current | 25kA for 3 seconds |
| Rated Peak Withstand Current | 62.5kA Peak |
| Rated Duration of Short Circuit | 3 seconds |
| Making Current (peak) | 62.5kA |
| Symmetrical Breaking Current | 25kA |
| Rated Auxiliary Voltages | 30, 48/50, 110/125V dc |
| Minimum opening time/closing time | 33/76ms |
| Normal Operations | 10,000 |
| Weight | 211Kg |
| Rated Operating Sequence | O-0.3s-CO-15s-Co |
| Operating Mechanism Type Dependent power closing | Stored energy opening (Springs, charging for closing) (Magnetic actuator) |
Applications
Switchgear services
From initial system analysis, to design, engineering, supply, installation, commissioning and upgrades of equipment through to repurposing or decommissioning. We provide lifecycle management and support.