Unexpected power outages can disrupt regular routines and put electrical infrastructure under strain. In such cases, a dependable and automatic technique of switching between the main power source and a generator is critical. Selfguard Auto Changeover Switch are designed to handle this transition safely and automatically, allowing facilities to stay functioning during unexpected power outages.
Understanding Automatic Changeover Switches
An Automatic Changeover Switch is fitted between the main power source and the generator. Its principal role is to automatically switch the electrical load from the mains to the generator when the mains supply fails. When the mains power is restored, the switch immediately transfers the load back to the mains without delay, and the generator is set to no-load mode.
This automatic function eliminates the need for manual switching, resulting in a smooth and controlled power transition.
Selfguard offers two types of automatic changeover switches:
- Single-Phase Automatic Changeover Switch (CSNF)
- Three-Phase Automatic Changeover Switch (CTF)
Safety Benefits During Power Outages
Automatic Operation Reduces Human Risk
During a power outage, manually activating switches might expose consumers to electrical dangers. Selfguard's automated changeover switches reduce the need for user intervention by automatically detecting a power outage and switching to generator supply. This ensures safe power handling during outages.
Instant Switching Maintains Electrical Stability
When the mains power fails, the switch switches the load to the generator automatically. When power returns, the switch immediately reconnects the load to the mains supply. This controlled switching contributes to consistent power flow throughout the building's electrical system.
No-Load Condition Protects the Generator
Once the mains supply is restored, the generator is switched to no-load mode. This function protects the generator from excessive load stress and provides smooth operation during several power transitions.
Single-Phase Automatic Changeover Switch (CSNF)
The CSNF Single-Phase Automatic Changeover Switch is intended for use in systems where both the mains and generator supplies are single phase.
Key Characteristics
- Automatic changeover from single-phase mains to single-phase generator
- No delay in transmitting load back to the mains.
- Following the restoration of the mains, the generator goes to no-load mode.
- Available current ratings include 40A, 63A, 100A, 150A, and 200A.
This makes it suitable for buildings that operate on single-phase electrical systems and require automatic backup power handling.
Three-Phase Automatic Changeover Switch (CTF)
The CTF Three-Phase Automatic Changeover Switch is designed for installations where the mains supply is three-phase but the load is primarily single-phase.
Key Characteristics
- Automatic changeover from three-phase mains to generator supply
- Designed to power single-phase loads like lights and appliances.
- Available current ratings are 63A, 100A, 150A, and 200A.
This switch provides dependable power transfer in buildings with three-phase mains infrastructure.
Conclusion
Selfguard Automatic Changeover Switches help to ensure safety during abrupt power outages by automating the transfer of electrical load between the mains and generator supplies. These switches, which include automatic operation, quick transfer back to mains, and generator no-load safety, offer a trustworthy alternative for dealing with power outages.
Buildings that use the Single-Phase CSNF or Three-Phase CTF models might benefit from safer, smoother, and more dependable power transitions during unexpected outages.