Technical Power & Maintenance Ltd

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Master Switch Three-phase

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MASTER SWITCH is a static transfer switch commonly used within power continuity applications to improve resilience. The system can be used in conjunction with UPS or as separate standalone devices.


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MASTER SWITCH is a static transfer switch commonly used within power continuity applications to improve resilience. The system can be used in conjunction with UPS or as separate standalone devices.

OPERATING PRINCIPLE
MASTER SWITCH adds a source of redundancy to a critical installation and automatically transfers the connected load between two separate AC power sources. The transfer can be automatic when an input power supply fails outside set tolerances or be manually forced using the front panel keypad or remotely via a communications network.

PROTECTION AGAINST POWER FAILURES
In the event that one of the two power sources does not return to the accepted tolerance values, the MASTER SWITCH will transfer the other loads over to the second power source (this happens instantly if the two sources are in phase).

PROTECTION AGAINST ENVIRONMENTAL DISTURBANCES
Overloads and load faults

In the event of an overload or fault condition, the internal protection system within the STS device can be configured to disconnect power at defined levels. In the extreme situation of a downstream short circuit MASTER SWITCH can disconnect the load to prevent disruption.

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