About Vigilant

Transfer switches are an essential part of a standby power system. The utility (normal power source) is backed up by a generator (emergency power source). Should the utility fail, the transfer switch automatically switches the electrical load from the utility to the generator. When utility power returns, the transfer switch automatically switches the electrical load back to the utility. Automatic transfer switches, capable of automatic operation without operator intervention, perform the basic function of transferring the load to the available power source. A controller monitors each source for allowable voltage and frequency range. The transfer switch performs the following functions:

• Senses the interruption of utility power
• Sends a start signal to the generators
• Senses generator power is available
• Transfers the load to the generator
• Senses the return of utility power
• Retransfers the load to the utility
• Sends a stop signal to the generators

User Interface

DynaGen’s easy-to-use, 7-day exerciser clock gives you full control over day and time. The exerciser clock and indicator lamps are both accessible from outside the transfer switch. There’s no need to open the door to adjust the clock or view the status of the transfer switch, even with the NEMA 3 enclosure option.

VTSC100 Control Board

The VTSC100 Logic Controller Board is at the heart of every Vigilant Automatic Transfer Switch. It is designed to provide all basic transfer switch control functions with simplicity, flexibility, and durability.

Features include:

• Powered from genset battery for isolation against line transients.
• Integrated voltage and frequency sensing.
• Adjustable transfer delays using on-board potentiometers.
• Fused remote start contact relays.
• Adjustable drop-out & pick-up values for voltage and frequency.
• Internal test switch included.

Galvanized Corrosion Protection Standard on all Vigilant Enclosures

The Vigilant enclosure is made from duplex coated, galvanized G90 grade steel and meets American Society for Testing and Materials (ASTM) standard A653. The service life of our galvanized steel enclosures is more than twice that of regular steel.