Editorial Reviews:
Synopsis
3-PH 200 AMP Designed for emergency and standby applications, this Generator ASCO Series 300 Automatic Transfer Switch has its contacts readily accessible for easy inspection and preventive maintenance. It has true double-throw, inherently interlocked construction and is mechanically held and electrically operated. This automatic transfer switch is 3-PH and 200 AMP. Features: -Close differential voltage sensing on all phases of normal source -Voltage sensing of emergency source, pickup adjustable from 85pct to 100pct of nominal -3 Second time delay to override momentary normal source outage to delay all transfer switch and engine-starting signals -Retransfer to normal time delay, adjustable from 0 to 30 minutes -5 Minute unloaded running time delay for emergency engine generator cool down -Transfer to emergency time delay, adjustable from 0 to 8 minutes for controlled timing of load transfer to emergency -Switch position indicating signal lights -Solid neutral plate -Excercise timer with 3 selector switch for; with load, without load, and off -Test switch to momentarily simulate normal source failure -Switch position indicating contacts rated 10 amps 480 volt AC -Gold plated engine start contacts
