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Thursday, 23 April 2015

Motor burn out and under voltage protection

This is AC motor burn out protection causes of under voltage input. The principle is simple, it will check for voltage at all times. Normal voltage is 220V AC. If the voltage falls below a preset. Relay will not work and the LED is a warning. Can be set to cut no-off in the voltage during the 168-227V.
As AC main in normal level, the relay will be connect to apply AC line to motor. And AC-line fall down lower than 10% of normal voltage the relay will cut of load at once. Until the voltage is restored to its original condition. So to get back into the circuit again. Ideally, blog diagram in Figure 1.