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UCM-03 Under Current Protection Relay (2A - 100A)
UCM-03 Under Current Monitoring Device protects devices such as motors, air conditioners, compressors and resistances for under current conditions. If the measured current of a motor or a system greater than adjusted undercurrent value, "relay indicator" turns on and the relay contact would be short circuit. When the measured current falls below adjusted undercurrent value, relay indicator turns off and relay contact would be released at the end of the delay time.
Under current Adjustment : Under current value could be set between 0,5 and 5A. It is the desired under current value for protection of a motor or a system. The hysteresis value is %3
Start Delay Time Adjustment T(s) : Start delay time could be set between 1 and 6 seconds. After the motors start to run, they draw high current within a short time. However current could drop suddenly. To avoid the operation failure during this time, the device would not energize the relay. After start delay time the current would be measured.
Delay Time Adjustment T(d) : Delay time could be set between 0,5 and 3 seconds.When the measured current falls below undercurrent value, relay contact would be open circuit after delay time and motor would be deenergized. If the measured current value exceeds the limit during this time, delay time would be reset.
ON (Power) : Turns on, if the device is powered.
OUT (Relay) : Turns on, if the relay contact is short circuit.
I>Iset : When the measured current falls below adjusted undercurrent value, LED flashes during delay time(Td). At the end of the delay time it turns on continuosly.