The bench is mainly to be utilized for the production testing of bimetal overload relays used to break current using an overload current operated bimetal device, typically for motors and pumps. The circuit employs a typically designed servo controlled current source which pumps the required current at a convenient low voltage.
Easy to use low cost bench
Servo controlled current source for line and load regulation (1%)
Timer to measure the trip time per station.
User defined (as well as IEC specified) current can be set.
Customized fixture
Works well even for an unskilled operator
Output Current : 2-50 ADC
Input Supply : AC 230V +/-10%, 50 Hz
CT Taps: Discretely spread across throughout the range
The bench can be customized for the maximum testing current range and the number of stations. It can be made PC based with data logging if necessary.
The test bench is designed to test bimetallic overload relays for their thermal overload characteristics
