Numerical Over Cureent Relay
SPECIFICATION
Numerical Over Cureent Relay
Microprocessor Based Non Directional Over Current Relay,Single Pole, Numerical relay. Selectable, Range 5percent to 250percent.Current Relay with IDMT/DMT. Selectable Curves Fiveselectable curve Normal Inverse 1 C1 , Normal Inverse 2, C2 Very Inverse C3 , Extremely Inverse C4 , Long Time Inverse C5 and Define Time C6 . Instantaneous Over Current Protection with adjustable timer. Breaker Failure detection. Inbuilt CB Trip Circuit Supervision function during pre closing andpost closing of CB. On site CT Secondary selection 1A or 5A.Wide range Power supply input 18V to 250V AC/ DC.Relay Should have following Features 16 x 2 LCD Backlit display for Parameter and setting display. Online display of CB status and other digital and logical status. Continuous monitoring of module’s internal hardware and alarm generation in case of failure of any critical components. 4 Digital Output contacts for local alarm as Trip. 2 dedicated status input for Trip Circuit Monitoring. 5 nos of Fault data stored with keypad interface and time stamping. Housed in MS Enclosure with important terminals brought out.
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