Product Profile of Numerical 4 Elements Protection Relay

Numerical 4 Elements Protection Relay is provided with in-built CB Trip Circuit Supervision function during pre closing and post closing of CB. The 4 Elements Protection Relay enables On-site CT Secondary selection of 1A or 5A. Numerical 4 Elements Protection Relay is manufactured by Ashida Eletronics Pvt. Ltd., an ISO 9001:2008 recognised company.

Ashida Eletronics Pvt. Ltd. Also manufactures a wide range of electrical power protection relays, auxiliary protection relay and SCADA systems. The Numerical 4 Elements Protection Relay provides Online display of CB status and other digital and logical status.

Salient features of the Numerical 4 Elements Protection Relay:

• 4 Element [3 Phase + EF] Non Directional Over current IDMT/DMT.

• Selection of Curve: Five selectable curve [Normal Inverse1, Normal Inverse, Very inverse, Extremely inverse, Long time inverse and Define Time

• Instantaneous Over-Current Protection with adjustable timer.

• Breaker Failure detection

• In-built CB Trip Circuit Supervision function during pre closing and post closing of CB.

• On site CT Secondary selection 1A or 5A.

• Internal calculation of zero seq. Current for Earth fault

• Wide range Power supply input 18V to 250V AC/DC

• Cold Load Pickup

• RS 485 communication port [at rear side] for remote SCADA.

• IEC60870-5-103 Protocol for communication

• 16 X2 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.