Numerical Draw-out 3 Over Current

Relay has modbus protocol with RS 485 port with baud rate 9600bps. Another
model is established for special applications with baud rate115kbps.Relay records 99 faults
with date and time. Relay rating (In) is field selectable- either 1A/5A.The output relays are
configurable Configurable options for enabling & disabling of high-set in both Phase &
earth.

PNA TYPE IDMT/DEFINITE TIME/INSTANTANEOUS LOW-SET/HIGH-SET DIRECTIONAL
NUMERICAL/MICROPROCESSOR BASED OVER CURRENT RELAY (OCT) WITH EARTH FAULT RELAY
(EFR) receives the input current signals (phase current and neutral current) via four input
current transformers. These signals are galvanically de-coupled, suitably filtered and fed to
the micro-controller, for amplitude calculation and further logical processing.

• Poly carbonate front cover with external reset switch
• High Drop-off/Pick-up ratio
• Consistent repeat accuracy
• Unique combination o f 50/51/50N/51N in a single gadget
• Non-Volatile memory for data retention and retrieval in the event of power failure
• Reliable auxiliary supply of wide range input of 18-85 or 85-275 volts AC or DC
• Low AC burden
• Definite time curve for both Phase & Earth along with optional user defined curve.