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Sl. No.
Item Description
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The numerical relay should have protection for 3 OC+1 EF having following technical Parameters.Note:-The material should be of PVVNL approved vendor)
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(i) Current rating: 1A/5A Site Selectable.(ii) Aux Supply: 180-240V AC +24V DC Rated (As per IEC) with Communicable Port.(iii) Draw Out with CT Shorting.(iv) Front LEDs Display for following:- L1, L2, L3, E, Trip for Faulty Phase/Earth, Low Set Trip, High Set Trip.(v) Relay should have minimum 4 DI, 6 DO.(vii) The relay should have Cold Load pick up, Harmonic Blocking and CBFP. It should have minimum 10 Fault records and 10 Events records.alp>5 to 400% in step of 1%.blp>5 to 3000% in step of 1%.cle>5 to 250% in step of 1%.dle>5 to 1500% in step of 1%.eTe>0.02 Sec to 20 sec in step of 0.01 Sec.f Ti>0.02 Sec to 20 sec in step of 0.01 Sec.Note:-Breaker Failure Detectiion.Communication Ports: RS485/RS232.Communication Protocols: MODBUS-RTU&IEC 60870-5-103.Programming through local keypad.Selectable definite Time or IDMT curves as per IEC standards.Rated input current selectable 1A or 5A.Password protection to guard against unauthorized access & editing of setting.Storage of latest 10 fault records with time stamping.Mounting/Case:Draw-out/Non Draw-out.Trip Circuit Supervision through digital input.
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