Phase 4 – Wire L.T. Solid State ( Static) Whole Current ... - WBSEDCL

Sl. No. Particular Min. Requirement As offeredmeter body will not be possiblewithout breaking / tampering /removing the said seals. Suitablearrangement should be made forfitting/fixing of utility seal at two sidesof meter terminal cover in such amanner that any access to theterminal cannot be possible withoutremoving the seals. There should alsobe provision for sealing at the opticalport.The meter cover shall be permanentlyfixed to the base by ultrasonic weldingor any other technology which isequally or more efficacious so thatcover cannot be opened withoutbreaking, i.e. the meter should bebreak to open type.Meter should have an indication inits display if top cover is removed.19. Type of hinged undetectable Terminal cover shall be hinged.terminal cover20. Performance of meter intamper conditions(i) Input and out put TerminalsinterchangedShould work within specifiedaccuracy(ii) Change of phase sequence----do----(iii)Phase current reverse-do-(iv) Indication of above tamperLCD / LED indication.condition21. Suitability of meter to sustainShould sustainover voltage i.e. phase tophase voltage injectedbetween phased & neutral22 Electromagnetic compatibilityAs per IS 13779: 1999(EMI / EMC severity level)23. (i) Effect on accuracy ofexternal electromagneticinterference of electricaldischarge, external magneticfield(ii) Current reversal, Neutraldisturbance & Magnetic tamperlogging in memory24. Effect on accuracy undertamper conditions / influenceconditionsShould work within accuracy as perlatest ISS & CBIP report -88 withlatest amendment.Meter shall log last 150 events withdate and timeShould work within accuracyspecified in IS: 13779 / 1999, andCBIP tech. Report 88. Error beyond+/- 4 % will not be acceptable forconditions not specified in IS: 13779 /1999 & CBIP tech. Report 88.No Drift in accuracy in measurementwith time25. Drift in accuracy ofmeasurement with time26. Name plate details It should cover all the details asprescribed in Clause-10 of tech.spec.27. Approximate weight of meter To be indicated23