supply of insulation monitoring relay , insulation monitoring relay (imr) to monitor 3 phase power supply of voltage range 110 v ac, measuring range 1 - 100 k ohm, control voltage 24 - 240 v ac / dc output 1 c / 0 (spdt) contact system leakage capacitance 10 micro-farad, and place of inst allation s1a6, as per rdso spec. no. rdso/pe/spec/ac/0184-2015 (rev.1) & bom lr.no. - el/7.1.108/mssbc dt. -17/09/2021 suitable for lhb type ac coaches switch board cabinet (s1a06). acceptable makes as per bom: abb cat.no.cm.iws.1s, siemens cat no.3ug45 81-1aw31, schneider cat no.vigilohm/imd-im10, dold cat no. il 5880.12 & contrel cat no. ir 140y-4, r1-r22, bender,woka only acce ptable as per above rdso spec. [ warranty period: 30 months after the date of delivery ] ]