supply of insulation monitoring relay, , insulation monitoring relay 110 volts a.c, insulation measuring range 1-10 0 kilo ohm, control supply 24-240 volts ac/dc output 1c/o (spdt) contact system leakag e capacitance 10 micro farad. make:- contrel make- ir 140-4, ri-r22, abb make-cm-iws.1s, s chneider make- vigil ohm/imd-im10, siemens make- 3ug4581-1aw31 or dold make or woka m ake or bender make only confirming to rdso letter no: el/7.1.108/mssbc dt:17-09-2021 [ warranty period: 30 months after the date of delivery ] ] , insulation monitoring relay, 415v ac, 3phase, neutral isolated, voltage range 0-500v a c,insulation measuring range : 10 k ohm to 150 k ohm, control voltage : 24-240v ac/dc, and place o f installation s1a7, 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 (s1a07).acceptabl e makes as per bom: abb cat.no.cm.iws.2s, schneider cat no.vigil ohm/imd-im10, siemens cat .3u g4581-1aw31, dold cat no. il 5880.12, contrel cat no. ir 470ly-21a, ri-r138, woka or bender only acceptable as per above spec. [ warranty period: 30 months after the date of delivery ] ]