supply of insulation monitoring relay, 415v ac.insulation monitoring relay, 415v ac., insulation monitoring relay, 415v ac, 3 phase, neutral isolated, voltage r ange 0- 500 v ac, insulation measuring range-10 k ohm to 150 k ohm, control voltage: 24-240 v ac / dc, place of installation s1a7, of bill of material of rdso spec. no. rdso / p e / spec / ac / 0184- 2015 ( rev.1 ) , used for insulation control 415 v of lhb type ac coaches, confirming to rdso spec. no.rdso / pe / spec / ac-0184-2015 ( rev.1 ) , suitable for lhb type a c coaches switch board cabinet ( s1a07 ) or latest. [ warranty period: 30 months after the date of deli very ]