supply of insulation monitoring relay rated 415 volts, 3 phase neutral isolated voltage - range 0 to 500 volts ac, insulation measuring range 0 to 500 volt ac, insulation measuring range 10 kilo ohm to 150 kilo ohm, control supply 230 volts 10%, 50 hz having fault memory test reset button and alarm lead as per rdso specification no rdso/pe/spec/0192 - 2018 (rev-1). make: m/s bender- ir 470ly-21a or equivalent in m/s abb or m/s contrel or m/s woka or m/s-schneider or m/s-siemens or m/s-dold or m/s-lauritz knudsen (formerly l&t) only.insulation monitoring relay rated 415 volts, 3 phase neutral isolated voltage - range 0 to 500 volts ac, insulation measuring range 0 to 500 volt ac, insulation measuring range 10 kilo ohm to 150 kilo ohm, control supply 230 volts 10%, 50 hz having fault memory test reset button and alarm lead as per rdso specification no rdso/pe/spec/0192 - 2018 (rev-1). make: m/s bender- ir 470ly-21a or equivalent in m/s abb or m/s contrel or m/s woka or m/s-schneider or m/s-siemens or m/s-dold or m/s-lauritz knudsen (formerly l&t) only.,iinsulation monitoring relay rated 415 volts, 3 phase neutral isolated voltage - range 0 to 500 vo lts ac, insulation measuring range 0 to 500 volt ac, insulation measuring range 10 kilo ohm to 150 kilo ohm, c ontrol supply 230 volts 10%, 50 hz having fault memory test reset button and alarm lead as per rdso specificat ion no rdso/pe/spec/0192 - 2018 (rev-1). make: m/s bender- ir 470ly-21a or equivalent in m/s abb or m/s contrel or m/s woka or m/s-schneider or m/s-siemens or m/s-dold or m/s-lauritz knudsen (formerly l&t) only. [ warranty period: 30 months after the date of delivery ] ]