tender for 3 phase voltage monitoring relay(lt mmr) 400/480 volt ac plus minus 5, 50hz as per part no.dpco1dm 48 . 400.480 of m/s carlo gavazzi cat no. cm mps 41 make m/sabb carlo gavazzi or equivalent conf. to rdso spec no. rdso/pe/spec/ac/0184-2015(rev0) suitable for switch board cabinet of lhb eog coaches .