supply of supply & testing of single phase preventer as per specification.supply & testing of single phase preventer as per specification.,supply & testing of single phase preventer as per specification :- supply voltage 415 vac +_ 20% , 50 hz +_ 3 % ,out put relay contact -1 no , out put contact rating 5 amp. , 240 vac (resistive ), unbal ance trip setting 40 v+_ 6 v ,trip time delay for - for unbalance 3.5 sec. +_1.5 sec. , resetting - auto reset , enclosure - hip moulded , with nylon connector strip , mounting - panel mounting , operating conditions - t emperature - 5 c to 60 c , humidity : up to 95 % rh , model :- vsp2 make:- seimens, l&t, minilec or equ ivalent note: authorization certificate & oem/challan/innvoice with one year warranty on paper at the ti me of delivery [ warranty period: 12 months after the date of delivery ] ]