supply and installation of 400kva servo voltage stabilizer for season - 2025-26 , 400 kva 250-460/400 v,3 phase balanced / unbalanced type oil cooled rolling contact servo voltage stabilizer with first filling of oil as per is 335 voltage stabilizer. capacity : 400 kva input voltage : 250-460v(phase to phase) output voltage : 450volts to 430 volts ±1%(phase to phase) type : suitable for: balanced / unbalanced load and supply application : indoor type standard : is2026/77 phase : 3-ph,4wires frequency : 50hz waveform distortion : nil response time : instantaneous(mili sec) speed of correction : 8to10v/sec modeofoperation : automatic/manual/handcontrol suitability : suitable for al lpower factors duty cycle : continuous 24 hrs.at 100% load efficiency : more than 99% losses at no load : 0.12% of the total capacity losses at full load: 0.7% at full load cooling : onan (oil natural air natural) transformer oil : a grade tested & certified as per is335 operatingtemperature : 0°c- 45°c above ambient laminations used : imported low losses crgo laminations- m4 grade. carbon rollers used : imported high grade graphite rollers over load capacity : our rolling contact servo voltage stabilizer will be very much suitable to with stand 10% overloading for a period of 1-2 hours