Hi-Rel Electronics Limited manufactures and supplies 25KVA Under Slung Inverter. Hi-Rel Electronics Limited is an ISO-9001:2000 certified company. 25KVA Under Slung converts input power 90-140VDC from batteries to 415VAC, 3phase, 50Hz power which operates compressor and fan motors of roof mounted AC package unit [RMPU], in air conditioned coaches in Railways. 25KVA Under Slung Inverters are mounted below the tier. It has IP-65 enclosure to protect against water, dusts and mud.
