We had one of those unusual applications through last week. A customer had a load of 1000W that he needed to run for an hour. Simples – using our UPS calculator we can get one of our rack/tower VFI3000B units with 2 battery packs and problem solved. Or not. Problem is there is a maximum […]

KEHUA TECH provides high-reliability power solutions for the largest 173 billion yuan (about 23 billion euros) global refining project. Providing a complete industrial grade high-reliability power protection solution for key loads of Zhejiang Petrochemical Industry co., ltd’s 40 million tons/year refining and chemical integration project. Including more than 200 sets (10-120kVA) of industrial grade UPSs […]

BS7671:2018 18th Edition Wiring Regulations now makes mandatory RCD protection on circuits up to 32A. Isolation transformers will negate the effectiveness of RCD protection. Is this a problem? Tony Bell explains.