The 50kva power transformer uses the oil-immersed load switch, it has the load opening & closing operation, provides the serial connection of backup-protection fused and plug – in fuse –range protection , it is very simple in principle, economical and reliable . its backup-protection fuse is the high-current limiting fuse, with the large breaking capacity, and plug-in fuse has the built-in double-sensitivity fuse, providing the current and temperature dual protection.
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