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KGPS—800中频感应加热机,因故逆变失败,烧毁6只NGTB3660V/400A快速熔断器。因无备件,一时找不到代用品,为了不影响生产,偿试修复了原件,经试用两月余,一次超温运行又烧毁了被修复的快速熔断器,并安全有效地保护了昂贵的晶闸管,实践证明应急维修简单可行。应急者不妨一试。 维修方法:将快速熔断器两端的螺钉拧开,取下端盖,倒出灭弧硅砂,将两端盖被烧焦的熔断片剪去,并在其端部留下10mm。取0.295mm的铜丝剪50mm长,每只30根(该铜丝熔断电流为12.2A/根,12.2×30=366A<400A。在其两头搪锡,均布可靠锡焊在端盖原熔片端上,焊毕整理均
KGPS-800 IF induction heating machine, for some reason inverter failure, burned six NGTB3660V / 400A fast fuse. In the absence of spare parts, could not find a substitute for a while, in order not to affect the production, try to repair the original, after more than two months trial, an over-temperature operation and burned the fast fuse has been repaired and safe and effective protection of the expensive Thyristor, the practice proved that emergency maintenance is simple and feasible. Emergency workers may wish to try. Maintenance methods: Quick fuse screws unscrewed at both ends, remove the cover, pour arc silicon sand, both ends of the scorched fuse cut off, leaving 10mm at the end. Take 0.295mm copper wire cut 50mm long, each 30 (the copper fuse current of 12.2A / root, 12.2 × 30 = 366A <400A in both ends of the tin, uniform and reliable soldered in the end cover of the original melting Piece end, finishing welding are finished