Line systems and distribution transformer fuse does not work properly

In reality, the 10kV line and distribution system can not correctly fuse on the transformer action, one of the reasons is that the poor quality electrician, strong sense of responsibility, not for drop-out fuse perennial mcb circuit breaker and overhaul; electric meter is that , drop-out fuse products of poor quality, can not pull the flexible, co-operation. Two reasons for reducing the drop-out fuse functions. In Circuit breaker missing fuse tube, lack melt or copper wire, aluminum wire hooked instead of melt even the case. Makes the trip circuit failure rate and high rate of distribution transformers.