In recent years, since the load-break switch/fuse general integrated switchgear is simple in structure, convenient for maintenance, low in cost and reliable in operation compared with circuit breaker, so it is selected and widely employed for the selection of protection and control switch for 10 kV power transformer.

Introduces the load-break switch monitor system of OCS in Liupanshui railway conjunction, offers methods and precautions for its installation and commissioning.

Discussion about the choice of 10kV breaker and load switch in distribution system;

Analysis of transfer current when breaking circuit by high-voltage current-limiting fuse and box-load switch;

There are 3 kinds of breakers at the generator outlet, including the load switch to cut off the load current, circuit breaker with limited breaking capacity and circuit breaker with full breaking capacity.

In this paper, the fault mechanism of the test duty 6a and 6b in accordance with GB3804-2004 is analyzed and the operating condition of the switch during opening period is presented.

Technical discussions on the functions and the selection of switch-fuse combination used in 10 kV distribution units are given.

Technical discussions on the function and the selection of switch-fuse combination used in 12 kV ring main units are given in the paper.

Vacuum chamber design of leakage detection/recovery system for SF6 switch cabinet;