电动机高压熔断器选型及分析

Selection and Analysis of Motor High Voltage Fuse

高压熔断器作为发电厂保护的最常用装置,在高压熔断器与高压真空接触器组合保护中发挥了重要作用。发电厂的空压机高压电动机可通过由高压熔断器与高压真空接触器组合而成的高压开关柜(F-C柜)实现直接启动。当接触器用于控制和保护电动机时,一旦电动机出现故障,熔断器就需在很短的时间内迅速切断故障,因此针对电动机保护选用合适的熔断器十分重要。

As the most commonly used device for power plant protection,high-voltage fuse plays an important role in the combined protection of high-voltage fuse and high-voltage vacuum contactor.The high-voltage motor of the air compressor in the power plant can be directly started through the high-voltage switch cabinet(F-C cabinet) composed of high-voltage fuse and high-voltage vacuum contactor.When the contactor is used to control and protect the motor,once the motor fails,the fuse needs to cut off the fault quickly in a very short time.Therefore,it is very important to select appropriate fuses for motor protection.