Development of Heating Device for Drawer Type Circuit Breaker

摘要

High voltage circuit breaker is the most important control and protection equipment in power system. Northern winter weather is cold, and the breaker mechanism box relies on the heating device to raise the temperature, thus ensure the normal operation of the circuit breaker. Now the heating plate of the 100W aluminum alloy is adopted, it is easy to damage, therefore, how to improve the electric heating plate has become an urgent problem to be solved. Under the premise of the original appearance, the internal heat radiating element is changed into a drawer type electrothermal film module of silicon rubber. The outer package of the module is provided with a concave aluminum envelope, its bottom is equipped with a pilot lamp for working status indicator, this module can be used as long as it is inserted into the groove of the original heating plate, the service life is long, and the replacement is convenient.