KBZ - 500630.

Product name: Mine flameproof vacuum feeder switch
Product model :KBZ-500, 630
Product introduction 用途：
The feed switch is used for underground coal mine AC 50HZ，The rated voltage is 1140V or 660V，Rated current up to 500A or 630A neutral point，In a three-phase power supply system without direct grounding，As a low voltage feed switch in a mobile substation or as a distribution main switch alone，It can also be used for infrequent start control of high-power motor。It can realize electric closing, electric opening, manual mechanical opening, remote opening and other operations。
Protection function:
The feed switch uses BZK-630 intelligent integrated protector to realize a number of protection functions such as undervoltage, overload, phase break, short circuit, leakage and leakage blocking, wind power blocking or gas blocking。
The feature of the protector is that it uses Chinese character LCD display and menu-type man-machine interface to display real-time system voltage, three-phase current, insulation resistance value, switching state, line fault and other information。The protection function parameters can be adjusted through menu selection。Wide application range, high precision, accurate action。With the memory function, the protection function parameters, the fault nature can be stored in memory。