KBZ2-400,500,630/1140(660)Z Mining Explosion proof Vacuum Feed Switch (Intelligent Type)Detailed product description：

KBZ2-400, 500, 630/1140 (660) Z Mining Explosion proof Vacuum Feed Switch (Intelligent Type) Model and Its Meaning



Scope and Application

KBZ2- □/1140 (660) Z mining isolated vacuum feeder switch (hereinafter referred to as feeder switch) is suitable for use as a distribution main switch or branch switch in three-phase power grids with AC 50Hz, 660V, 1140V current up to 630A in environments containing explosive gases (methane mixtures) underground and other surrounding media.  
The protector in the feed switch adopts advanced microprocessors, high-precision data processing, and advanced protection algorithms, which have the advantages of high protection accuracy and fast response speed. The protector can achieve various protection functions such as leakage protection (used as a main switch), power directional selective leakage protection (used as a sub switch), leakage lockout, overload, short circuit, three-phase imbalance and undervoltage. The feed switch can be connected to a remote shunt button, as well as an external methane circuit breaker or other contact points that require joint control, to achieve methane over limit power-off or other protection functions.  

KBZ2-400, 500, 630/1140 (660) Z Mine Explosion proof Vacuum Feed Switch (Intelligent Type) Main Features

1. The protector has functions such as leakage lockout, leakage protection, short circuit protection, power direction type, selective leakage protection, overload protection, undervoltage protection, phase failure and imbalance protection, parameter correction, fault memory, full Chinese LCD display, and testing;  
2. This protection uses time slice technology to allocate a certain amount of time slice to the LCD display, so that the protector can work normally even in the case of LCD dead screen, thus freeing the protector from the relatively weak anti-interference ability of LCD.  

Main technical parameters:

Product model KBZ-400 KBZ-500 KBZ-630

Rated working voltage (V) 660, 1140

Rated heating current (A) one hundred five hundred six hundred and thirty

Ultimate breaking ability (KA) ten twelve point five twelve point five

Short circuit protection action Time (S) <0.1

When starting the motor directly Electric lifespan of 10000 times zero point two

mechanical life ten thousand times one

Maximum outer diameter of cable introduced (mm) main circuit sixty-three seventy-eight seventy-eight control loop nineteen