1756-IF16 explosion-proof vacuum feeder switch (hereinafter referred to as feeder switch) is mainly used in underground coal mines, in the line of AC 50Hz, voltage up to 1140V, rated current 400A, 500A, 630A, 800A respectively, as the general switch of the power supply system, branch switch, or as the feeder switch of the explosion-proof mobile substation for mining (open the rear cover plate and connect with the mobile substation), also can be used as the infrequent starting of large-capacity motors. It can also be used for infrequent starting of large-capacity motor. It has the functions of overload, short-circuit, under-voltage, leakage protection (selective leakage protection) and leakage blocking. The product can be applied in mine explosion-proof vacuum feeder switch and other coal mine safety electricity monitoring system.

1756-IF16 control system hardware configuration

Display: A 4-line Chinese character text display with protection level of IP65.

Programmable controller: one CPU224Q UN 214-1AF23-0XB0 of UN200 series.

Expansion module: Three-phase AC power and leakage monitoring module UN 231-0BH22-0XA0

(Note: KBZ800Z requires two three-phase AC and leakage monitoring modules.)

The 1756-IF16 consists of a control system composed of a set of UniMAT PLC + text screen and an actuating system composed of vacuum circuit breakers. As shown in the figure. Among them, the CPU carries out some logic control, and the mining module mainly collects signals of AC voltage, current and leakage resistance, so as to realise the system monitoring and supervision and complete the protection functions of leakage blocking, overload, short-circuit, phase failure, under-voltage and over-voltage, etc., which has the advantages of high degree of intelligence, stable performance and reliable action.