Mining Explosion-proof Vacuum Feeder Switch

Mining Explosion-proof Vacuum Feeder Switch is for mine use.

Mining Explosion-proof Vacuum Feeder Switch

Use

KBZ-200/1140II, KBZ-400/1140(660)II mining explosion-proof vacuum feeder switch is used in coal mines containing explosive gas(methane) and coal dust  for three-phase isolated neutral power supply system with AC 50Hz, rated voltage 1140V, and  rated current to 400A(200A). It can be used as master switch or sub-switch in the first or the end slip  distribution, can be used as it low-fed by docking with the mobile substation.

Function Features

It is uesd in coal mines for three-phase isolated neutral power supply system with AC 50Hz, rated voltage 1140V(660V) and rated current to 200A, 400A, It can be used as matser switch or sub-switch of power distribution system or used to control infrequency high-capacity starter.

The protection system, adopting advanced DSP microprocessors and high-capacity new chip for two-chip working, equipped with high-precision data processing and advanced protesting algorithms has high precision of protection and fast response. It can complete a number of protection functions such as overload, short circuit (inluding phase-sensitive protection and current amplitude protection), leakage atresia, leakage protection, selective leakage protecion, undervoltage, three-phase imbalance, phase breaking, temperature protection, gas protection, wind power atresia, power measurement etc. Besides, it is possible to customize to the manufactures the live side-load instructions, communication network,  power-off atresia etc.

1. liquid crystal display

2. communications network functions

3. three-tier selective leakage protection

4. electrical degrees measurement

5. fault memory and query

6. wind power and gas power atresia protection

7. functions opening and closing

8. parameters fine- turning and correction

9. testing functions for site analog

10.  clock display

11.  current, voltage,fault parameters, realtime display

12. leakage atresia

13. long-range short-circuit protection

14. overload and short-circuit protection

Main Tenichcal Parameters

Rated Voltage: 1140V(660V)

Rated Current: 400(200A)

Ultimate Breaking Capacity: 7.5KA

Rated Working System: Long-term

Operation: electric operation, sub-gate

Dimensions: 780mmx550mmx850mm

Weight: 310kg

Mining Explosion-proof Vacuum Feeder Switch