KBD series explosion-proof feeding switch for mining useDetailed product description：

Scope and Application

The KBD series mining explosion-proof feeder switch is suitable for use in coal mines or industrial and mining enterprises with explosive gas mixtures (methane) and coal dust. It can be used as the main switch and branch switch of the power supply line in the AC 50Hz, 380V or 660V power system, and can also be used for infrequent starting of large capacity motors. When there is a short circuit or overload fault in the circuit, the feed switch can automatically cut off the circuit; At the same time, it can cooperate with leakage relays to protect against leakage faults in the system.
The feed switch is designed and manufactured in accordance with standards such as GB3836.1-2000 "Electrical Equipment for Explosive Gas Environments Part 1: General Requirements", GB3836.2-2000 "Electrical Equipment for Explosive Gas Environments Part 2: Explosion proof Type" d "", and JB3956-1985 "Mine Explosion proof Feed Switches".

KBD series mining explosion-proof feeder switch model meaning

Technical parameters of KBD series mining explosion-proof feeder switch



Structural Overview

1. The power supply switch consists of GXW1-200/400 type main circuit breaker and explosion-proof casing with cover.
2. The explosion-proof shell of the feed switch is welded with Q235-A steel plate, cylindrical in shape, with a protruding bottom and cover. The shell cover and body adopt a rotating cover stop structure. On the right side of the shell, there is a circuit breaker operating handle for opening and closing the circuit breaker. There is a reliable mechanical interlocking device between the cover and the operating handle, which ensures that the cover cannot be opened when the circuit breaker is closed; After the lid is opened, the handle cannot be operated in the normal way to close the circuit breaker. There is a junction box on the upper part of the shell for introducing and extracting cables. The introduction device is used to tighten the nut or flange to make the rubber sealing ring press the cable to meet the explosion-proof requirements.