The mining explosion-proof frequency converter is a power control device designed for coal mines with explosive hazardous environments such as coal dust and gas. It is used to adjust the speed and output power of AC motors. It is suitable for asynchronous motors and permanent magnet synchronous motors. It has the characteristics of large starting torque, high speed regulation accuracy, long power ...

Product Introduction This series of products are mainly used in coal mines and other explosive gas environments containing methane and coal dust mixtures in AC 50Hz voltage 1140V or 660V or 380V three-phase neutral point ungrounded lines to control the start and stop of three-phase asynchronous motors locally or remotely, and can perform reversing when the motor is stopped. (Models with N can cont...

1. Introduction Under the background of the rapid development of industrial production today, the demand for the transportation of various materials such as coal and ore is growing. As the core equipment for material transportation, the stable operation of the conveyor is crucial. The BPQJ-(400, 250)/1140S explosion-proof and intrinsically safe combined frequency conversion starter for conveyor te...

Introduction In modern mining operations, the efficient and stable performance of large-scale equipment such as belt conveyors, hoists, pumps, and fans is crucial. Traditional fixed-speed motor drives suffer from high starting currents, excessive energy consumption, and strong mechanical shocks. The advent of mining high-voltage explosion-proof frequency converters has revolutionized the industry ...

Introduction In hazardous mining environments, electrical safety and reliability are critical. The Explosion-Proof and Intrinsically Safe Permanent Magnet Vacuum Feeder Switch is an advanced electrical protection device designed for underground coal mines, metal mines, and other explosive gas/dust environments. Combining flameproof enclosure, intrinsically safe circuits, and permanent magnet vacuu...

Introduction In underground mining operations, electrical safety is non-negotiable. Harsh environments—filled with flammable gases, dust, and moisture—demand robust protection against explosions and electrical faults. This is where Expolsion-Proof Intrinsically Safe Permanent Magnet Vacuum Feed Switch come into play. These advanced switching devices combine flameproof enclosures (Ex d) with intrin...