Product Overview
The Flameproof Reversible Vacuum Magnetic Starter is applicable to underground coal-mine environments containing explosive gases (methane mixtures) and coal dust. It suits AC 50 Hz systems at 380 V, 660 V or 1140 V with load current up to 200 A, primarily for local or remote starting, stopping and reversing of flameproof three-phase squirrel-cage induction motors, with comprehensive motor and circuit protection.
Product Description
Reversing motors drive many underground machines — conveyor direction changes, winch operation, shuttle movements — and each reversal must be delivered safely in an atmosphere that may contain methane and coal dust. The Flameproof Reversible Vacuum Magnetic Starter is applicable to underground coal-mine environments containing explosive gases (methane mixtures) and coal dust: it controls flameproof three-phase squirrel-cage induction motors with local or remote start, stop and reverse functions, all inside a certified flameproof enclosure.
The starter is suitable for AC 50 Hz systems at 380 V, 660 V or 1140 V, with load current up to 200 A. Vacuum contactors provide long electrical life, low maintenance and dependable switching, while the reversing configuration allows the motor direction to be changed safely without mechanical reconnection at the machine.
Beyond switching, the starter provides comprehensive motor and circuit protection, including overload, short circuit, phase-loss and leakage lockout protection. This protects both the motor and the circuit from the most common failure modes in underground power systems. Local and remote control options let operators start and stop machines from the switch itself or from a control room, integrating naturally into centralized mine automation while retaining full manual capability at the unit.
Key Features
- Flameproof design for gas and coal-dust environments
- Reversible control of three-phase squirrel-cage induction motors
- Local or remote starting, stopping and reversing
- AC 50 Hz systems at 380 V, 660 V or 1140 V, load current up to 200 A
- Vacuum switching for long life and low maintenance
- Overload, short circuit, phase-loss and leakage lockout protection
Technical Specifications
| Parameter | Value |
|---|
| Rated Voltage | 380 V / 660 V / 1140 V AC, 50 Hz |
| Rated Load Current | Up to 200 A |
| Control Functions | Local/remote start, stop, reverse |
| Motor Type | Flameproof three-phase squirrel-cage induction motors |
| Protection | Overload, short circuit, phase-loss, leakage lockout |
| Switching | Vacuum contactors |
| Safety Design | Flameproof |
Applications
Reversing conveyor drives, winch and shuttle motor control, underground motor starting and protection, and remote control of mining machines in gas-risk areas.
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