Load Centre
A Load Centre is an underground electrical distribution unit used in mines to receive high-voltage power and distribute it safely to various mining equipment such as Continuous Miner, Shuttle Car, Feeder Breaker, and pumps.
It usually consists of a step-down transformer, switchgear, protection devices, and control panels housed in a flameproof enclosure for safety in gassy mines.
Main Functions
- Power Distribution
Supplies electrical power to underground mining machines. - Voltage Transformation
Converts high voltage (e.g., 3 kV or 6.6 kV) to lower voltage suitable for equipment. - Protection System
Includes circuit breakers, relays, and protection systems to prevent overload, short circuit, and earth faults. - Control of Equipment
Provides switching and control for multiple underground machines.
Advantages
- Safe power supply in gassy underground mines
- Centralized electrical control and protection
- Reliable power distribution to mining equipment
- Reduces electrical hazards and equipment damage
Applicability
Load Centres are used in:
- Continuous Miner mining systems
- Underground coal mines
- Areas requiring safe electrical distribution
- Mines operating high-power electrical equipment
