BXJ Mining Low-Voltage Protection Box

CEEG BXJ Mining Low-Voltage Protection Box

The BXJ mining low-voltage protection box is a flameproof low-voltage protection device used in mobile substations. It integrates short-circuit, overload, leakage, and interlock protection functions. With explosion-proof and flameproof characteristics, it can work in coordination with upstream circuit breakers to enhance the safety of underground low-voltage power systems.

Consult Now

180-1334-5718

Scope of application

Fully Mechanized Mining Low-Voltage Distribution

On-site low-voltage power supply, focusing on leakage and short-circuit protection

Pump House & Ventilation Fans

Power supply for critical electromechanical loads, emphasizing interlock control and safety

Low-Voltage Circuits Requiring Local Distribution and Protection

Power distribution for mobile equipment systems

Product Description

1 Multiple protection functions: overload, short circuit, leakage interlock, phase loss, over-temperature, gas interlock, emergency stop, etc.

2 Stable control: PLC + HMI system ensures accurate protection and easy maintenance.

3 Safer maintenance: continuous current setting with 1A step adjustment, supporting live maintenance requirements.

4 Intelligent operation and maintenance: self-check, diagnosis, inspection, and fault recording, providing clearer status information.

5 Compact structure: modular design with small size, reasonable layout, and intuitive operation.

6 Flexible customization service: in-house manufacturing allows customized design according to customer requirements, with flexible design and fast response.

Product Features

Design Features

Adopts an explosion-proof structure, compliant with mining flameproof requirements, ensuring safe operation in flammable and explosive environments.

Application Scope

Suitable for underground coal mines and other hazardous locations with explosive gases or dust.

Installation & Maintenance

Supports wall-mounted or floor-standing installation, offering flexibility. The structural design facilitates routine maintenance and fault diagnosis.

Main Functions

Provides power supply and control for mining power equipment, lighting systems, fans, and water pumps.

Interlock Protection

Equipped with leakage interlock, ventilation power interlock, and gas interlock functions. In abnormal conditions, it quickly cuts off the circuit to improve electrical safety underground.

Modular Circuit Expansion

Flexible circuit configuration allows feeder and protection units to be added or removed by load zone, enabling easy future expansion and maintenance replacement.

Implementation Standard

GB 3836 Series General requirements and flameproof standards for electrical equipment in explosive atmospheres

GB/T 14048 Series Requirements for low-voltage switchgear and controlgear

MT 209 / MT 761 Technical specifications for mining flameproof electrical equipment

MA Certification Mining Safety Mark Certification required for underground coal mine equipment

Technical Advantages

R&D Cloud Platform

An integrated digital platform combining electromagnetic optimization design, parametric modeling, performance analysis, structural optimization, and automatic drawing generation. It enables transformer design resource sharing and efficient data management, including search, modification, and version control.

Simulation Analysis

Comprehensive multi-physics simulation covering fluid flow, thermal field, electric field, leakage magnetic field, transient processes, and short-circuit forces. Each transformer series is optimized through thermal and flow analysis to accurately control winding temperature rise and hotspot distribution, ensuring reliable and stable performance.

Smart Operation & Maintenance Platform

By collecting key data such as temperature, current, voltage, vibration, and grid harmonics, the system enables real-time power quality analysis and fault alarms. It also supports mobile access for remote monitoring and intelligent O&M management.

Rated Voltage	1140V / 660V
Rated Frequency	50Hz
Rated Current	10A ~ 1250A
Control Mode	PLC control + Human-Machine Interface (HMI)
Explosion Protection Level	Ex d I Mb