KJSGZY2-T Mining Explosion-Proof Mobile Substation

CEEG KJSGZY2-T Mining Explosion-Proof Mobile Substation

Integrated mobile substation for underground coal mine explosive hazardous environments, featuring a flameproof and intrinsically safe structure. It achieves highly reliable power supply and distribution through phase-shifting power supply and centralized protection, and supports integration with variable frequency drives and monitoring systems, significantly improving power supply reliability and operational efficiency.

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1899-414-7812

Scope of application

Mining face

High-load fully mechanized mining power supply, focusing on centralized protection and system coordination.

Temporary distribution points

Frequently relocated scenarios, emphasizing rapid relocation and reliable power supply.

Variable frequency and monitoring systems

Underground power supply and distribution applications requiring coordination with VFD and monitoring systems.

Product Description

1 Flameproof cooling structure: Patented cooling design increases heat dissipation area. The flameproof enclosure features high mechanical strength and can withstand up to 1 MPa pressure.

2 High-voltage winding: Continuous structure with improved thermal performance and mechanical strength. Partial discharge ≤ 5 pC, ensuring higher operational reliability.

3 Low-voltage winding: Patented spiral/foil structure (002219069), providing resistance to moisture, dust, and salt spray, with strong short-circuit and impact resistance.

4 High-quality core: Grain-oriented silicon steel with 45° step-lap construction and anti-corrosion coating, reducing no-load loss and noise.

5 NOMEX insulation system: Uses DuPont NOMEX paper insulation, offering high safety margin and strong reliability.

6 Strict factory testing: Full inspection of partial discharge, lightning impulse, and noise tests to ensure quality and operational stability.

Product Features

Flameproof design with high safety

Adopts a mining flameproof structure with IP65 protection rating, enabling safe operation in complex underground coal mine environments.

Compact structure with small footprint

Compared with traditional dual-transformer power supply schemes, the equipment has a smaller size and flexible installation, making it suitable for underground mobile applications.

Intelligent control with comprehensive functions

Supports communication with flameproof variable frequency drives, featuring operational status monitoring, fault interruption, and centralized control to enhance automation levels.

Efficient power supply with superior performance

Utilizes two sets of three-phase power supplies with a 30° phase shift to meet three-level VFD rectification requirements, improving power supply efficiency and reducing voltage drop.

Energy-saving and cost-effective

Complies with national energy conservation and emission reduction policies, reducing operational losses and investment costs while improving overall economic benefits.

Strong protection performance

Provides resistance to moisture, dust, and salt spray, ensuring stable operation in humid and dusty underground environments.

Implementation Standard

GB 3836.1-2021 Explosive atmospheres – Part 1: Equipment – General requirements

GB 3836.2-2021 Explosive atmospheres – Part 2: Equipment protection by flameproof enclosure “d”

GB/T 1094.1-2013 Power transformers – Part 1: General rules

MT/T 437-2016 General technical requirements for flameproof variable frequency drives for coal mines

GB/T 15576-2008 General technical requirements for explosion-protected electrical equipment for coal mines

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 input voltage	3.3 kV
Rated output voltage	1140 V / 3300 V
Power supply mode	Two sets of three-phase power supply with 30° phase shift
Insulation class	Class F / Class H
Protection degree	IP65 (flameproof design)