KBSG Mining Explosion-Proof Dry-Type Transformer

CEEG KBSG Mining Explosion-Proof Dry-Type Transformer

The KBSG series mining flameproof dry-type transformer innovatively incorporates active cooling tube technology. Through optimized thermal design and a zoned high-efficiency cooling solution, it significantly improves heat dissipation performance, effectively slows the aging of insulating materials, and further enhances long-term operational stability and reliability of the product.

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180-1334-5718

Scope of application

Underground distribution rooms

Gas and coal dust environments, focusing on flameproof construction and heat dissipation.

Tunnel mining operations

Tunnel environments with explosive gas risks, emphasizing reliable operation.

Fluctuating loads

Frequent start-stop operations and load variations in underground applications, focusing on impact resistance.

Product Description

1 Stronger cooling: First-in-class multi-circuit active cooling structure with higher heat exchange efficiency, ensuring stable operation under long-term heavy load conditions.

2 Maintenance-friendly design: Anti-dust, anti-heat accumulation, and anti-water ingress design with front-mounted tap changer, resulting in a more compact structure.

3 Flexible mobility: Can be integrated with high-voltage switchgear and low-voltage protection enclosures to form an intrinsically safe explosion-proof loop, with an adjustable base for flexible installation and movement.

4 NOMEX insulation system: High thermal resistance and anti-aging performance with stable insulation properties, ensuring safety and reliability.

5 Strict design and manufacturing control: Optimized structural design with rigorous production and testing processes to ensure stable flameproof performance.

6 Low loss, low partial discharge, and low noise: Higher operational efficiency and extended service life.

Product Features

Innovative cooling system

Adopts active cooling tubes and a zoned high-efficiency cooling design. Through internal and external air heat exchange and natural convection, it significantly enhances the transformer’s heat dissipation capability, ensuring stable operation in high-temperature environments.

Extended service life

Optimized cooling design effectively reduces internal temperature rise, slowing the aging of insulating materials, extending equipment service life, and reducing maintenance frequency.

Convenient operation

A vertical tap-changing access handhole is provided on the high-voltage side, making operation more convenient, reducing safety risks during operation, and improving usability.

Improved safety

The top corrugated plate features an arc-shaped design to prevent coal dust accumulation and reduce the risk of fire caused by high temperatures, significantly enhancing operational safety.

Compact and expandable design

The transformer base adopts a frame-type structure, saving space and ensuring compactness for easy installation and future expansion. It also supports adjustable wheelbase and center of gravity to adapt to different working conditions.

Convenient maintenance

The inspection doors and observation windows are reasonably arranged, making routine inspection and component replacement more time-saving and labor-efficient.

Implementation Standard

GB 11022-2019 Common specifications for high-voltage switchgear and controlgear standards

GB 12023-2016 Safety regulations for flameproof electrical equipment for coal mines

IEC 60076 International standard for power transformers

GB/T 19212.1-2015 Flameproof electrical equipment for coal mines – Part 1: General requirements

GB/T 6451-2015 Dry-type power transformers

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 capacity	50–4000 kVA
Primary voltage	6000 ±5%; 10000 ±5%
No-load current	0.6–2.5%
Rated frequency	50 Hz
Maximum temperature rise	≤ 65°C
Insulation class	Class F (155°C) or Class H (180°C)