KJGZY Mining High-Voltage Permanent Magnet Vacuum Switch

CEEG KJGZY Mining High-Voltage Permanent Magnet Vacuum Switch

High-voltage flameproof and intrinsically safe vacuum circuit breaker for mining mobile substations. It adopts a permanent magnet operating mechanism and multi-protection logic, supporting coordinated control of overload, short circuit, leakage, and gas interlock. It features strong breaking capacity, stable operation, and high safety and reliability.

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180-1334-5718

Scope of application

High-Voltage Side of Mobile Substations

High-voltage power feeding and protection, focusing on multi-level interlock protection.

Mine High-Voltage Ring Network

High-voltage ring network systems in mines, emphasizing reliable switching operations and protection logic.

Power Supply for Large Equipment

High-voltage power supply circuits for mining and excavation equipment, focusing on short-circuit and overload protection.

Product Description

1 Four-chamber independent flameproof design: after tripping, the main chamber is de-energized, allowing maintenance without disconnecting the upstream power supply.

2 Multi-user interlocking system: four-position redundant lockout points, preventing closing operation until all locks are released by personnel.

3 Dual-drive redundancy: permanent magnet mechanism as the primary drive, with mechanical manual backup to ensure reliable switching even under power loss conditions.

4 Status visualization: transparent arc cover with backlight for clear contact position indication; reserved interfaces for temperature measurement and infrared expansion.

5 Quick-opening structure: external latch + internal locking mechanism, tool-free fast opening, enabling single-person operation in about 10 seconds.

6 Intelligent connectivity: unified isolated RS485/RJ45 interfaces on both high and low voltage sides, directly connected to monitoring platforms, supporting remote operation and maintenance.

Product Features

Safety Design

Adopts a flameproof enclosure, suitable for underground coal mines and explosive environments, ensuring safe operation.

Core Components

Equipped with a high-performance vacuum circuit breaker, featuring excellent breaking capacity and long service life.

Environmental Adaptability

Operates stably in harsh conditions with high humidity and heavy dust, meeting actual mining requirements.

Protection Functions

Provides multiple protection functions including short circuit, overload, undervoltage, leakage, and ground fault, ensuring reliable system operation.

Flexible Application

Suitable for 3.3kV ~ 10kV high-voltage power systems, used for supplying and protecting underground fans, water pumps, and mining equipment.

Easy Maintenance

Modular design with a well-structured layout, facilitating installation, commissioning, and routine maintenance.

Implementation Standard

GB/T 12173 Standard for flameproof mobile substations for coal mines

MT/T 209 General technical requirements for high-voltage vacuum switchgear for coal mines

GB/T 1984 & GB/T 3906 Technical requirements for high-voltage switchgear and controlgear

GB 14048.2 Standards for low-voltage switchgear and controlgear

MT/T 451 Technical requirements for flameproof 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 Voltage	3.3kV、6kV、10kV
Rated Frequency	50Hz
Rated Current	200A~1250A
Explosion Protection Level	Exd I Mb
Protection Degree	IP54