KJSGZY2-T Flameproof and Intrinsically Safe Mobile Substation for Mining Applications
An integrated mobile substation for explosive hazardous environments in underground coal mines, it adopts a flameproof and intrinsically safe structure to achieve highly reliable power supply and distribution through phase-shift power supply and centralized protection, and supports linkage with frequency conversion and monitoring systems, significantly improving power supply reliability and operational efficiency.
Product Introduction
Key Specifications
Rated Input Voltage
3.3kV
Rated Output Voltage
1140V / 3300V
Power supply mode
Powered by two sets of three-phase supplies with a 30-degree phase difference
Insulation Class
Class F / Class H Insulation
Protection Class
IP65 (Flameproof Design)
Applications
Mining working face
Power supply for high-load fully mechanized mining faces, with focus on centralized protection and interlocking
Temporary power distribution points
Scenarios with frequently changing locations, emphasizing rapid relocation and reliable power supply
Frequency conversion and monitoring
Underground power supply and distribution requiring coordination with VFD/monitoring systems
Product Overview
- Flameproof heat dissipation structure: patented cooling design increases the heat dissipation area, and the high-strength flameproof enclosure withstands 1MPa pressure
- High voltage coil: continuous winding structure offers superior heat dissipation and mechanical strength, with partial discharge ≤5pC for more reliable operation
- Low-voltage winding: Patented spiral/foil structure (002219069), moisture-proof, dust-proof, and salt-spray resistant, with short-circuit and impact withstand capability
- High-quality core: grain-oriented silicon steel sheets with 45° step lapping and moisture- and rust-proof coatings reduce no-load loss and noise
- NOMEX insulation system: DuPont NOMEX paper insulation provides a high safety margin and strong reliability
- Rigorous factory testing: 100% inspection of partial discharge, lightning impulse, noise, and more to ensure quality and stability
Product Features
Flameproof Design, Safe and Reliable
Featuring a mining flameproof design with an IP65 protection rating, it operates safely in complex underground coal mine environments.
Compact Structure, Small Size
Compared with the traditional two-transformer power supply scheme, the unit is smaller and easier to install flexibly, making it suitable for mobile use underground.
Efficient Power Supply, Superior Performance
Dual three-phase power supply with a 30-degree phase difference meets three-level variable frequency rectification requirements, improving power supply efficiency and reducing voltage drop.
Intelligent Control, Comprehensive Functions
Supports communication with flameproof variable frequency drives, featuring operating status monitoring, fault interruption, and centralized control functions for enhanced automation.
Energy Saving and Eco-Friendly, Highly Economical
Aligns with national energy-saving and emission-reduction policies, reducing equipment operating losses and investment costs for greater economic benefits.
Strong protection performance
Moisture-proof, dust-proof, and salt-fog resistant, adapting to humid, dusty underground environments and ensuring stable equipment operation.
Standards and certifications
GB 3836.1-2021
Explosive atmospheres - Part 1: Equipment - General requirements
GB 3836.2-2021
Explosive atmospheres Part 2: Flameproof enclosure "d"
GB/T 1094.1-2013
Power Transformers – Part 1: General
MT/T 437-2016
General Technical Conditions for Mining Flameproof Variable-Frequency Drives
GB/T 15576-2008
General Technical Conditions for Mining Explosion-Proof Electrical Equipment
Technical Advantages
R&D cloud platform
Integrates electromagnetic optimization design, parametric drawing, performance analysis, structural optimization, and automatic drawing output for transformers, enabling shared transformer design resources and search, modification, and version control of all kinds of data.
Simulation Analysis
Flow field, temperature field, electric field, leakage magnetic field, wave process, and short-circuit force. The R&D and design of every product series are verified through flow field and temperature field simulation analysis to determine the winding average temperature rise and hot-spot temperature, ensuring product performance.
Smart O&M platform
By collecting key data such as transformer temperature, current, voltage, vibration, and grid harmonics, it enables online power quality analysis and fault alarms, and can be installed on mobile phones.
