KKSG General-Purpose Mining Dry-Type Transformer
General-purpose mining dry-type transformer with reinforced insulation and heat dissipation design, featuring low losses, low noise, and good moisture and dust resistance for various aboveground and underground auxiliary power distribution applications.
Product Introduction
Key Specifications
Rated Capacity
50kVA ~ 2500kVA (customizable)
Rated high voltage
HV side 3.3kV/6kV/10kV
Rated low voltage
Low-voltage side 0.69kV/0.4kV
Vector Group
Dyn11, Yyn0 (or customizable to user requirements)
Insulation Class
Class F/H
Applications
Surface coal preparation
Power distribution for coal preparation and ore dressing plants, focusing on dust protection and reliable operation
Underground auxiliary
Auxiliary power distribution in general environments, emphasizing low noise and moisture resistance
Mining area facilities
Power supply for office/living areas and auxiliary sites, focusing on maintenance convenience
Product Overview
- Optional protection: available enclosures rated IP21–IP32 guard against foreign objects and dripping water, suited to mining environments
- Temperature control protection: temperature display, over-temperature alarm/trip and fan interlock for safer operation
- Cooling capacity boost: full load with AN; AF increases capacity by about 50% to handle short-term overloads
- Winding process: HV vacuum casting suppresses partial discharge; LV foil winding offers a stable structure and high precision
- Low loss and low noise: premium silicon steel laminations + 45° step-lap joints + moisture-proof coating reduce losses and noise
- Rigorous factory inspection: partial discharge, impulse, noise and other tests completed to standards for higher reliability
Product Features
High-strength enclosure design
The KKSG enclosure is welded from high-quality section steel and cold-rolled steel plate, sandblasted to remove rust, and coated with five-proof paint, offering high mechanical strength and excellent corrosion resistance.
Heat dissipation and temperature control
Natural ventilation combined with automatically controlled forced-air cooling effectively controls temperature and ensures safe equipment operation.
Low losses and high performance
Low losses, low partial discharge, low noise, and strong heat dissipation, with performance parameters exceeding national standards.
Safe and eco-friendly
Difficult to ignite, fireproof, and pollution-free—can be installed directly at load centers.
Convenience and low cost
Maintenance-free design, easy installation, low operating costs, and excellent overall value.
High Reliability and Protection Capability
Highly reliable with strong seismic performance plus moisture and corrosion resistance, adapting to harsh mine environments.
Standards and certifications
GB/T 10228-2015
Technical Parameters and Requirements for Dry-Type Power Transformers
GB/T 1094.1-2013
Power Transformers – Part 1: General
GB/T 1094.11-2007
Dry-type power transformer
GB/T 15576-2008
General Technical Conditions for Mining Explosion-Proof Electrical Equipment
MT/T 437-2016
General Technical Conditions for Mining Flameproof Variable-Frequency Drives
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.
