Scope of application
This mining general type dry-type transformer is suitable for the power supply and distribution system under the mines without explosive hazardous environments such as methane and coal dust, and it is widely used in metal and non-metal mines such as iron ore, copper ore, gold ore, aluminum ore, quarry, alum ore, and other metal and non-metal mines, as well as highways, railroads, tunnels, and other engineering sites, to satisfy the needs of a variety of complex working conditions.
Product description
1. Shell and protection: optional shell, protection level IP21 to IP32. anti-solid foreign objects and dripping water into, suitable for mining environment.
2. Temperature control function: equipped with temperature protection device, supporting temperature display, over-temperature alarm, tripping and fan start, to ensure safe operation.
3. Cooling method: natural cooling (AN) supports 100% rated capacity, forced cooling (AF) increases capacity by 50%, suitable for short-time overload operation.
4. High-voltage and low-voltage coils: High-voltage coils are vacuum casted to inhibit localized emissions, while low-voltage coils are wound with foil conductors to ensure high precision and stability.
5. Iron core design: high magnetic conductivity silicon steel sheet, 45 ° inclined stepping lap, coated with moisture-proof and rust-proof layer to reduce loss and noise.
6. Strict testing: local discharge, lightning impact, noise and other tests according to national standards to ensure high quality and reliability of the product.
Product features
High-strength shell design
KKSG shell is welded with high-quality section steel and cold-rolled steel plate, sandblasted to remove rust, and coated with five anticorrosive paints, which has high mechanical strength and excellent anticorrosive ability.
Heat dissipation and temperature control
Natural ventilation combined with automatic control fan forced air cooling, effective temperature control to ensure the safe operation of the equipment.
Low loss and high performance
The product has low loss, low local discharge, low noise, strong heat dissipation ability, and the performance parameters are better than the national standard.
Safety and environmental protection
With flame retardant, fireproof and non-polluting characteristics, it can be directly installed in the load center.
Convenience and low cost
Maintenance-free design, convenient installation, low operating cost and high overall price ratio.
High Reliability and Protection
High reliability, strong anti-seismic performance, moisture-proof, corrosion-resistant, adapt to the harsh environment of the mine.
Main Parameters
Rated capacity: 50kVA ~ 2500kVA (customizable)
Rated voltage: High voltage side 3.3kV/6kV/10kV
Rated voltage: LV side 0.69kV/0.4kV
Connection group: Dyn11, Yyn0 (or customized)
Insulation class: F class/H class
Execution standard
GB/T 10228-2015 Technical parameters and requirements for dry-type power transformers
GB/T 1094.1-2013 Power transformers Part 1: General provisions
GB/T 1094.11-2007 Dry-type power transformers
GB/T 15576-2008 General technical conditions for mining explosion-proof electrical equipment
MT/T 437-2016 General technical conditions for mining explosion-proof frequency converter
