Mining dry-type transformer model

　　Mine-used dry-type transformers are electrical devices specifically designed for harsh environments such as coal mines, featuring characteristics like moisture resistance, dust resistance, fire resistance, and explosion prevention to ensure safe and reliable operation underground. Below are some common mine-used dry-type transformer models and their relevant information:

I. Common Mine-Used Dry-Type Transformer Models

　　KBSG Series

　　Model Examples: KBSG-500/10, KBSG-1000/10, etc.

　　Features:

　　Adopts epoxy resin casting process, offering excellent insulation performance, moisture resistance, and corrosion resistance.

　　Good fire resistance with an oil-free design, eliminating fire hazards.

　　Compact size and lightweight, facilitating easy installation and maintenance.

　　Suitable for environments in coal mines with gas and coal dust explosion hazards.

　　KBSGZY Series

　　Model Examples: KBSGZY-630/10, KBSGZY-1250/10, etc.

　　Features:

　　Mobile mine-used flameproof dry-type transformer with a flameproof enclosure capable of preventing the propagation of internal explosions.

　　Suitable for supplying power to mobile mining equipment requiring frequent relocation, such as roadheaders and shearers.

　　Possesses good overload capacity and short-circuit withstand capability.

　　KSGB Series

　　Model Examples: KSGB-315/10, KSGB-400/10, etc.

　　Features:

　　Dry-type, self-cooled, and oil-free design, ensuring safety and reliability.

　　Suitable for central substations and mining area substations in coal mines.

　　Compact structure with a small footprint.

　　II. Model Nomenclature Explanation

　　Taking KBSG-500/10 as an example:

　　K: Indicates mine-use.

　　B: Indicates flameproof type.

　　S: Indicates three-phase.

　　G: Indicates dry-type.

　　500: Indicates a rated capacity of 500 kVA.

　　10: Indicates a high-voltage side rated voltage of 10 kV.

　　III. Selection Considerations

　　Rated Capacity: Select an appropriate transformer capacity based on the total power and load characteristics of the electrical equipment to avoid overloading or capacity waste.

　　Voltage Level: Ensure that the high-voltage and low-voltage sides of the transformer match the voltage levels of the power supply system and electrical equipment.

　　Protection Level: Choose a protection level that meets the environmental requirements of coal mines to ensure moisture, dust, and explosion resistance.

　　Cooling Method: Select an appropriate cooling method, such as self-cooling or forced-air cooling, based on the installation environment and operating conditions.

　　Brand and Quality: Choose products from well-known brands with good reputations to ensure quality and after-sales service.

　IV. Maintenance and Care

　　Regular Inspections: Regularly inspect the transformer's appearance, wiring, and fasteners to ensure no loosening, damage, or overheating occurs.

　　Cleaning and Maintenance: Keep the transformer surface clean to prevent the accumulation of dust and debris, which could affect heat dissipation and insulation performance.

　　Temperature Monitoring: Install temperature monitoring devices to monitor the transformer's operating temperature in real time and prevent overheating.

　　Preventive Tests: Conduct preventive tests at specified intervals, such as insulation resistance tests and DC resistance tests, to promptly detect potential faults.