KS9 mining transformer

　　The KS9 mining transformer is a specialized power equipment designed for harsh environments such as coal mine shafts, featuring the following key characteristics and application highlights:

　　I. Product Characteristics

　　1. Design and Structure

　　Compact Size: Facilitates installation in the limited space of mine shafts.

　　Fully Enclosed Structure: High protection class, adapting to humid, dusty, and other adverse conditions.

　　Core and Windings: Constructed with high-quality silicon steel laminations, adopting a multi-stage circular cross-sectional design to reduce noise and losses. Windings support Y/△ connections to meet diverse voltage requirements.

　　2. Performance Parameters

　　Rated Capacity: Ranges from 5-1600kVA. Common models like KS9-315/10 (315kVA) are suitable for small to medium-sized mines.

　　Voltage Configuration: The high-voltage side supports 6kV and 10kV, while the low-voltage side offers 0.4kV or 0.69kV, with a tapping range of ±5%.

　　Energy Efficiency and Losses: No-load losses are reduced by approximately 10%-30%, and load losses are decreased by 20%, resulting in a significant improvement in overall energy efficiency.

　　3. Safety and Reliability

　　Explosion-Proof and Protection: Suitable for use in gaseous environments without explosion hazards, complying with mining safety standards.

　　Environmental Adaptability: Operable at altitudes ≤1000m, with a temperature range of -25°C to +40°C, and humidity ≤95% (at +25°C).

　　Convenient Maintenance: The tank design allows for rapid inspection and repair, and the tapping switch facilitates voltage adjustment.

　　II. Application Scenarios

　　1. Power Distribution in Coal Mines

　　Used for power distribution in central substations, shaft bottom yards, main intake airways, and other areas, supplying electricity to lighting, ventilation, drainage, and other equipment.

　　2. Humid Environment Applications

　　Suitable for humid locations such as tunnels and underground projects, ensuring stable equipment operation.

　　3. Special Voltage Requirements

　　Supports customized voltage combinations (e.g., 6/0.66kV) to meet the specific load demands of mines.

　　III. Technical Details

　　1. Cooling Method

　　Oil-immersed natural cooling (ONAN), ensuring efficient heat dissipation and long-term stability.

　　2. Insulation and Materials

　　Insulation class H or higher, utilizing high-quality insulating varnish and impregnation processes to enhance heat resistance and mechanical strength.

　　3. Compliance Standards

　　Conforms to JB3995-2006, GB1094 series standards, ensuring product quality and safety.

　　IV. Selection and Procurement Recommendations

　　1. Capacity Selection

　　Determine the capacity based on the mine's load requirements to avoid overloading or resource waste.

　　2. Customization Needs

　　For special voltages, protection classes, or installation methods, communicate with the manufacturer in advance.

　　3. Manufacturer Qualifications

　　Choose manufacturers with ISO certification to ensure products comply with national standards and mining safety regulations.

　　4. After-Sales Service

　　Confirm the warranty period (typically ≥20 years) and operational and maintenance support capabilities to reduce long-term usage costs.