KS11 mining transformer

　　Core Analysis of KS11 Mine Transformers

　　I. Product Features and Advantages

　　1. High Efficiency and Energy Savings

　　The KS11 series of mine transformers adopts low-loss grain-oriented silicon steel sheets, reducing no-load losses by over 30% and load losses by 20%. Compliant with the GB20052 secondary energy efficiency standard, it significantly lowers electricity costs for mining operations over long-term use.

　　2. Robust Structure

　　The oil tank is designed to withstand a pressure test of 1 atmosphere, and the absence of a conservator enhances safety.

　　High- and low-voltage cable connection boxes are integrated on both sides of the tank, supporting direct cable connections.

　　The base is equipped with skids and mounting holes, allowing the addition of mine cart wheels to adapt to mobile requirements in mine tunnels.

　　3. Flexible Voltage Regulation

　　The high-voltage coil provides tapping voltages of ±5% or ±2×2.5%. Voltage adjustments via the tap changer require de-energization, meeting the adaptability needs of mine grid voltage fluctuations.

　　4. Safety Protection

　　The protection rating reaches IP45 (IP54 for some models), offering excellent dust and water resistance.

　　Temperature protection devices monitor operating status in real time to prevent overheating risks.

　　Suitable for mine environments without explosion hazards (e.g., coal dust and gas sites).

　　II. Technical Parameters and Specifications

　　III. Application Scenarios and Selection Recommendations

　　1. Typical Application Scenarios

　　Mine Power Distribution: Provides stable power for lighting, ventilation, and drainage equipment.

　　Large-Scale Mining Machinery: Powers high-power equipment such as crushers and hoists.

　　New Energy Integration: Serves as step-up transformers for wind and photovoltaic power plants (requires customization for 35KV high-voltage models).

　　2. Key Selection Considerations

　　Capacity Matching: Reserve a margin based on load type (20%–30% additional capacity for motor startups).

　　Voltage Compatibility: Ensure the high-voltage side matches the mine grid voltage and the low-voltage side supports equipment connection methods (Y/Δ).

　　Environmental Adaptability:

　　Altitude ≤1000m (derate for higher altitudes).

　　Ambient temperature ≤40°C (forced oil circulation cooling required for high-temperature environments).

　　Relative humidity ≤95% (at 25°C).

　　IV. Market Pricing and Procurement Recommendations

　　1. Price Ranges

　　50–630KVA: Approximately RMB 11,000–32,000 per unit (e.g., Shandong Huaheng KS11-200KVA ≈ RMB 18,000).

　　1000KVA: Approximately RMB 34,000–75,600 per unit (e.g., Yunnan Huayi all-copper 1000KVA model ≈ RMB 34,000).

　　1600KVA: Approximately RMB 75,600 per unit (e.g., Huasheng Group KS11-1600KVA).

　　2. Procurement Recommendations

　　Limited Budget: Opt for basic models from brands like Shandong Huaheng or Lianchun Electric, but verify CCC certification and Mine Product Safety Marks (MA certification).

　　Long-Term Stability: Prioritize all-copper coil models from Huasheng Group or Shandong Kerui, with a lifespan exceeding 20 years.

　　Custom Requirements: Contact manufacturers for customization options such as 35KV high-voltage models, special protection ratings (e.g., IP65), or extended tap ranges (±4×2.5%).

　　V. Industry Trends and Maintenance Guidelines

　　1. Industry Trends

　　Smart Integration: Some models feature RS485 communication interfaces for remote monitoring.

　　Energy Efficiency: Secondary energy efficiency (Grade II) models are replacing tertiary efficiency (Grade III) units, accounting for over 60% of the market.

　　Customization: Niche brands offer faster responses for non-standard capacity and voltage customization.

　　2. Maintenance Guidelines

　　Regular Inspections: Check insulation resistance, oil level, and tap changer contact status every six months.

　　Oil Analysis: Annually sample oil for dielectric strength and moisture content testing; replace or filter if standards are exceeded.

　　Load Monitoring: Avoid prolonged overloading (short-term overload ≤1.5× rated capacity for ≤2 hours).