Dry-type Transformer Commercial Project SC(B)11 model

The SC(B) series is dry-type transformers are characterized by their safety, flame retardancy, fire resistance, and lack of pollution, allowing for direct installation at load centers. They are maintenance-free, easy to install, and offer low overall operating costs. With excellent moisture resistance, they can operate normally in 100% humidity and can be put back into service after a shutdown without the need for pre-drying. These transformers feature low losses, minimal partial discharge, low noise levels, and superior heat dissipation; under forced-air cooling, they can operate at 150% of their rated load. They are also equipped with a comprehensive temperature protection and control system, ensuring reliable and safe operation.

• Infrastructure: Subways, airports, railway stations, tunnels, and underground power stations.
• Commercial: High-rise buildings, business centers, hospitals, and hotels.
• Industrial: Test chambers and combined transformer substations.

Our transformers feature a sophisticated monitoring system to ensure stable operation under all load conditions:

• Real-time Monitoring: PTC temperature sensors are installed at the hottest points (top of the low-voltage windings) to provide precise measurement.
• Automatic Protection: The controller triggers an Alarm Signal during overloads and an Automatic Trip if temperatures exceed safety thresholds.
• Smart Cooling: Automatically manages cooling fans based on winding temperatures to optimize energy efficiency.
• Remote Display: Supports remote temperature display and control (up to 20m for control; up to 100m with compensation conductors).

We provide high-quality protection options tailored to your installation environment:

• Material Options: Durable Stainless Steel or Aluminum Alloy.
• IP20 Rating: Prevents entry of solid foreign objects (>12mm), providing essential safety for indoor settings.
• IP23 Rating: Features rain-proof protection (up to 60° angle), making it suitable for specialized outdoor operations.

Note: Using an IP23 enclosure may affect cooling capacity by 5% to 10% depending on the unit size.

To provide you with an accurate quotation, please provide the following technical specifications when placing an order or inquiry:

Every transformer manufactured at our facility undergoes a series of rigorous routine tests to ensure full compliance with international standards and guaranteed performance before dispatch:

1. Voltage Ratio Measurement & Vector Group Verification: Ensures the transformation ratio and phase relationship meet design specifications.

2. Winding Resistance Measurement: Checks the integrity of the conductive path and connections.

3. Insulation Resistance Test: Verifies the dielectric strength and quality of the insulation system.

4. Separate-Source Voltage Withstand Test (Applied Voltage Test): Tests the insulation between windings and to the earth.

5. Induced Overvoltage Withstand Test: Validates the turn-to-turn and layer-to-layer insulation integrity.

6. No-load Loss & No-load Current Measurement: Evaluates core performance and energy efficiency at zero load.

7. Short-circuit Impedance & Load Loss Measurement: Assesses efficiency and performance under rated load conditions.

8. Partial Discharge (PD) Measurement: A critical test for dry-type transformers to ensure long-term insulation reliability and detect any internal defects.

• Fire Resistant: Self-extinguishing epoxy resin ensures high safety in densely populated areas.
• Maintenance-Free: No oil leakage or periodic oil testing required.
• High Reliability: Manufactured in our 2026 modernized facility with CE certification and rigorous vacuum casting processes.
• Export-Grade Delivery: Every unit is secured with high-standard packaging for global shipping.