Dry Type Transformer

A dry-type transformer is a device that converts electrical energy from one voltage level to another. It does not require oil for cooling; instead, it uses special insulating materials to isolate electrical current and prevent arcing. These transformers are widely used in both indoor and outdoor power systems, especially in high-altitude or flammable environments.

Features and Applications

1. No maintenance or upkeep required: Since dry-type transformers do not use insulating oil, there is no need for oil replacement or insulation system maintenance.

2. Long service life: Thanks to their oil-free environment, dry-type transformers can operate for a longer period with an extended lifespan.

3. Safer operation: The absence of oil eliminates risks of oil leakage or fire hazards, making them a safer choice.

4. Environmentally friendly: Dry-type transformers do not generate oil waste or contaminate soil and water sources, making them a more eco-friendly option.

5. High reliability: These transformers use special insulating materials to insulate electrical current and prevent arcing, ensuring higher reliability.

Usage Environment

Altitude: Not exceeding 2,500 meters;

‌Operating Temperature: 0-40°C, Relative Humidity < 70%;

Avoid exposure to rainwater, moisture, high temperatures, extreme heat, or direct sunlight. The heat dissipation and ventilation holes must maintain a distance of at least 40 cm from surrounding objects;

‌Do not operate in environments with corrosive liquids, gases, excessive dust, conductive fibers, or metal shavings;

Avoid operation in vibrating environments or areas with electromagnetic interference;

Prevent long-term inverted storage and transportation, and avoid severe impacts.

Technical Parameter

1. Operating Frequency: 50/60 Hz;

‌2. No-load Current: < 4%;

3. Withstand Voltage: 20,000V/min without breakdown; Test Equipment: YZ1802 Dielectric Withstand Tester (20mA);

‌4. Insulation Class: F (special classes can be customized);

5. Insulation Resistance: ≥2MΩ; Test Equipment: ZC25B-4 Megohmmeter (≤1000V);

6. Connection Modes: Y/Y, △/Y₀, Y₀/△, autotransformer (optional);

7. Allowable Coil Temperature Rise: 100K;

8. Cooling Method: Natural air cooling or temperature-controlled automatic heat dissipation;

9. Noise Level: ≤30 dB.