Cross Flow Cooling Blower for Dry Type Transformers
01. PRODUCT OVERVIEW
This series of cross-flow cooling blowers adopts advanced foreign cross-flow structure design, equipped with micro-motors, and is widely used in dry-type transformers, electric control cabinets, and other equipment. It significantly improves the overload operation capacity of transformers and related products.
The GF series blowers produced by our factory are highly trusted by dry-type transformer manufacturers across the country, with complete specifications suitable for 30kVA–20000kVA dry-type transformers. Each transformer can be equipped with 4 to 6 GF blowers, and there are three main types:
Side-blowing fan
Top-blowing fan
Three-proof fan (TH)
All GF series blowers are manufactured using imported SUS304 mirror stainless steel plates and high-strength aluminum alloy plates, equipped with renowned brand motors from professional manufacturers and imported NSK/NTN high-quality bearings. They are sturdy, durable, and reliable with excellent performance. Key advantages include:
Low energy consumption, large air volume, and excellent cooling efficiency
Rational structure, elegant appearance, easy installation, and robust reliability
Low vibration, low noise, dynamic balance, and long service life
02. WORKING PRINCIPLE
When the GF series cooling blower is used with a dry-type transformer, the fans are installed on both sides of the coil, blowing cold air directly into the high-voltage and low-voltage cooling air ducts of the transformer. This effectively dissipates heat, ensuring the normal operation and extending the service life of the dry-type transformer. Functions such as fan start/stop and over-temperature alarm are controlled by the temperature controller.
03. NORMAL USAGE CONDITIONS
Ambient temperature: -5°C to +40°C
Relative air humidity: ≤ 95% (at 25°C)
Altitude: ≤ 1000m
No corrosive or explosive gases in the surrounding environment
★ If operating conditions exceed the above parameters, please negotiate with the manufacturer for customized solutions.
04. INSTALLATION INSTRUCTIONS
Before installation, check the casing for foreign objects and ensure all connections are firm and secure.
The fixed bracket of the fan must have sufficient rigidity to avoid vibration during operation.
Ensure the power supply voltage and steering direction match the rated values on the motor nameplate. Multiple fans on the same transformer can be connected individually or in parallel to the power supply or controller. Larger units should use intermediate relay control. For single-phase fans, the steering is pre-adjusted at the factory and can be used directly upon power-up. Three-phase fans must confirm the correct rotation direction before use.
Verify the impeller rotation direction matches the marked direction. If inconsistent, swap any two phases of the three-phase power supply to correct the rotation.
05. MAINTENANCE & OPERATION GUIDELINES
Before use, test the insulation resistance, which must exceed 2 MΩ. If the fan is hot or humid, the minimum insulation resistance is 0.5 MΩ.
Before starting the fan, inspect the unit for physical damage, check all connections for reliability, and ensure the impeller rotates freely without obstruction.
Regularly clean dust and debris inside the fan to maintain optimal air volume and cooling efficiency.
💡 Why Choose Weshare's GF Series Cooling Blowers?
Industry-Proven Reliability: Built with SUS304 stainless steel, premium bearings, and renowned motors for long-lasting performance in harsh industrial environments.
Efficiency Boost: Improves transformer overload capacity by 40–50%, extending equipment service life and reducing maintenance costs.
Flexible Configurations: Three design variants (side-blow, top-blow, three-proof) to suit different transformer installation scenarios and environmental conditions.
Full Compliance: Designed and tested to meet international safety standards, ensuring compatibility with all major dry-type transformer models.