Dry-type Transformers

dry-type transformers

Dry-type transformers are high-performance electrical equipment that utilize advanced insulation technology, require no oil immersion, and are safe and environmentally friendly. They are fireproof and explosion-proof, ensuring stable and reliable operation. Compared to oil-immersed transformers, dry-type transformers are more adaptable to various environments and offer lower maintenance costs. They are widely used in high-rise petrochemical plants, mining, construction, commercial buildings, and factories. They efficiently convert and distribute electrical energy, providing continuous and stable power for our lives and production, making them an indispensable component of modern power systems.

Our company manufactures dry-type transformers, including the SC(B)10 and SC(B)11 series, which meet performance standards and offer reliable operation.They are energy-efficient, moisture-proof, dust-proof, and low-noise.

We offer aluminum alloy or stainless steel enclosures, with IP20, IP43, or IP23 protection levels without an enclosure, tailored to customer needs. These are particularly suitable for installation in locations with strict fire protection requirements.

SDKC adheres to high standards and employs the highest standards in the use of key hardware and software in production, ensuring that all product quality indicators meet advanced standards. Complete drawings and technical documentation, along with comprehensive testing equipment, provide a solid foundation for producing high-quality products.

Safety and reliability

1. Fireproof and Explosion-Proof: No flammable insulating oil is used, fundamentally eliminating the risk of fire and explosion, meeting the highest fire safety standards.

2. Environmentally Friendly and Non-Toxic: No oil is used, resulting in leak-proof, pollution-free, and harmless to the environment and human health.

3. Strong Overload Resistance: Utilizing Class F or H insulation materials or above, these products allow for higher temperature rises, offer strong overload capacity, high mechanical strength, and excellent short-term overload performance.

4. Stable Insulation Performance: Low operating temperature rise, slow insulation aging, and a long transformer lifespan. The windings are cast in epoxy resin or treated with a special impregnation treatment, providing moisture and dust resistance, stable insulation performance, and resistance to harsh environments.

Electrical and Performance

1. Low Loss, High Efficiency: Utilizing high-quality silicon steel laminations and advanced processes, the product achieves low no-load and load losses, resulting in significant energy savings.

2. Low-Noise Operation: The core utilizes a stepped lamination process and fastening technology, effectively reducing operating noise caused by magnetostriction.

3. Strong Short-Circuit Resistance: The robust structural design and cured windings withstand strong short-circuit current surges.

4. Excellent Thermal Stability: Excellent heat dissipation and a long thermal life ensure long-term operational reliability.

Installation and Maintenance

1. Maintenance-free: No oil level or quality monitoring, filtering, or replacement of insulating oil is required during operation, significantly reducing maintenance workload and costs.

2. Easy installation and small footprint: The compact design and relatively light weight eliminate the need for additional oil pits and firefighting equipment, allowing for flexible installation close to the load center.

3. High protection rating: The housing is available in a variety of protection levels (such as IP23 and IP43), effectively preventing the intrusion of foreign matter and moisture.

Economy and applicability

1. Long lifespan: Designed to last 30-40 years, the system can last even longer with proper maintenance.

2. Wide application range: Particularly suitable for indoor locations with stringent safety requirements, such as high-rise buildings, subways, airports, hospitals, data centers, and chemical mines.

1. Core: Made of laminated silicon steel sheets, it forms the magnetic circuit of the transformer, guiding the magnetic flux.

2. Windings: These are divided into high-voltage and low-voltage windings, wound around the core to convert and transmit electrical energy.

3. Insulator: Placed between the high-voltage and low-voltage coils, it provides electrical insulation and ensures safe operation of the transformer.

4. Spacers: Support and restrain the coils, maintaining their stability and shape.

5. Fasteners: Connect and secure the various parts of the transformer, preventing loosening.

Part of the performance parameters: 3 phases, frequency: 50HZ, insulation heat resistance grade: F class, average winding temperature rise: ≤100K, synchronous discharge capacity: less than 5Pc

A,Epoxy resin pouring

 

It is cast in one piece using epoxy resin, which is fireproof, explosion-proof, moisture-proof, safe and durable, and does not pollute the environment.

B,New high-quality iron core

 

The core is made of brand new high-quality silicon steel sheets, which has low loss, low operating noise and is more energy-efficient.

C,Coil internal and external heat dissipation

 

The heat dissipation inside and outside the coil is good, the circulating temperature is stable, the transformer temperature is reduced, and the transformer overload capacity is enhanced.

D,Copper foil winding

 

Good electrical conductivity, stable operation, enhanced overload capacity, low line loss, not easy to oxidize, and extended transformer life.

1. Installation Altitude: No more than 2000 meters above sea level

2. Ambient Temperature: -30°C to +40°C

3. Installation Environment: An inclination angle of less than 3°, free from visible dirt, corrosive gases, or flammable gases

4. Note: If operating conditions exceed normal limits, please contact our technical department.

Q: Can your products be customized?

A: Considering the differences in voltage, frequency, and other characteristics of transformers across different countries and regions, our products can be customized to your specifications.

Q: Can you provide technical support for product installation?

A: Yes, of course. We have a professional technical team dedicated to providing customers with product installation and application guidance.

Q: What are the key parameters for dry-type transformer commissioning?

A: 1. Insulation resistance safety threshold before commissioning: no less than 70% of the factory value. Maintain proper insulation and tighten the transformer body to prevent short circuits and partial discharge. Ensure the temperature control system is functional to ensure effective overheating protection.

2. During the electrical test, check the DC resistance to verify circuit integrity: phase-to-phase difference ≤ 2%. Check the voltage ratio and group to ensure proper transformer function: error ≤ ±0.5%.

3. During the no-load test run, check the no-load current and sound level to verify the magnetic circuit and internal condition: current is stable and <2% of rated current, and the sound level is uniform. Check the phase voltage to verify system balance. Also, check temperature rise and vibration to provide a preliminary assessment of operational stability.

Q: Does a dry-type transformer require maintenance? How should it be maintained?

A: Yes. Keep it clean, prevent overheating, and ensure reliable connections. 1. Daily Inspection: Listen for sounds, observe conditions, and check the environment.

2. Regular Maintenance (performed during power outages): Clean and remove dust, inspect fasteners, check insulation, and calibrate the temperature control system.

Q: What tests are performed on dry-type transformers before shipment?

A: Winding DC resistance measurement, applied voltage withstand test, induced voltage withstand test, no-load loss and no-load current measurement, partial discharge measurement, temperature rise test, and lightning impulse voltage test.

Q: Can I get a product warranty?

A: Yes, each product comes with a one-year warranty provided the customer uses the product correctly.

Q: When can I get a price?

A: We typically provide a quote within 24 hours of receiving your inquiry.

 

 

Conclusion：

SDKC is an experienced transformer manufacturer established in 2023, designing and producing a wide range of cast resin dry-type transformers for different applications, including rectifier transformers, marine transformers, petroleum transformers, rectifier traction transformers, electrified railway station transformers, rectifier excitation transformers, etc.

Hot Tags: dry-type transformers, China dry-type transformers manufacturers, suppliers, factory, control panel transformer, control voltage transformer, electronic variac, external isolation transformer, tech lighting transformer, ultra isolation transformer