Durable Dry-Type Transformer for Efficient Power Distribution in Industries

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting
• Phase: Three
• Model NO.: S11
• Core: Core-type Transformer
• Cooling Method: Dry-type Transformer
• Winding Type: Separated Winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC
• Usage: Single-phase Transformer, Rectifier Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: OD
• OEM: Avaliable
• Transport Package: Export Wooden Case Packing
• Specification: 2400*800*1900
• Trademark: GANGKONG
• Origin: China
• HS Code: 8504210000
• Production Capacity: 35000pieces/Years

Product Description

DRY TYPE TRANSFORMER: Unleashing a new era of power distribution, our dry-type transformer stands as a beacon of durability and efficiency, meticulously designed to cater to the ever-evolving needs of modern industries.

SPECIFICATION: Discover the sophisticated specifications of our cutting-edge dry-type transformer, crafted to ensure optimal performance and unrivaled reliability in diverse industrial applications.

1. Product Description

The SCB series epoxy resin dry-type transformers are epitomes of safety, reliability, energy efficiency, and ease of maintenance. From the perspectives of cost-effectiveness, security, and adaptability to diverse environments, these transformers offer a versatile solution suitable for numerous applications.
Our advanced product design, meticulous manufacturing process, and comprehensive testing ensure excellence. The HV winding uses 99.9% pure oxygen-free copper conductor, combined with epoxy network cloth and resin, while the LV winding implements oxygen-free copper foil. The iron core is crafted from premium, high-permeability cold-rolled silicon steel sheets, with a unique binding method, resulting in remarkable mechanical and electrical strength, along with exceptional heat dissipation. This product exhibits minimal local discharge, ensures high reliability, boasts an extended operational lifespan, remains resistant to moisture absorption, and offers flame-retardant, explosion-proof, pollution-free, low-loss performance. Its lightweight, automatic temperature control, space-saving, and cost-efficient upkeep are just some of the benefits, making it ideal for integration into theheart of urban development projects. It's perfectly suited for urban construction, high-rise buildings, commercial hubs, residential complexes, entertainment and sports venues, healthcare facilities, tourist attractions, airports, ports, railway stations, subways, highway tunnels, and civil defense installations. It also finds applications in petrochemical and electrical enterprises, the food industry, sewage treatment, offshore oil platforms, mining sites, and more.




2. The Use of Environmental and Working Conditions
2.1 The installation site should not exceed an elevation of 1000 meters, with a maximum ambient temperature of40°C (provisions are available for special designs if these conditions are surpassed).
2.2 For optimal operation, the relative humidity is maintained at 100%, within a temperature range of +40ºC to -25ºC (on-load switch and temperature controller are essential at -25ºC).
2.3 Typically installed indoors, the site should be clean, devoid of electric dust and corrosive gases, and should have efficient ventilation. In poorly ventilated areas like basements, forced ventilation is necessary, requiring approximately 3-4m³/min of airflow per1kW of loss (no-load and load losses combined).
2.4 Proper installation requires maintaining an 800mm clearance from walls and other obstructions.Additionally, a 300mm gap should be kept between adjacent transformers. This distance can be modified in limited installation spaces like distribution boxes.
2.5 Generally, transformers can be directly installed on-site and are ready for immediate operation upon installation and inspection. For shock-proof and specialized needs, the transformer should be secured with bolts and nuts to the foundation, ensuring stability and security.

3. Main Specifications and Technical Parameters
3.1 Rated Frequency:50Hz
3.2 Cooling Method: AN or as specified by the user.
3.3 Shell Protection Level: IP20 or customized per user request.
3.4 Connection Group Label: DynIl or according to customer specifications.
3.5 Transformer Phase Sequence: Viewed from left to right on the high-voltage side, with the sequence being ABC on the high side and abc on the low side.
3.6 Winding Insulation Class: F Class.
3.7 Insulation Level
Our state-of-the-art transformers are engineered to endure the toughest conditions, offering exceptional voltage tolerance that ensures seamless performance. Specifically, the 10kV product boasts a power frequency withstand voltage of 35kV and an impressive impact withstand voltage of 75kV. When it comes to the 20kV variant, it features a robust power frequency withstand voltage of 55kV and an outstanding impact withstand voltage of 125kV. Lastly, the 35kV product delivers a remarkable power frequency withstand voltage of 70kV and a formidable impact withstand voltage of 170kV.
3.8 Temperature Rise Limit:
Experience optimal performance with our transformers, designed with an advanced insulation system temperature of 155°C, ensuring reliability and durability. The maximum temperature rise is capped at a safe and efficient 100K, providing peace of mind and consistent functionality.









4.

Product Parameters

SCB
Voltage class kv
Capacity KVA
Performance level code
The low-voltage coil is crafted with precision, featuring copper foil wound and fortified by epoxy resin pouring, ensuring remarkable durability and performance stability.
three-phase


5. Product System Description
5.1 Temperature Display and Temperature Control System
Tailored to user requirements, this product is equipped with a sophisticated temperature display and control system that performs seamlessly. Its capabilities include: (1) Issuing an overload alarm signal while automatically displaying real-time temperature readings.
(2) Activating or deactivating the fan and disconnecting the power supply when the internal coil temperature surpasses the preset threshold, thereby safeguarding transformer integrity.
5.2 Advanced Cooling System
The efficient cooling method utilized is air natural cooling (AN), ensuring the output capacity remains at a full 100%; leveraging forced air circulation cooling (AF) allows for an impressive long-term overload of 25% and a short-term overload tolerance of up to 50%, optimizing performance.
5.3 Comprehensive Protection Level
This product's standard protection level is IPO0, signifying the absence of an exterior shell, thus necessitating indoor placement; It can be equipped with a protective shell,if desired by the user, with IP20 or IP23 options (consideration of reduced transformer capacity is advised at higher protection levels).
Note: The IP20 enclosure effectively blocks solid objects over 12mm, providing a robust safety barrier for electrical components. Enhancing to IP23 protection, it prevents water droplets from entering at angles up to 60°, ensuring superior environmental defense.


6. Product Packaging and Transportation
6.1 Products are available in two configurations: open type (lacking protective cover) and safeguarded type (featuring protective shell), suitable for railway, waterway, and highway transportation. If necessary, components can be partially disassembled for transport (e.g., on-load tap changer, temperature controller, air cooling device, protective cover, etc., require separate packaging) or fully enclosed in a shipping crate. Use cranes, winches, or other suitable equipment to load and unload the products efficiently.
6.2 During shipment, ensure the product is covered with waterproof cloth to shield against rainwater.
6.3 When lifting boxed products, secure ropes to the bottom corners of the packing boxes. Lift the packaged products 100mm-150mm from the ground with a specialized lifting device, ensuring no anomalies before proceeding.
6.4 Throughout transport, ensure the route's incline does not exceed 15° to distribute weight evenly across the vehicle. The product's center of gravity should align with the vehicle's vertical center during loading. To avert displacement or toppling during transit, align the product's long axis with the direction of travel and firmly secure it to the transport vehicle.
6.5 When loading and unloading vehicles without cranes, it is imperative to adhere to stringent safety technical requirements. Ensure the lifting capacity is meticulously verified to align with the product's transportation weight, safeguarding both the product and personnel.
6.6 For optimal transportation stability, users must detach the roller from the car's bottom. Reattach it before installation at the destination to maintain product stability. If using a trolley, adjust the roller axle to a 90° direction, allowing for seamless horizontal or vertical movement.
6.7 Upon arrival at the destination, minimize the time the product remains in the transportation state, especially outdoors. Prioritize parking the product in a covered, dry, and ventilated area. Implement protective measures to shield the product from mechanical damage and contamination.


7. Inspection and acceptance
7.1 Upon receipt, the user should promptly open the shell to conduct a thorough inspection and acceptance. Verify the completeness of the packing list items and inspect for potential transportation damage to the transformer. Ensure the product parts are intact, fasteners are secure, insulation is unharmed, and coil surfaces are clean.
7.2 Confirm that the product nameplate data aligns perfectly with the user's specified product specifications, including capacity, voltage level, connection group label, and short-circuit impedance.
7.3 Ensure that all delivery technical documents are complete and accurate.
7.4 If the product is not immediately deployed post-unpacking, it should be carefully repackaged and stored indoors securely, preventing any potential damage or theft.
7.5 For a seamless transformer acceptance process, ensure the handover document is signed in coordination with the transportation department, highlighting any issues discovered during the inspection.

8. Appearance inspection before installation
8.1 After unpacking, remove any protective devices and meticulously inspect the exterior. Focus on the mechanical integrity of the coil and core, ensuring proper compression and bolt tightness. bolts outside the connection.
8.2 Post-inspection, systematically tighten all fasteners and coil and iron core pressing parts, ensuring no loose elements remain.
8.3 Follow the factory technical conditions and complete assembly instructions to disassemble and reinstall the transformer body precisely.
8.4 For optimal cleanliness, use dry compressed air or clean rags to eliminate dust and dirt from the product.
8.5 If stored long-term, and water beads or significant condensation appear, conduct a thorough dry treatment until the coil insulation resistance is deemed adequate.

9. Inspection and test before operation
9.1 Accurately measure the DC resistance of both high and low voltage winding, ensuring data consistency with the factory test certificate.
9.2 Rigorously inspect the iron core grounding, typically located at the ends of the iron yoke, to confirm its reliability and the absence of other body laps or multiple grounding points.
9.3 Conduct an insulation resistance test
at varying Voltage levels: 10kv 20kv 35kv
between HV coil to LV coil. Insulation Resistance: Ensure a steadfast ≥500 MΩ for high-performance reliability. Maintain superior insulation with a commendable ≥ 800 MΩ. Achieve optimum insulation standards with a robust ≥ 1000 MΩ.
HV Coil to Ground: A critical parameter for operational excellence. Ensure top-notch safety with an insulation resistance of ≥500 MΩ. Uphold electrical integrity with a steadfast ≥800 MΩ. Exceed insulation expectations with an impressive ≥1000 MΩ.
LV to Ground: Essential for maintaining system integrity. Core insulation must be at least ≥50MΩ to ensure optimal performance. Maintain core integrity with a minimum of ≥50MΩ. Guarantee reliable performance with a core resistance of ≥50MΩ.
Core to Ground: Vital for safety and efficiency. Ground Safeguard your operations with a core-to-ground resistance of ≥5MΩ. Ensure operational dependability with a resistance of ≥5MΩ. Commit to safety with a core-to-ground insulation of ≥5MΩ.
9.4 During the external construction frequency voltage resistance test, exercise utmost care to ensure theremoval of the temperature control probe wire from the coil to prevent potential breakdowns in the thermostat's internal components.
9.5 Verify that the protection system operates normally, maintaining system security.
9.6 Installation must ensure a minimum clearance of 800mm from walls and other objects, promoting efficient heat dissipation. Upon installation, connect the ground bolt to the general ground loop for reliable grounding.

10, Network operation
10.1 Ensure all attached protection devices and monitoring systems are properly grounded and certified. Initially operate the transformer under no-load conditions, performing three shock closings to meticulously check and adjust the protection system.
10.2 Post-delivery, connect the voltage regulation tap at the HV side as per the rated position. For voltage adjustments during operation, refer to the product nameplate and the tapping voltage. Ensure changes are made only when the transformer power supply is cut off to maintain safety. HV side is connected according to the rated position. The voltage adjustment is required during operation, and the corresponding tapping connection can be carried out according to the tapping voltage indicated on the product name plate (when there is no excitation voltage regulation), ensuring voltage changes are made only in the case of cutting off the transformer power supply.
10.3 The transformer is equipped with the advanced BWDK series temperature controller. It features a temperature measuring element positioned at the upper end of the low-voltage coil, which efficiently detects and displays the working temperature of each three-phase coil. On reaching the set temperature, the system can autonomously activate or deactivate the fan, raise alarms, or initiate tripping, with user-adjustable settings as per the thermostat manual.

11. Maintenance
Following a period of operation, perform critical checks and maintenance on the dry transformer, ensuring optimal functionality.
11.1 Conduct thorough inspections of the coil, iron core, wire sealing, tap-connecting terminals, and fasteners across various sections. Check for any damage, deformation, loosening, discoloration, overheating traces, or corrosion. Immediate corrective measures should be taken in case of abnormalities.
11.2 Meticulously dust off the transformer. Use a dry cloth for all accessible parts, avoiding volatile cleaners. For hard-to-reach areas within the iron core and coil, employ compressed air for cleaning.
11.3 For transformers equipped with fans, ensure dust and soil are meticulously removed. Check the fan blade for deformation, ensuring the fan bearing is well-lubricated, supplementing or replacing grease as necessary.
11.4 Before resuming operations of the transformer following inspection and maintenance, it is imperative to meticulously inspect for any metallic or non-metallic foreign objects that may have inadvertently fallen into the coil, iron core, or insulation areas. Ensuring the absence of such debris is crucial for the seamless and safe functionality of the equipment.


12. Security matters
12.1 The power supply to the temperature controller and fan must be routed through the switch panel, never directly linked to the transformer. 12.2 Prior to activation, a thorough evaluation of the grounding system in the transformer room is essential to guarantee operational safety.
12.3 To ensure electrical safety, the transformer shell's door must remain securely closed at all times.
12.4 Implement measures to prevent the entry of small animals into the transformer room, as this can avert potential accidents and ensure uninterrupted operations.
12.5 Personnel entering the transformer room are required to wear insulating footwear and maintain a safe distance from live components; under no circumstances should they touch the transformer.
12.6 An abrupt increase in transformer noise should prompt an immediate review of transformer load and grid voltage. Additionally, closely monitor any temperature variations and promptly consult with qualified personnel if necessary.
12.7 Conduct thorough inspections of the transformer every 3 to 5 years, incorporating preventive tests when applicable to maintain optimal performance and safety.
12.8 Only qualified professionals should undertake the installation, testing, operation, and maintenance of transformers to ensure adherence to safety standards and operational efficiency.

Certifications

FAQ

Are you the manufacturer or trader?

GANG KONG is a leading & professional manufacturer located in Zhejiangprovince of China.

What is your main markets?

Our main market is in home & a half in South-East Asia, Middle East,West-AfricaEast-European countries & Some South America..etc

What is your delivery & after-sales serive?

The delivery is according to order gty, normally for containers order we need 1month. Per each month 20 containers (20'ft or 40'ft)are no problem for us . Wecan answer user's question and solve their problem in 24 hrs per each day andgive full technical support in time to all of our products.

Do you accept OEM and ODM?

Yes. Our R & D team owns latest technology ,can develop & produce products ascustomers' drawing & under their brand

What is your payment terms?

a. 30% T/T in advance as deposit ,balanced against the shipping documents

b. irrevocable L/C at sight for order which amount is over 100 thousand USD

C. for old business partner,we can negociate together for other special terms

If i want to visit you ,how to do ?

Our company is located in Yueqing city of Zhejiang province China,which is about40 minutes by car to Wenzhou air port & 30 minutes from Yueqing train station.About 1 hrs by air from Shanghai international airport and 1 hrs from Ningbo bytrain. lf you need invitation letter before come to China,we can give it to you.