OEM Available Compact Design Transformer for Effective Power Solutions

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting
• Phase: Three
• Model NO.: S11
• 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

SPECIFICATION

1. Product Description

The series of SCB epoxy resin dry type transformers boasts a plethora of prestigious benefits: they are renowned for their unmatched safety, unwavering reliability, energy efficiency, and seamless maintenance. From the perspectives of economic viability, safety assurance, and adaptability to various environments, this series stands as a paragon of versatility. This series of transformers showcases an impressive range of applications, making it an ideal choice across multiple industries.
Crafted with cutting-edge design, meticulous processes, and rigorous testing, the product features a HV winding composed of 99.9% pure oxygen-free copper conductor, epoxy network cloth, and resin, while the LV winding utilizes 99.9% oxygen-free copper foil. The iron core, made of premium high permeability cold-rolled silicon steel sheet, is bound with a specialized technique. As a result, this transformer exhibits extraordinary mechanical and electrical strength, coupled with exceptional heat dissipation capabilities. Additionally, it features minimal local discharge, offering high reliability and an extended operational lifespan, while being resistant to moisture absorption, flame retardant, explosion-proof, environmentally friendly, with low power loss, lightweight, and equipped with automatic temperature control. Its compact design saves installation space, reduces maintenance costs, and enhances energy efficiency, allowing it to seamlessly integrate into the most demanding environments.This transformer is perfectly suited for urban infrastructure, towering skyscrapers, bustling commercial hubs, tranquil residential zones, lively entertainment and sports venues, vital healthcare institutions, captivating tourist attractions, expansive airports, strategic ports, efficient railway stations, convenient subways, expansive highway tunnels, and essential civil defense structures. It serves petrochemical enterprises, electrical facilities, the food sector, sewage treatment plants, offshore oil rigs, mines, and many other crucial locations.




2. The Ideal Environmental and Operating Conditions
2.1 To ensure optimal performance, the installation site should not be situated at an elevation exceeding 1000 meters, and the ambient temperature should remain withina maximum of 40°C. Should these parameters be surpassed, a tailored design is available to meet your unique requirements.
2.2 For the operating environment, a relative humidity of up to 100% is permissible, with a temperature range spanning from +40ºC to -25ºC (the latter necessitates an on-load switch and temperature controller).
2.3 Generally intended for indoor use, the installation area must be pristine and devoid of electric dust or corrosive gases, with ample ventilation. Should the location be a basement or any space with limited ventilation, forced ventilation measures should be implemented. The product requires approximately 3-4 m³/min of ventilationper unit kilowatt loss (encompassing both no-load and load losses).
2.4 Proper installation dictates that the product should maintain a clearance of 800mm from the wall or any obstructions,with a minimum 300mm gap between adjacent transformers. Adjustments may be made if the distribution box and installation space are constrained.
2.5 Typically, the transformer can be directly positioned at the installation site and is ready for operation post-installation and inspection. For scenarios requiring shock-proofing or other special conditions, the transformer should be anchored with bolts, ensuring stability through both bolts and nuts.

3. Main Specifications and Technical Parameters
3.1 Rated frequency:50Hz, ensuring optimal performance across standard applications.
3.2 Cooling method: AN or tailored to customer needs, providing flexibility in operational environments.
3.3 Shell protection level: IP20, with options to customize as per user specifications.
3.4 Connection Group label: DynIl, adaptable to user requirements.
3.5 Transformer phase sequence: When observed from the high voltage side, the phase sequence is ABC on the high voltage side and abc on the low voltage side, ensuring clarity and precision in connectivity.
3.6 Winding insulation class: F class, offering robust insulation capabilities.
3.7 Insulation Level
Discover the power of our OEM Available Compact Design Transformer, meticulously engineered by Zhejiang Gangkong Electric Co., Ltd to endure rigorous conditions. The 10kv model boasts a power frequency withstand voltage of 35kv, complemented by an impact withstand voltage of 75kv. Elevate your energy systems with our 20kv model, offering a power frequency withstand voltage of 55kv and an exceptional impact withstand voltage of 125kv. For demanding applications, our 35kv model provides a robust power frequency withstand voltage of 70kv, alongside a formidable impact withstand voltage of 170kv.
3.8 Temperature Rise Limit: Masterfully designed to ensure optimal performance and longevity,
Our insulation system guarantees superb heat management with a maximum temperature rating of 155°C and an impressive peak temperature rise limit of 100k, ensuring reliability under demanding conditions.









4.

Product Parameters

SCB
Voltage Class (kV)
Capacity (KVA)
Performance Level Code
The state-of-the-art low-voltage coil features copper foil winding with epoxy resin pouring, ensuring outstanding durability and reliability.
Three-Phase


5. Comprehensive Product System Description
5.1 Advanced Temperature Display and Control System
Tailored to meet user requirements, this exceptional product is equipped with a sophisticated temperature display and control system. Its functionalities include: (1) Sending an overload alarm signal while automatically displaying the current temperature for proactive monitoring.
(2) Should the coil's internal temperature surpass the predefined limit set by the signal thermometer, the system smartly initiates and halts the fan, cuts off the power supply, and disconnects the transformer to ensure safety.
5.2 Innovative Cooling System
The highly efficient cooling method employed is Natural Air Cooling (AN), allowing the output capacity to be maintained at 100%.; Alternatively, forced air circulation cooling (AF) permits a long-term overload of up to 25% and short-term overload at an impressive 50%.
5.3 Robust Protection Level
In its standard configuration, this product boasts a protection level of IP00, with the transformer not featuring an external shell, making it suitable for indoor use only. However, should you require it for indoor use, it can be optionally equipped with an innovative shell,if requested by the user, and be enhanced to IP20 or IP23. Note, when opting for higher transformer protection levels, consider operating the transformer at reduced capacity.
Remark: The IP20 casing effectively blocks solid objects over 12mm, offering essential protection for live components. When upgraded to IP23, the shell also prevents water droplets from entering at a 60° vertical angle.


6. Secure Product Packaging and Transportation
6.1 Our products are categorized into open types (without protective covers) and protected types (with a robust protective shell). These are generally transported via railway, waterway, or highway. If circumstances deem it necessary, partial disassembly may be performed for transportation (e.g., on-load tap changers, temperature controllers, air cooling devices, protective covers, etc., which need to be packed separately) or transported entirely within a sturdy packing box. Employ cranes, winches, or other suitable machinery for lifting and unloading with ease.
6.2 During transportation, it's imperative to shield the product with a waterproof cloth to safeguard against rain.
6.3 When hoisting products with packing boxes, always attach ropes to the sleepers located at the box's bottom four corners. The packaged items can be slightly lifted (100mm-150mm) from the ground using a specialized lifting device, proceeding with the lift once stability is assured.
6.4 While in transit, ensure the transportation path does not exceed a 15° gradient for even weight distribution. The product's center of gravity should align vertically with the vehicle's center when loading. Moreover, to prevent any shifting or toppling during transit, align the product's long axis with the transportation direction, and secure it tightly to the transport vehicle.
6.5 When loading and unloading vehicles without cranes, it is essential to adhere to safety technical requirements. Ensure the lifting capacity matches the transportation weight of the product. This practice is crucial for maintaining safety and preserving the integrity of our OEM Available Compact Design Transformer for Effective Power Solutions during transit.
6.6 For optimal transport stability, if the product is equipped with a vehicle, remove the rollers at the car's bottom during transit. This ensures safe conveyance. Before installation at the destination, reset the rollers. For products with a trolley, you can adjust the roller axle at both frame ends to a 90° direction, allowing for effortless horizontal or vertical movement.
6.7 Once our product arrives at its destination, reduce the parking time in the transportation state as much as possible, especially if exposed to the elements. Before installation, ideally park it in a covered, dry, and ventilated area. Protect the transformer from mechanical injury and pollution to preserve its premium quality and performance.


7. Inspection and acceptance
7.1 Upon receiving the state-of-the-art product, promptly open the shell for thorough inspection and acceptance. Confirm if all items listed in the packing list are intact. Ensure the transformer remains undamaged from transportation, without any part displacement or damage. Verify that fasteners are secure, insulation is intact, and the coil surface is pristine.
7.2 Scrutinize the product nameplate data to confirm it aligns with the user's predetermined product specifications, capacity, voltage level, connection group label, short-circuit impedance, etc., ensuring it matches your high standards.
7.3 Confirm that all delivery technical documents are complete and comprehensive for your peace of mind.
7.4 If the product is not immediately commissioned post-unpacking, repack and store it safely indoors to prevent damage or theft, safeguarding its integrity and readiness.
7.5 For transformer acceptance, an official handover document should be signed in collaboration with the transportation department, accurately noting any issues discovered during the inspection.

8. Appearance inspection before installation
8.1 Upon opening the packing case, remove any protective devices and thoroughly check the external condition. Pay particular attention to the mechanical integrity and tightness of the coil and core, ensuring they are flawlessly compressed and secured with bolts in the external connections.
8.2 After a meticulous inspection, re-tighten all fasteners and pressing parts of the coil and iron core in sequence. Ensure no looseness to maintain our product's robust structure.
8.3 Follow the guidelines in the factory technical conditions and relevant assembly instructions to disassemble and reinstall the transformer body correctly, ensuring seamless operation.
8.4 Use dry compressed air or clean rags to meticulously clean any dust and dirt from the product, maintaining its pristine condition and performance.
8.5 If stored for an extended period, address any water beads or significant condensation on the transformer's surface with a drying treatment until the coil's insulation resistance meets the required standards.

9. Inspection and test before operation
9.1 Measure the DC resistance of the high and low voltage winding. Verify that this data is consistent with the information provided in the factory test certificate, ensuring alignment with our rigorous quality standards.
9.2 Check the iron core grounding, typically positioned at the lower or upper iron yoke end. Ensure the grounding is reliable, verify there are no other body laps, and confirm there is no multiple grounding, maintaining optimal safety and functionality.
9.3 Test the insulation resistance
(Voltage level) 10kv 20kv 35kv
HV coil to LV coil Insulation resistance: ≥500 MΩ, ensuring durability and safety. Superior insulation: ≥ 800 MΩ, for enhanced reliability. Optimal insulation: ≥ 1000 MΩ, providing maximum protection.
HV coil to Ground: Ensures secure grounding and safety. Insulation resistance: ≥500 MΩ, promising secure operation. High insulation: ≥800 MΩ, a promise of consistent performance. Ultimate insulation: ≥1000 MΩ, for superior safeguarding.
LV to Ground: Reliable grounding for enhanced safety. Core insulation: ≥50MΩ, assuring dependable protection. Core insulation: ≥50MΩ, reliable and trustworthy. Core insulation: ≥50MΩ, ensuring robust safety.
Core to Ground: Secure and reliable grounding, Ground: Integral for operational stability. Insulation resistance: ≥5MΩ, guaranteeing protection. Insulation: ≥5MΩ, dependable and safe. Insulation: ≥5MΩ, ensuring reliable performance.
9.4 Ensure safety by removing the temperature control probe pay attention to remove it from the coil to prevent damage to the internal thermostat components.
9.5 Regular inspection of the protection system's functionality is vital.
9.6 Ensure an installation distance of at least 800mm from walls and objects to facilitate optimal heat dissipation. Post-installation, connect the ground bolt to the main ground loop for secure grounding.

10, Network operation
10.1 Start with a no-load test after grounding and qualifying the protection and monitoring systems. Execute three shock closing cycles, then adjust the protection system as needed.
10.2 Post-delivery, the HV side's voltage regulation tap should align with the rated position. Adjust voltage during operation as needed, following the tap voltage on the product nameplate. Ensure voltage adjustments occur with the transformer power supply off. HV side incorporates precise voltage adjustment to ensure proper functionality. Adhere to nameplate instructions for voltage regulation (without excitation voltage regulation), and always cut off the transformer power supply before adjustments.
10.3 Employing the BWDK series temperature controller, the setup includes placement of the temperature sensor at the top of the low-voltage coil. This system monitors and displays the temperature of each three-phase coil. When the temperature reaches the preset limit, the system can automatically control fan operation, provide alarms, and facilitate user-adjustable settings according to the thermostat manual.

11. Maintenance
Routine checks and maintenance are crucial after a period of operation. Disconnect the dry transformer to conduct these necessary procedures.
11.1 Inspect all components, including the coil, iron core, wire sealing, and terminals, for any signs of damage, deformation, or overheating. Address any irregularities promptly to prevent further issues.
11.2 Perform thorough dust removal on the transformer. Use dry cloths for accessible parts and compressed air for intricate areas. Refrain from using volatile cleaners to maintain structural integrity.
11.3 For transformers with fans, clear any dust or debris buildup in the fan area. Check the fan bearing's grease and replenish or replace it when necessary to ensure smooth operation.
11.4 After meticulous inspection and thorough maintenance are successfully completed, and before reintroducing the transformer into operation, ensure a comprehensive and meticulous examination is conducted. This should confirm that there are absolutely no metallic or non-metallic foreign objects inadvertently left within the coils, iron core, or insulation components, safeguarding optimal performance and safety.


12. Security matters
12.1 The power supply to the temperature controller (and the fan) should be sourced through the switch panel, rather than being directly connected to the transformer. 12.2 Prior to the operational initiation of the transformer, the grounding system within the transformer room must undergo rigorous scrutiny to ensure impeccable safety standards are maintained.
12.3 Ensure the door of the transformer casing is securely closed, reinforcing the paramount importance of electrical safety.
12.4 Implement measures within the transformer room to effectively prevent the ingress of small animals, thereby mitigating potential accident risks.
12.5 Personnel entering the transformer room must don insulated footwear, maintain a vigilant awareness of the safe distance from live components, and refrain from any physical contact with the transformer.
12.6 In the event of a sudden increase in transformer noise, immediate attention should be directed towards assessing the transformer's load and power grid voltage. Heighten observation of temperature fluctuations, and promptly consult with relevant personnel for timely intervention.
12.7 Conduct a comprehensive inspection of the transformer every 3-5 years. During these assessments, consider performing preventive tests to ensure sustained reliability and performance.
12.8 The installation, testing, operation, and maintenance of transformers must strictly be carried out by professionals with the requisite qualifications, ensuring adherence to the highest standards of precision and safety.

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.