Advanced Compact Transformer for Superior Energy Efficiency Solutions

• 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: Harnessing cutting-edge technology, Zhejiang Gangkong Electric Co., Ltd presents its state-of-the-art dry type transformers. These marvels of engineering promise reliability and efficiency, setting the benchmark in energy transformation.

SPECIFICATION: Discover the unparalleled specifications of our dry type transformer range, meticulously crafted to meet the highest standards of performance and sustainability. Zhejiang Gangkong Electric Co., Ltd ensures each product is a testament to innovation and quality.

1. Product Description

The SCB epoxy resin dry-type transformers from Zhejiang Gangkong Electric Co., Ltd., epitomize cutting-edge technology with remarkable attributes such as superior safety, unparalleled reliability, impressive energy efficiency, and effortless maintenance. From economic viability to unmatched safety standards, these transformers are engineered to excel under diverse conditions. Ultimate flexibility and versatility define this series, rendering it perfect for a broad spectrum of applications, regardless of the environment.
Each transformer boasts an advanced design, meticulous craftsmanship, and flawless testing protocols. The HV winding is crafted from 99.9% oxygen-free copper conductor enveloped in epoxy network cloth and resin, while the LV winding utilizes 99.9% oxygen-free copper foil. The core is constructed from premium cold-rolled silicon steel sheets with a unique binding technique, yielding exceptional mechanical and electrical robustness, along with outstanding thermal dissipation efficiency. Minimal local discharge is ensured, guaranteeing high reliability, an extended operational lifespan, and zero moisture absorption. These transformers are flame-retardant, explosion-proof, environmentally friendly, and exhibit minimal energy loss. Their lightweight design, automatic temperature control, and compact footprint reduce both installation space and maintenance expenses, while optimizing energy consumption, making them ideal for penetrating deep into the load center.Perfectly suited for urban infrastructure, including high-rise buildings, bustling commercial hubs, residential complexes, entertainment and sports arenas, healthcare facilities, tourist attractions, airports, ports, railway stations, subways, highway tunnels, and civil defense facilities. Additionally, they serve petrochemical plants, electrical enterprises, the food industry, sewage purification centers, offshore oil platforms, mines, and many other locales with precision.




2. The use of environmental and working conditions
2.1 The installation site should be at an elevation not exceeding 1000m, with the ambient temperature maintainedwithin 40°C. Exceeding these parameters may necessitate a special design to ensure optimal performance.
2.2 In operational environments, relative humidity can reach 100%, with temperatures ranging from +40ºC to -25ºC. (-25ºC demands on-load switch and temperature controller specifications).
2.3 Generally intended for indoor installation, sites must be devoid of electric dust and corrosive gases, assuring proper ventilation. If ventilation is inadequate, such as in basements, forced ventilation should be a consideration to meet the requirement of approximately 3-4m3/min ventilation per1kW loss (including both no-load and load losses).
2.4 Installation requires an 800mm gap from walls and other barriers,and a 300mm gap between adjacent transformers. These distances may be modified as necessary to accommodate space limitations in installation settings.
2.5 Typically, transformers can be directly installed and operational upon inspection. For scenarios requiring shock-proofing or other specialized provisions, secure the transformer's foundation with bolts, fastening them firmly with nuts and bolts.

3. Main specifications and technical parameters
3.1 Rated frequency:50Hz, ensuring efficient and consistent performance.
3.2 Cooling method: AN, adaptable based on user-specific requirements.
3.3 Shell protection level: IP20, customizable per user preference.
3.4 Connection Group label: DynIl, flexible to user specifications.
3.5 Transformer phase sequence: On facing the high voltage side from left to right, the sequence is ABC on the high voltage side, and abc on the low voltage side.
3.6 Winding insulation class: F class, signifying high-level insulation.
3.7 Insulation Level
Our state-of-the-art transformers are engineered to excel with impressive power frequency withstand voltages and impact withstand voltages across multiple product lines: - For our 10kV products, experience a robust power frequency withstand voltage of 35kV and an impact withstand voltage of 75kV, ensuring optimal performance and reliability. - Our 20kV products boast a power frequency withstand voltage of 55kV and an impressive impact withstand voltage of 125kV, providing superior protection and efficiency. - Discover the exceptional capabilities of our 35kV products, offering a power frequency withstand voltage of 70kV and a formidable impact withstand voltage of 170kV. Each product is designed to deliver unmatched durability and operational excellence.
3.8 Temperature Rise Limit: Discover the meticulous engineering behind our products, designed to maintain optimal safety and performance standards in various operational conditions.
Our advanced insulation system is meticulously crafted to withstand temperatures up to 155°C, ensuring high resilience and durability. Moreover, our system limits the maximum temperature rise to an impressive 100K, reflecting our commitment to safety and performance.









4. Explore a new dimension of reliability and efficiency with our innovative product offerings.

Product Parameters

SCB
Voltage Class (kV)
Capacity (KVA)
Performance Level Code
The low-voltage coil showcases a masterfully crafted copper foil winding, encapsulated in epoxy resin.
Three-Phase Engineering


5. Encompassing Product System Description
5.1 Advanced Temperature Display and Control System
Tailored to user specifications, this state-of-the-art system offers a comprehensive temperature display and control suite. It provides: (1) An intuitive overload alarm system, brilliantly displaying real-time temperature metrics.
(2) When the coil's internal temperature surpasses preset thresholds, this smart system seamlessly initiates fan operations or power disconnection, safeguarding the transformer with precision.
5.2 Superior Cooling System
The cooling methodology employed is a natural air cooling (AN) system, ensuring a robust output capacity of 100%; In addition, the forced air circulation cooling (AF) system accommodates a remarkable long-term overload capacity of 25% and an impressive short-term overload of 50%.
5.3 Robust Protection Level
This product's standard protection level is IP00, signaling an absence of an external shell, thereby necessitating indoor utilization; It can be outfitted with a protective shell,if desired by the user, with options for IP20 or IP23 levels. For higher protection levels, transformer capacity adjustments may be needed.
Special Note: The IP20 enclosure effectively blocks the intrusion of solid objects larger than 12mm, providing a secure barrier for active components. Extending to IP23, it also prevents water droplets from entering at a 60° angle, ensuring comprehensive protection.


6. Meticulous Product Packaging and Transportation
6.1 Products are available in two variants: open type (sans protective cover) and secured type (featuring a protective shell), adaptable to railway, waterway, or highway transportation. If needed, parts can be partially disassembled for transportation, including components like on-load tap changers, temperature controllers, air cooling units, and protective covers, which may be separately packaged or transported in a comprehensive packing box. For product handling, cranes, winches, or other suitable machinery should be employed for efficient lifting and unloading.
6.2 Throughout the transportation process, products must be shielded with waterproof coverings to safeguard against rain exposure.
6.3 When lifting packaged products, ropes are to be securely fastened to the sleepers at the bottom corners of the boxes. Products can be elevated 100mm-150mm from the ground using specialized lifting devices, and once stability is confirmed, they can be fully raised.
6.4 During transit, ensure transportation routes do not exceed 15° on inclines. To distribute the load evenly, the product's center of gravity should align with the vehicle's vertical centerline during loading. To avert displacement or toppling, the product's long axis must align with the transport direction, securing it firmly to the vehicle.
6.5 When engaging in the delicate task of loading and unloading vehicles without cranes, it's imperative to uphold the highest safety technical standards. Ensure the lifting capacity aligns seamlessly with the product's transportation weight, guaranteeing a safe and efficient process.
6.6 When transporting products, the innovative design requires the car's bottom rollers to be removed, enhancing stability throughout the journey. Once at the destination, these rollers should be reattached to facilitate easy installation. For trolley-equipped products, the frame's roller axle can be ingeniously adjusted by 90°, allowing versatile movement in horizontal or vertical directions.
6.7 Upon arrival at the destination, minimize the time the product remains in the transportation state, especially if exposed to the elements. Prior to installation, it's optimal to store the product in a sheltered, dry, and well-ventilated environment while ensuring protection from mechanical damage and contamination.


7. Inspection and acceptance
7.1 Upon receipt of the product, it's essential for the user to promptly open the shell for a meticulous inspection. Ensure all items on the packing list are present, verify the transformer's condition post-transport, assess for any displaced or damaged parts, loose fasteners, insulation breaches, or dirt on the coil surface.
7.2 Confirm that the data on the product's nameplate perfectly matches the user's locked specifications, including capacity, voltage level, connection group label, and short-circuit impedance.
7.3 Ensure completeness of all delivery technical documents.
7.4 If the product isn't immediately operational post-unpacking, repackage it securely and store it indoors to prevent any potential damage or theft.
7.5 For transformer acceptance, ensure that a detailed handover document is signed with the transportation department, capturing any issues identified during the inspection.

8. Appearance inspection before installation
8.1 Upon removing the protective device (if present) from the unpacked case, conduct a thorough examination of the external condition. Focus on the mechanical soundness of the coil and core, the compression level of both, and the tightness of the bolts outside the connection.
8.2 Post-inspection, systematically tighten all fasteners and pressing parts of the coil and iron core to avoid any loosening.
8.3 Follow the factory's technical conditions and assembly instructions meticulously when disassembling and reinstalling the transformer body.
8.4 Employ dry compressed air or clean rags to meticulously remove dust and dirt from the product, ensuring it remains in pristine condition.
8.5 If extended storage has led to water beads or significant condensation on the transformer, perform drying treatments until the coil insulation resistance meets the required standards.

9. Inspection and test before operation
9.1 Accurately measure the DC resistance of both high and low voltage windings, ensuring consistency with the data in the factory test certificate.
9.2 Verify the iron core's grounding reliability (the ground lug typically resides at the end of the lower or upper iron yoke) to ensure there is no other body laps and that multiple groundings are avoided.
9.3 Conduct thorough tests on the insulation resistance
at each voltage level: 10kv, 20kv, and 35kv.
HV coil to LV coil Insulation resistance: ≥500 MΩ Insulation resistance: ≥800 MΩ Insulation resistance: ≥1000 MΩ
HV coil to Ground Insulation resistance: ≥500 MΩ Insulation resistance: ≥800 MΩ Insulation resistance: ≥1000 MΩ
LV to Ground Insulation resistance: ≥50MΩ Insulation resistance: ≥50MΩ Insulation resistance: ≥50MΩ
Core to GroundInsulation resistance: ≥5MΩ Insulation resistance: ≥5MΩ Insulation resistance: ≥5MΩ Insulation resistance: ≥5MΩ
9.4 During the external construction frequency voltage resistance testing, it is crucial to ensure the removal ofthe temperature control probe wire from the coil. This precaution prevents the breakdown of the thermostat's internal components, ensuring reliable performance.
9.5 Ensure the protection system is operational and functioning correctly.
9.6 For optimal performance, position the transformer at least 800mm from walls and objects that may impede heat dissipation. Once installed, connect the ground bolt to the main ground loop, ensuring a secure and reliable grounding.

10, Network Operation
10.1 With the protective device and monitoring system confirming grounding standards, the transformer should initially operate without load. After three shock closings, review and fine-tune the protection system as necessary.
10.2 Upon delivery, the voltage regulation tap on the HV side should be adjusted to the designated rated position. Adjustments during operation require tapping connections as specified on the product plate. These adjustments only occur when the transformer power is securely off.
10.3 Utilizing the BWDK series temperature controller, the system's temperature sensor is positioned at the low-voltage coil's upper end. This setup ensures automatic monitoring and display of the three-phase coil temperatures. If a coil's temperature surpasses its threshold, the thermometer can autonomously manage the fan, initiate warnings, trip, and allow users to adjust temperatures per the thermostat manual.

11. Maintenance
After prolonged use, disconnect the dry transformer for essential inspections and maintenance.
11.1 Examine the coil, iron core, wire seals, tap-connecting terminals, and fasteners for any signs of damage, deformation, loosening, discoloration, overheating, or corrosion. Address any abnormalities promptly to prevent operational issues.
11.2 Clean the transformer meticulously. Use dry cloths for accessible parts, avoiding volatile cleaners. For intricate areas within the iron core coil, employ compressed air for effective cleaning.
11.3 For transformers with fans, also clear dust and debris from the fan. Ensure the fan blades remain undamaged to prevent deformation. Check the fan bearing's grease levels, replenishing or replacing as needed.
11.4 After completing thorough inspection and meticulous maintenance, ensure that the transformer is thoroughly examined for any metallic or non-metallic foreign objects that may have accidentally fallen into the coil, iron core, or insulation components before it is re-energized.


12. Security matters
12.1 The power supply for the temperature controller and fan must be connected through the switch panel; it should never be directly linked to the transformer itself. 12.2 Prior to reactivating the transformer, a rigorous inspection of the transformer room's grounding system is mandatory.
12.3 To ensure electrical safety, the door of the transformer enclosure must be securely closed.
12.4 The transformer room should be equipped with protective measures to prevent the entry of small animals, thereby averting potential accidents.
12.5 Personnel entering the transformer room must wear insulated footwear, maintain a safe distance from live components, and refrain from touching the transformer.
12.6 If there is a sudden increase in transformer noise, it is crucial to immediately assess the transformer’s load and the power grid voltage, closely monitor any changes in temperature, and promptly consult relevant personnel for further guidance.
12.7 It is recommended that the transformer undergoes an inspection every 3-5 years, during which time preventive testing can also be performed.
12.8 Installation, testing, operation, and maintenance of transformers should be conducted exclusively by qualified professionals with the necessary expertise.

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.