Efficient Power Distribution Transformer with Copper Material for OEM 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
• Package Size: 2500.00cm * 900.00cm * 2000.00cm
• Package Gross Weight: 4600.000kg

Product Description

DRY TYPE TRANSFORMER: Experience the excellence and reliability of our advanced Dry Type Transformer, engineered to meet the highest standards in power distribution.

SPECIFICATION: Discover the comprehensive and detailed specifications that define the superior performance and durability of our Efficient Power Distribution Transformer. Tailored specifically for OEM solutions, this transformer is crafted with premium copper material for enhanced efficiency and long-lasting service.




 

1. Product Description

    

The series of SCB epoxy resin dry type transformers offer significant advantages such as exceptional safety, unmatched reliability, energy conservation, and hassle-free maintenance. Crafted with a keen focus on economic efficiency, safety, and applicability, this versatile series of transformers is designed for a broad spectrum of applications, meeting diverse needs effectively.
Our product boasts an advanced design, meticulous manufacturing processes, and rigorous testing protocols. The high-voltage winding is crafted from 99.9% pure oxygen-free copper conductor, utilizing epoxy network cloth and resin. Similarly, the low-voltage winding employs 99.9% pure oxygen-free copper foil. The iron core is fabricated using premium, high-permeability cold-rolled silicon steel sheets with a specialized binding technique. This ensures superior mechanical and electrical strength, alongside remarkable heat dissipation properties. Furthermore, the product features minimal local discharge, exemplary reliability, and extended operational longevity, with excellent resistance to moisture absorption, flame retardancy, explosion-proof capabilities, eco-friendly operation, minimal energy loss, reduced weight, automated temperature regulation, space-saving installation, cost-effective maintenance, and energy efficiency, making it ideal for in-depth load integration.It is excellently suited for urban developments, high-rise structures, commercial complexes, residential communities, entertainment and sports arenas, healthcare facilities, tourist accommodations, airports, ports, railway hubs, subway networks, highway tunnels, civil defense establishments, petrochemical industries, electrical sectors, food production, wastewater treatment plants, offshore rigs, mining operations, and various other environments.




2. The Use of Environmental and Working Conditions
2.1 The installation site elevation must not surpass 1000m, while the ambient temperature should not exceed 40°C. For instances exceeding these limits, customized design solutions are available.Special adjustments can be made to accommodate temperatures beyond this range.
2.2 In operational settings, the relative humidity can reach 100%, with temperatures from +40ºC to -25ºC (the latter necessitating on-load switch and temperature controller configurations).
2.3 Typically intended for indoor use, the installation locale should be free from electrical dust and corrosive gases, boasting excellent ventilation. In cases of subpar ventilation, such as basements, forced ventilation is advisable. Each unit demands approximately 3-4m³/min of airflow per1kW of loss (inclusive of both no-load and load losses).
2.4 Ideally, the product should be positioned 800mm away from walls and other barriers,with a gap of 300mm between adjacent transformers. These distances can be modified when space is constrained by distribution boxes or other installation elements.
2.5 In standard situations, the transformer can be situated directly at the usage site, ready for operation post-installation and inspection. For shock resistance or other specific needs, secure the transformer foundation using bolts, fastened with nuts and bolts for stability.

3. Main Specifications and Technical Parameters
3.1 Rated Frequency:50Hz
3.2 Cooling Method: AN or per user specifications.
3.3 Shell Protection Level: IP20 or customized to user requirements.
3.4 Connection Group Label: DynIl or as specified by the user.
3.5 Transformer Phase Sequence: Observing the transformer from the high voltage side, arrangement is ABC for high voltage and abc for low voltage.
3.6 Winding Insulation Class: F Class.
3.7 Insulation Level
Our Efficient Power Distribution Transformer is engineered to excel under demanding conditions. With a power frequency withstand voltage of 35kV and an impressive impact withstand voltage of 75kV at 10kV, this product assures robust performance and reliability. Increase the stakes with our 20kV offering, providing a power frequency withstand voltage of 55kV and an outstanding impact withstand voltage of 125kV. For even higher demands, our 35kV product stands tall with a power frequency withstand voltage of 70kV and a remarkable impact withstand voltage of 170kV. Experience the power of superior engineering with Zhejiang Gangkong Electric Co., Ltd.
3.8 Temperature Rise Limit: Unveiling the precise parameters that guarantee optimal performance.
Our cutting-edge insulation system is designed to excel with a temperature limit set at an impressive 155°C, ensuring resilience and long-lasting performance. The maximum temperature rise is meticulously controlled, reaching up to 100K, ensuring safety and efficiency in every application.









4.

Product Parameters

 

SCB
Voltage Class: KV
Capacity: KVA
Performance Level Code
The low-voltage coil boasts a copper foil wound epoxy resin pouring, ensuring optimal conductivity and durability.
Three-Phase


5. Product System Description
5.1 Temperature Display and Temperature Control System
Adaptable to user specifications, our product can integrate a temperature display and control system which serves to: (1) Issue overload alarm signals and automatically showcase the current temperature for optimal management.
(2) When the coil's internal temperature surpasses the signal thermometer's threshold, a fan triggers automatically to regulate, or disconnect power supply, effectively halting the transformer to prevent damage.
5.2 Cooling System
The cooling method is designed for Air Natural Cooling (AN), providing 100% output capacity; With forced air circulation cooling (AF), enjoy long-term overload potential of 25% and short-term overload capacity of up to 50%, maximizing efficiency.
5.3 Protection Level
The standard protection level for this product is IPO0, with the transformer excluding an external shell, requiring indoor use; Itcan be fitted with a shell,ifusers desire IP20 or IP23 protection. For higher protection levels, consider reduced transformer capacity operation.
Note: An IP20 housing guards against solid objects larger than 12mm, creating a safety barrier for live components. IP23 further shields against water droplets descending at an angle of 60°, elevating protection.


6. Product Packaging and Transportation
6.1 Products are available in two configurations: open type (without protective cover) and protected type (featuring a protective shell), suited for transport via railway, waterway, or highway. If needed, components can be partially disassembled for transportation (such as on-load tap changers, temperature controllers, air cooling devices, and protective covers). These items require separate packaging or can be transported together in a packing box. Utilize cranes, winches, or suitable transport machinery for lifting and unloading.
6.2 During transit, ensure the product is covered with waterproof cloth to shield against rain.
6.3 While lifting products with packing boxes, secure ropes to the sleepers at the bottom corners. Lift the packaged products 100mm-150mm from the ground with specialized lifting devices, proceeding once conditions are confirmed stable.
6.4 During transportation, maintain the incline of the route within a 15° range to balance vehicle load. Align the product's center of gravity with the vehicle's vertical center line. Securely fasten the product to prevent movement or toppling, keeping its long axis parallel to the direction of travel.
6.5 When handling vehicles without cranes, it's essential to meet all safety technical requirements. Always verify the lifting capacity to ensure it matches the product's transportation weight, safeguarding against any mishaps.
6.6 For transportation stability, if the product includes a car, remove the roller from the car's bottom during transit. Restore it upon arrival for proper installation. For products with a trolley, adjust the roller axle direction 90° at both ends of the frame to facilitate horizontal or vertical movement.
6.7 Once the product reaches its destination, minimize parking in the transit state, especially outdoors. Prioritize placing it in a covered, dry, and ventilated area before installation. 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. Verify that all items listed in the packing list are present and check for any transportation damage to the transformer, parts displacement, loose fasteners, insulation issues, and surface cleanliness of the coil.
7.2 Confirm that the product nameplate data aligns with the user's specified product specifications, including capacity, voltage level, connection group label, and short-circuit impedance.
7.3 Ensure the completeness of all delivery technical documents.
7.4 If the product won't be used immediately post-unpacking, repackage and store it securely indoors to prevent damage or theft.
7.5 During transformer acceptance, a handover document should be signed in collaboration with the transportation department, detailing any issues uncovered during inspection.

8. Appearance inspection before installation
8.1 Upon opening the packing case, remove any protective devices and examine the external condition. Pay particular attention to the mechanical integrity and compression level of the coil and core, as well as the bolts connecting externally.
8.2 Post-inspection, retighten all fasteners and coil and core pressing components sequentially, ensuring no looseness remains.
8.3 Adhere to factory technical conditions and assembly instructions when disassembling and reinstalling the transformer body.
8.4 Remove dust and dirt from the product using dry compressed air or clean rags for optimal cleanliness.
8.5 If stored for extended periods leading to water beads or heavy condensation on the transformer, perform drying treatment until the coil insulation resistance meets required standards.

9. Inspection and test before operation
9.1 Assess the DC resistance of both high and low voltage windings, ensuring alignment with the factory test certificate data.
9.2 Examine the iron core grounding, typically located at the lower or upper iron yoke's end, to ensure grounding reliability, absence of other body laps, and no instances of multiple grounding.
9.3 Conduct an insulation resistance test
(Voltage level) 10kv 20kv 35kv
HV coil to LV coil Impeccable insulation property with resistance of ≥500 MΩ, ensuring safety and reliability. Exceptionally robust insulation with a resistance of ≥ 800 MΩ, offering enhanced protection. Outstanding insulation quality with a resistance of ≥ 1000 MΩ, guaranteeing superior safety.
High Voltage (HV) coil to Ground: secure and stable connection for optimal performance. Solid insulation of ≥500 MΩ, designed for dependable operation. Elevated insulation standards with a resistance of ≥800 MΩ, for improved functionality. Top-tier insulation integrity with a resistance of ≥1000 MΩ, ensuring ultimate protection.
Low Voltage (LV) to Ground: ensuring secure electrical connections and performance. Reliable insulation with a resistance of ≥50MΩ, providing essential safety measures. Dependable insulation resistance of ≥50MΩ, supporting consistent electrical performance. Consistent insulation efficiency with a resistance of ≥50MΩ, ensuring operational integrity.
Core to Grounding: Achieving efficient and reliable grounding.Enhanced safety with resistance of ≥5MΩ, promoting safe operational conditions. Practical and reliable with a resistance of ≥5MΩ, ensuring operational safety. Trustworthy insulation with a resistance of ≥5MΩ, assuring safety and performance. Efficient procedure ensuring safety: 9.4 During external construction frequency voltage resistance, careful attention
must be given to ensure safety. It is crucial to remove thetemperature control probe wire from the coil, safeguarding against internal component breakdown within the thermostat.
9.5 Verify the protection system's functionality to ensure all safety protocols are in place.
9.6 For optimal installation, place the transformer a minimum of 800mm from walls and objects that might hinder heat dissipation. Securely connect the ground bolt to the general ground loop post-installation for reliable grounding.

10, Network Operation: Ensuring seamless transition to operation.
10.1 Once the protection device and monitoring system are grounded and meet requirements, initiate no-load transformer operation. After three shock closings, evaluate and adjust the protection system to ensure effectiveness.
10.2 Following product delivery, connect the voltage regulation tap of the HV side appropriately. Adjust voltage during operation as needed, following the tapping voltage on the product nameplate. Ensure voltage adjustments occur with HV side disconnected from power.
10.3 Incorporating BWDK series temperature controllers, the transformers feature a high-precision temperature measurement system at the coil's upper end to automatically monitor and display the temperature of each phase. The system autonomously manages fans, alarms, and trips based on user-defined settings, allowing for precision temperature control per the thermostat manual.

11. Maintenance: Expert care for sustained performance.
After a designated operational period, disconnect the dry transformer to perform essential checks and maintenance to sustain top performance.
11.1 Conduct a comprehensive inspection of the coil, iron core, wire sealing, tap-connecting terminals, and fasteners to detect any damage, deformation, loosening, discoloration, overheating, and corrosion. Address abnormalities with necessary corrective actions to prevent operational failures.
11.2 Maintain cleanliness by dusting the transformer thoroughly. Use dry cloths for accessible surfaces and compressed air for hard-to-reach areas, avoiding volatile cleaners to preserve component integrity.
11.3 For transformers with fans, it is imperative to remove dust and soil build-up from the fans. Ensure the fan blades remain undamaged to avoid deformation issues. Check and replenish or replace fan bearing grease as necessary to maintain smooth operation.
11.4 After completing the meticulous inspection and maintenance, it's imperative to conduct a thorough examination to ensure the absence of any metallic or non-metallic foreign objects inadvertently left within the coil, iron core, and insulation components before reactivating the transformer.


12. Security matters
12.1 The power supply for the temperature controller (and fan) should be sourced through the switch panel, ensuring it isn't directly connected to the transformer. 12.2 Before initializing transformer operations, it's crucial to meticulously verify the grounding system of the transformer room to guarantee its reliability and safety.
12.3 Ensure the transformer shell's door is securely closed to maintain optimal electrical safety conditions.
12.4 The transformer room must implement effective measures to keep small animals at bay, preventing any potential accidents or disruptions.
12.5 Personnel entering the transformer room must wear insulated shoes, maintain a safe distance from live parts, and avoid direct contact with the transformer to ensure personal safety.
12.6 In the event of a sudden increase in transformer noise, it's crucial to promptly assess the transformer's load and grid voltage, closely monitor any temperature fluctuations, and swiftly consult relevant personnel for expert advice.
12.7 The transformer requires a detailed inspection every 3-5 years, during which some preventive tests are recommended to maintain optimal performance.
12.8 Only qualified professionals should undertake the installation, testing, operation, and maintenance of transformers, ensuring adherence to the highest standards of safety and 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.