Efficient Dongguan Transformer for Reliable Power Distribution in Industries

• 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: Experience unparalleled power management with our state-of-the-art dry type transformer. Designed with cutting-edge technology, this transformer ensures optimal performance and safety, making it an ideal choice for industrial applications.

SPECIFICATION: Dive into the comprehensive details that make our Efficient Dongguan Transformer a game-changer in power distribution. This section covers all the technical specifications you need to understand the impressive capabilities and reliability of our product.




 

1. Product Description

    

Discover the epitome of modern electrical engineering with our SCB epoxy resin dry type transformer series. These marvels of technology boast unparalleled safety, reliability, energy efficiency, and effortless maintenance. Whether you're considering economic factors, safety standards, or environmental conditions, our transformers shine with a vast array of applications. This exceptional series stands ready to meet diverse needs, proving its versatility across industries and environments.
Our transformers exemplify cutting-edge design and meticulous craftsmanship. Each unit undergoes rigorous testing to ensure perfection. With HV windings crafted from 99.9% pure oxygen-free copper conductors, complemented by epoxy network cloth and resin, and LV windings fashioned from 99.9% pure oxygen-free copper foil, they command superior mechanical and electrical strengths. The iron core, made from high-grade, high-permeability cold-rolled silicon steel sheets, employs a special binding method, granting the equipment outstanding heat dissipation, minimal local discharge, and unmatched reliability. Expect exceptional durability, extended operational life, freedom from moisture complications, flame resistance, explosion-proof features, eco-friendly performance, minimal energy loss, lightweight design, and automatic temperature control. These transformers promise reduced installation and maintenance costs, while significantly conserving space and energy. Perfectly engineered to integrate seamlessly into the load center,our transformers are ideally suited for urban development, skyscrapers, vibrant commercial hubs, residential neighborhoods, entertainment venues, sports complexes, healthcare facilities, tourist attractions, airports, ports, railway terminals, subway networks, highway tunnels, and civil defense infrastructure. They also find applications in petrochemical complexes, power utilities, food processing industries, waste purification plants, offshore oil platforms, mining operations, and countless other environments.




2. Environmental and Operating Conditions
2.1 The installation elevation must not exceed 1000m, with ambient temperatureskept below 40°C. For environments beyond these parameters, we offer specialized designs to accommodate.
2.2 Operations thrive in 100% relative humidity, enduring temperatures from +40ºC to -25ºC (with on-load switch and temperature controller requirements).
2.3 Typically designed for indoor use, installation sites should be free from electric dust and corrosive gases, with excellent ventilation. In areas like basements with limited ventilation, forced ventilation must be considered, requiring approximately 3-4m³/min of airflow for each1kw of loss (encompassing both no-load and load losses).
2.4 When installing, maintain a minimum distance of 800mm from walls and other obstructions,ensuring at least 300mm between neighboring transformers. Adjustments may be made in confined distribution box installations.
2.5 Generally, transformers can be positioned directly on-site and activated post-installation and inspection. For conditions demanding shock-proofing or other specific requirements, the transformer base should be secured with bolts and appropriately fixed. using bolts and nuts.

3. Key Specifications and Technical Parameters
3.1 Rated frequency:50Hz
3.2 Cooling method: AN or tailored to user specifications.
3.3 Shell protection level: IP20 or customized per user needs.
3.4 Connection Group label: DynIl or as per user requirements.
3.5 Transformer phase sequence: Facing the high voltage side from left to right, it goes ABC on the high voltage side and abc on the low voltage side.
3.6 Winding insulation class: F class.
3.7 Insulation Level
Our cutting-edge transformers feature robust voltage withstand capabilities tailored to your industrial needs. For the 10kV model, enjoy a power frequency withstand voltage of 35kV and an impressive impact withstand voltage of 75kV. Elevate your power management with our 20kV product, offering a power frequency withstand voltage of 55kV and a remarkable impact withstand voltage of 125kV. For those demanding the utmost in power distribution, our 35kV model delivers a power frequency withstand voltage of 70kV and a striking impact withstand voltage of 170kV.
3.8 Temperature Rise Limit Specifications:
Our transformers boast an advanced insulation system designed to withstand temperatures up to 155°C. The maximum allowable temperature rise is a substantial 100K, ensuring optimal performance even under demanding conditions.









4.

Product Parameters

 

SCB
Voltage Class (kV)
Capacity (KVA)
Performance Level Code
Our low-voltage coil features an advanced copper foil wound epoxy resin casting, ensuring superior performance and reliability.
Three-Phase


5. Product System Description
5.1 State-of-the-Art Temperature Display and Control System
Tailored to meet user requirements, this product boasts a sophisticated temperature display and control system. Its pivotal functions include: (1) Emitting an overload alarm signal and automatically displaying real-time temperature readings.
(2) Proactively engaging fans when the coil's internal temperature surpasses preset thresholds, facilitating shutdown of the power supply and transformer disconnection for safety.
5.2 Efficient Cooling System
Our cooling method employs natural air cooling (AN),ensuring 100% output capacity.Moreover, forced air circulation cooling (AF) enables long-term overloads of 25% and temporary overloads of 50% for exceptional performance.
5.3 Robust Protection Level
The standard protection level for this transformer is IP00, indicating no protective enclosure. It is recommended for indoor use only. However,it can be fitted with an enclosure,ifspecified by the user, with options for IP20 or IP23. A higher protection level might necessitate capacity adjustments for optimal operation.
Note: An IP20 enclosure blocks solid objects larger than 12mm, providing essential protection for active components. Beyond IP20, an IP23 shell prevents water droplets from entering within a vertical angle of 60°, enhancing safety.


6. Product Packaging and Transportation
6.1 Our products are available in two variants: open type (without a protective cover) and protected type (with a durable enclosure).These are primarily suitable for railway, waterway, and highway transit. If necessary, components can be partially disassembled for transportation, including items like on-load tap changers, temperature controllers, air cooling devices, and protective covers. These may either be packaged separately or shipped as a whole unit. Utilize cranes, winches, or other suitable transport machinery for efficient lifting and unloading.
6.2 During transit, ensure the product is shielded with a waterproof cover to guard against rain damage.
6.3 When hoisting the products in packing boxes, secure the rope to the sleepers at each corner. The packaged items can be elevated between 100mm-150mm from the ground using special lifting equipment, and full lifting should commence only if no abnormalities are detected.
6.4 Throughout transportation, maintain slope angles of less than 15° to distribute vehicle load evenly. Align the product's center of gravity with the vehicle's vertical centerline upon loading. To prevent shifting or toppling, ensure the product's long axis aligns with the transport direction and is firmly secured to the transport vehicle.
6.5 For loading and unloading processes involving vehicles without cranes, follow safety protocols and verify lifting capacity against the product's transportation weight to ensure compliance and safety.
6.6 To ensure seamless product transport, all transformers equipped with trolley systems should have their rollers removed during transit. This prevents any instability during movement. Upon reaching the destination, these rollers should be reassembled. The versatile trolley design allows for a 90° rotation of the roller axles, granting the product flexibility to move either horizontally or vertically when needed.
6.7 Upon arrival at the destination, swiftly transitioning the product out of its transportation state is vital, particularly if it's in an outdoor setting. Prior to installation, it's crucial to store the transformer in a covered, dry, and well-ventilated area. Additionally, implement protective measures against any potential mechanical damage or contamination during this interim phase.


7. Inspection and acceptance
7.1 Upon receiving the product, it is imperative that the user promptly opens the shell to thoroughly conduct an inspection and acceptance process. Verify the completeness of items against the packing list, assess for any damage sustained during transportation, check for displaced or damaged parts, ensure that fasteners remain tight, and confirm the integrity of the insulation and cleanliness of the coil surface.
7.2 Confirm that the data on the product nameplate aligns perfectly with the user's specified requirements, including product specifications, capacity, voltage level, connection group label, and short-circuit impedance.
7.3 Ensure the completeness and accuracy of all delivery technical documents accompanying the product.
7.4 In cases where the product will not be immediately operational after unpacking, it is crucial to securely repackage and store it in a safe, indoor location to prevent damage and theft.
7.5 As part of transformer acceptance, a detailed handover document should be signed in conjunction with the transportation department, clearly documenting any issues identified during the inspection process.

8. Appearance inspection before installation
8.1 Carefully remove any protective devices after unpacking and conduct a meticulous external inspection. Pay special attention to evaluating the mechanical integrity of the coil and core, the degree of compression, and ensure the bolts connecting the exterior remain tightly secured.
8.2 Following the initial inspection, it's imperative to systematically retighten all fasteners, coil, and iron core pressing components to prevent any signs of loosening.
8.3 Carefully disassemble and reinstall the transformer body, adhering strictly to the factory's technical conditions and the instructions provided for complete assembly.
8.4 Utilize dry compressed air or clean rags to meticulously remove dust and dirt from the product's surface.
8.5 Should the transformer have been stored for an extended period, and if there is evidence of water droplets or significant condensation on its surface, undertake a thorough drying treatment until the coil insulation resistance meets the required standards.

9. Inspection and test before operation
9.1 Conduct meticulous measurement of the DC resistance on both high and low voltage windings, ensuring consistency with the data provided in the factory test certificate.
9.2 Verify the reliability of the iron core grounding, typically located at the lower or upper iron yoke's end. Confirm that grounding is secure and that there are no other body laps or instances of multiple grounding.
9.3 Conduct insulation resistance testing
(Voltage level) 10kv 20kv 35kv
HV coil to LV coil ≥500 MΩ ≥ 800 MΩ ≥ 1000 MΩ
HV coil to Ground Standard insulation resistance value at an impressive level of ≥500 MΩ, ensuring safety and reliability. A robust insulation resistance of ≥800 MΩ for enhanced performance and safety. An exceptional insulation resistance of ≥1000 MΩ, indicative of superior quality and dependability.
LV to Ground - Essential for secure and stable power grounding. Strong insulation resistance of ≥50MΩ for optimal functioning. Ensuring operational safety with an insulation resistance of ≥50MΩ. Maintaining reliable performance with a resistance of ≥50MΩ.
Core to Ground - Vital for stable grounding and enhanced safety. Reinforced insulation resistance of ≥5MΩ for consistent safety. Ensures essential safety standards with ≥5MΩ resistance. Meeting stringent safety criteria with a resistance of ≥5MΩ.
9.4 When performing external construction frequency voltage resistance, it is crucial to pay careful attention to remove the temperature control probe wire from the coil to avoid any breakdown of the internal components of the thermostat, thus preserving the transformer's integrity.
9.5 Conduct a thorough check to ensure the protection system is functioning normally and efficiently.
9.6 For optimal performance, the transformer must be installed at a minimum distance of 800mm from the wall and other obstructions affecting heat dissipation. Post-installation, secure the ground bolt to the main ground loop for reliable and safe grounding.

10, Network operation
10.1 Once the attached protection device and monitoring system have been satisfactorily grounded, initiate the transformer with an initial no-load run. After three successful shock closings, conduct a careful inspection and adjustment of the protection system to ensure seamless operation.
10.2 Upon product delivery, connect the voltage regulation tap position on the HV side to its designated rated position. If voltage adjustment is needed during operation, proceed by adjusting the tapping connection as indicated on the product nameplate. Ensure the voltage regulation is carried out only after disconnecting the transformer power supply, to guarantee safety and precision.
10.3 This transformer model is equipped with a BWDK series temperature controller, featuring a temperature-sensing element positioned at the upper end of the low-voltage coil. It autonomously detects and displays the operating temperature of each three-phase coil for enhanced monitoring. Should the coil temperature reach the pre-set threshold, the sensor will automatically control the fan operation, alarm, trip, or cease as necessary. Users can adjust these settings in accordance with the thermostat manual for tailored control.

11. Maintenance
The dry transformer requires routine power-off inspections and maintenance after a period of operation, to preserve optimal functionality.
11.1 Conduct detailed checks on the coil, iron core, wire sealing, tap-connecting terminals, and fasteners. Look for signs of damage, deformation, discoloration, overheating, or corrosion. Address any abnormalities promptly with suitable corrective measures to maintain operational integrity.
11.2 Clean the transformer by removing dust. Wipe accessible components with a dry cloth, avoiding volatile cleaners. For challenging areas within the iron core coil, use compressed air to ensure cleanliness.
11.3 For transformers equipped with fans, remove accumulated dust and debris from the fan. Carefully inspect the fan blades to prevent deformation from damage. Check the fan bearings and replenish or replace the grease as needed to maintain efficiency.
11.4 Post-inspection and maintenance, meticulously check for any metal or non-metallic foreign objects left in coils, iron cores, or insulation parts before restarting the transformer, ensuring a clear and safe environment.


12. Security matters - Prioritize these to ensure safe and efficient operation of the transformer system.
12.1 To ensure optimal functionality and safety, the power supply to the temperature controller (and fan) must originate from the switch panel, and should not be directly linked to the transformer itself. 12.2 Prior to initiating transformer operations, it is crucial to thoroughly inspect the grounding system within the transformer room to guarantee robust electrical safety.
12.3 For enhanced safety in electricity usage, it is imperative that the transformer shell door remains securely closed at all times.
12.4 Implement protective measures to prevent small animals from entering the transformer room, thus safeguarding against potential mishaps and ensuring a secure operational environment.
12.5 Personnel entering the transformer room must wear insulated footwear, maintain a safe distance from live components, and must not physically interact with the transformer to ensure personal safety.
12.6 Should there be a sudden increase in transformer noise, immediate attention must be given to the transformer load and grid voltage. It is essential to closely monitor any fluctuations in transformer temperature and promptly consult with relevant personnel for expert advice.
12.7 Perform routine transformer inspections every 3-5 years, incorporating preventive assessments during this period to uphold reliability and safety.
12.8 The installation, testing, operation, and maintenance of transformers are tasks that must be conducted exclusively by qualified professionals to ensure the highest standards of safety and 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.