Robust Transformer Manufacturing Solutions for Efficient Power Distribution

• 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 the pinnacle of advanced electrical engineering with our cutting-edge dry type transformers, designed for exceptional performance in power distribution. These transformers embody reliability and efficiency, tailored to meet the diverse needs of modern industries.

SPECIFICATION: Discover the precise engineering excellence with our comprehensive specifications that outline the robust features of our dry type transformers. Delve into the technical details that ensure unmatched performance, safety, and durability in your power solutions.

1. Product Description

Introducing the SCB Epoxy Resin Dry Type Transformer series, designed for unparalleled safety, reliability, energy efficiency, and effortless maintenance. This innovative series meets the highest standards of economic and safety considerations. Built for diverse environments, these transformers offer a vast range of applications, ready to meet your specific needs.
Crafted with advanced design and meticulous processes, these transformers undergo rigorous testing to ensure perfection. The HV winding utilizes 99.9% oxygen-free copper conductor combined with epoxy network cloth and resin, while the LV winding employs 99.9% oxygen-free copper foil. The iron core is constructed from premium high-permeability cold-rolled silicon steel sheets, using a specialized binding method. This results in high mechanical and electrical strength, exceptional heat dissipation, minimal local discharge, ensuring outstanding reliability and longevity, with no moisture absorption, flame retardant properties, explosion-proof design, zero pollution, reduced energy loss, lightweight structure, automatic temperature control, and compact installation footprint. These transformers remarkably reduce maintenance costs and energy consumption, making them highly adaptable to various settings.Designed to integrate seamlessly from urban centers to high-rise buildings, commercial hubs, residential districts, entertainment venues, sports complexes, hospitals, and touristic landmarks. They are also perfect for airports, ports, railway stations, subways, highway tunnels, civil defense facilities, petrochemical and electrical enterprises, food processing plants, sewage treatment facilities, offshore oil platforms, mining operations, and more.




2. Environmental and Working Conditions
2.1 The installation site should not exceed 1000m above sea level, and ambient temperatures should be kept below 40°C. For temperatures or elevations beyond these limits, specialized designs are available.Our team can provide custom solutions for installations requiring unique specifications.
2.2 Operating conditions: With a permissible relative humidity up to 100%, these transformers thrive in environments ranging from +40ºC to -25ºC (note: on-load switch and temperature controller required at -25ºC).
2.3 Optimized for indoor use, the installation sites should maintain cleanliness, be free of electric dust and corrosive gases, and ensure good ventilation. In areas like basements with limited airflow, forced ventilation should be considered, requiring approximately 3-4m3/min ventilation foreach 1kW loss (combining both no-load and load losses).
2.4 Installation should maintain a minimum distance of 800mm from walls or other obstructions,and 300mm between adjacent transformers. These distances can be adjusted when distribution boxes or space are constrained.
2.5 Typically, transformers can be placed directly at their operational site and activated post-installation and inspection. For scenarios requiring shock-proof solutions or special conditions, secure the transformer’s foundation with bolts, fastening it firmly using bolts and nuts for maximum stability.

3. Main Specifications and Technical Parameters
3.1 Rated Frequency:50Hz, the standard in power distribution.
3.2 Cooling Method: AN, or customizable to user needs.
3.3 Shell Protection Level: IP20, adaptable to client requirements.
3.4 Connection Group Label: DynIl, or tailored as per user instructions.
3.5 Transformer Phase Sequence: Viewed from the high voltage side, phase sequence is ABC on high voltage, abc on low voltage.
3.6 Winding Insulation Class: F-class, ensuring robust insulation.
3.7 Insulation Level
Our exceptional range of products is designed to meet rigorous industry standards, ensuring reliable performance and enhanced safety. For the 10kv units, the power frequency withstand voltage is an impressive 35kv, while the impact withstand voltage is 75kv. The 20kv products boast a power frequency withstand voltage of 55kv, with an impact withstand voltage reaching 125kv. Finally, the 35kv offerings deliver a robust power frequency withstand voltage of 70kv and an impact withstand voltage of 170kv.
3.8 Temperature Rise Limit: A Critical Specification for Longevity and Performance
Experience peace of mind with our advanced insulation system, maintaining a steadfast operational temperature of 155°C. The maximum temperature rise is expertly controlled at 100k, ensuring durability and efficiency under demanding conditions.









4.

Product Parameters

SCB
Voltage class kv
Capacity KVA
Performance level code
The low-voltage coil is copper foil wound with precision epoxy resin pouring, ensuring robust performance.
three-phase


5. Product System Description
5.1 Advanced Temperature Display and Control System
Our product is equipped to meet user requirements with a cutting-edge temperature display and control system. Its functionalities include: (1) Emitting overload alarm signals and automatically displaying the current temperature.
(2) If the internal coil temperature surpasses the preset limit, it intelligently activates or stops the fan, disconnects the power supply, and safely shuts off the transformer.
5.2 Efficient Cooling System
The cooling method employed is air natural cooling (AN), ensuring the output capacity remains at an optimal 100%.; In addition, forced air circulation cooling (AF) allows for a long-term overload threshold of 25% and can handle short-term overloads up to 50%.
5.3 Superior Protection Level
This product boasts a standard protection level of IPO0. The transformer is designed for indoor use without a shell, but can be equipped with a shell if indoor use; It can be equipped with a shell,if required by the user, achieving IP20 or IP23 protection. Note: For higher transformer protection levels, consider capacity reduction during operation.
Note: The IP20 housing prevents objects larger than 12mm from entering, providing essential safety for live components. The IP23 protection adds an additional layer by preventing 60° angled water droplets from breaching.


6. Product Packaging and Transportation
6.1 The products are available in two variants: open type (without protective cover) and protected type (with protective shell), suitable for railway, waterway, and highway transport. If necessary, components can be partially disassembled for transport (such as on-load tap changer, temperature controller, air cooling device, protective cover, etc., which require separate packaging) or shipped as a whole in a secure packing box. Utilize cranes, winches, or suitable machinery for the safe lifting and unloading of products.
6.2 To safeguard against rain, ensure the product is covered with waterproof cloth during transportation.
6.3 When lifting products with packing boxes, securely attach ropes to the sleepers at the four bottom corners. Elevate the packaged products 100mm-150mm off the ground using a specialized lifting device, ensuring everything is in order before full lifting.
6.4 During transport, ensure the slope of the route does not exceed 15° up or down. This maintains a balanced load distribution, positioning the product's center of gravity on the vehicle's vertical center line during loading. To prevent displacement or toppling, align the long axis of the product with the direction of travel and securely fasten it to the transport vehicle.
6.5 When handling vehicles without cranes, it is imperative to adhere to stringent safety technical guidelines. Ensure meticulous verification of the lifting capacity, confirming it aligns seamlessly with the product's transportation weight, to guarantee optimal safety and efficiency.
6.6 To meet user specifications, products transported with a car must have the roller at the car's base detached during transit to maintain stability. It should be reattached before final installation at the destination. Additionally, for trolley-equipped products, it is possible to adjust the roller axle at both frame ends to a 90° angle, facilitating versatile movement either horizontally or vertically.
6.7 Following the shipment of the product to its destination, it is vital to minimize its parking duration in a transportation state, especially when exposed to the elements. Prior to installation, ensure the product is stationed in a sheltered, dry, and well-ventilated area. Additionally, proactive measures must be implemented to shield the product from any mechanical damage and contamination.


7. Inspection and acceptance
7.1 Upon receipt of the product, the user must promptly open the shell , initiating a thorough inspection and acceptance process. Verify the completeness of items listed on the packing list, assess the transformer for any transport-related damage, inspect for damaged or displaced parts, ensure fasteners are secure, check for insulation damage, and evaluate the cleanliness of the coil surface.
7.2 Confirm that the data presented on the product nameplate accurately matches the user's specified product specifications. This includes capacity, voltage level, connection group label, and short-circuit impedance.
7.3 Confirm the comprehensiveness of all delivered technical documents.
7.4 If the product is not to be put into operation immediately post-unpacking, it is essential to repack it and store it securely indoors to prevent potential damage and theft.
7.5 During transformer acceptance, it is crucial to sign the corresponding handover document alongside the transportation department. This document must clearly reflect any issues identified during the inspection.

8. Appearance inspection before installation
8.1 Upon unpacking, remove any protective devices (if applicable) and thoroughly inspect the external condition, with particular attention to the mechanical integrity of the coil and core. Assess the compression level of the coil and core, as well as the tightness of the bolts at the connections.
8.2 Following inspection, it is essential to methodically retighten all fasteners and pressing components of the coil and iron core in sequence, ensuring no loosening occurs.
8.3 Adhere to the factory's technical conditions and relevant instructions for complete assembly when disassembling and reinstalling the transformer body.
8.4 Utilize dry compressed air or clean rags to meticulously clean any dust and dirt from the product.
8.5 If storage has been prolonged, resulting in water beads or significant condensation on the transformer surface, conduct drying treatment until the coil insulation resistance meets the standard.

9. Inspection and test before operation
9.1 Measure the DC resistance of both high and low voltage windings. Verify if the measurements align perfectly with the factory test certificate data for utmost reliability.
9.2 Conduct a thorough check of the iron core grounding. Typically, the ground lug is located at the end of the lower or upper iron yoke. Ensure the grounding is robust, with no other body lap or multiple grounding issues.
9.3 Conduct an insulation resistance test
across voltage levels: 10kv 20kv 35kv
between HV coil and LV coil. ≥500 MΩ ≥ 800 MΩ ≥ 1000 MΩ
HV coil to Ground ≥500 MΩ ≥800 MΩ ≥1000 MΩ
LV to Ground ≥50MΩ ≥50MΩ ≥50MΩ
Core to Ground ≥5MΩ ≥5MΩ ≥5MΩ
9.4 During the external construction frequency voltage resistance tests, it is crucial to pay attention to removinge the temperature control probe wire from the coil. This prevents breakdowns in the internal components of the thermostat, ensuring optimal performance.
9.5 Inspect the protection system thoroughly to confirm it is functioning normally.
9.6 Position the transformer at least 800mm away from walls or objects that obstruct heat dissipation. Once installed, ensure the grounding bolt is securely attached to the general ground loop for effective and reliable grounding.

10, Network operation
10.1 Once the protection device and monitoring system are grounded and verified, initiate the transformer under no-load conditions. Conduct three shock closings, and thereafter, scrutinize and fine-tune the protection system as needed.
10.2 Upon product delivery, connect the voltage regulation tap at the HV side to its rated position. Should voltage adjustments be necessary during operation, execute the appropriate tapping connection according to the voltage indicated on the product's nameplate. This must be carried out only when the transformer power is off. HV In cases without excitation voltage regulation, ensure the transformer is de-energized before adjusting voltage.
10.3 Our transformer features the advanced BWDK series temperature controller. The temperature sensing element, placed at the upper end of the low-voltage coil, provides real-time monitoring and displays the working temperature for each phase. When the temperature hits the preset limit, the thermometer automatically manages fan operation, halting, alarming, or tripping as configured. Users can tailor temperature settings following the thermostat manual.

11. Maintenance
Following a period of operation, it's imperative to disconnect the dry transformer to conduct essential examinations and maintenance.
11.1 Inspect the coil, iron core, wire sealing, tap-connecting terminals, and fasteners in all sections for damage, deformation, loosening, discoloration, overheating, or corrosion. Address any abnormalities by checking for operational damage and implementing corrective measures.
11.2 Perform a thorough dusting of the transformer. All parts accessible by hand should be cleaned with a dry cloth, avoiding volatile cleaners. For parts within the iron core coil that are challenging to reach, use compressed air to ensure they are dust-free.
11.3 If the transformer is equipped with a fan, also clean any dust and dirt accumulation from it. Handle with care to avoid deforming the fan blades. Additionally, inspect the fan bearing's grease level and replenish or replace as necessary.
11.4 Upon the completion of inspection and maintenance, it is imperative to meticulously inspect the transformer before it is reactivated. Ensure that no metal or non-metal foreign objects have inadvertently fallen into or been left within the coils, iron core, or insulation components.


12. Safety Protocols
12.1 The temperature controller, along with any associated fans, should be powered via the switch panel, ensuring no direct connection to the transformer itself. 12.2 Prior to activating the transformer, a thorough inspection of the grounding system within the transformer room is crucial for safe operations.
12.3 It is vital to securely close the door of the transformer casing to maintain electrical safety and prevent unauthorized access.
12.4 Implement measures within the transformer room to effectively deter small animals from entering, thereby avoiding potential mishaps.
12.5 Personnel entering the transformer room must wear insulating footwear, strictly maintain a safe distance from live components, and avoid any contact with the transformer.
12.6 A sudden increase in transformer noise warrants immediate attention: assess the transformer’s load and the power grid voltage, closely monitor temperature fluctuations, and promptly consult with relevant personnel.
12.7 Conduct a comprehensive inspection of the transformer every 3 to 5 years, which may include preventive testing to ensure continued reliability and performance.
12.8 The installation, testing, operation, and maintenance of transformers must be performed exclusively by certified professionals to ensure safety and efficacy.

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.