Compact Design Ee Type Transformer for Power Efficiency and Reliability

• 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: Introducing our premier solution for power distribution - the Dry Type Transformer. Engineered for excellence, this transformer provides unmatched durability and efficiency, ensuring robust performance in all environments. Designed with the latest technology, it promises minimal maintenance and maximum output, making it an indispensable asset for your electrical applications.

SPECIFICATION: Delve into the comprehensive specifications of our innovative transformer. Every detail has been meticulously crafted, ensuring that each component delivers superior efficiency and reliability. Featuring cutting-edge materials and state-of-the-art engineering, our transformer stands as a beacon of quality and innovation. Explore the remarkable specifications that set it apart as a leader in the industry.

1. Product Description

Introducing the exceptional SCB series of epoxy resin dry-type transformers, designed with an uncompromising commitment to safety, reliability, energy efficiency, and effortless maintenance. Meticulously engineered for optimal economic benefits and unparalleled safety, these transformers perfectly cater to diverse environmental needs. These transformers boast a versatile range of applications, adeptly accommodating various installation environments.
Crafted with innovative design, stringent manufacturing processes, and comprehensive testing, this product exemplifies excellence. The HV winding is constructed with 99.9% pure oxygen-free copper conductor, epoxy network cloth, and resin. The LV winding utilizes 99.9% pure oxygen-free copper foil. The core is created from high-quality, high-permeability cold-rolled silicon steel sheets, paired with a unique binding method, resulting in exceptional mechanical and electrical strength and superior heat dissipation. Additionally, the transformer ensures minimal local discharge, robust reliability, extended operational lifespan, resistance to moisture absorption, flame retardancy, explosion proof capabilities, eco-friendliness, low energy loss, lightweight design, automatic temperature regulation, and space-saving attributes. It significantly reduces installation and maintenance costs, while promoting energy efficiency. This versatile transformer can seamlessly integrate into the load center, making it ideal forurban developments, skyscrapers, bustling commercial centers, serene residential areas, vibrant entertainment and sports venues, advanced hospitals, luxurious tourist accommodations, expansive airports, bustling ports, dynamic railway stations, intricate subways, extensive highway tunnels, crucial civil defense infrastructures, cutting-edge petrochemical and electrical enterprises, thriving food industries, essential sewage purification plants, offshore oil platforms, and rugged mining operations.




2. Environmental and Operational Conditions
2.1 The installation site must not exceed an elevation of 1000m, with ambient temperatures remaining below 40°C. Should these conditions vary, customization is available.ll not exceed 40 ° C (if this requirement is exceeded, special design can be carried out).
2.2 Enjoy an operational environment with 100% relative humidity, comfortably spanning temperatures from +40°C down to -25°C, adhering to on-load switch and temperature controller specifications.
2.3 Primarily designed for indoor use, the installation area should be pristine, devoid of electrical dust and corrosive gases, with effective ventilation. For installations in areas with inadequate ventilation like basements, consider implementing forced ventilation. Maintain approximately 3-4m3/min ventilation per 1kw loss (no-load loss + load loss).
2.4 Ensure a minimum clearance of 800mm from walls and other obstacles, with a 300mm gap between adjacent transformers. These distances are adjustable in constrained installation spaces like distribution boxes.
2.5 Typically, transformers can be directly placed at the intended site and operational post-installation and inspection. For environments demanding shock resistance or other unique requirements, secure the foundation with bolts and firmly fasten the transformer. bolts and nuts.

3. Key Specifications and Technical Details
3.1 Rated Frequency:50Hz
3.2 Cooling Method: Utilizes AN or can be customized per user specifications.
3.3 Shell Protection Level: IP20 or tailored to client needs.
3.4 Connection Group Label: DynIl or as specified by the customer.
3.5 Transformer Phase Sequence: Viewing from the high voltage side, the sequence is ABC for high voltage and abc for low voltage.
3.6 Winding Insulation Class: F class.
3.7 Insulation Level
Step into a realm of unparalleled power and resilience with our cutting-edge transformers. For our 10kV product, expect a commendable power frequency withstand voltage of 35kV and an impressive impact withstand voltage of 75kV. The 20kV variant boasts a superior power frequency withstand voltage of 55kV, with an impact withstand voltage reaching up to 125kV. For the 35kV product, experience unmatched strength with a power frequency withstand voltage of 70kV and a formidable impact withstand voltage of 170kV.
3.8 Temperature Rise Limit: Unveiling optimal performance stability and durable endurance.
Insulation System Temperature: Our sophisticated system operates efficiently with an insulation temperature of up to 155°C, ensuring reliability. The maximum temperature rise is maintained at 100K, promising consistent performance even under demanding conditions.









4.

Product Parameters

SCB
Voltage class kv
Capacity KVA
Performance level code
The low-voltage coil is crafted from copper foil and meticulously wound using epoxy resin pouring.
Three-phase


5. Product System Description
5.1 Advanced Temperature Display and Control System
Tailored to user specifications, this product is equipped with a sophisticated temperature display and control system, designed to: (1) emit overload alarm signals and automatically showcase the temperature.
(2) If the internal coil temperature surpasses set limits indicated by the thermometer, it facilitates automatic fan operations and power disconnection, effectively isolating the transformer.
5.2 Innovative Cooling System
The cooling method employed is air natural cooling (AN), enabling 100% output capacity; with forced air circulation cooling (AF) supporting long-term overload up to 25% and short-term overload up to 50%.
5.3 Robust Protection Level
Generally, this product boasts a protection level of IPO0. It is not supplied with a protective shell, necessitating indoor usage; Itcan be paired with a protective shell,ifthe customer requires, with IP20 or IP23 options (consider capacity reduction for high protection levels).
Note: An IP20 enclosure impedes entry of solid objects over 12mm, providing a safety shield for live components. The IP23 shell, in addition to IP20 features, prevents water droplets from entering at a 60° vertical angle.


6. Product Packaging and Transportation
6.1 Products are categorized into open type (without cover) and protected type (with protective shell), primarily transported via railway, waterway, or highway. When necessary, partial disassembly is possible (components like on-load tap changer, temperature controller, air cooling device, protective cover must be separately packaged) or completely boxed. Utilize cranes, winches, or suitable machinery for lifting and unloading.
6.2 Ensure waterproof coverage during transit to protect against rain damage.
6.3 When lifting products with packing boxes, attach ropes to the corner sleepers of the box bottom. Elevate the packaged product 100mm-150mm from the ground using specialized lifting equipment, proceeding with the lift only when no abnormalities are observed.
6.4 During transit, the transport path should not exceed a 15° gradient to maintain even load distribution. Ensure the product's center of gravity aligns with the vehicle's vertical center line during loading. Secure the product to prevent shifting or toppling, aligning the long axis with the direction of travel.
6.5 When loading and unloading without cranes, comply with safety requirements, verifying lifting capacity matches the product's transport weight.
6.6 The user requires that the product be accompanied by a trolley, equipped with rollers for smooth transit. During transportation, these rollers are typically removed to ensure the utmost stability of the product transport. Upon arrival at the destination, the rollers are reattached. For products featuring a trolley, the axle of the rollers on both ends of the frame can be adjusted to a 90° orientation, facilitating effortless horizontal or vertical movement.
6.7 Once the product reaches its destination, it is imperative to minimize the duration it remains in a transportation state, especially if it is exposed to the elements. To preserve the product's integrity, it should be placed in a covered, dry, and ventilated environment before installation. Protective measures must also be employed to guard against mechanical damage and contamination.


7. Inspection and Acceptance
7.1 Upon receiving the product, the user should promptly open the shell to conduct a thorough inspection and acceptance process. This includes verifying that all items listed in the packing list are present, ensuring the transformer has not suffered damage during transit, checking for any displaced or damaged parts, confirming fasteners are secure, examining insulation for damages, and ensuring the coil surface is clean.
7.2 Confirm that the data on the product nameplate aligns precisely with the user's specified product requirements, including capacity, voltage level, connection group label, and short-circuit impedance.
7.3 Verify that all delivery technical documents are complete and present.
7.4 If the product will not be utilized immediately post-unpacking, it is essential to repackage and store it securely indoors to avert any potential damage or theft.
7.5 For the official acceptance of the transformer, a handover document must be signed with the transportation department, detailing any issues discovered during the inspection.

8. Appearance Inspection Before Installation
8.1 Once the packing case is opened, remove any protective device, if present, and thoroughly inspect the external condition. Pay particular attention to the mechanical integrity and compression level of the coil and core, along with the tightness of the bolts outside the connection.
8.2 Following the inspection, all fasteners, as well as the coil and iron core pressing components, should be sequentially tightened to prevent any loosening.
8.3 Disassemble and reassemble the transformer body following the factory's technical guidelines and related complete assembly instructions.
8.4 Employ dry compressed air or clean rags to remove dust and dirt from the product.
8.5 If the transformer has been stored for an extended period and moisture or significant condensation is present on its surface, a drying treatment must be conducted until the coil's insulation resistance is deemed satisfactory.

9. Inspection and Testing Before Operation
9.1 Conduct measurements of the DC resistance for both the high and low voltage windings to ensure the data matches the specifications in the factory test certificate.
9.2 Verify the grounding of the iron core (typically located at the end of the lower or upper iron yoke) to ensure reliable grounding, absence of other body laps, and no instances of multiple grounding.
9.3 Perform insulation resistance tests
(Voltage Level) 10kv 20kv 35kv
HV Coil to 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 When performing external construction frequency voltage resistance, special care should be taken to removethe temperature control probe wire, carefully detaching it from the coil to prevent any potential breakdown of the thermostat's internal components.
9.5 Verify that the protection system operates normally, ensuring optimal safety and efficiency.
9.6 For optimal installation, maintain a minimum distance of 800mm between the transformer and any walls or objects that could hinder heat dissipation. Once installed, securely connect the ground bolt to the main grounding loop for assured grounding.

10, Network operation
10.1 Ensure the attached protection devices and monitoring systems are properly grounded and certified. Begin operation with a no-load test, and after three sequential shock closings, evaluate and fine-tune the protection system to guarantee optimal performance.
10.2 Once the product is delivered, the voltage regulation tap on the HV side should be aligned with the rated position. Should voltage adjustments be necessary during operation, adjust the tapping connection in accordance with the voltage specifications detailed on the product's nameplate. Ensure that voltage adjustments are conducted only after disconnecting the transformer power supply. HV side is connected according to the rated position. The voltage adjustment is required during operation, and the corresponding tapping connection can be carried out according to the tapping voltage indicated on the product name plate (when there is no excitation voltage regulation), and the voltage must be carried out in the case of cutting off the transformer power supply.
10.3 Utilizing the advanced BWDK series temperature controller, the transformer monitors and regulates temperature with precision. The temperature sensors are strategically positioned at the upper end of the low-voltage coil to monitor the working temperature of each phase. When the coil temperature surpasses the set threshold, the system can autonomously activate or deactivate the fan, issue alarms, and trip as necessary. Users can fine-tune the set temperature based on the thermostat manual for tailored operation.

11. Maintenance
After a specified operational period, it is crucial to disconnect the dry transformer for thorough inspections and maintenance to ensure longevity and efficiency.
11.1 Conduct a comprehensive inspection of the coil, iron core, wire sealing, tap-connecting terminals, and fasteners across all sections. Look for signs of damage, deformation, loosening, discoloration, overheating, or corrosion. Any anomalies detected should be meticulously evaluated for operational impact and addressed with appropriate corrective actions.
11.2 Ensure the transformer is free from dust by wiping all accessible parts with a dry cloth. Avoid using volatile cleaners. For internal areas such as the iron core coil that are challenging to reach, utilize compressed air for effective cleaning.
11.3 For transformers equipped with a fan, it is vital to remove any dust or soil buildup within the fan. Take care to prevent fan blade deformation. Inspect the fan bearing's lubrication and replenish or replace the grease if necessary to maintain seamless operation.
11.4 Prior to reactivating the transformer post-maintenance, conduct a meticulous check to ensure no metallic or non-metallic foreign objects have been left within the coil, iron core, or insulation components.


12. Security matters
12.1 It is imperative that the power supply for the temperature controller and fan be routed through the switch panel, rather than being directly connected to the transformer. 12.2 Prior to putting the transformer into service, a thorough inspection of the transformer's room grounding system is paramount.
12.3 Ensure the door of the transformer enclosure is securely closed to guarantee safe and secure electrical usage.
12.4 The transformer room must possess preventive measures to deter small animals from entering, thereby avoiding potential accidents.
12.5 Personnel entering the transformer room are required to wear insulating footwear, maintain a safe distance from live components, and avoid any direct contact with the transformer.
12.6 Should the transformer's noise levels escalate suddenly, immediate attention must be given to assessing the transformer's load and the power grid voltage. Enhanced monitoring of the transformer's temperature fluctuations is crucial, and timely consultation with relevant personnel is advised.
12.7 It is advisable for the transformer to undergo a comprehensive inspection every 3-5 years, during which preventive tests can also be conducted.
12.8 The installation, testing, operation, and maintenance of transformers must be carried out exclusively by qualified professionals, ensuring top-notch 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.