Premium Ee Type Transformer for Reliable Power Distribution Systems

• 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: This cutting-edge transformer, crafted with precision and expertise, promises to deliver exceptional performance while maintaining superior safety and efficiency in a variety of applications. Ideal for those seeking reliable and cost-effective solutions to power distribution, our dry type transformer stands at the forefront of innovation and quality.

SPECIFICATION: Our Premium EE Type Transformer is meticulously designed to meet high industry standards, ensuring robust and reliable power distribution. With a focus on longevity and peak performance, it serves as a cornerstone in efficient energy management, embodying the latest technological advancements for optimal operation and unwavering dependability.

1. Product Description

The distinguished SCB epoxy resin dry type transformer series prides itself on unparalleled safety, unwavering reliability, energy efficiency, and hassle-free maintenance. Designed with the perfect blend of economic and safety considerations, this versatile series is suitable for a spectrum of environments, making it the ideal solution for diverse applications.
With state-of-the-art design and meticulous manufacturing processes, each transformer undergoes rigorous testing. The high voltage (HV) winding is crafted from 99.9% oxygen-free copper conductor complemented by epoxy network cloth and resin. Similarly, the low voltage (LV) winding utilizes 99.9% oxygen-free copper foil. Constructed from premium high permeability cold rolled silicon steel sheets with a special binding method, this transformer boasts superior mechanical and electrical strength coupled with exceptional heat dissipation. Experience minimal local discharge, unmatched reliability, and an extended operational lifespan, resistance to moisture, flame retardancy, explosion proofing, eco-friendly attributes, minimal energy loss, lightweight design, automated temperature regulation, space-saving installation, reduced maintenance costs, and remarkable energy conservation. Capable of being installed at the heart of the load center,it seamlessly integrates into urban infrastructure, high-rise edifices, commercial hubs, residential complexes, leisure and sports venues, healthcare facilities, tourist attractions, airports, seaports, railway terminals, subways, highway tunnels, civil defense installations, petrochemical industries, power enterprises, the food sector, waste treatment plants, offshore oil rigs, mining operations, and beyond.




2. The Use of Environmental and Working Conditions
2.1 The installation altitude must not surpass 1000m, and the ambient temperature should not exceed 40°C (provisions for special designs are available if exceeded).2.2 Operating environment mandates a relative humidity of 100% within a temperature range of +40ºC to -25ºC (with on-load switch and temperature controller stipulations for -25ºC).
2.3 Primarily an indoor product, the installation site should be free from electric dust and corrosive gases, and should ensure adequate ventilation. If installed in areas like basements with limited airflow, forced ventilation solutions are advisable. Approximately 3-4m³/min
of ventilation is necessary for each 1kw ofloss (combined no-load and load loss).
2.4 Installation requires a standard clearance of 800mm from walls and other obstacles,with a 300mm gap between adjacent transformers, adjustable based on distribution box constraints and other spatial limitations.
2.5 Typically, the transformer is placed directly at its intended location and is ready for operation post installation checks. For installations demanding shock-proofing or special conditions, secure the transformer to its foundation with bolts, using bolts and nuts for fixation.

3. Main Specifications and Technical Parameters
3.1 Rated Frequency:50Hz
3.2 Cooling Method: AN or tailored to client specifications.
3.3 Enclosure Protection Level: IP20 or customized as per client needs.
3.4 Connection Group Designation: DynIl or user specified.
3.5 Transformer Phase Sequence: Observed 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
Our remarkable Premium EE Type Transformers stand out in the industry with their exceptional voltage withstand capabilities! For our 10kV product, experience a power frequency withstand voltage of 35kV and an impressive impact withstand voltage of 75kV. Our 20kV product takes it a notch higher with a power frequency withstand voltage of 55kV and a remarkable impact withstand voltage of 125kV. The 35kV product is engineered to perfection, boasting a power frequency withstand voltage of 70kV and a robust impact withstand voltage of 170kV.
3.8 Elevate your expectations with our meticulously engineered temperature rise limit:
Discover the resilience of our insulation system withstanding temperatures up to a notable 155°C and a maximum temperature rise of 100K, ensuring peak performance and reliability throughout.









4.

Product Parameters

SCB
Voltage class kv
Capacity KVA
Performance level code
The low-voltage coil features a robust copper foil wound in epoxy resin pouring, ensuring superior durability and efficiency.
three-phase


5. Product System Description
5.1 Temperature Display and Temperature Control System
Tailored to user requirements, this product offers an advanced temperature display and control system, poised to: (1) emit an overload alarm signal and provide real-time temperature display for optimal safety.
(2) Activate cooling fans and cease power supply when coil temperatures exceed preset thresholds, thus safeguarding the transformer from overheating.
5.2 Cooling System
The cooling method employed is air natural cooling (AN), ensuring the output capacity remains at a steadfast 100%; while forced air circulation cooling (AF) accommodates long-term overloads of 25% and short-term surges up to 50%, maximizing performance during peak demands.
5.3 Protection Level
The standard protection rating of this product is IP00, designed for indoor applications without a protective shell, necessitating indoor utilization; It can be fitted with a protective shell,if required by the user, with options for IP20 or IP23 ratings (note: higher transformer protection levels may necessitate capacity adjustments).
Note: The IP20 casing effectively blocks solid objects over 12mm, safeguarding live components. Additionally, the IP23 rating extends protection against water drops up to a 60° vertical angle.


6. Product Packaging and Transportation
6.1 Products are classified into two categories: open type (without protective cover) and protected type (featuring a shell), suitable for railway, waterway, and highway transportation. When necessary, components may be disassembled for easier transport (i.e., on-load tap changer, temperature controller, air cooling device, and protective cover requiring separate packaging) or shipped fully assembled in a packing box. Utilize cranes, winches, or other suitable machinery for efficient product handling.
6.2 During transit, ensure the product is covered with a waterproof cloth to shield it from rain and moisture.
6.3 When lifting products in packing boxes, secure ropes to the bottom four corner sleepers. Use specialized lifting devices to elevate packaged products 100mm-150mm off the ground safely before executing the final lift.
6.4 Maintain transportation slopes under 15° to distribute vehicle load evenly. Position the product's center of gravity along the vehicle's vertical center line when loading. Securely fasten the product to prevent movement and toppling during transit, aligning the product's long axis with the direction of travel.
6.5 For vehicles without cranes, adhere to all safety technical requirements. Verify the lifting capacity is compatible with the product's transportation weight to ensure safe handling.
6.6 The user requires that the product includes a trolley, with rollers at the bottom that are typically removed during transit to maintain stability. Upon reaching the destination, these rollers are reattached before installation. For products with a trolley, the roller axles at each frame end can be adjusted to a 90° angle, allowing for horizontal or vertical movement. This flexibility enhances the ease of transportation and installation.
6.7 Once the product arrives at its destination, the duration it remains in transport mode should be minimized, especially if exposed to outdoor conditions. Ideally, prior to installation, it should be stored in a covered, dry, and well-ventilated area. Take necessary precautions to shield the product from mechanical damage and contamination, ensuring it remains in pristine condition.


7. Inspection and acceptance
7.1 Upon receiving the product, it's crucial for the user to promptly open the shell for thorough inspection. Confirm all items on the packing list are present, assess for any transportation-induced damage to the transformer, check for damage or displacement of components, ensure fasteners are secure, verify insulation integrity, and confirm the cleanliness of the coil surface. This meticulous check guarantees product readiness.
7.2 Verify that the data on the product nameplate matches the user's specified product details, including specifications, capacity, voltage level, connection group label, and short-circuit impedance. This confirmation is vital for ensuring product compatibility and performance.
7.3 Confirm the completeness of the delivery technical documentation. Comprehensive documentation is essential for understanding the product's operation and maintenance requirements.
7.4 If the product will not be immediately operational post-unpacking, it should be repackaged and stored indoors safely to prevent potential damage and theft, thus maintaining its integrity.
7.5 During transformer acceptance, ensure a handover document is signed with the transport department, clearly noting any issues found during inspection. This document formalizes the transfer and provides a basis for accountability.

8. Appearance inspection before installation
8.1 After unpacking, remove any protective devices and inspect the external condition of the product, focusing on the mechanical integrity and compression level of the coil and core. Ensure all external bolts are tightly secured to maintain structural integrity. bolts outside the connection.
8.2 Post-inspection, all fasteners and coil and iron core pressing parts must be retightened sequentially, preventing any potential loosening which could compromise product stability and safety.
8.3 Follow the factory's technical guidelines and relevant assembly instructions to disassemble and reinstall the transformer body, ensuring compliance and accuracy in assembly.
8.4 Use dry compressed air or clean rags to meticulously clean dust and dirt from the product, maintaining its condition and ensuring optimal performance.
8.5 If the transformer has been stored for an extended period and shows signs of moisture or condensation, conduct a drying process until coil insulation resistance meets qualification standards. This step is crucial for ensuring electrical safety and effectiveness.

9. Inspection and test before operation
9.1 Measure the DC resistance of both high and low voltage windings, verifying that the readings align with those recorded in the factory test certificate. This ensures the transformer is functioning correctly and efficiently.
9.2 Inspect the iron core grounding, typically found at the lower or upper iron yoke end, to ensure reliable grounding and check for any unauthorized body overlaps or multiple grounding points. These checks are vital for safety and performance. other body lap, and whether there is multiple grounding.
9.3 Test the insulation resistance
(Voltage level) 10kv 20kv 35kv
HV coil to LV coil ≥500 MΩ ≥ 800 MΩ ≥ 1000 MΩ
HV coil to Ground Desirable insulation resistance of the HV coil to ground is set at a robust and formidable value of ≥500 MΩ, ensuring premier safety and performance. The insulation resistance between the HV coil and the ground is impressively set at ≥800 MΩ, further safeguarding the integrity of your power distribution system. Featuring a superior insulation standard, the HV coil to ground boasts an exemplary resistance of ≥1000 MΩ, epitomizing reliability.
LV to Ground For optimal safety, the LV coil to ground maintains a minimum insulation resistance of ≥50MΩ, securing system durability. With an insulation resistance of ≥50MΩ, the LV to ground connection ensures effective protection against faults. Exhibiting outstanding performance, the LV to ground resistance holds firm at ≥50MΩ for consistent reliability.
Core to Ground Maintaining a solid insulation resistance of ≥5MΩ, the core to ground connection is designed for steadfast performance. With a dependable resistance of ≥5MΩ, the core to ground insulation provides robust protection. Ensuring safety and efficacy, the core to ground resistance is set at ≥5MΩ, a hallmark of dependable design.
9.4 When performing external construction frequency voltage resistance, special consideration should be paid to carefully remove the temperature control probe wire from the coil. This precaution prevents any potential breakdown of the internal components of the thermostat, safeguarding its functionality.
9.5 Conduct a thorough check to verify whether the protection system is operating normally, ensuring optimal security.
9.6 The transformer installation requires at least an 800mm clearance from walls or nearby objects to enhance heat dissipation. Once installed, ensure to connect the ground bolt to the general ground loop for a reliable and secure grounding system.

10, Network operation
10.1 Upon ensuring the grounding and qualification of the protection device and monitoring system, initiate transformer operation under no-load conditions. After executing three shock closings, meticulously inspect and adjust the protection system if necessary.
10.2 After delivery, the voltage regulation tap position on the HV side must be connected according to its rated position. During operation, voltage adjustments are necessary and should be performed per the tapping voltage details on the product name plate. Note that voltage changes must only be executed with the transformer power fully disconnected.
10.3 The transformer utilizes the advanced BWDK series temperature controller. Its temperature measuring elements, strategically placed at the upper end of the low-voltage coil, automatically detect and display the operational temperature of each phase coil. If the coil temperature surpasses the predetermined threshold, the thermometer can autonomously activate cooling fans, halt them, initiate alarms, or trip the system. Users can adjust these temperature settings according to the thermostat manual, ensuring tailored and efficient thermal management.

11. Maintenance
After a designated operational period, ensure the dry transformer is disconnected for essential inspections and maintenance tasks to uphold its efficiency and reliability.
11.1 Diligently examine the coil, iron core, wire sealing, tap-connecting terminals, and fasteners for any signs of damage, deformation, loosening, discoloration, overheating, or corrosion. In the event of any abnormalities, investigate for operational damage and apply corrective measures as needed.
11.2 Remove dust from the transformer surfaces. Utilize a dry cloth to clean accessible parts, avoiding volatile cleaners. For parts within the iron core coil that are harder to reach, use compressed air to ensure thorough cleaning.
11.3 If the transformer includes a fan, remove any dust and soil accumulations from the fan units. Take care to prevent damage-induced deformation of the fan blades. Check the fan bearing grease and supplement or replace as necessary to maintain efficient operation.
11.4 After completing inspection and maintenance, conduct a final check before reactivating the transformer to ensure no metal or non-metal foreign objects remain in the coil, iron core, or insulation components.


12. Security matters
12.1 It is imperative that the power supply to the temperature controller, as well as the fan, is sourced through the designated switch panel. Avoid any direct connections to the transformer to maintain optimal functionality and safety. 12.2 Prior to energizing the transformer, ensure a meticulous inspection of the grounding system within the transformer room to guarantee robust safety standards.
12.3 Always ensure that the door of the transformer enclosure is securely closed. This precaution is vital for maintaining the utmost safety in the use of electricity and preventing unauthorized access.
12.4 Implement effective measures within the transformer room to deter the entry of small animals. This is crucial to prevent any unforeseen accidents or operational disruptions.
12.5 Personnel entering the transformer room should don insulating shoes and maintain a prudent distance from live components to uphold safety protocols. Under no circumstances should they come into contact with the transformer to prevent any risk of injury.
12.6 In the event of a sudden increase in transformer noise levels, it is essential to promptly assess the transformer's load and the voltage of the power grid. Pay close attention to any variations in the temperature of the transformer. Timely consultation with relevant personnel is advised for thorough evaluation and action.
12.7 Regular scrutiny of the transformer is advised, with a comprehensive check scheduled every 3-5 years. During these intervals, executing preventive tests is highly recommended to anticipate potential issues.
12.8 Only qualified professionals should undertake the intricate processes of transformer installation, testing, operation, and maintenance. Their expertise is invaluable in ensuring the transformer operates safely and efficiently.

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.