Energy-Efficient Transformer for Power Distribution with Compact Design

• 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: Unleashing the Pinnacle of Efficiency and Performance in Power Management

SPECIFICATION: Detailed Insights into Our Cutting-Edge Technology

1. Product Description

Experience unparalleled excellence with our SCB epoxy resin dry-type transformers, designed to redefine safety, reliability, and energy efficiency while offering effortless maintenance. This series shines with economic value and unwavering safety, ensuring peace of mind for all stakeholders. Engineered to thrive in diverse environments, this versatile range of transformers is adaptable to numerous applications, making it the ideal choice for all your power distribution needs.
Crafted with precision and utmost care, our transformers boast a state-of-the-art design and adhere to the most stringent manufacturing processes, ensuring perfection at every stage. With HV windings constructed from 99.9% oxygen-free copper conductor and epoxy resin, and LV windings from oxygen-free copper foil, the product guarantees unmatched mechanical and electrical robustness. Add to this the high-grade cold-rolled silicon steel iron core, and you have a transformer that excels in heat dissipation, keeping local discharges to a minimum. These transformers promise unparalleled reliability, a prolonged lifespan, resilience against moisture, and are designed to be flame retardant and explosion-proof, with no pollution, minimal loss, and lightweight design. Enjoy automatic temperature control, space-saving installation, reduced maintenance costs, and energy efficiency, making it perfect for delving deep into the load center.Perfectly suited for urban development, skyscrapers, commercial hubs, residential zones, entertainment venues, hospitals, tourist attractions, airports, ports, train stations, subways, highway tunnels, and civil engineering infrastructures, as well as petrochemical plants, power supply companies, food processing industries, wastewater treatment facilities, offshore oil rigs, mining sectors, and countless other demanding environments.




2. The Use of Environmental and Working Conditions
2.1 The installation elevation should not exceed 1000m, and the ambient temperature mustremain below 40°C (custom designs are available for environments exceeding these limits).
2.2 The operating environment accommodates up to 100% relative humidity, with temperatures ranging from +40ºC to -25ºC (the latter requiring an on-load switch and temperature controller).
2.3 Typically for indoor use, the installation area must be free from electric dust and corrosive gases and should have excellent ventilation. If situated in a basement or a poorly ventilated location, ensure forced ventilation is addressed. This product requires about 3-4m³/min ventilation per 1kw loss (including both no-load and load losses).
2.4 During installation, maintain an 800mm distance from walls and other barriers, and ensure 300mm spacing between adjacent transformers. These distances may be adjusted when space is limited.
2.5 Generally, transformers can be placed directly at the site and immediately commissioned post-installation and inspection. For special cases requiring shock-proofing, use bolts to secure the foundation, ensuring the transformer is firmly fixed using bolts and nuts.

3. Main 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 requirements.
3.4 Connection Group Label: DynIl or as specified by the user.
3.5 Transformer Phase Sequence: Facing the high voltage side, the sequence runs ABC for high voltage and abc for low voltage.
3.6 Winding Insulation Class: F Class.
3.7 Insulation Level
Our cutting-edge Energy-Efficient Transformer for Power Distribution boasts top-tier performance standards: - For 10kV products, it delivers a remarkable power frequency withstand voltage of 35kV and a robust impact withstand voltage of 75kV. - The 20kV products are engineered to deliver an impressive power frequency withstand voltage of 55kV and an outstanding impact withstand voltage of 125kV. - Our 35kV products are designed to provide a superior power frequency withstand voltage of 70kV and an exceptional impact withstand voltage of 170kV.
3.8 Experience the Excellence of Our Temperature Rise Limit:
Our innovative Insulation System is rated at a temperature limit of 155°C, ensuring optimal performance. With a maximum temperature rise of 100K, our transformers are designed to maintain efficiency and reliability even under demanding conditions.









4.

Product Parameters

SCB
Voltage Class (kV):
Capacity (KVA):
Performance Level Code:
The low-voltage coil is meticulously crafted with copper foil and coated with epoxy resin for optimal performance.
Three-phase design for enhanced efficiency.


5. Product System Description
5.1 Temperature Display and Temperature Control System
Tailored to user specifications, this product boasts a temperature display and control system designed to: (1) Trigger overload alerts and automatically showcase current temperatures.
(2) Proactively manage system health by activating fans or disconnecting power when internal temperatures exceed preset limits.
5.2 Cooling System
The cooling method employed is: Air Natural Cooling (AN), ensuring 100% output capacity.; Additionally, Forced Air Circulation Cooling (AF) allows for long-term overload capability of up to 25% and short-term overloads of 50%.
5.3 Protection Level
The standard protection level for this transformer is IP00. While it does not include an outer shell, it is particularly suitable for indoor use; it can be outfitted with a protective shell,if required,shouldusers desire IP20 or IP23 protection. For high protection levels, consider potential capacity reductions.
Important: An IP20 housing safeguards against solid objects over 12mm, providing essential safety for live components. The IP23 enhancement further prevents water ingress at a 60° angle, ensuring robust protection.


6. Product Packaging and Transportation
6.1 Our products are available in two variants: open type (without a protective cover) and protected type (featuring a shell). Standard transport modes include railway, waterways, and highways. If necessary, components can be partially disassembled for transit (e.g., on-load tap changer, temperature controller, air cooling apparatus, protective cover, etc., must be separately packaged) or transported wholly in a secure packing box. Employ cranes, winches, or suitable machinery for safe loading and unloading.
6.2 During transit, ensure products are shielded with waterproof coverings to prevent rain damage.
6.3 When lifting boxed products, attach ropes to the four corner sleepers at the base. Elevate the packaged units 100mm-150mm off the ground using specialized lifting gear and proceed once stability is confirmed.
6.4 During transport, maintain the grade of the route to within 15° slopes to evenly distribute the load. Position the product’s center of gravity along the vehicle's vertical center line during loading. Securely fasten the product to the transport vehicle to prevent movement or tipping.
6.5 When handling vehicles without the aid of cranes, it's imperative to adhere to stringent safety technical standards. Ensure that the lifting capacity aligns perfectly with the product's transportation weight, safeguarding both the product and personnel involved.
6.6 For secure transport, the product is ideally paired with a vehicle, with its base equipped with removable rollers. During transit, these rollers are detached to maintain stability and are reattached upon reaching the installation site. For products with trolleys, the roller axles can be rotated 90° to allow versatile movement, either horizontally or vertically, as needed.
6.7 Once the product arrives at its destination, minimize its outdoor storage time in its transport configuration. Prioritize parking in covered, dry, and well-ventilated areas to prevent exposure to elements. Implement protective measures to guard against mechanical damage and contamination, ensuring product integrity.


7. Inspection and Acceptance
7.1 Upon receipt, the user is advised to promptly open the shell for thorough inspection and acceptance. Verify the completeness of items listed in the packing list, assess the transformer for any transport-induced damages, check for displaced or damaged parts, loose fasteners, insulation damage, and any dirt on the coil surface to ensure all is in pristine condition.
7.2 Confirm that the product nameplate data aligns with the user's locked specifications, including capacity, voltage level, connection group label, and short-circuit impedance, ensuring compliance with customer requirements.
7.3 Ensure that all technical documentation delivered with the product is comprehensive and complete, facilitating seamless integration and operation.
7.4 If immediate deployment is not planned post-unpacking, repack the product meticulously and store it in a secure indoor location to avert potential damage or theft, preserving its condition.
7.5 For the transformer acceptance, it is essential to sign a corresponding handover document with the transport department. This document should precisely note any issues identified during the inspection, providing a clear record for accountability and resolution.

8. Appearance Inspection Before Installation
8.1 Upon unpacking, remove any protective devices and conduct a meticulous external inspection. Pay particular attention to the mechanical integrity and compression of the coil and core, ensuring tight bolt connections for optimal performance. bolts outside the connection.
8.2 Post-inspection, systematically retighten all fasteners, as well as the coil and iron core pressing components, ensuring no looseness to maintain structural stability.
8.3 Disassemble and reassemble the transformer body following factory technical conditions and relevant assembly instructions to guarantee precise and safe setup.
8.4 Thoroughly clean the product using dry compressed air or clean rags, removing any dust or dirt to maintain operational efficiency and cleanliness.
8.5 For transformers subject to extended storage, inspect for moisture or condensation. Perform a drying treatment as required to restore coil insulation resistance to acceptable levels, ensuring reliable functionality.

9. Inspection and Test Before Operation
9.1 Conduct a DC resistance measurement of both high and low voltage windings to verify consistency with factory test certificate data, ensuring operational reliability and efficiency.
9.2 Inspect the iron core grounding. Verify the reliability of the ground lug, typically located at the lower or upper iron yoke ends, to ensure effective grounding and to check for any accidental other body laps, and scrutinize for multiple grounding occurrences to ensure electrical safety standards are met.
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 ≥500 MΩ ≥800 MΩ ≥1000 MΩ
LV to Ground ≥50MΩ ≥50MΩ ≥50MΩ
Core to Ground ≥5MΩ ≥5MΩ ≥5MΩ
9.4 During external construction frequency voltage resistance tests, it is crucial to pay keenattention to removing the temperature control probe wire from the coil to prevent any potential breakdown of the internal components of the thermostat.
9.5 Ensure that the protection system is operating normally.
9.6 Install the transformer at a minimum distance of 800mm from walls and any objects that could hinder proper heat dissipation. Once installed, be sure to connect the ground bolt to the main ground loop to ensure reliable grounding.

10, Network Operation
10.1 Once the attached protection device and monitoring system are properly grounded and verified, initiate the transformer under no-load conditions. After three successive shock closings, thoroughly inspect and calibrate the protection system as necessary.
10.2 Post-delivery, connect the voltage regulation tap position of the HV side according to its rated position. Should there be a need for voltage adjustments during operation, execute the corresponding tapping connection based on the tapping voltage indicated on the product nameplate. If voltage regulation without excitation is required, ensure it is performed only when the transformer power supply is cut off.
10.3 The transformer features the advanced BWDK series temperature controller. The temperature sensing element is strategically positioned at the upper end of the low-voltage coil, enabling automatic detection and display of each phase's working temperature. When the coil's temperature reaches a set threshold, the thermometer autonomously manages fan operation, alarms, trips, and stops the fan, allowing users to adjust settings as per the thermostat manual.

11. Maintenance
After a designated runtime period, it is essential to disconnect the dry transformer to perform a series of vital checks and maintenance procedures.
11.1 Inspect the coil, iron core, wire sealing, tap-connecting terminals, and fasteners for any signs of damage, deformation, loosening, discoloration, overheating, and corrosion. Address any abnormalities by investigating operational damage and implementing necessary corrective measures.
11.2 Thoroughly clean the transformer. Wipe all accessible parts using a dry cloth, refraining from volatile cleaners. Utilize compressed air to meticulously clean areas within the iron core coil that are challenging to reach.
11.3 For transformers equipped with fans, ensure to remove dust and accumulated soil. Exercise caution to avoid fan blade deformation due to damage. Additionally, assess the fan bearing's grease level and replenish or replace if required.
11.4 After completing the meticulous inspection and maintenance procedures, prior to reactivating the transformer, it is imperative to meticulously examine the device to ensure that no metal or non-metal foreign objects have inadvertently fallen into or remain within the coil, iron core, or insulation components. This careful check ensures optimal performance and safety.


12. Security Considerations
12.1 The power supply for the temperature controller and fan must be connected via the switch panel, not directly to the transformer, ensuring a safe and controlled power flow. 12.2 Prior to energizing the transformer, a thorough inspection of the grounding system within the transformer room is critical to avert potential hazards.
12.3 Ensure the transformer enclosure door remains securely closed at all times to uphold the highest standards of electrical safety.
12.4 The transformer room should be equipped with effective measures to prevent the entry of small animals, thereby mitigating the risk of accidental disruptions or safety incidents.
12.5 Personnel entering the transformer room are required to wear insulated footwear, maintain an appropriate safety distance from live components, and refrain from any contact with the transformer to ensure personal safety.
12.6 In the event of a sudden increase in transformer noise, immediate attention should be directed towards assessing the transformer load and the voltage of the power grid. It is crucial to closely monitor temperature variations and promptly consult with the relevant technical personnel.
12.7 Comprehensive checks of the transformer should be conducted every 3-5 years, during which preventative tests should also be performed to ensure continued reliability and functionality.
12.8 It is essential that the installation, testing, operation, and maintenance of transformers are carried out exclusively by qualified professionals, ensuring adherence to safety and technical standards.

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.