Reliable Transformer with Voltage Regulator for Enhanced 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

Introducing the DRY TYPE TRANSFORMER: Unleashing the Future of Efficient and Safe Power Management Solutions

SPECIFICATION: Unveiling the Core Features and Technical Marvels That Define Our Cutting-Edge Power Solutions

1. Product Description

The series of SCB epoxy resin dry type transformer have the advantage of safety,reliability,energy saving and easy maintenance,From the conditions of economy,safety and applicable environment,this series of transformers has a wide range of application.
The product design is advanced,the process is strict,and the test is perfect.The HV winding is made of 99.9% oxygen-free copper conductor,epoxy network cloth and resin,the LV winding is made of 99.9% oxygen-free copper foil,the iron core is made of high quality and high permeability cold rolled silicon steel sheet and special binding method. Therefore, the product has high mechanical strength and electrical strength, and has very excellent heat dissipation performance, the product has small local discharge, high reliability, long operating life, non-moisture absorption, flame retardant, explosion proof, no pollution, small loss, light weight, automatic temperature control, saving installation space, saving maintenance costs, saving energy and other advantages, can go deep into the load center, It is suitable for urban construction, high-rise buildings, commercial centers, residential areas, entertainment and sports centers, hospitals, tourist buildings, airports, ports, railway stations, subways, highway tunnels, civil air defense facilities, petrochemical enterprises, electrical enterprises, food industry, sewage purification, offshore oil platforms, mines and other places.




2. The use of environmental and working conditions
2.1 The elevation of the installation site shall not exceed 1000m, and the ambient temperature shall not exceed 40 ° C (if this requirement is exceeded, special design can be carried out).
2.2 Operating environment, the relative humidity is 100%, the environment is +40ºC to -25ºC(-25C with on-load switch and temperature controller requirements).
2.3 This product is generally indoor, and the installation site should be clean with no electric dust, no corrosive gas, and have good ventilation conditions. If the installation is in the basement or other places with poor ventilation, the problem of forced ventilation should be considered. This product requires about 3-4m3/min ventilation per 1kw loss (no-load loss + load loss).
2.4 When the product is installed, it should generally be 800mm away from the wall and other obstacles, and there should be a distance of 300mm between adjacent transformers. The above distance can be adjusted when the distribution box and other installation space are limited.
2.5 Under normal circumstances, the transformer can be placed directly on the site of use, and can be put into operation after installation and inspection. For the case of shock-proof and other special requirements, the foundation of the transformer should be installed with bolts, and the transformer should be fixed by bolts and nuts.

3. Main specifications and technical parameters
3.1 Rated frequency :50Hz
3.2 Cooling method :AN or according to user requirements.
3.3 Shell protection level :IP20 or according to user requirements.
3.4 Connection Group label :DynIl or as required by the user.
3.5 Transformer phase sequence: Facing the high voltage side of the transformer from left to right, the high voltage side is ABC and the low voltage side is abc.
3.6 Winding insulation class :F class.
3.7 Insulation Level
Our range of transformers is engineered for outstanding performance with robust voltage withstand capabilities across different power levels. The 10kV product boasts a power frequency withstand voltage of 35kV and can handle impact withstand voltages of up to 75kV. For the 20kV variant, experience enhanced protection with a power frequency withstand voltage of 55kV, coupled with an impressive impact withstand voltage of 125kV. Elevate your power distribution with our 35kV product, featuring a power frequency withstand voltage of 70kV and an exceptional impact withstand voltage of 170kV, ensuring reliability and efficiency.
3.8 Temperature Rise Limit: Our products are meticulously designed to adhere to stringent temperature rise limits, ensuring optimal performance and longevity.
Insulation System Temperature (°C): 155. Experience peace of mind with a maximum temperature rise of 100k, allowing our transformers to operate efficiently within safe thermal parameters.









4.

Product Parameters

SCB
Voltage Class (kV)
Capacity (KVA)
Performance Level Code
The low-voltage coil of our exquisite transformer is wound with copper foil and enveloped in epoxy resin, ensuring elite performance and durability.
Three-phase


5. Product System Description
5.1 Temperature Display and Control System
Embrace cutting-edge technology with our customizable temperature display and control system. Tailored to your needs, it proficiently sends overload alarm signals and automatically displays the temperature for seamless monitoring.
The system is designed to initiate fan operation or halt power supply when the coil's internal temperature surpasses predefined limits, effectively safeguarding the transformer.
5.2 Cooling System
The cooling method employed by our product is air natural cooling (AN), guaranteeing 100% output capacity.; Moreover, forced air circulation cooling (AF) allows for a remarkable 25% long-term and 50% short-term overload capability.
5.3 Protection Level
The standard protection level for this transformer is IP00, which is ideal for indoor settings without an external shell. For indoor use; itcan be equipped with a protective shell,ifdesired by the user, providing IP20 or IP23 protection. Note that a higher protection level may necessitate capacity adjustments during operation.
IP20 housings prevent objects larger than 12mm from entering, thus offering a secure environment. The IP23 upgrade enhances safety by preventing water droplets from entering at a 60° angle.


6. Product Packaging and Transportation
6.1 Products are available in two varieties: open type (without protective cover) and protected type (with a protective shell), suitable for railway, waterway, and highway transportation, with options for partial disassembly transportation. Components like on-load tap changers, temperature controllers, air cooling devices, and protective covers can be packaged separately or transported as a whole. Utilize cranes, winches, or compatible machinery for lifting and unloading.
6.2 To combat the elements during transit, ensure the product is fully covered with waterproof cloth to avert rain damage.
6.3 When hoisting packed products, secure the rope to the sleeper's bottom corners. Elevate products 100mm-150mm with a specialized lifting device, and proceed with lifting once stability is confirmed.
6.4 During transport, maintain the slope of transportation lines under 15° to evenly distribute weight. The product's center of gravity should align with the vehicle's vertical center line to prevent shifting. Securely fasten the product to the transport vehicle, aligning its long axis with the direction of travel to thwart displacement and toppling.
6.5 When handling vehicles without cranes, it's imperative to adhere to strict safety technical requirements. Always verify that the lifting capacity aligns perfectly with the transportation weight of the product to ensure a smooth and secure process.
6.6 For products designed with a car base featuring rollers, it is customary to remove these rollers during transit to maintain stability. Upon reaching the destination, they are reset for installation. Additionally, for products equipped with a trolley, the roller axle can be ingeniously adjusted by 90° to facilitate seamless horizontal or vertical movement, enhancing versatility in product placement.
6.7 Once the product arrives at its destination, minimizing the time it remains in transit condition is crucial, especially when exposed to open air. Ideally, the product should be stored in a covered, dry, and well-ventilated environment prior to installation. Safeguarding the product from mechanical damage and contamination is a top priority.


7. Inspection and Acceptance
7.1 Upon receiving the product, the user should promptly open the shell to conduct a thorough inspection and acceptance. Verify that all items listed in the packing list are present, and meticulously check the transformer for any transportation damage, displacement, or damage to product parts, fasteners' looseness, insulation integrity, and cleanliness of the coil surface.
7.2 Ensure that the details on the product nameplate match the user's specified product specifications, including capacity, voltage level, connection group label, and short-circuit impedance.
7.3 Confirm the completeness of all delivered technical documents.
7.4 If the product will not be put into operation immediately after unpacking, it's vital to repackage it securely and store it indoors to protect against damage and theft.
7.5 During transformer acceptance, the corresponding handover document must be signed with the transportation department, detailing any issues discovered during the inspection.

8. Appearance Inspection Before Installation
8.1 After unpacking, remove the protective device (if present) and inspect the external condition, focusing on the mechanical soundness of the coil and core, the compression level of these components, and the bolts that secure their connections.
8.2 Post-inspection, systematically tighten all fasteners and coil and iron core pressing parts to prevent any potential loosening.
8.3 Carefully disassemble and reassemble the transformer body as per the factory technical conditions and relevant assembly instructions.
8.4 Clear away dust and dirt from the product using dry compressed air or clean rags to maintain its pristine condition.
8.5 If the product has been stored for an extended period and exhibits water beads or significant condensation on its surface, perform a thorough drying treatment until the coil insulation resistance meets the required standards.

9. Inspection and Tests Before Operation
9.1 Accurately measure the DC resistance of both high and low voltage windings, ensuring the results align with the factory test certificate data.
9.2 Verify the iron core grounding, typically located at the lower or upper iron yoke ends, to ensure reliable grounding. Check for any other unnecessary body laps and avoid multiple groundings, which could compromise safety.
9.3 Conduct an insulation resistance test
(Voltage levels) 10kv, 20kv, and 35kv,
between HV coil and LV coil to ensure optimal functionality. ≥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 evaluation, ensure meticulous care in removing the temperature control probe wire from the coil. This simple step is pivotal to protect the internal components of the thermostat from breakdown.
9.5 Conduct a thorough inspection to confirm that the protection system operates seamlessly.
9.6 For optimal installation, position the transformer a minimum of 800mm away from walls and objects to facilitate efficient heat dissipation. Post-installation, connect the ground bolt to the main ground loop to ensure robust grounding.

10, Network operation
10.1 Ensure that the grounding and qualification of all attached protection devices and monitoring systems are certified. Initially, the transformer operates under no-load conditions. Post three cycle shock closing, proceed to check and finetune the protection system to perfection.
10.2 Upon product delivery, connect the voltage regulation tap of the HV side as per the rated position. During operation, any necessary voltage adjustments can be made by aligning the tapping connection with the voltage indicated on the nameplate. Ensure that voltage modifications only occur when the transformer power supply is safely disconnected.
10.3 This transformer utilizes the advanced BWDK series temperature controller. The temperature sensing device is strategically located at the top of the low-voltage coil, providing real-time monitoring and display of each three-phase coil's temperature. When the temperature breaches the preset threshold, the system automatically engages the fan, ceases fan operation, and can initiate alarms or trips. Users can tailor the temperature settings following the thermostat's manual guidance.

11. Maintenance
After a suitable operation period, power down the dry transformer for essential inspections and maintenance procedures.
11.1 Examine the coil, iron core, wire sealing, tap-connecting terminals, and fasteners across different sections for any signs of damage, deformation, looseness, discoloration, overheating, or corrosion. Immediate checks and corrective actions are warranted for any abnormalities detected.
11.2 Carefully dust off the transformer. Surfaces that can be hand-wiped should be cleaned with a dry cloth, avoiding volatile cleaners. Areas within the iron core coil that are difficult to reach should be cleaned using compressed air for a thorough cleanse.
11.3 For transformers equipped with fans, ensure all dust and soil accumulations in the fan are meticulously removed (caution to prevent fan blade deformation). Check the fan bearing's grease, replenishing or replacing it when necessary for continued optimal performance.
11.4 After completing the meticulous inspection and necessary maintenance, it's crucial to exercise heightened vigilance. Before reintegrating the transformer into operational status, ensure an exhaustive check to ascertain that no metal or non-metal foreign objects have infiltrated or remain lodged within the coil, iron core, or insulation components.


12. Security matters
12.1 It is essential that the power supply for the temperature controller (and fan) is sourced through the switch panel, rather than a direct connection to the transformer. 12.2 Prior to activating the transformer, a thorough inspection of the grounding system within the transformer room is paramount, to ensure everything is securely in place.
12.3 Ensure the transformer shell door is securely closed at all times to maintain utmost safety in electrical usage.
12.4 Implement robust measures to prevent small animals from gaining entry into the transformer room, thereby averting potential mishaps.
12.5 Personnel entering the transformer room must don insulating footwear and remain vigilant about maintaining a safe distance from live components, strictly avoiding any contact with the transformer.
12.6 Should there be a sudden surge in transformer noise, immediate action is required. Monitor the transformer's load and the power grid voltage closely, and enhance vigilance over the temperature variations. Promptly seek consultation with skilled personnel when necessary.
12.7 Conduct a comprehensive examination of the transformer every 3-5 years, and consider performing preventive tests during these intervals to ensure continued efficiency and safety.
12.8 The installation, testing, operational procedures, and maintenance of transformers are tasks that must be carried out exclusively by qualified professionals, to guarantee safety and reliability.

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.