80kVA Oil Immersed Transformer
NPC ELECTRIC 80kva Oil Immersed Transformer boasts a robust design that incorporates high-quality materials and advanced manufacturing techniques. The transformer's core is made from premium cold-rolled silicon steel sheets, ensuring low loss and high efficiency. The windings are constructed using high-grade copper wire, which is carefully insulated to prevent short circuits and ensure long-term reliability.
The oil-immersed design of the NPC ELECTRIC 80kVA transformer provides effective cooling and insulation, ensuring that the transformer operates within safe temperature limits and maintains optimal performance. The oil also acts as a dielectric medium, enhancing the transformer's electrical properties and protecting it from environmental factors.
- Primary Voltage Ratings 34.5-19.92/13.8-7.957/13.2-7.62/12.47-7.2, 24.94, 26.25, 33 or others
- Secondary Voltage Ratings 480/277V, 400/230V, 380/220V or customized
- H.V. Tap Range ± 2×2.5% HV taps or others
- Type Oil immersed distribution transformer
- BIL 30/95kV
- Standards IEEE, ANSI, NEMA, IEC, GB
- Application Agriculture, Power Distribution Substations, Renewable Energy Systems, Residential Areas
- Power Rating 80kVA
- Certificate UL, CESI, IEEE
- Cooling Method ONAN, ONAN/ONAF, KNAN, KNAN/KNAF
- Oil Mineral Oil or FR3
- Opeartion Step Down & Step Up
Technical Specifications
Customization Optional
Packing and Shipping
Manufacturer Test
Routine Testing
Application
Technical Specifications
80kVA Oil Immersed Transformer
Technical Specifications
Accessories
| Technical Specifications | ||
| Rated Power | 80 kVA | |
| Rating Primary Voltage | 2.4 - 34.5kV | |
| Secondary Voltage | 480/277V 400/230V 380/220V Customized |
|
| Frequency | 50/60Hz | |
| Vector Group | Dyn11, Yyn0, Dyn5 | |
| Winding Material | Aluminum/Copper | |
| Efficiency | As IEEE, Doe 2016, CAS Std or Customized | |
| Impedance Voltage | Nominal 2% or Customized 1.1 - 5.75% | |
| Altitude | ≤1,000m or Customized | |
| Color | ANSI 70 Light gray/Munsell 7GY3.29/1.5 or customized, etc | |
| Tank material | Mild Steel, 304 Stainless Steel | |
| Insulating Oil Weight | 130 kg | |
| Total Weight | 540 kg | |
| Outline Dimensions（L×W×H）in. | 870 × 510 × 1130（mm) | |
| HV Bushing |
| LV Bushing |
| Tap changer |
| Oil level gauge |
| Oil temperature indicator |
| Pressure relief device |
| Pressure vacuum gauge |
| Lifting hook for complete transformer |
| Name plate |
| Radiators |
| Oil upper filtering valve |
| Oil drain valve with 3/8" sampler |
Customization Optional
80kVA Oil Immersed Transformer
NPC ELECTRIC’s three-phase oil-immersed transformers can be fully customized to meet your specific requirements.
The optional specifications of the 80kVA three-phase oil-immersed transformer provide a variety of customized options to meet the needs of different applications and operating environments. Users can choose different voltage levels and load adjustment options according to specific needs, such as tap switches with load or no-load adjustment, so as to accurately adjust the output voltage of the transformer to ensure that it adapts to different power system needs. In addition, the transformer can also be equipped with efficient insulating oil, which is particularly suitable for use in extreme temperatures or special environments to enhance the durability and safety of the transformer.
The optional specifications of the 80kVA three-phase oil-immersed transformer provide a variety of customized options to meet the needs of different applications and operating environments. Users can choose different voltage levels and load adjustment options according to specific needs, such as tap switches with load or no-load adjustment, so as to accurately adjust the output voltage of the transformer to ensure that it adapts to different power system needs. In addition, the transformer can also be equipped with efficient insulating oil, which is particularly suitable for use in extreme temperatures or special environments to enhance the durability and safety of the transformer.
In order to improve the safety and reliability of the equipment, customers can also choose to equip it with options such as temperature monitoring system, oil level monitoring and pressure relief device to monitor the operating status of the transformer in real time to ensure that it can still operate stably under high load or harsh conditions. In addition, the transformer shell can also be selected according to needs, anti-corrosion coating, or a stainless steel shell to increase the service life in humid or corrosive environments. These optional specifications enable the 80kVA three-phase oil-immersed transformer to provide customized, efficient, and safe power solutions in different industrial, commercial, and distribution systems.
Packing and Shipping
80kVA Oil Immersed Transformer
NPC ELECTRIC 80kVA Oil Immersed Transformer is designed to be securely packaged for sea freight transport, ensuring safe delivery across long distances.
For this purpose, the packaging and transportation process of the 80kVA three-phase oil-immersed transformer is carefully designed to ensure that the equipment is fully protected during transportation and arrives safely at the destination. First, the transformer will be placed on a sturdy wooden box or wooden pallet for packaging, and the external packaging materials are treated with anti-corrosion to prevent moisture, corrosion, and bad weather. In order to reduce the vibration and impact that may occur during transportation, the transformer will be wrapped with materials such as anti-vibration pads, bubble film, or plastic film to ensure that the equipment is stable and intact during transportation. In addition, since the transformer adopts an oil-immersed design, special attention is paid to the sealing of the oil tank to ensure that the oil does not leak and maintain the correct oil level. Conspicuous warning labels such as "fragile", "keep dry", and "moisture-proof" will be affixed to the outer packaging to remind the handling and transportation personnel to operate carefully and prevent unnecessary damage to the equipment. According to the specific destination and conditions of transportation, the transformer will choose a suitable transportation method, such as land transportation, sea transportation, or rail transportation, to ensure the safest and most efficient logistics method. In addition, when transporting internationally, relevant customs documents, such as commercial invoices, packing lists, export permits, etc., will be prepared to ensure smooth customs clearance and compliance with the regulations of the importing country. After the transformer arrives at the destination, the transportation company will unload and inspect the packaging to ensure that the equipment has not been damaged. Through this series of carefully arranged packaging and transportation processes, it is ensured that the 80kVA three-phase oil-immersed transformer can be delivered to the customer safely and on time, ready for use.
For this purpose, the packaging and transportation process of the 80kVA three-phase oil-immersed transformer is carefully designed to ensure that the equipment is fully protected during transportation and arrives safely at the destination. First, the transformer will be placed on a sturdy wooden box or wooden pallet for packaging, and the external packaging materials are treated with anti-corrosion to prevent moisture, corrosion, and bad weather. In order to reduce the vibration and impact that may occur during transportation, the transformer will be wrapped with materials such as anti-vibration pads, bubble film, or plastic film to ensure that the equipment is stable and intact during transportation. In addition, since the transformer adopts an oil-immersed design, special attention is paid to the sealing of the oil tank to ensure that the oil does not leak and maintain the correct oil level. Conspicuous warning labels such as "fragile", "keep dry", and "moisture-proof" will be affixed to the outer packaging to remind the handling and transportation personnel to operate carefully and prevent unnecessary damage to the equipment. According to the specific destination and conditions of transportation, the transformer will choose a suitable transportation method, such as land transportation, sea transportation, or rail transportation, to ensure the safest and most efficient logistics method. In addition, when transporting internationally, relevant customs documents, such as commercial invoices, packing lists, export permits, etc., will be prepared to ensure smooth customs clearance and compliance with the regulations of the importing country. After the transformer arrives at the destination, the transportation company will unload and inspect the packaging to ensure that the equipment has not been damaged. Through this series of carefully arranged packaging and transportation processes, it is ensured that the 80kVA three-phase oil-immersed transformer can be delivered to the customer safely and on time, ready for use.
32
32 years of industry experience
Manufacturer Test
80kVA Oil Immersed Transformer
Progress Test
NPC Electric manufactures three-phase oil-immersed transformers the strict quality control. The Progress Test of an 80kVA three-phase oil-immersed transformer is an important step to ensure that the transformer meets the design specifications, quality standards, and safety requirements during the manufacturing process. The test content includes several key items.
First, the Winding Resistance Test is carried out to check whether the resistance value of the winding meets the expected standard and ensure that there is no abnormality in the current transmission.
Next, the Insulation Resistance Test is carried out to verify the insulation performance of each component inside the transformer to prevent electrical faults and short circuits. Load loss and no-load loss tests are used to evaluate the energy efficiency of the transformer to ensure that its energy loss during operation is minimal. Short-circuit impedance test ensures that the transformer can withstand safe current pressure and maintain stable operation under short-circuit conditions. The temperature rise test simulates the working state of the transformer under long-term load to ensure that the transformer does not overheat during operation and the temperature remains within a safe range.
All these progress tests help ensure the performance, efficiency, and safety of the 80kVA three-phase oil-immersed transformer meets industry standards and design requirements before delivery to customers.
Design Tests
All transformer will be test after finished the production, test items as below:
♦ Insulation Power Factor
♦ Ratio, Polarity, and Phase Relation
♦ Winding Resistance
♦ Impulse Tests
♦ On load Loss Test
♦ No Load Loss Test
♦ Leak Test
♦ DC Insulation Resistance Test
♦ Transformer Turns Ratio/TTR (All Tap Voltages)
♦ Impedance Voltage & Load Loss (Rated Voltage)
♦ Polarity, 1-Ph / Phase Relation, 3-Ph (Rated Voltage)
♦ Excitation & No-Load Loss (Rated Voltage)
♦ Applied Voltage
♦ Induced Voltage
♦ Lightning Impulse
♦ Insulation Resistance (Rated Voltage)
♦ Temperature Rise
♦ Dielectric Withstand (Hipot)
Transformer Factory Acceptance Test
NPC Electric will have tests made for quality control by the manufacturer on every device or representative samples, or on parts or materials as required, to verify during production that the product meets the design specifications.
The Factory Acceptance Test (FAT) of the 80kVA three-phase oil-immersed transformer is a critical quality control procedure to ensure that the transformer meets all design and safety specifications. First, the Winding Resistance Test is performed to measure the resistance value of the winding to ensure that it meets the design standards and is not damaged or abnormal. Next, the Insulation Resistance Test is performed to check the internal insulation system of the transformer to confirm that all insulation materials and components can effectively prevent electrical leakage and ensure long-term safe operation. The temperature rise test simulates the working state of the transformer under rated load, checks its temperature rise under long-term operation, and ensures that its operating temperature is within a safe range and will not overheat. Finally, Oil tank sealing inspection and Oil level monitoring are carried out to ensure that there is no leakage in the transformer tank, the insulation oil is intact, and the proper oil level is maintained. Through these detailed factory acceptance tests, it is ensured that the 80kVA three-phase oil-immersed transformer fully complies with international standards and industry specifications before being delivered to customers, and has efficient, stable, and safe performance.
Routine Test - Applied Voltage
Purpose of Testing
The purpose of testing the applied voltage is to verify the insulation strength of the transformer by applying a voltage higher than its normal operating level, ensuring it can withstand potential electrical stresses. This test helps identify any weaknesses or defects in the insulation system before the transformer is put into service.
Testing Equipment
Test equipment: High voltage tester (e.g. TTR, Hipot, etc.)
Voltage source: usually 1 kV, 5 kV, 10 kV, or customized according to customer needs
Temperature and humidity meter: used to record environmental conditions
Voltage source: usually 1 kV, 5 kV, 10 kV, or customized according to customer needs
Temperature and humidity meter: used to record environmental conditions
Pre-Test Preparation
Disconnect the device from the power supply and make sure it is properly grounded and discharged.
Check the connection terminals and wiring to ensure that they are not loose or contaminated.
Test under suitable environmental conditions: relative humidity below 75% and no rain (recommended temperature: 20-30°C).
Check the connection terminals and wiring to ensure that they are not loose or contaminated.
Test under suitable environmental conditions: relative humidity below 75% and no rain (recommended temperature: 20-30°C).
Test Progress
Connect the Test Instrument:
Properly connect the test equipment to the bushings or terminals of the device under test and ensure that all connection points are properly grounded.
Selecting the test voltage:
Select the appropriate applied voltage based on the rated voltage of the equipment.
Properly connect the test equipment to the bushings or terminals of the device under test and ensure that all connection points are properly grounded.
Selecting the test voltage:
Select the appropriate applied voltage based on the rated voltage of the equipment.
Measure and Record
Start the test and record the following parameters:
Measuring leakage current
Applied voltage
Current stability
Any possible voltage fluctuations
Measuring leakage current
Applied voltage
Current stability
Any possible voltage fluctuations
Temperature Correction
If necessary, the measured data is temperature corrected to ensure that it corresponds to standard temperature conditions (usually 20°C).
Repeat Testing (if necessary)
Multiple tests were conducted on different windings (high voltage, medium voltage, low voltage) and bushings, and comparative analysis was performed.
Evaluation Criteria (Reference)
The test was normal and the equipment performed well (qualified)
The current value exceeded the allowable range and the equipment needs to be inspected or maintained (pending repair)
There was a serious fault or instability and the equipment could not continue to operate (unqualified)
The current value exceeded the allowable range and the equipment needs to be inspected or maintained (pending repair)
There was a serious fault or instability and the equipment could not continue to operate (unqualified)
Observing electrical behavior
Observe the electrical behavior of the device under test to ensure that there are no abnormal currents, arcing, noise, or electrical faults.
*These comprehensive tests ensure that each transformer meets performance standards and operates
reliably under various conditions.
Application
Agriculture, Power Distribution Substations, Renewable Energy Systems, Residential Areas
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
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What is a Transformer?A transformer is an electrical device used to change the voltage of alternating current (AC). It works on the principle of electromagnetic induction, converting high-voltage current into low-voltage current or low-voltage current into high-voltage current. Transformers are widely used in power transmission, distribution systems, and various electronic devices.
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What are the main uses of a transformer?The main use of a transformer is voltage conversion. Transformers are used in power transmission systems to help transfer electricity from power plants to consumers. In addition, transformers are also used in electronic devices such as chargers, televisions, power adapters, etc., to adjust the voltage to meet the requirements of different devices.
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Do you have UL listed?Yes, our transformer has UL listed. We have exported to America many pad mounted transformer,substation transformer and HV.
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