15kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC has been focusing on the production of 15kVA Conventional Type Single Phase pole Mounted transformer for more than 20 years, which complies with IEC 60076, ANSI C57.12.20, EN 50464-1, ISO 9001 standards. NPC ELECTRIC'S transformer adopts oil-immersed self-cooling design, which can efficiently and stably convert high-voltage electricity into low-voltage electricity suitable for users. It is mainly used for power supply needs of rural areas, end of the power grid and small industrial users.
- Primary Voltage Ratings 2.4-34.5kV
- Secondary Voltage Ratings 480-240/240-120 or customized
- H.V. Tap Range ± 2×2.5% HV taps or others
- Type Conventional Type
- BIL 30-150kV
- Standards IEEE, ANSI, ISO, IEC
- Application Rural areas, small industrial users
- Power Rating 15kVA
- Certificate UL ,CESI ,ISO or DOE
- Cooling Method ONAN, KNAN
- Oil Minerial Oil or FR3
- Opeartion Step Down
Technical Specifications
Customization Optional
Packing and Shipping
Manufacturer Test
Routine Testing
Application
Technical Specifications
15kVA Conventional Type Single Phase Pole Mounted Transformer
Technical Specifications
Accessories
| Rated Power | 15 kVA |
| Rating Primary Voltage | 12.4-34.5kV |
| Secondary Voltage | 480-240V 240-120V 277V Customized |
| Frequency | 50/60Hz |
| Vector Group | Ii0,Ii6 |
| 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 | 30 kg |
| Total Weight | 210kg |
| Outline Dimensions（W×D×H） | 520×565×905 (mm) |
| Lifting Lug |
| Tap Changer |
| Pressure Relief Valve |
| Tank Cover and clamp |
| L.V Bushing |
| HV Bushing |
| Ground Strap |
| Nameplate |
| Non-PCB decal |
| High Voltage Warning Signs |
| Suport lug |
| Oil fill valve |
Customization Optional
15kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC'S 15kVA Conventional Type Single Phase pole Mounted transformer can provide a variety of optional specifications according to different application requirements to ensure its reliability and efficiency under various power systems, environmental conditions and special operating requirements. The high voltage side (HV) voltage level can be selected from 11kV, 13.2kV, 15kV, 19.92kV, 22kV, 33kV, etc. to adapt to the power grid requirements of different countries and regions. The low voltage side (LV) voltage level can be selected from 240/120V, 220/110V, 400/230V, 480V, etc. to meet the needs of different electrical equipment.
The insulation class meets the requirements of Class A (105°C), Class B (130°C), and Class F (155°C) to meet different operating temperature requirements. The insulation medium can be selected from mineral oil, silicone oil, and natural ester (FR3 environmentally friendly oil) according to environmental requirements. The lightning impulse level (BIL) can be selected from 75kV, 95kV, 125kV or higher to ensure the reliability of the transformer under lightning and switch overvoltage conditions.
The insulation class meets the requirements of Class A (105°C), Class B (130°C), and Class F (155°C) to meet different operating temperature requirements. The insulation medium can be selected from mineral oil, silicone oil, and natural ester (FR3 environmentally friendly oil) according to environmental requirements. The lightning impulse level (BIL) can be selected from 75kV, 95kV, 125kV or higher to ensure the reliability of the transformer under lightning and switch overvoltage conditions.
For structure and materials, copper winding (Cu) with better conductivity and suitable for power grids with high reliability requirements and aluminum winding (Al) with lower cost and suitable for economical power distribution solutions are used. The cooling method is standard oil-immersed self-cooling (ONAN), and forced air cooling (ONAF) is optional to increase the rated capacity.
NPC ELECTRIC'S 15kVA Conventional Type Single Phase pole Mounted transformer can provide a variety of optional specifications according to customer needs, including different voltage levels, insulation materials, cooling methods, protection levels, protection devices, remote monitoring functions, etc. These options can improve the adaptability of the transformer, making it suitable for different grid standards, environmental conditions and smart grid requirements, ensuring efficient, reliable and long-term stable operation.
NPC ELECTRIC'S 15kVA Conventional Type Single Phase pole Mounted transformer can provide a variety of optional specifications according to customer needs, including different voltage levels, insulation materials, cooling methods, protection levels, protection devices, remote monitoring functions, etc. These options can improve the adaptability of the transformer, making it suitable for different grid standards, environmental conditions and smart grid requirements, ensuring efficient, reliable and long-term stable operation.
Packing and Shipping
15kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC ensure that the 15kVA traditional single-phase pole-mounted transformer is protected from damage during transportation and storage, the manufacturer will adopt standardized packaging and transportation solutions. The packaging method must meet IEC 60076, ANSI C57.12.20 and the customer's special requirements, while ensuring the safety and reliability of the transformer under various environmental conditions.
Transformers are usually fixed with steel frames or wooden pallets to prevent tipping or sliding during transportation. Rubber pads or shockproof materials are installed at the bottom of the transformer to reduce the impact of vibration on the equipment. All terminals, bushings, valves and other components are protected by plastic covers or rubber seals to prevent dust and moisture from entering.
A clear product label (Nameplate) should be affixed to the packaging of each transformer, indicating the model, voltage level, weight, serial number and other information. The center of gravity (Center of Gravity), lifting points (Lifting Points) and storage direction (This Side Up) are marked on the packaging box to ensure correct handling. It is accompanied by a complete factory inspection report, packing list, installation manual and safety instructions, and placed in a waterproof sealed bag.
When choosing sea transportation, containers or flat racks are usually used for shipment. The transformer should be firmly fixed on the pallet to prevent displacement caused by sea turbulence. It is packed with moisture-proof and salt-spray-proof packaging, and coated with an anti-corrosion coating on the outside to prevent salt from corroding metal parts.
NPC ELECTRIC'S 15kVA Conventional Type Single Phase pole Mounted transformer adopts professional fixing, shockproof, moisture-proof and anti-corrosion measures during packaging and transportation to ensure that the equipment is always in the best condition before delivery to customers. Different modes of transportation (land, sea or air) will adopt corresponding protection plans, and strictly follow international packaging and safe transportation standards to minimize the risk of transportation damage and ensure that the transformer arrives safely at the installation site.
Transformers are usually fixed with steel frames or wooden pallets to prevent tipping or sliding during transportation. Rubber pads or shockproof materials are installed at the bottom of the transformer to reduce the impact of vibration on the equipment. All terminals, bushings, valves and other components are protected by plastic covers or rubber seals to prevent dust and moisture from entering.
A clear product label (Nameplate) should be affixed to the packaging of each transformer, indicating the model, voltage level, weight, serial number and other information. The center of gravity (Center of Gravity), lifting points (Lifting Points) and storage direction (This Side Up) are marked on the packaging box to ensure correct handling. It is accompanied by a complete factory inspection report, packing list, installation manual and safety instructions, and placed in a waterproof sealed bag.
When choosing sea transportation, containers or flat racks are usually used for shipment. The transformer should be firmly fixed on the pallet to prevent displacement caused by sea turbulence. It is packed with moisture-proof and salt-spray-proof packaging, and coated with an anti-corrosion coating on the outside to prevent salt from corroding metal parts.
NPC ELECTRIC'S 15kVA Conventional Type Single Phase pole Mounted transformer adopts professional fixing, shockproof, moisture-proof and anti-corrosion measures during packaging and transportation to ensure that the equipment is always in the best condition before delivery to customers. Different modes of transportation (land, sea or air) will adopt corresponding protection plans, and strictly follow international packaging and safe transportation standards to minimize the risk of transportation damage and ensure that the transformer arrives safely at the installation site.
32
32 years of industry experience
Manufacturer Test
15kVA Conventional Type Single Phase Pole Mounted Transformer
Progress Test
During the manufacturing process of NPC ELECTRIC'S 15kVA Conventional Type Single Phase pole Mounted transformer, a series of progressive tests are carried out to ensure that the product meets the design specifications, industry standards (such as IEC 60076, ANSI C57.12.20) and customer requirements. These tests include raw material and component inspection, winding resistance test, short circuit impedance and load loss test, no-load loss and excitation current test. These tests are carried out throughout the different stages of production to verify the quality, performance and safety of materials, components and finished products.
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
♦ 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
After NPC ELECTRIC'S 15kVA Conventional Type Single Phase pole Mounted transformer is manufactured, the factory will conduct a factory acceptance test (FAT) to ensure that the transformer meets the design specifications, international standards (such as IEC 60076, ANSI C57.12.20) and customer requirements. FAT ensures that the transformer has qualified electrical performance, insulation strength and operational reliability before delivery.
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
Rural areas, small industrial users
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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