75kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC has been specialized in manufacturing 75kVA Conventional Type Single Phase pole Mounted transformer for more than 20 years, which complies with international standards such as ANSI/IEEE C57, IEC60076 and other standards. Its main function is to convert high voltage electricity (such as 11kV, 13.8kV, etc.) into low voltage electricity (such as 120V/240V), providing stable and reliable power supply to end users. It is suitable for residential, commercial, agricultural and small industrial loads.
- 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, NEMA, ASTM
- Application Residential, commercial, agricultural and small industrial loads
- Power Rating 75kVA
- Certificate CE, ISO
- 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
75kVA Conventional Type Single Phase Pole Mounted Transformer
Technical Specifications
Accessories
| Rated Power | 75 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 | 88 kg |
| Total Weight | 480 kg |
| Outline Dimensions（W×D×H）in. | 745×840×1035 (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
75kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC'S 75kVA Conventional Type Single Phase pole Mounted transformer is mainly used in urban and rural power distribution systems to provide stable single-phase power for residential, commercial, agricultural and light industries. According to different use environments and grid requirements, the transformer can provide a series of optional specifications, including electrical performance, insulation system, protection level, cooling method and intelligent monitoring function, etc. to meet different application needs.
The rated voltage high-voltage side can be selected from 2.4kV, 4.16kV, 7.2kV, 11kV, 13.2kV, 13.8kV, 15kV, 19.92kV, 24.94kV, depending on the grid standard. The low-voltage side can be selected from 120/240V, 240/480V, 277/480V or other customized voltages. The off-excitation tap changer provides a tap range of ±2.5%, ±5% to adapt to different grid voltage fluctuations.
The on-load tap changer is suitable for environments with large voltage fluctuations, and the output voltage can be adjusted during operation to improve power supply stability.
The rated voltage high-voltage side can be selected from 2.4kV, 4.16kV, 7.2kV, 11kV, 13.2kV, 13.8kV, 15kV, 19.92kV, 24.94kV, depending on the grid standard. The low-voltage side can be selected from 120/240V, 240/480V, 277/480V or other customized voltages. The off-excitation tap changer provides a tap range of ±2.5%, ±5% to adapt to different grid voltage fluctuations.
The on-load tap changer is suitable for environments with large voltage fluctuations, and the output voltage can be adjusted during operation to improve power supply stability.
Insulation class A, B, F or H insulation is optional, depending on the operating temperature requirements and durability requirements of the transformer. High-grade insulation system can improve temperature resistance and extend the service life of the equipment. Mineral oil meets IEC 60296 or ASTM D3487 standards and has good insulation performance and heat dissipation capacity. Silicone oil has excellent fire resistance and is non-flammable, suitable for urban power supply systems and indoor installations. Natural ester oil is an environmentally friendly insulating oil with good biodegradability and high temperature resistance, suitable for areas with high environmental protection requirements (such as water source protection areas).
NPC ELECTRIC'S 75kVA Conventional Type Single Phase pole Mounted transformer has a variety of optional specifications to meet different grid requirements, operating environments and special application requirements. Users can customize according to voltage level, insulation medium, cooling method, protection level and intelligent monitoring function, so that the transformer can provide a safer and more reliable power supply in applications such as urban and rural power distribution, agricultural power supply, commercial and small industrial loads.
NPC ELECTRIC'S 75kVA Conventional Type Single Phase pole Mounted transformer has a variety of optional specifications to meet different grid requirements, operating environments and special application requirements. Users can customize according to voltage level, insulation medium, cooling method, protection level and intelligent monitoring function, so that the transformer can provide a safer and more reliable power supply in applications such as urban and rural power distribution, agricultural power supply, commercial and small industrial loads.
Packing and Shipping
75kVA Conventional Type Single Phase Pole Mounted Transformer
The packaging and transportation of 5kVA Conventional Type Single Phase pole Mounted transformer is an important step to ensure that the transformers are not damaged during transportation and are delivered to customers on time and safely.
The transformers are first wrapped with moisture-proof and dust-proof materials to protect the equipment from the external environment. Commonly used packaging materials include plastic film, foam padding, and anti-rust paper. The transformers are usually placed in sturdy wooden boxes or steel frames to provide additional physical protection from collisions or vibrations during transportation.
According to the weight and size of the transformer, choose the appropriate transportation tools (such as trucks, containers, etc.) for loading. According to customer requirements and destinations, transformers can be transported by land, sea or air. For international transportation, customs declaration and export procedures may be required.
The transformers are firmly fixed in the transport vehicle or container to prevent displacement or vibration during transportation. Tie straps, wooden pallets and other fixings are usually used to ensure the stability of the equipment.
In the container, the transformer is usually placed on a dedicated bracket to reduce pressure and friction on the equipment.
Through careful packaging and shipping arrangements, the 5kVA conventional single-phase pole-mount transformer can remain safe and intact during transportation, ensuring that customers receive quality equipment to meet their power needs.
The transformers are first wrapped with moisture-proof and dust-proof materials to protect the equipment from the external environment. Commonly used packaging materials include plastic film, foam padding, and anti-rust paper. The transformers are usually placed in sturdy wooden boxes or steel frames to provide additional physical protection from collisions or vibrations during transportation.
According to the weight and size of the transformer, choose the appropriate transportation tools (such as trucks, containers, etc.) for loading. According to customer requirements and destinations, transformers can be transported by land, sea or air. For international transportation, customs declaration and export procedures may be required.
The transformers are firmly fixed in the transport vehicle or container to prevent displacement or vibration during transportation. Tie straps, wooden pallets and other fixings are usually used to ensure the stability of the equipment.
In the container, the transformer is usually placed on a dedicated bracket to reduce pressure and friction on the equipment.
Through careful packaging and shipping arrangements, the 5kVA conventional single-phase pole-mount transformer can remain safe and intact during transportation, ensuring that customers receive quality equipment to meet their power needs.
32
32 years of industry experience
Manufacturer Test
75kVA Conventional Type Single Phase Pole Mounted Transformer
Progress Test
Manufacturing progress testing of NPC ELECTRIC'S 75kVA Conventional Type Single Phase pole Mounted transformer includes electrical testing, structural inspection and component verification. Tests usually include electrical insulation of high and low voltage windings, withstand voltage test, short circuit test, etc. Manufacturers also check temperature rise test and other operating performance to ensure the stability of the transformer under load conditions. Through progress testing, manufacturers ensure that the transformer meets all design standards and has long-term reliability before delivery.
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
The factory acceptance test of NPC ELECTRIC'S 75kVA Conventional Type Single Phase pole Mounted transformer includes a comprehensive inspection of the transformer's electrical performance, dielectric strength, load test and safety functions to ensure that it meets the design standards and quality requirements.
Routine Test - Leak Test
Purpose of Testing
The purpose of water leakage test is to check whether there is leakage in the equipment or system, to ensure that it has good sealing and safety during use. The integrity of the equipment can be verified by simulating the pressure or load conditions in the working environment.
Testing Equipment
Leakage current tester (e.g. Fluke, Hioki, Megger, etc.)
Voltage source (usually 500V, 1 KV or 2.5 KV, customized according to test requirements)
Temperature and humidity meter
Ground electrode
Voltage source (usually 500V, 1 KV or 2.5 KV, customized according to test requirements)
Temperature and humidity meter
Ground electrode
Pre-Test Preparation
Ensure that the test environment conditions are suitable for leak testing. Test between 20°C and 30°C. Relative humidity should be less than 75% to avoid moisture affecting the test equipment and results.
Test Progress
Connect the Test Instrument:
Properly connect the test equipment (such as a leak detector) to the pipe, container or sealing structure of the device under test.
Apply Test Voltage:
Apply the appropriate test pressure (e.g. 10 bar, 15 bar, etc.) depending on the equipment's operating pressure or test standard.
Properly connect the test equipment (such as a leak detector) to the pipe, container or sealing structure of the device under test.
Apply Test Voltage:
Apply the appropriate test pressure (e.g. 10 bar, 15 bar, etc.) depending on the equipment's operating pressure or test standard.
Measure and Record
Start the test and record the following parameters:
Applied test pressure
Leakage (can be monitored by flow meter or other equipment)
Time record (to ensure that the test time meets the standard requirements)
Initial pressure and final pressure (if any changes)
Applied test pressure
Leakage (can be monitored by flow meter or other equipment)
Time record (to ensure that the test time meets the standard requirements)
Initial pressure and final pressure (if any changes)
Check for leaks
Check for leaks on equipment surfaces and joints by using a foam detector, gas leak detector, or other suitable method.
Repeat Testing (if necessary)
If the test finds leakage or there is any doubt, repeat the test as necessary to verify the sealing of different locations or different equipment parts.
Evaluation Criteria (Reference)
No leakage (excellent): No leakage during the test, the equipment is completely sealed.
Minor leakage (good): Very small leakage is allowed, and it is necessary to judge whether it is qualified according to industry standards.
Minor leakage (good): Very small leakage is allowed, and it is necessary to judge whether it is qualified according to industry standards.
*These comprehensive tests ensure that each transformer meets performance standards and operates
reliably under various conditions.
Application
Residential, commercial, agricultural and small industrial loads
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
Product Packaging
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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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