37.5kVA Completely self-protected(CSP) Single Phase Pole Mounted Transformer
37.5kVA Completely self-protected(CSP) Single Phase pole Mounted transformer is an efficient and reliable power equipment designed to provide a stable single-phase power supply. The transformer adopts fully self-protection technology and has built-in multiple protection functions such as overload, short circuit, and overvoltage to ensure that the transformer automatically cuts off the power supply under abnormal conditions, effectively avoiding equipment damage and ensuring the safe operation of the system.
- 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 Completely self-protected(CSP) Type
- BIL 30-150kV
- Standards IEEE, ANSI, CSA
- Application Industrial Facilities,Rural and Remote Locations,Electricity Distribution Networks, Street Lighting Systems
- Power Rating 37.5kVA
- Certificate CE, ISO, UL
- Cooling Method ONAN
- Oil Minerial Oil or FR3
- Opeartion Step Down
Technical Specifications
Customization Optional
Packing and Shipping
Manufacturer Test
Routine Testing
Application
Technical Specifications
37.5kVA Completely self-protected(CSP) Single Phase Pole Mounted Transformer
Technical Specifications
Accessories
| Rated Power | 37.5 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 | 50 kg |
| Total Weight | 340 kg |
| Outline Dimensions（W×D×H） | 610×625×935 (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 |
| Support lug |
| Oil fill valve |
| Surge arrester |
| Secondary breaker |
| Weak link |
Customization Optional
37.5kVA Completely self-protected(CSP) Single Phase Pole Mounted Transformer
NPC ELECTRIC's Completely Self-Protected (CSP) Single-Phase Pole-Mounted Transformers offer a range of customizable features to meet diverse operational needs.
The optional specifications for the 37.5kVA Completely Self-Protected (CSP) Single Phase Pole Mounted Transformer provide flexibility to meet specific installation and operational needs. These options include customizable input voltage levels, such as 11kV, 13.8kV, or other regional grid standards.
Output voltage options can be tailored to meet application requirements, typically offering configurations like 230V or 400V.
Customers can also select additional protection features, such as enhanced surge protection, advanced temperature monitoring, or remote monitoring capabilities for real-time tracking of transformer performance.
The optional specifications for the 37.5kVA Completely Self-Protected (CSP) Single Phase Pole Mounted Transformer provide flexibility to meet specific installation and operational needs. These options include customizable input voltage levels, such as 11kV, 13.8kV, or other regional grid standards.
Output voltage options can be tailored to meet application requirements, typically offering configurations like 230V or 400V.
Customers can also select additional protection features, such as enhanced surge protection, advanced temperature monitoring, or remote monitoring capabilities for real-time tracking of transformer performance.
For environments with extreme weather or corrosive conditions, optional features such as anti-corrosion coatings, weatherproof enclosures, and high-grade insulation materials can be chosen to ensure long-term durability and optimal performance.
These customizable options allow the transformer to be adapted to various conditions and specific power distribution needs.
These customizable options allow the transformer to be adapted to various conditions and specific power distribution needs.
Packing and Shipping
37.5kVA Completely self-protected(CSP) Single Phase Pole Mounted Transformer
NPC ELECTRIC single-phase transformers are designed to be securely packaged for sea freight transport, ensuring safe delivery across long distances.
For this purpose, the packing and shipping process for the 37.5kVA Completely Self-Protected (CSP) Single Phase Pole Mounted Transformer is meticulously designed to ensure safe and secure delivery to its destination. Once the transformer passes all quality control checks, it is carefully packed into a durable wooden crate or metal frame to protect it from external damage during transportation. Inside the crate, the transformer is cushioned with shock-absorbing materials such as foam, bubble wrap, or wooden blocks to prevent movement and safeguard it from vibrations or impacts during transit.
To protect the transformer from environmental hazards such as moisture or dust, the package is wrapped with a waterproof plastic sheet or moisture-resistant covering. The packaging is clearly labeled with essential instructions, including "Keep Dry," "Fragile," and "This Side Up," to guide handlers and ensure the transformer is handled correctly during loading, unloading, and transport.
The packed transformer is securely fastened to a pallet or skid for added stability, ensuring that it remains in place during transit. Depending on the destination, it may be shipped by road, rail, or sea freight, with real-time tracking systems in place to monitor the shipment's progress and ensure timely delivery.
Upon arrival at the destination, the transformer is carefully unpacked and inspected for any shipping-related damage. Once verified, it is ready for installation and operation. This thorough packing and shipping process ensures that the 37.5kVA CSP Single Phase Pole Mounted Transformer is delivered in optimal condition, ready to provide reliable and efficient power distribution.
For this purpose, the packing and shipping process for the 37.5kVA Completely Self-Protected (CSP) Single Phase Pole Mounted Transformer is meticulously designed to ensure safe and secure delivery to its destination. Once the transformer passes all quality control checks, it is carefully packed into a durable wooden crate or metal frame to protect it from external damage during transportation. Inside the crate, the transformer is cushioned with shock-absorbing materials such as foam, bubble wrap, or wooden blocks to prevent movement and safeguard it from vibrations or impacts during transit.
To protect the transformer from environmental hazards such as moisture or dust, the package is wrapped with a waterproof plastic sheet or moisture-resistant covering. The packaging is clearly labeled with essential instructions, including "Keep Dry," "Fragile," and "This Side Up," to guide handlers and ensure the transformer is handled correctly during loading, unloading, and transport.
The packed transformer is securely fastened to a pallet or skid for added stability, ensuring that it remains in place during transit. Depending on the destination, it may be shipped by road, rail, or sea freight, with real-time tracking systems in place to monitor the shipment's progress and ensure timely delivery.
Upon arrival at the destination, the transformer is carefully unpacked and inspected for any shipping-related damage. Once verified, it is ready for installation and operation. This thorough packing and shipping process ensures that the 37.5kVA CSP Single Phase Pole Mounted Transformer is delivered in optimal condition, ready to provide reliable and efficient power distribution.
32
32 years of industry experience
Manufacturer Test
37.5kVA Completely self-protected(CSP) Single Phase Pole Mounted Transformer
Progress Test
NPC Electirc manufactures pad-mounted transformers have the strict quality control. The progress test for the 37.5kVA Completely Self-Protected (CSP) Single Phase Pole Mounted Transformer is a comprehensive set of checks conducted throughout the manufacturing process to ensure that the transformer adheres to design specifications and quality standards. The test verifies critical performance parameters such as input and output voltage, load handling capability, and the effectiveness of the protection systems, including overcurrent, short-circuit, and overload protection. Additionally, insulation resistance and dielectric strength tests are performed to assess the transformer's electrical integrity and safety under normal operating conditions.
One of the key elements of the progress test is the verification of the self-protection system, ensuring that it can automatically disconnect the transformer in case of fault conditions, such as electrical overloads or short circuits, to prevent damage and ensure safe operation. The test also includes functional checks of the transformer's components, such as the tap changer and protective relays, to confirm they are working as intended.
These progress tests are carried out at various stages of the production process to identify and address any issues early, ensuring that the transformer meets the required operational standards before proceeding to the final factory acceptance testing phase. This rigorous testing ensures that the 37.5kVA CSP Single Phase Pole Mounted Transformer will perform reliably and safely in the field.
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
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 Transformer Factory Acceptance Test (FAT) for the 37.5kVA Completely Self-Protected (CSP) Single Phase Pole Mounted Transformer is a thorough inspection and testing process conducted to ensure the transformer meets all technical and safety requirements before delivery. During the FAT, the transformer undergoes a series of critical tests, including verifying the input and output voltage, checking load performance, and testing the functionality of the built-in protection mechanisms such as overcurrent, short-circuit, and overload protection. Insulation resistance and dielectric strength tests are also performed to confirm the transformer's electrical integrity and safety. Additionally, the self-protection system is checked to ensure it automatically disconnects the transformer in case of faults. Once the transformer passes these tests, it is certified as meeting quality standards and is ready for shipment and installation.
Routine Test - Induced Voltage
Purpose of Testing
The purpose of the Induced Voltage test is to simulate the electrical stress that the equipment may encounter under actual working conditions by applying an induced voltage, thereby evaluating the tolerance and stability of the equipment's insulation system. This test helps to detect the insulation performance of the equipment under high voltage conditions and ensure its safety and reliability in operation.
Testing Equipment
Induced Voltage Tester (e.g. OMICRON, Megger, HioKI, etc.)
AC voltage source, commonly 2 kV, 5 kV, 10 kV, or customized according to test requirements.
Environmental thermometer and hygrometer, used to record the temperature and humidity of the environment for appropriate test evaluation.
AC voltage source, commonly 2 kV, 5 kV, 10 kV, or customized according to test requirements.
Environmental thermometer and hygrometer, used to record the temperature and humidity of the environment for appropriate test evaluation.
Pre-Test Preparation
Disconnect all relevant power supplies and ensure that the equipment is properly grounded and discharged.
Check the connection wires and terminals to ensure they are secure and free of contamination.
Test under suitable environmental conditions: relative humidity below 75%, no rain (recommended temperature: 20-30°C).
Check the connection wires and terminals to ensure they are secure and free of contamination.
Test under suitable environmental conditions: relative humidity below 75%, no rain (recommended temperature: 20-30°C).
Test Progress
Connect the Test Instrument:
Connect the test equipment to the appropriate terminals or bushings of the device under test, ensuring that the connections are secure and properly grounded.
Apply Test Voltage:
Select the appropriate induction voltage according to the rated voltage and standard of the equipment.
Connect the test equipment to the appropriate terminals or bushings of the device under test, ensuring that the connections are secure and properly grounded.
Apply Test Voltage:
Select the appropriate induction voltage according to the rated voltage and standard of the equipment.
Measure and Record
Start the test and record the following parameters:
Induced Voltage
Applied Current
Voltage peak, stability and waveform (waveform analysis)
Any abnormal current or voltage changes during the measurement process.
Induced Voltage
Applied Current
Voltage peak, stability and waveform (waveform analysis)
Any abnormal current or voltage changes during the measurement process.
Temperature Correction
The measured induced voltage data is corrected to the reference temperature (usually 20°C) to ensure the accuracy of the test results.
Repeat Testing (if necessary)
If necessary, test different windings (HV, MV, LV) and bushings separately and compare the results at different test points.
Evaluation Criteria (Reference)
Inductive voltage ≤ 1% (Excellent): normally and meets safety standards.
1% < Inductive voltage ≤ 3% (Good): still within acceptable range.
Inductive voltage > 3% : faulty or not meet safety requirements and requires further analysis and repair.
1% < Inductive voltage ≤ 3% (Good): still within acceptable range.
Inductive voltage > 3% : faulty or not meet safety requirements and requires further analysis and repair.
*These comprehensive tests ensure that each transformer meets performance standards and operates
reliably under various conditions.
Application
Industrial Facilities,Rural and Remote Locations,Electricity Distribution Networks, Street Lighting Systems
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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