5kVA Completely self-protected(CSP) Single Phase Pole Mounted Transformer
NPC ELECTRIC the production of the 5kVA Completely self-protected(CSP) Single Phase pole Mounted transformer is designed for reliable and efficient distribution of electrical power in residential and light commercial applications. Built to withstand harsh outdoor conditions, this transformer is equipped with a self-protection system that eliminates the need for external protection devices, offering enhanced safety and durability. The CSP feature ensures that the transformer can handle internal faults such as short circuits or overloads without causing damage to the system. This compact, oil-immersed transformer is easy to install on poles, making it ideal for overhead distribution in areas with limited space. It is designed to meet international standards, including ANSI, IEEE, and CSA, ensuring high-quality performance and long-lasting operation. The 5kVA CSP transformer is energy-efficient, providing stable voltage regulation and minimizing maintenance requirements, making it an excellent choice for both utility and commercial applications.
- 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, IEC, CSA, NEMA, UL
- Application Residential, commercial and remote electrical power distribution systems
- Power Rating 5kVA
- Certificate CE, ISO
- 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
5kVA Completely self-protected(CSP) Single Phase Pole Mounted Transformer
Technical Specifications
Accessories
| Rated Power | 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 | 15 kg |
| Total Weight | 92 kg |
| Outline Dimensions（W×D×H） | 465×485×855 (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
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 of the 5kVA fully self-protected (CSP) single-phase pole-type transformer include different input and output voltage levels, additional protection functions, and enhanced weather-resistant design. For example, users can choose 11kV or other input voltage configurations as needed, and the output voltage can be customized according to load requirements, such as 230V or 400V.
The optional specifications of the 5kVA fully self-protected (CSP) single-phase pole-type transformer include different input and output voltage levels, additional protection functions, and enhanced weather-resistant design. For example, users can choose 11kV or other input voltage configurations as needed, and the output voltage can be customized according to load requirements, such as 230V or 400V.
At the same time, the transformer can also be equipped with additional temperature monitoring and remote monitoring functions to improve operational safety and maintenance efficiency.
In addition, users can also choose a casing with a higher level of protection, which is suitable for more harsh environments, such as applications under high humidity or extreme climate conditions.
With these optional specifications, the transformer can better meet different application scenarios and special needs.
In addition, users can also choose a casing with a higher level of protection, which is suitable for more harsh environments, such as applications under high humidity or extreme climate conditions.
With these optional specifications, the transformer can better meet different application scenarios and special needs.
Packing and Shipping
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 of the 5kVA Completely Self-Protected (CSP) Single Phase Pole Mounted Transformer are carefully designed to ensure the transformer reaches its destination in optimal condition. The transformer is first securely packed in a durable wooden crate or metal frame, which provides robust protection during transport. High-quality shock-absorbing materials, such as foam, cardboard, or wooden supports, are used inside the packaging to prevent any damage caused by vibrations or impacts. The transformer is also coated with anti-corrosion treatment to protect it from moisture and environmental factors during transit.
To further safeguard the transformer, the external packaging is covered with waterproof plastic film or moisture-resistant materials, ensuring that it remains dry and protected against external elements. All packaging is clearly labeled with handling instructions, such as "Keep Dry," "Handle with Care," and "This Side Up," as well as product details like model, batch number, and manufacturing date for easy identification.
Once packed, the transformer is prepared for shipment based on its destination. For domestic shipments, it is typically transported by truck, while international shipments may involve sea or air freight. The transformer is placed on a pallet to maintain stability during transit. Throughout the shipping process, the logistics provider offers real-time tracking and monitoring to ensure safe delivery.
Upon arrival, the packaging is carefully opened, and a final inspection is conducted to ensure the transformer is in perfect condition. All relevant shipping documents, including factory acceptance test reports, are provided to the customer for verification and record-keeping. This detailed packing and shipping process ensures that the 5kVA CSP Single Phase Pole Mounted Transformer arrives at its destination safely, ready for installation and use.
For this purpose, the packing and shipping of the 5kVA Completely Self-Protected (CSP) Single Phase Pole Mounted Transformer are carefully designed to ensure the transformer reaches its destination in optimal condition. The transformer is first securely packed in a durable wooden crate or metal frame, which provides robust protection during transport. High-quality shock-absorbing materials, such as foam, cardboard, or wooden supports, are used inside the packaging to prevent any damage caused by vibrations or impacts. The transformer is also coated with anti-corrosion treatment to protect it from moisture and environmental factors during transit.
To further safeguard the transformer, the external packaging is covered with waterproof plastic film or moisture-resistant materials, ensuring that it remains dry and protected against external elements. All packaging is clearly labeled with handling instructions, such as "Keep Dry," "Handle with Care," and "This Side Up," as well as product details like model, batch number, and manufacturing date for easy identification.
Once packed, the transformer is prepared for shipment based on its destination. For domestic shipments, it is typically transported by truck, while international shipments may involve sea or air freight. The transformer is placed on a pallet to maintain stability during transit. Throughout the shipping process, the logistics provider offers real-time tracking and monitoring to ensure safe delivery.
Upon arrival, the packaging is carefully opened, and a final inspection is conducted to ensure the transformer is in perfect condition. All relevant shipping documents, including factory acceptance test reports, are provided to the customer for verification and record-keeping. This detailed packing and shipping process ensures that the 5kVA CSP Single Phase Pole Mounted Transformer arrives at its destination safely, ready for installation and use.
32
32 years of industry experience
Manufacturer Test
5kVA Completely self-protected(CSP) Single Phase Pole Mounted Transformer
Progress Test
NPC Electric manufactures pad-mounted transformers the strict quality control. The Progress Test of the 5kVA fully self-protected (CSP) single-phase pole-type transformer is designed to ensure that the key performance indicators of the transformer meet the design requirements during the production process. The test content usually includes electrical safety tests, load performance tests, overload protection function verification, insulation withstand voltage tests, and short-circuit protection function tests. These tests ensure that the transformer can provide power stably and safely in actual operation, and quickly cut off the current in case of abnormalities to avoid damage. The Progress Test also includes checks on various physical parameters of the transformer, such as temperature rise, efficiency, and resistance to environmental interference, to ensure that the product meets the highest quality standards 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
NPC Electric will 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 5kVA fully self-protected (CSP) single-phase pole-type transformer is a series of comprehensive inspections performed on the transformer before it leaves the factory to ensure that it meets the design and technical specifications. The test includes verification of electrical performance, such as input and output voltage, load test, overload protection, and short-circuit protection function inspection, as well as insulation strength, withstand voltage test, and temperature rise test. In addition, the mechanical structure of the transformer is checked to ensure that its installation stability and protection level meet the standards. Through these rigorous acceptance tests, it is ensured that the transformer meets the highest quality standards and has good operating performance and safety before it is delivered to the customer.
Routine Test - Transformer Turns Ratio/TTR (All Tap Voltages)
Purpose of Testing
The purpose of the transformer turns ratio (TTR) test is to confirm whether the voltage ratio between each tap of the transformer meets the design requirements and ensure that the transformer winding is connected correctly. By measuring the voltage ratio of each tap, it is possible to detect whether there is a fault or deviation in the transformer winding.
Testing Equipment
TTR tester: such as Doble, Megger, Omicron and other brands of transformer winding ratio tester.
Voltage source: usually AC 10 V to 30 V , used to test different voltages for each tap.
Temperature and humidity meter: used to record environmental conditions during the test to ensure test accuracy.
Current probe: used to measure the load current of the winding and ensure the accuracy of the test results.
Voltage source: usually AC 10 V to 30 V , used to test different voltages for each tap.
Temperature and humidity meter: used to record environmental conditions during the test to ensure test accuracy.
Current probe: used to measure the load current of the winding and ensure the accuracy of the test results.
Pre-Test Preparation
Disconnect all transformer tap-changers from the power supply and ensure that all equipment is properly grounded and discharged.
Perform the test under suitable environmental conditions: relative humidity below 75% and no rain (recommended temperature: 20-30°C). Avoid high humidity or bad weather that may affect the test accuracy.
Perform the test under suitable environmental conditions: relative humidity below 75% and no rain (recommended temperature: 20-30°C). Avoid high humidity or bad weather that may affect the test accuracy.
Test Progress
Perform the test under suitable environmental conditions: relative humidity below 75% and no rain (recommended temperature: 20-30°C). Avoid high humidity or bad weather that may affect the test accuracy.
Measure and Record
Start the test and record the following parameters:
The voltage ratio between the windings
Deviation of the measured value from the rated ratio
The voltage ratio between the windings
Deviation of the measured value from the rated ratio
Temperature Correction
If necessary, perform temperature correction on the measured turns ratio data (especially when testing at higher or lower temperatures). Generally, the standard reference temperature for temperature correction is 20°C.
Repeat Testing (if necessary)
Test the transformer's windings of different voltage levels (high voltage, medium voltage, and low voltage) separately to ensure that the turns ratios of all windings are normal.
Evaluation Criteria (Reference)
Turns ratio error ≤ 0.5% (pass)
0.5% < Turns ratio error ≤ 1% (caution)
Turns ratio error > 1% (further inspection or corrective action required)
0.5% < Turns ratio error ≤ 1% (caution)
Turns ratio error > 1% (further inspection or corrective action required)
*These comprehensive tests ensure that each transformer meets performance standards and operates
reliably under various conditions.
Application
Residential, commercial and remote electrical power distribution systems
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
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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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