5000kVA Three Phase Pad Mounted Transformer
NPC ELECTRIC's 5000kVA Three Phase Pad Mounted transformer adopts internationally advanced design and manufacturing standards, complies with international power industry specifications such as IEC and ANSI, and is widely used in power distribution in urban distribution networks, industrial parks, large shopping malls and other places. The transformer has high efficiency and durability, can operate stably in harsh environments, and ensure continuous and safe power supply. Its compact design and reliable protection mechanism make it an ideal choice for medium and high voltage distribution systems.
- 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 208GrdY/120;416GrdY/240 or Customized
- H.V. Tap Range ± 2×2.5% HV taps or others
- Type Loop Feed or Radial Feed
- BIL 30/95kV
- Standards IEEE, ANSI, NEMA, ASTM
- Application EV Charging
- Power Rating 5000kVA
- Certificate UL
- Cooling Method ONAN, ONAN/ONAF, KNAN, KNAN/KNAF
- Oil Minerial Oil or FR3
- Opeartion Step Down & Step Up
Technical Specifications
Customization Optional
Packing and Shipping
Manufacturer Test
Routine Testing
Application
Technical Specifications
5000kVA Three Phase Pad Mounted Transformer
Technical Specifications
Accessories
| Rated Power | 5000 kVA |
| Rating Primary Voltage | 4.16-34.5kV or customized |
| Secondary Voltage | 480GrdY/277 208GrdY/120 400GrdY/230 Customized（208Y/120 V to 4,160 V） |
| Frequency | 50/60Hz |
| Vector Group | Dyn1/Yyn0/Dyn11/Dyn5 |
| Winding Material | Aluminum/Copper |
| Efficiency | As IEEE,Doe 2016,CAS Std or Customized |
| Impedance Voltage | Nominal 3.5% 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 | 3500 kg |
| Total Weight | 9700 kg |
| Outline Dimensions（L×W×H）in. | 2880×2200×2100（mm） |
| Lifting Lug | ELSP Fuse |
| Hinged Door | BAY-O-NET Fuse |
| Parking Bracket | Tap Changer |
| Tank Cover | Oil Level Gauge |
| L.V Bushing (4-Hole ) | Pressure Relief Valve |
| Two/Four Position Load break Switch | Vacuum Pressure Gauge |
| HV Grounding Copper Bar | Terminal Block |
| Temperature Indicator | Door Handle |
| H.V Bushing Well(15kV) | Ground Strap |
| Grounding Copper Bar | Nameplate |
| 1"'Drain Valve With 3/8" Sampler | IR Window |
| 1" Upper Fill Valve Filter Press Connection | Terminal Box |
| Non-PCB decal | High Voltage Warning Signs |
Customization Optional
5000kVA Three Phase Pad Mounted Transformer
The optional specifications of the 5000kVA Three Phase Pad Mounted transformers provide a variety of customization options to meet different application scenarios and customer-specific needs, further improving the performance and adaptability of the transformer. Different voltage levels (such as 10kV, 13.8kV, 24kV, 33kV, etc.) can be customized according to customer needs to meet the requirements of various power systems.
Provides natural oil circulation cooling (ONAN) or forced air cooling (ONAF) to optimize heat dissipation performance according to actual load and environmental conditions. Optional transformer with load tap changer to facilitate voltage regulation and maintain stable voltage output.
Different types of insulating oils such as mineral oil, environmentally friendly vegetable oil or silicone oil can be selected according to application requirements to ensure environmental protection and high temperature performance. Optional reinforced insulation design is available to adapt to special environmental conditions such as high humidity, high pollution or high altitude areas.
Provides natural oil circulation cooling (ONAN) or forced air cooling (ONAF) to optimize heat dissipation performance according to actual load and environmental conditions. Optional transformer with load tap changer to facilitate voltage regulation and maintain stable voltage output.
Different types of insulating oils such as mineral oil, environmentally friendly vegetable oil or silicone oil can be selected according to application requirements to ensure environmental protection and high temperature performance. Optional reinforced insulation design is available to adapt to special environmental conditions such as high humidity, high pollution or high altitude areas.
An optional remote monitoring system can be used to monitor the transformer's temperature, oil level, load, partial discharge and other operating data in real time, so as to detect problems in advance and conduct intelligent operation and maintenance. A variety of protective devices such as lightning arresters, gas relays, pressure relief valves, oil level gauges, etc. can be equipped according to needs to further improve the safety and reliability of the transformer.
These optional specifications enable the 5000kVA three-phase box-type transformer to be customized according to specific application scenarios and customer needs, ensuring its stable and reliable operation in various environments.
These optional specifications enable the 5000kVA three-phase box-type transformer to be customized according to specific application scenarios and customer needs, ensuring its stable and reliable operation in various environments.
Packing and Shipping
5000kVA Three Phase Pad Mounted Transformer
The packaging and shipping of 5000kVA Three Phase Pad Mounted transformer is a key link to ensure that the product is safe, complete and delivered to customers on time during transportation.
The transformer is packed in a steel or wooden frame structure. External reinforcement measures ensure that the transformer will not be displaced or damaged due to vibration or impact during transportation. The packaging material is durable and has high compressive strength to provide good protection. The metal parts of the transformer are coated with an anti-corrosion coating to prevent corrosion caused by environmental factors such as moisture and salt spray during long-term transportation. At the same time, the outside of the transformer is wrapped with a moisture-proof film to further protect the equipment from moisture.
Special protection is given to key parts of the transformer (such as terminals, gas relays, oil level gauges, etc.), and sensitive areas are wrapped with soft cushioning materials to prevent impact and friction damage during transportation. All packaging boxes are affixed with clear shipping labels indicating the product model, weight, precautions, and loading and unloading requirements to ensure safety and efficiency during transportation.
During the transportation process, logistics companies usually conduct real-time monitoring to ensure that the transformers are transported as planned, and promptly notify customers or adjust the transportation plan if any abnormalities occur.
After the transformer is delivered, the manufacturer or supplier will provide necessary after-sales service and technical support to ensure that the transformer is smoothly installed and put into use.
Through careful packaging and professional transportation management, 5000kVA three-phase box-type transformers can be delivered to customers safely and on time around the world, ensuring efficient operation of the equipment.
The transformer is packed in a steel or wooden frame structure. External reinforcement measures ensure that the transformer will not be displaced or damaged due to vibration or impact during transportation. The packaging material is durable and has high compressive strength to provide good protection. The metal parts of the transformer are coated with an anti-corrosion coating to prevent corrosion caused by environmental factors such as moisture and salt spray during long-term transportation. At the same time, the outside of the transformer is wrapped with a moisture-proof film to further protect the equipment from moisture.
Special protection is given to key parts of the transformer (such as terminals, gas relays, oil level gauges, etc.), and sensitive areas are wrapped with soft cushioning materials to prevent impact and friction damage during transportation. All packaging boxes are affixed with clear shipping labels indicating the product model, weight, precautions, and loading and unloading requirements to ensure safety and efficiency during transportation.
During the transportation process, logistics companies usually conduct real-time monitoring to ensure that the transformers are transported as planned, and promptly notify customers or adjust the transportation plan if any abnormalities occur.
After the transformer is delivered, the manufacturer or supplier will provide necessary after-sales service and technical support to ensure that the transformer is smoothly installed and put into use.
Through careful packaging and professional transportation management, 5000kVA three-phase box-type transformers can be delivered to customers safely and on time around the world, ensuring efficient operation of the equipment.
32
32 years of industry experience
Manufacturer Test
5000kVA Three Phase Pad Mounted Transformer
Progress test
The manufacturing process of 5000kVA Three Phase Pad Mounted transformer strictly inspects all key raw materials (such as iron core, conductor, insulation material, etc.), measures the resistance of the transformer winding, performs power frequency withstand voltage and impulse withstand voltage tests, and tests the no-load loss and load loss of the transformer. Through these rigorous tests in the manufacturing process, it is ensured that the 5000kVA three-phase box-type transformer can meet the best quality standards when it leaves the factory, providing users with safe, stable and efficient power services.
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
The factory acceptance test of the 5000kVA Three Phase Pad Mounted transformer is a key test performed before the transformer leaves the factory to ensure that it meets the design specifications and quality standards. The test content includes electrical performance, load loss, temperature rise, and protection device function to ensure safe and stable operation of the equipment.
Routine Test - DC Insulation Resistance Test
Purpose of Testing
The purpose of DC insulation resistance testing is to measure the insulation resistance of a device by applying a DC voltage, thereby evaluating the health of the insulation material and the voltage withstand capability of the electrical device. This test helps detect potential insulation aging, moisture or damage, preventing electrical failures in the device.
Testing Equipment
Insulation resistance tester (e.g. Megger, Fluke, Hioki, Klein Tools, etc.)
Voltage source (usually 500V, 1000V, 2500V, or customized according to customer requirements)
Temperature and humidity meter (used to record the ambient temperature and humidity during the test to ensure that the test conditions meet the standard requirements.)
Voltage source (usually 500V, 1000V, 2500V, or customized according to customer requirements)
Temperature and humidity meter (used to record the ambient temperature and humidity during the test to ensure that the test conditions meet the standard requirements.)
Pre-Test Preparation
Make sure the device is properly grounded and fully discharged to prevent residual charge in the device from affecting the test results.
Perform the test under suitable environmental conditions. It is recommended to have a relative humidity below 75%, no rain, and a temperature range of 20-30°C to avoid moisture or temperature fluctuations affecting the test results.
Perform the test under suitable environmental conditions. It is recommended to have a relative humidity below 75%, no rain, and a temperature range of 20-30°C to avoid moisture or temperature fluctuations affecting the test results.
Test Progress
Connect the Test Instrument:
Connect an insulation resistance tester to the high voltage terminal of the device under test and to ground.
Apply Test Voltage:
Select an appropriate test voltage based on the rated voltage of the equipment .
Connect an insulation resistance tester to the high voltage terminal of the device under test and to ground.
Apply Test Voltage:
Select an appropriate test voltage based on the rated voltage of the equipment .
Measure and Record
Start the test and record the following parameters:
Insulation resistance value (MΩ)
Applied voltage
Ambient temperature and humidity during testing
Insulation resistance value (MΩ)
Applied voltage
Ambient temperature and humidity during testing
Temperature Correction
The measured insulation resistance values are corrected to a reference temperature (usually 20°C) for accurate evaluation.
Repeat Testing (if necessary)
Measure different windings (high voltage, medium voltage, low voltage) or each bushing separately, and conduct comparative analysis to ensure the insulation status of all parts.
Evaluation Criteria (Reference)
nsulation resistance ≥ 1000 MΩ (excellent)
500 MΩ ≤ Insulation resistance < 1000 MΩ (good)
100 MΩ ≤ Insulation resistance < 500 MΩ
Insulation resistance < 100 MΩ
500 MΩ ≤ Insulation resistance < 1000 MΩ (good)
100 MΩ ≤ Insulation resistance < 500 MΩ
Insulation resistance < 100 MΩ
*These comprehensive tests ensure that each transformer meets performance standards and operates
reliably under various conditions.
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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