3000kVA Three Phase Pad Mounted Transformer
NPC ELECTRIC's 3000kVA Three Phase Pad Mounted transformer complies with international standards such as IEC and IEEE. It adopts a fully sealed and fully insulated design and has excellent overload capacity and safety performance. It is widely used in industrial parks, commercial complexes, new energy power stations and other scenarios, and is suitable for outdoor ground installation. The product has a compact structure, reliable operation, and easy maintenance, making it an ideal choice for modern power 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, CSA
- Application EV charging, BESS, Data center, Industry, Renewable energy
- Power Rating 3000kVA
- Certificate UL, CUL, CSA, SGS
- 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
3000kVA Three Phase Pad Mounted Transformer
Technical Specifications
Accessories
| Rated Power | 3000 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 | 2400 kg |
| Total Weight | 7000 kg |
| Outline Dimensions（L×W×H）in. | 2400×2600×2400（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
3000kVA Three Phase Pad Mounted Transformer
The optional specifications of the 3000kVA Three Phase Pad Mounted transformers provide a variety of customization options to meet different application environments and customer needs. Users can choose different high/low voltage levels to adapt to specific power supply system requirements. The cooling method can be selected from natural oil circulation cooling (ONAN) or forced air cooling (ONAF) to improve heat dissipation efficiency. In addition, different types of transformer oil (such as mineral oil, environmentally friendly vegetable oil or high-temperature resistant silicone oil) can be selected to meet special application requirements.
In terms of structural design, enhanced anti-corrosion coatings can be provided, which are suitable for environments with high humidity, high salt fog or severe pollution. At the same time, optional high altitude or extreme temperature adaptation designs can be provided to ensure the reliable operation of the equipment under harsh conditions. For operation monitoring and safety protection, optional load tap changers (OLTCs) can be used to achieve voltage regulation, integrated intelligent monitoring systems (including temperature, oil level, and load monitoring), as well as lightning arresters, fuses and other protective devices to improve operation safety and maintenance convenience. These optional configurations make the transformer more flexible and meet the power needs of different scenarios.
Packing and Shipping
3000kVA Three Phase Pad Mounted Transformer
The packaging and shipping of NPC Electric's 3000kVA Three Phase Pad Mounted transformers are strictly carried out in accordance with international transportation standards to ensure that the equipment arrives at the destination safely and intact during long-distance transportation.
Transformers are usually fixed with sturdy steel frames or wooden boxes, and anti-vibration pads are used to reduce shock during transportation. All exposed metal parts are treated to prevent rust and are additionally protected with moisture-proof membranes or sealed covers to prevent salt spray and moisture corrosion. Sensitive parts (such as terminals, oil level gauges, and pressure relief valves) are reinforced with additional protective covers or filling materials to avoid damage.
Small or medium-sized transformers can be transported in standard containers and reinforced to ensure stability. Larger transformers are usually transported in frame or open-top containers and reinforced with steel cables and fixed brackets to prevent displacement. The center of gravity is calculated before transportation to ensure that the center of gravity is balanced during loading and unloading to avoid tilting or damage. After the transformer arrives at the port, it will be hoisted by professional equipment and stored or transported to the final destination in a specified manner.
The entire packaging and transportation process is carried out in accordance with international shipping standards to ensure the safety and reliability of the transformer during long-distance transportation, avoid damage caused by external environmental factors, and thus ensure the final delivery quality of the product.
Transformers are usually fixed with sturdy steel frames or wooden boxes, and anti-vibration pads are used to reduce shock during transportation. All exposed metal parts are treated to prevent rust and are additionally protected with moisture-proof membranes or sealed covers to prevent salt spray and moisture corrosion. Sensitive parts (such as terminals, oil level gauges, and pressure relief valves) are reinforced with additional protective covers or filling materials to avoid damage.
Small or medium-sized transformers can be transported in standard containers and reinforced to ensure stability. Larger transformers are usually transported in frame or open-top containers and reinforced with steel cables and fixed brackets to prevent displacement. The center of gravity is calculated before transportation to ensure that the center of gravity is balanced during loading and unloading to avoid tilting or damage. After the transformer arrives at the port, it will be hoisted by professional equipment and stored or transported to the final destination in a specified manner.
The entire packaging and transportation process is carried out in accordance with international shipping standards to ensure the safety and reliability of the transformer during long-distance transportation, avoid damage caused by external environmental factors, and thus ensure the final delivery quality of the product.
32
32 years of industry experience
Manufacturer Test
3000kVA Three Phase Pad Mounted Transformer
Progress test
NPC Electric's 3000kVA Three Phase Pad Mounted transformer factory production process testing includes but is not limited to quality inspection of key components such as coils, cores, and insulation materials; testing the insulation system of the transformer; measuring the no-load loss, load loss, and short-circuit impedance of the transformer; and conducting power frequency withstand voltage and impulse withstand voltage tests on the transformer. Through these tests, it can be ensured that the transformer reaches the best performance standards before leaving the factory, complies with industry specifications, and operates safely and stably in various application environments.
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 3000kVA Three Phase Pad Mounted transformer factory acceptance test (Transformer Factory Acceptance Test, FAT) is a key step to ensure that the transformer meets the design standards and customer requirements before delivery. This test is usually carried out by the manufacturer in the factory, and customer representatives may be invited to witness it to verify the quality, performance and safety of the transformer.
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
EV charging, BESS, Data center, Industry, Renewable energy
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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