1600kVA Oil Immersed Transformer
NPC ELECTRIC's 1600kVA oil-immersed transformer adopts internationally advanced technology and complies with international standards such as IEC and ANSI to ensure stable and reliable product performance. This transformer is widely used in the fields of power, industry, and infrastructure, with excellent load capacity and long life. Its efficient oil-immersed cooling system effectively improves the thermal management of the transformer and ensures long-term and efficient operation.
- 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 480/277V, 400/230V, 380/220V or customized
- H.V. Tap Range ± 2×2.5% HV taps or others
- Type Oil immersed distribution transformer
- BIL 30/95kV
- Standards IEEE, ANSI, NEMA, IEC, ISO
- Application Industrial Power Distribution，Commercial Buildings
- Power Rating 1600kVA
- Certificate UL, CESI, CE
- Cooling Method ONAN, ONAN/ONAF, KNAN, KNAN/KNAF
- Oil Mineral Oil or FR3
- Opeartion Step Down & Step Up
Technical Specifications
Customization Optional
Packing and Shipping
Manufacturer Test
Routine Testing
Application
Technical Specifications
1600kVA Oil Immersed Transformer
Technical Specifications
Accessories
| Technical Specifications | ||
| Rated Power | 1600 kVA | |
| Rating Primary Voltage | 2.4 - 34.5kV | |
| Secondary Voltage | 480/277V 400/230V 380/220V Customized |
|
| Frequency | 50/60Hz | |
| Vector Group | Dyn11, Yyn0, Dyn5 | |
| 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 | 800 kg | |
| Total Weight | 4500 kg | |
| Outline Dimensions（L×W×H）in. | 2600 × 1600 × 2400（mm) | |
| HV Bushing |
| LV Bushing |
| Tap changer |
| Oil level gauge |
| Oil temperature indicator |
| Pressure relief device |
| Pressure vacuum gauge |
| Lifting hook for complete transformer |
| Name plate |
| Radiators |
| Oil upper filtering valve |
| Oil drain valve with 3/8" sampler |
Customization Optional
1600kVA Oil Immersed Transformer
NPC ELECTRIC's 1600kVA oil-immersed transformers offer a variety of optional specifications to meet the needs of different customers. Different transformer voltage levels can be selected according to needs, including the voltage range on the high-voltage and low-voltage sides. The transformer can be equipped with an automatic voltage regulator (AVR) to provide a stable output voltage to ensure efficient operation of the power system. In order to improve the reliability of the equipment, an optional temperature monitoring system can also be used to monitor the oil temperature and winding temperature in real time to prevent overheating damage.
The transformer also supports anti-corrosion coating and is suitable for use in extreme environments, such as areas with heavy humidity or corrosive gases. Finally, a more efficient heat dissipation system can be configured according to customer needs to improve the operating efficiency and service life of the transformer.
Packing and Shipping
1600kVA Oil Immersed Transformer
NPC ELECTRIC's 1600kVA oil-immersed transformers are packed and transported with strict safety measures.
First, the transformer body is firmly fixed on a heavy wooden pallet to ensure that it will not move or be damaged during transportation. To reduce shock, all contact surfaces are protected with rubber pads to prevent vibration from causing damage to the equipment. The transformer's oil tank and all valves are sealed to prevent oil leakage.
The exterior is wrapped with a moisture-proof and rust-proof film to prevent external moisture from affecting the interior of the equipment. The external packaging of the transformer uses a sturdy wooden box that can withstand external impacts and ensure the safety of the transformer during transportation. The lifting position and precautions are clearly marked on the packaging box to prevent misoperation during transportation. In order to prevent the transformer from being affected by the external climate, a silicone desiccant is also included in the packaging to keep the equipment dry. All accessories, such as bushings, oil pillows, radiators, etc., are packed separately and placed in sturdy wooden boxes.
Important documents such as product manuals, test reports, warranty cards, etc., are placed in special document bags and transported with the goods. During transportation, the transformers are placed on flatbeds and secured with strong straps to prevent slipping. For international transport by sea and land, transformers are generally transported in containers or bulk carriers, with the best method selected based on the destination requirements.
Overall, the packaging and transportation of NPC ELECTRIC's 1600kVA oil-immersed transformers strictly follow international standards throughout the entire process, ensuring that the transformers reach customers safely and on time, maintaining the best performance and reliability of the equipment.
First, the transformer body is firmly fixed on a heavy wooden pallet to ensure that it will not move or be damaged during transportation. To reduce shock, all contact surfaces are protected with rubber pads to prevent vibration from causing damage to the equipment. The transformer's oil tank and all valves are sealed to prevent oil leakage.
The exterior is wrapped with a moisture-proof and rust-proof film to prevent external moisture from affecting the interior of the equipment. The external packaging of the transformer uses a sturdy wooden box that can withstand external impacts and ensure the safety of the transformer during transportation. The lifting position and precautions are clearly marked on the packaging box to prevent misoperation during transportation. In order to prevent the transformer from being affected by the external climate, a silicone desiccant is also included in the packaging to keep the equipment dry. All accessories, such as bushings, oil pillows, radiators, etc., are packed separately and placed in sturdy wooden boxes.
Important documents such as product manuals, test reports, warranty cards, etc., are placed in special document bags and transported with the goods. During transportation, the transformers are placed on flatbeds and secured with strong straps to prevent slipping. For international transport by sea and land, transformers are generally transported in containers or bulk carriers, with the best method selected based on the destination requirements.
Overall, the packaging and transportation of NPC ELECTRIC's 1600kVA oil-immersed transformers strictly follow international standards throughout the entire process, ensuring that the transformers reach customers safely and on time, maintaining the best performance and reliability of the equipment.
32
32 years of industry experience
Manufacturer Test
1600kVA Oil Immersed Transformer
Progress Test
During the manufacturing process of NPC ELECTRIC's 1600kVA oil-immersed transformers, strict raw material inspections are first carried out to ensure that all components meet high standards. Next, the various components of the transformer will be assembled on a professional production line and undergo preliminary mechanical strength tests. The transformer then enters the oil immersion process to ensure that the quality and sealing of the oil meet international standards. Subsequent high-voltage and load tests will verify the stability and reliability of the transformer in actual working conditions. Finally, after comprehensive inspection and testing, the transformer will be accompanied by a detailed test report and certificate of conformity to ensure that the performance is fully in line with expectations when it is delivered to the customer.
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
NPC ELECTRIC's 1600kVA oil-immersed transformers are manufactured and tested in strict accordance with international standards.
First, the core and coil parts of the transformer are manufactured on high-precision equipment to ensure stable and reliable electrical performance. Subsequently, all components are preliminarily assembled and strictly quality checked to ensure that each part meets the design requirements. All test data are recorded in detail and compared with the design parameters to ensure that the product meets the performance standards. Finally, after the final appearance and function inspection, the transformer will be packaged and prepared for shipment.
Through this series of rigorous testing and verification, NPC ELECTRIC ensures that each 1600kVA oil-immersed transformer can operate stably at the customer's site and meet high standards of use.
Routine Test - Winding Resistance
Purpose of Testing
The purpose of winding resistance testing is to detect the continuity and connection quality of the internal conductors of the motor or transformer windings, and to promptly detect potential faults such as open circuits, poor contact or local heating.
Testing Equipment
Winding resistance tester (e.g. OMICRON, DV Power, Raytech, Megger, ISA, etc.)
Test voltage source (commonly used are 6V, 10V, 20V, 40V or 100V, depending on the equipment model or customer requirements)
Temperature and humidity meter (used to record the ambient temperature and humidity during the test)
Test voltage source (commonly used are 6V, 10V, 20V, 40V or 100V, depending on the equipment model or customer requirements)
Temperature and humidity meter (used to record the ambient temperature and humidity during the test)
Pre-Test Preparation
Check if the instrument has been calibrated to ensure the test accuracy.
Disconnect the electrical connection between the test cable and the equipment to ensure that there is no external current or voltage interference.
Select a suitable voltage range for testing and set the test voltage according to the equipment requirements.
Disconnect the electrical connection between the test cable and the equipment to ensure that there is no external current or voltage interference.
Select a suitable voltage range for testing and set the test voltage according to the equipment requirements.
Test Progress
Connect the Test Instrument:
Connect the test equipment to the winding terminals of the device under test, making sure the connections are secure and properly grounded to avoid measurement errors.
Apply Test Voltage:
Select the appropriate test current according to the equipment specifications (such as test current for low-voltage windings, single-phase or three-phase windings).
Connect the test equipment to the winding terminals of the device under test, making sure the connections are secure and properly grounded to avoid measurement errors.
Apply Test Voltage:
Select the appropriate test current according to the equipment specifications (such as test current for low-voltage windings, single-phase or three-phase windings).
Measure and Record
Start the test and record the following parameters:
Winding resistance (usually expressed in units of "Ω")
Test current (A)
Test voltage (V)
Temperature (record the winding temperature before and after the test)
Winding resistance (usually expressed in units of "Ω")
Test current (A)
Test voltage (V)
Temperature (record the winding temperature before and after the test)
Temperature Correction
The measured winding resistance values are converted to a reference temperature (usually 20°C) based on a temperature correction formula to allow accurate evaluation and comparison.
Repeat Testing (if necessary)
Test the different windings (high voltage, medium voltage, low voltage) separately and make sure to record the resistance value of each winding.
Evaluation Criteria (Reference)
Resistance deviation is less than 5% (normal)
Resistance deviation is between 5% and 10% (warning)
Resistance deviation exceeds 10% (further inspection or corrective action is required)
Resistance deviation is between 5% and 10% (warning)
Resistance deviation exceeds 10% (further inspection or corrective action is required)
*These comprehensive tests ensure that each transformer meets performance standards and operates
reliably under various conditions.
Application
Power Distribution Networks, Industrial Applications, Infrastructure & Public Utilities
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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