220kV 230kV Power Transformer
NPC ELECTRIC's 220kV and 230kV power transformer complies with the International Electrotechnical Commission (IEC) standards as below: 1. IEC 60076 Power Transformers; 2. AS NZS 60076 Power Transformers CSAC88-16 Power Transformers; 3. ANSI/IEEE C57.12.00 IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers; 4. GOST R 52719 Power Transformers - General Specifications; 5. EN60076 Poer Transformer; 6. Local After-Sales Services In North America South
- Primary Voltage Ratings 220kV 230kV
- Secondary Voltage Ratings 69/35/37/34.5/26.4./11/10.5/6.6/13.2 kV or others
- H.V. Tap Range ± 8×1.25% HV taps or others
- Type Oil-immersed power transformer
- BIL 900kV
- Standards IEEE, ANSI, IEC, GB
- Application Urban power grid transmission and transformation systems, large industrial parks and heavy industrial bases etc
- Power Rating 5000-250000kVA
- Certificate UL, ISO, CESI
- Cooling Method ONAN/ ONAF
- Opeartion Step Down & Step Up
Technical Specifications
Customization Optional
Packing and Shipping
Manufacturer Test
Routine Testing
Application
Technical Specifications
220kV 230kV Power Transformer
Technical Specifications
Accessories
| Rated Power | 5000-250000kVA |
| Rating Primary Voltage | 220kV 230kV |
| Secondary Voltage |
69/35/37/34.5/26.4/11/10.5/6.6/13.2 kV Customized |
| Frequency | 50/60Hz |
| Vector Group | Dyn11, YD11, YNd11 or anothers |
| Winding Material | Aluminum/Copper |
| Efficiency | As IEEE, CAS Std or Customized |
| Impedance Voltage | As IEC |
| Altitude | ≤1,000m or Customized |
| Enclosure material | Mid Steel |
| HV Bushing |
| LV Bushing |
| OLTC/NLTC |
| Lifting hook for complete transformer |
| Name plate |
| Oil temperature |
| Winding temperature |
| Radiators |
| Oil level |
| Pressure relief valve |
| CT |
Customization Optional
220kV 230kV Power Transformer
NPC ELECTRIC's 220kV 230kV power transformer is designed for high-voltage power transmission applications and has a number of key performance advantages. It uses high-quality silicon steel sheets and a low-loss design to significantly reduce operating energy consumption. The transformer has excellent short-circuit resistance, which improves the stability and safety of system operation. The oil tank adopts a corrugated structure to effectively compensate for the volume change caused by temperature changes and extend the service life. The insulation system uses high-grade insulation materials to ensure long-term reliability. The equipment noise control is at the leading level in the industry and meets environmental protection requirements.
The cooling system has a flexible configuration and can support multiple cooling methods such as ONAN and ONAF. It has an intelligent monitoring function and can remotely monitor key parameters such as oil temperature, load, and voltage in real time. The shell has good anti-corrosion treatment and is suitable for various harsh environments. It has a compact structure, easy installation and maintenance, and reduces operation and maintenance costs. This series of products has passed a number of international quality and safety certifications and has won wide recognition from domestic and foreign users. Overall, NPC ELECTRIC's 220kV power transformer is an ideal choice for efficient, stable, and intelligent power transmission and transformation systems.
Packing and Shipping
220kV 230kV Power Transformer
In order to ensure the safety and integrity of the transportation of 220kV and 230kV power transformers, we have taken strict packaging and transportation measures.
First, the transformer will be thoroughly inspected before leaving the factory to ensure that there is no damage. Then, we will use high-quality wooden boxes for packaging to avoid damage during transportation. The inside of the wooden box will be filled with shockproof materials to ensure that the transformer will not be affected by vibration or impact during transportation. At the same time, all exposed metal parts will be covered with appropriate anti-rust materials to prevent corrosion caused by a humid environment.
During transportation, we will select experienced logistics companies and purchase full transportation insurance for the transformer to deal with any emergencies. The insurance coverage includes all possible risks during transportation, such as damage, loss, or delay.
During transportation, we will track the transportation status of the transformer and keep in touch with customers in time to ensure that customers get the latest logistics information in time. All transportation methods and routes will be planned according to the specific requirements of the destination to ensure the safety and efficiency of transportation. During transportation, we will avoid any possible risk factors and take effective safety measures. If any abnormal situation occurs during transportation, we will deal with it in time and provide compensation.
After transportation, the transformer will be delivered to the destination smoothly according to the customer's requirements. We promise to provide high-quality service to every customer and ensure that the transformer can arrive at the designated location intact. We look forward to further cooperation with you and guarantee to provide you with the best products and services.
First, the transformer will be thoroughly inspected before leaving the factory to ensure that there is no damage. Then, we will use high-quality wooden boxes for packaging to avoid damage during transportation. The inside of the wooden box will be filled with shockproof materials to ensure that the transformer will not be affected by vibration or impact during transportation. At the same time, all exposed metal parts will be covered with appropriate anti-rust materials to prevent corrosion caused by a humid environment.
During transportation, we will select experienced logistics companies and purchase full transportation insurance for the transformer to deal with any emergencies. The insurance coverage includes all possible risks during transportation, such as damage, loss, or delay.
During transportation, we will track the transportation status of the transformer and keep in touch with customers in time to ensure that customers get the latest logistics information in time. All transportation methods and routes will be planned according to the specific requirements of the destination to ensure the safety and efficiency of transportation. During transportation, we will avoid any possible risk factors and take effective safety measures. If any abnormal situation occurs during transportation, we will deal with it in time and provide compensation.
After transportation, the transformer will be delivered to the destination smoothly according to the customer's requirements. We promise to provide high-quality service to every customer and ensure that the transformer can arrive at the designated location intact. We look forward to further cooperation with you and guarantee to provide you with the best products and services.
32
32 years of industry experience
Manufacturer Test
220kV 230kV Power Transformer
Progress test
The Transformer Manufacturer Progress Test for the NPC Electric 220kV 230kV Power Transformer involves rigorous quality assurance checks and testing to ensure compliance with industry standards. The tests typically include insulation resistance, ratio testing, winding resistance, and load loss measurements, all conducted under varying operational conditions. Additionally, temperature rise tests are performed to assess the transformer's efficiency during continuous operation. After successful completion of these tests, a comprehensive report is generated, confirming the transformer's readiness for deployment. This process guarantees that the 220kV power transformer is safe, reliable, and performs at optimal levels.
Design Tests
All transformers will be tested after finishing the production test items as below:
♦ Leak testing with pressure for liquid-immersed transformers
♦ Test of transformer oil
♦ Measurement of voltage ratio and check of phase displacement
♦ Measurement of winding DC resistance
♦ Measurement of d. c. Insulation resistance between each winding to earth, and check of the core and frame insulation
♦ Capacitive bushing test
♦ Measurement of dissipation factor (tan δ) of the insulation system capacitances, and determination of capacitances windings-to-earth
♦ Measurement of no-load loss and current at 90%,100%,110% of rated voltage
♦ Operation test on on-load tap-changer
♦ Measurement of short-circuit impedance and load loss
♦ Lightning impulse test
♦ Induced-voltage test with partial discharge measurement
♦ Auxiliary wiring check
♦ Current transformer test
♦ Frequency response analysis test
Transformer Factory Acceptance Test
NPC Electric conducts rigorous quality control testing on every transformer or representative samples, as well as on specific components and materials, to ensure compliance with design specifications throughout the production process.
The Factory Acceptance Test (FAT) for a power transformer is a critical step performed before shipment to verify that the unit meets all applicable standards and delivers optimal performance. The FAT includes the following key procedures:
Visual Inspection: Evaluates the transformer’s physical condition, including the enclosure, terminals, and labeling, to ensure conformance with design and safety requirements.
Electrical Testing: Involves measuring winding resistance, insulation resistance, and performing turns ratio tests to validate electrical integrity and functionality.
Dielectric Strength Test: Applies high voltage across the insulation system to ensure it can endure both normal and transient operating voltages without failure.
Load Testing: Simulates real-world operating conditions to assess the transformer’s voltage regulation, temperature rise, and overall efficiency under load.
Protection Device Testing: Verifies the proper operation of integrated protective components such as thermal sensors, temperature relays, and tap changers (if applicable).
Routine Test - Capacitive Bushing Test
Purpose of Testing
The purpose of the capacitive bushing test is to assess the condition and insulation performance of the capacitive bushings used in transformers and other electrical equipment. This test helps identify any deterioration, leakage currents, or potential faults in the bushing's dielectric material, ensuring that the bushing can safely handle high voltages without causing electrical failures or safety hazards. It is essential for maintaining reliable transformer operation and preventing unplanned downtime.
Testing Equipment
Capacitive Bushing Tester
Insulation Resistance Tester (Megohmmeter)
High-Voltage AC/DC Power Supply
Partial Discharge Detector
Insulation Resistance Tester (Megohmmeter)
High-Voltage AC/DC Power Supply
Partial Discharge Detector
Pre-Test Preparation
Conduct a thorough visual inspection of the capacitive bushing to check for any physical damage, such as cracks, leaks, or signs of wear, which could affect the test results or pose a safety risk.
Ensure that the capacitive bushing tester or other required test equipment is properly calibrated and functioning. Inspect the test leads, clamps, and connections to ensure they are in good condition and free from damage.
Make sure all safety precautions are in place, such as grounding the equipment, ensuring the testing area is clear of unnecessary personnel, and that appropriate personal protective equipment (PPE) is being used by testing personnel.
Ensure that the capacitive bushing tester or other required test equipment is properly calibrated and functioning. Inspect the test leads, clamps, and connections to ensure they are in good condition and free from damage.
Make sure all safety precautions are in place, such as grounding the equipment, ensuring the testing area is clear of unnecessary personnel, and that appropriate personal protective equipment (PPE) is being used by testing personnel.
Test Progress
Connection of Test Equipment:
The test begins by connecting the capacitive bushing test equipment to the bushing’s terminals. The equipment typically includes a high-voltage power supply, a voltmeter, and a measurement device to assess the bushing’s capacitance and insulation. Apply Test Voltage:
A test voltage, usually an AC voltage within the specified range for the bushing, is applied to the capacitive bushing. The applied voltage is typically lower than the rated voltage of the bushing to prevent any damage during testing.
The test begins by connecting the capacitive bushing test equipment to the bushing’s terminals. The equipment typically includes a high-voltage power supply, a voltmeter, and a measurement device to assess the bushing’s capacitance and insulation. Apply Test Voltage:
A test voltage, usually an AC voltage within the specified range for the bushing, is applied to the capacitive bushing. The applied voltage is typically lower than the rated voltage of the bushing to prevent any damage during testing.
Test Standard
IEC 60076 Oil-immersed power transformers
*These comprehensive tests ensure that each transformer meets performance standards and operates
reliably under various conditions.
Application
Urban power grid transmission and transformation systems, large industrial parks and heavy industrial bases etc
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
Product Packaging
Transformers Packaging (1)
Transformers Packaging (2)
Transformers Packaging (3)
Transformers Packaging (4)
Transformers Packaging (5)
Transformers Packaging (6)
Transformers Packaging (7)
Transformers Packaging (8)
Related Products
35kV 46kV Power Transformer
NPC ELECTRIC's 35kV and 46kV power transformer complies with international standards such as IEC and ANSI, and features high efficiency, low loss, and strong insulation. This product is widely used in power grid main transformers, power plants, industrial and mining enterprises, and large infrastructure projects. It has a compact structure and reliable operation, and is suitable for all types of outdoor and indoor installation environments.
66kV 69kV Power Transformer
66 69kV power transformer uses high-performance silicon steel sheets and a fully sealed structure design, with excellent insulation performance and thermal stability. The product complies with international and national standards, such as 1 . IEC 60076 Power Transformers; 2. AS NZS 60076 Power Transformers CSAC88-16 Power Transformers 3.ANSI/IEEE C57.12.00 IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers; 4. GOST R 52719 Power Transformers - General Specifications; 5. EN60076 Poer Transformer;8. Local After-Sales Services In North America South
110kV 115kV Power Transformer
NPC ELECTRIC's 110kV and 115kV power transformers are designed with advanced low-loss silicon steel sheets and efficient cooling systems, complying with international standards such as IEC 60076 and GB 1094, ensuring stable and reliable operation in high-voltage transmission systems. They are widely used in large power plants, substations, and industrial parks, providing safe and efficient power conversion and transmission solutions for power grids.
132kV 138kV Power Transformer
132kV 138kV power transformer complies with international standards as below standard: 1. IEC 60076 Power Transformers; 2. AS NZS 60076 Power Transformers CSAC88-16 Power Transformers; 3. ANSI/IEEE C57.12.00 IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers; 4. GOST R 52719 Power Transformers - General Specifications; 5. EN60076 Poer Transformer; 6. Local After-Sales Services In North America SouthFAQ From Customers
-
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.
-
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.
-
Do you have UL listed?Yes, our transformer has UL listed. We have exported to America many pad mounted transformer,substation transformer and HV.
Welcome your inquiry
Honesty, Integrity, Frugality, Activeness and Passion