132kV High Voltage Outdoor Power Substation Transformer for Grid Systems
The 132kV High Voltage Outdoor Power Substation Transformer is engineered to support modern grid systems that demand high reliability, operational stability, and long-term performance. Designed for continuous outdoor operation, it features a robust oil-immersed insulation system combined with a mechanically reinforced structure to withstand electrical stress, environmental exposure, and grid fluctuations. The transformer is optimized for efficient power transfer with controlled losses and stable voltage regulation across varying load conditions. Its thermal design ensures effective heat dissipation, supporting extended service life even under high ambient temperatures. Suitable for utility substations and large-scale grid infrastructure, this transformer meets stringent operational and safety requirements while maintaining ease of maintenance and dependable long-term operation in complex power networks.
- Primary Voltage Ratings 132kV, 138kV or others
- Secondary Voltage Ratings 32.4/13.8/11/10.5/6.6/6.3kV or customized
- H.V. Tap Range ± 8×2.5% HV taps or others
- Type Oil-immersed power transformer
- BIL up to 350kV
- Standards IEEE, ANSI, IEC
- Application high-voltage outdoor substations, regional grid interconnection points, utility transmission systems
- Power Rating Up to 40 MVA
- Certificate UL, CESI, ISO, KEMA
- Cooling Method ONAN/ ONAF
- Opeartion Step Down & Step Up
Technical Specifications
Customization Optional
Packing and Shipping
Manufacturer Test
Routine Testing
Application
Technical Specifications
132kV High Voltage Outdoor Power Substation Transformer for Grid Systems
Technical Specifications
Accessories
| Rated Power | Up to 40 MVA |
| Rating Primary Voltage | 132kV, 138kV |
| Secondary Voltage |
32.4/13.8/11/10.5/6.6/6.3 kV Customized |
| Frequency | 50/60Hz |
| Vector Group | Dyn11, YD11, YNd11 |
| 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
132kV High Voltage Outdoor Power Substation Transformer for Grid Systems
The 132kV High Voltage Outdoor Power Substation Transformer offers extensive customization to meet diverse grid architectures and project-specific technical requirements. Electrical customization includes adjustable rated capacity, tailored primary and secondary voltage combinations, selectable frequency ratings, and optimized impedance values to ensure seamless grid integration. Multiple vector group configurations can be engineered to match existing network phase arrangements. Customers may choose different conductor materials and insulation structures based on efficiency targets, operating temperature limits, and lifecycle expectations. Voltage control solutions can be adapted through customized tap changer configurations, enabling precise regulation under fluctuating load and seasonal demand changes. From a mechanical and operational standpoint, the transformer can be adapted for challenging installation environments. Structural reinforcement options are available for seismic zones or areas with high wind loads.
Specialized surface treatments and coating systems provide enhanced corrosion resistance for coastal, desert, or industrial locations. Cooling system configurations can be adjusted to support variable load profiles and ambient conditions, ensuring thermal stability and consistent performance. Optional accessories include advanced monitoring and protection devices such as gas detection relays, multi-point temperature sensing, pressure relief mechanisms, oil level supervision, and digital monitoring interfaces for condition-based maintenance. Noise mitigation solutions, environmentally considerate insulating fluids, customized paint colors, and region-specific marking standards are also available. Each customized design undergoes detailed engineering validation to ensure compliance with international standards and long-term operational reliability.
Packing and Shipping
132kV High Voltage Outdoor Power Substation Transformer for Grid Systems
The packing and shipping process for the 132kV High Voltage Outdoor Power Substation Transformer is designed to protect the equipment from mechanical damage, environmental exposure, and contamination throughout transportation. Prior to packing, the transformer is thoroughly inspected, cleaned, and treated with protective coatings. All external interfaces are sealed, and sensitive areas are secured to prevent moisture ingress. Components such as bushings, cooling assemblies, conservators, and control panels are removed when necessary and packed separately in reinforced export-grade crates with shock-absorbing linings.
The transformer main unit is firmly mounted on a heavy-duty transport base engineered to distribute weight evenly and reduce stress during handling. Vibration-damping materials and reinforced bracing are applied at critical points to minimize the risk of deformation or displacement during transit. Protective wrapping systems, including moisture-resistant films and desiccants, are used to maintain internal dryness. For long-distance or overseas transportation, additional preservation measures such as vacuum sealing or inert gas filling may be implemented to safeguard insulation quality.
Shipping methods are selected according to transformer dimensions, weight, and destination logistics. Depending on project requirements, the transformer may be shipped using flat-rack containers, open-top containers, or break-bulk cargo. All packing materials comply with international export regulations, including ISPM-15 standards for wooden packaging. Clear markings identify lifting points, center of gravity, orientation requirements, and safety instructions to ensure proper handling during loading, unloading, and site transfer.
Each shipment is accompanied by complete documentation, including packing lists, quality certificates, inspection records, test reports, drawings, and operation manuals. Upon arrival, customers receive detailed guidance for unpacking, temporary storage, and installation. Optional services such as on-site technical supervision, oil processing, component reassembly, testing, and commissioning support are available to facilitate efficient installation and reliable commissioning.
The transformer main unit is firmly mounted on a heavy-duty transport base engineered to distribute weight evenly and reduce stress during handling. Vibration-damping materials and reinforced bracing are applied at critical points to minimize the risk of deformation or displacement during transit. Protective wrapping systems, including moisture-resistant films and desiccants, are used to maintain internal dryness. For long-distance or overseas transportation, additional preservation measures such as vacuum sealing or inert gas filling may be implemented to safeguard insulation quality.
Shipping methods are selected according to transformer dimensions, weight, and destination logistics. Depending on project requirements, the transformer may be shipped using flat-rack containers, open-top containers, or break-bulk cargo. All packing materials comply with international export regulations, including ISPM-15 standards for wooden packaging. Clear markings identify lifting points, center of gravity, orientation requirements, and safety instructions to ensure proper handling during loading, unloading, and site transfer.
Each shipment is accompanied by complete documentation, including packing lists, quality certificates, inspection records, test reports, drawings, and operation manuals. Upon arrival, customers receive detailed guidance for unpacking, temporary storage, and installation. Optional services such as on-site technical supervision, oil processing, component reassembly, testing, and commissioning support are available to facilitate efficient installation and reliable commissioning.
32
32 years of industry experience
Manufacturer Test
132kV High Voltage Outdoor Power Substation Transformer for Grid Systems
Progress test
Progress testing for the 132kV High Voltage Outdoor Power Substation Transformer is implemented as a structured quality control process throughout manufacturing. All incoming materials, including magnetic core steel, conductors, insulation components, and insulating oil, are inspected to verify compliance with approved technical specifications. During core assembly and winding operations, inspections focus on dimensional precision, mechanical stability, and insulation integrity. The active assembly undergoes controlled drying and vacuum processing, with continuous monitoring to ensure proper moisture removal and insulation performance.
Intermediate electrical checks are conducted at key production stages, including continuity verification, winding resistance measurement, and preliminary ratio confirmation. Tank fabrication is inspected for welding quality, dimensional accuracy, and surface treatment consistency. Pressure and sealing tests are performed before oil filling to confirm structural integrity. All progress test results are documented and reviewed to ensure early identification of potential deviations and consistent manufacturing quality.
Design Tests
All transformers will be tested after finishing the production test items as follows:
♦ 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
The Factory Acceptance Test (FAT) for the 132kV High Voltage Outdoor Power Substation Transformer is conducted after final assembly to confirm full compliance with contractual and technical requirements. Electrical routine tests include winding resistance measurement, voltage ratio verification, vector group confirmation, polarity checks, and insulation resistance evaluation. Dielectric testing consists of applied voltage and induced overvoltage tests to validate insulation strength under rated conditions.
Performance tests assess no-load losses, load losses, impedance characteristics, and thermal behavior to verify efficiency and temperature stability. Partial discharge testing evaluates insulation condition, while impulse testing confirms the transformer’s ability to withstand transient overvoltage events. Mechanical inspections cover tank pressure testing, oil leakage checks, cooling system operation, and tap changer functionality. Oil samples are analyzed to confirm dielectric strength and cleanliness. All FAT results are compiled into a comprehensive report and approved prior to shipment.
Routine Test - No Load Loss Test
Purpose of Testing
The purpose of No Load Loss Test is to measure the power loss of the equipment when it is not loaded to evaluate the iron loss and other core losses. This test can help understand the energy efficiency of the equipment and help determine the performance of the transformer or motor when it is running at no load.
Testing Equipment
No Load Loss tester (e.g. OMICRON, Megger, Schneider Electric, etc.)
Voltage source (usually 230V, 400V or customized according to customer requirements to adapt to different equipment)
Power analyzer (used to measure power loss and efficiency)
Ammeter and voltmeter
Temperature and humidity meter
Voltage source (usually 230V, 400V or customized according to customer requirements to adapt to different equipment)
Power analyzer (used to measure power loss and efficiency)
Ammeter and voltmeter
Temperature and humidity meter
Pre-Test Preparation
Disconnect the power supply of the device and ensure that the device is properly grounded and discharged to ensure safe operation.
Please ensure that the test is carried out in a suitable environment with a relative humidity of less than 75% and avoid rainy days or extreme weather (recommended temperature range: 20-30°C).
Please ensure that the test is carried out in a suitable environment with a relative humidity of less than 75% and avoid rainy days or extreme weather (recommended temperature range: 20-30°C).
Test Progress
Connect the Test Instrument:
Connect the test equipment to the high voltage side of the transformer, making sure the wiring is correct and the equipment is grounded.
Apply Test Voltage:
Usually it is 110% of the rated voltage, for example, if the rated voltage of the transformer is 33 KV, apply 36.3 KV (110%).
Connect the test equipment to the high voltage side of the transformer, making sure the wiring is correct and the equipment is grounded.
Apply Test Voltage:
Usually it is 110% of the rated voltage, for example, if the rated voltage of the transformer is 33 KV, apply 36.3 KV (110%).
Test Standard
IEC 60076 Oil-immersed power transformers
Measure and Record
Start the test and record the following parameters:
No Load Current
No Load Loss
Power Factor
Current
Voltage
Temperature and Humidity
No Load Current
No Load Loss
Power Factor
Current
Voltage
Temperature and Humidity
Temperature Correction
The power loss of the test results is corrected to a reference temperature (usually 20°C) to ensure an accurate evaluation.
Evaluation Criteria (Reference)
No-load loss ≤ 0.2% rated power (excellent)
No-load loss < 0.2% ≤ 0.5% rated power (good)
No-load loss > 0.5% rated power (further inspection or corrective action required)
No-load loss < 0.2% ≤ 0.5% rated power (good)
No-load loss > 0.5% rated power (further inspection or corrective action required)
Repeat Testing (if necessary)
Test at different rated voltages, especially when the transformer has multiple capacity levels, and perform no-load loss tests for each capacity level separately.
*These comprehensive tests ensure that each transformer meets performance standards and operates
reliably under various conditions.
Application
This transformer is widely used in high-voltage outdoor substations, regional grid interconnection points, utility transmission systems, industrial power hubs, and infrastructure projects requiring stable, safe, and long-term high-voltage power transformation.
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
5kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC has been focusing on the production of 5kVA Conventional Type Single Phase Pole Mounted transformer for decades, complying with international standards such as IEC 60076, ISO 9001, IEEE C57.12.00, etc. to ensure its safety, performance and reliability. NPC ELECTRIC’s 5kVA conventional single-phase pole-mounted transformer is a small power transformer equipment, usually installed on power poles. This transformer is widely used in daily life and small industrial fields for its reliability and efficient power conversion capabilities, ensuring a stable and safe power supply.
25000kVA Oil-Immersed Copper Transformer For Substation
The 25,000kVA oil-immersed copper transformer is engineered for high-standard power distribution in large industrial facilities, utility networks, and high-voltage substations. Built with premium pure copper windings, it delivers exceptional electrical conductivity, reduced losses, and long-term operational stability. The oil-immersed cooling system ensures efficient heat dissipation, allowing the transformer to perform reliably under continuous heavy load conditions.
1000kVA Three Phase Pad Mounted Transformer
The 1000kVA three-phase pad transformer is an efficient and reliable power transformer designed for high-load applications such as large commercial, industrial and distribution systems. The transformer has a high power capacity of 1000kVA and can stably provide continuous power supply for three-phase power systems to meet large-scale power needs. With a rugged and durable casing and protective design, it is suitable for operation in various outdoor environments and can effectively resist adverse weather conditions.
1000kVA Oil Immersed Transformer
NPC ELECTRIC's 1000kVA oil-immersed transformer is made of high-quality silicon steel sheets and high-quality insulation materials, with high efficiency, low loss, and long life. The product complies with international standards such as IEC 60076 and GB 1094, and has passed strict type tests and factory tests to ensure safety and reliability.
40kV 50MVA Oil Immersed Three-Phase MV&HV Power Transformer Copper
The 40kV 50MVA Oil Immersed Three-Phase MV&HV Power Transformer Copper is engineered for large-scale transmission and industrial substations. Equipped with high-purity copper windings, ONAN/ONAF cooling, and ±8×1.25% on-load tap changer, it achieves ultra-low losses (S13/S14 series). Fully compliant with IEC 60076 and GB/T 1094, it withstands 200 kV lightning impulse and PD <10 pC. Robust corrugated-fin tank with detachable radiators ensures excellent thermal performance under continuous heavy load. Typical voltages: 40±8×1.25%/11kV or 40/6.3kV. Vacuum oil filling and nitrogen sealing guarantee 35+ years of reliable, maintenance-free operation in harsh environments. Trusted by utilities and EPC contractors worldwide.
85kV 1850kVA Outdoor Oil Immersed Distribution Transformer Copper
The 85kV 1850kVA Outdoor Oil Immersed Distribution Transformer Copper is specially developed for 66–110 kV regional distribution networks and industrial users. It adopts 99.99 % electrolytic copper windings, high-permeability S13 grain-oriented silicon steel core, corrugated-fin tank + ONAN natural cooling, and ±5 % off-circuit tap changer (on-load optional). Fully compliant with IEC 60076, lightning impulse withstand 395 kV peak, PD <10 pC, noise ≤60 dB. Fully sealed conservator or sealed-type design with vacuum oil filling + nitrogen sealing guarantees >30-year maintenance-free operation even in high-altitude, high-pollution, or coastal areas. Ideal for mining, metallurgy, wind/solar grid connection, petrochemical plants, and urban 85 kV substations requiring maximum reliability and minimum losses.FAQ 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