zishengelectric
Project Partners
Phone/WhatsApp: 8619131285373
Email: info@zishengtransformer.com
Factory Headquarters: No. 118, Jingyi Street, Economic Development Zone.
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Project Partners
Phone/WhatsApp: 8619131285373
Email: info@zishengtransformer.com
Factory Headquarters: No. 118, Jingyi Street, Economic Development Zone.
The 150kVA Three Phase Pad Mounted Transformer is a high-efficiency outdoor distribution transformer designed to provide reliable medium-voltage to low-voltage power conversion for utility networks, commercial facilities, industrial plants, renewable energy projects, and infrastructure applications.
Unlike traditional pole-mounted transformers, the pad mounted transformer is installed on a concrete foundation and enclosed in a secure metal cabinet, providing improved safety, easier maintenance, and better protection against environmental conditions. It is widely used in underground distribution systems where reliability, safety, and compact installation are important requirements.
Manufactured by an experienced transformer factory, the 150kVA three phase pad mounted transformer is designed according to international standards such as IEC, ANSI, and IEEE. The transformer integrates advanced core technology, high-quality winding materials, and a robust enclosure design to ensure stable operation, low energy losses, and long service life.
The 150kVA pad mounted transformer adopts a three-phase oil-immersed structure with natural oil circulation cooling (ONAN). The transformer body is installed inside a sealed steel enclosure, which protects internal components from rain, dust, humidity, and mechanical impact.
The transformer core uses high-quality grain-oriented silicon steel sheets with optimized magnetic circuit design. This reduces no-load losses, improves energy efficiency, and minimizes operating noise.
The winding system is manufactured using high-conductivity copper or aluminum conductors with high-temperature insulation materials. The winding structure is optimized to enhance mechanical strength and withstand short-circuit forces during abnormal operating conditions.
The tank structure is designed with excellent sealing performance to prevent oil leakage and moisture penetration, ensuring reliable operation in outdoor environments.
The 150kVA three phase pad mounted transformer provides stable voltage conversion for medium-voltage distribution systems. It is suitable for continuous operation in power distribution networks requiring high reliability.
The transformer offers:
The pad mounted design allows installation in urban areas, commercial zones, industrial parks, and renewable energy sites where space is limited.
The enclosed cabinet provides:
Optional safety designs include:
Energy efficiency is a key consideration for modern power distribution systems.
The transformer is designed with:
These features help reduce electricity consumption during long-term operation and improve overall project economics.
The transformer can be customized according to different regional grid requirements.
Common configurations include:
Other voltage combinations are available according to customer requirements.
The cabinet is manufactured from high-strength steel with corrosion-resistant treatment suitable for outdoor environments.
The enclosure can be customized with different protection levels and coating systems:
The robust structure allows reliable operation under:
The 150kVA pad mounted transformer consists of high-quality electrical components, including:
Optional protection devices include:
The 150kVA pad mounted transformer is widely used in:
It connects distributed energy sources to medium-voltage distribution networks while maintaining stable power transmission.
Used by electric utilities for:
Suitable for:
Providing safe and reliable power supply for daily operations.
Commonly installed in:
The transformer provides dependable power for motors, production equipment, and industrial systems.
Each 150kVA three phase pad mounted transformer follows strict manufacturing procedures:
Technical requirements are reviewed and transformer parameters are confirmed.
High-quality silicon steel sheets are cut and assembled with precision equipment.
Copper or aluminum windings are produced using automatic winding machines.
The transformer body, tank, accessories, and protection components are assembled.
High-quality insulating oil is filled under controlled conditions.
Every transformer undergoes complete testing before delivery.
Routine tests include:
✔ Transformer ratio test
✔ Winding resistance test
✔ No-load loss test
✔ Load loss test
✔ Impedance voltage test
✔ Insulation resistance test
✔ Applied voltage test
✔ Induced voltage test
✔ Oil leakage inspection
✔ Appearance inspection
Additional tests can be provided according to customer requirements.
For EPC contractors and international projects, we provide:
Factory Direct Manufacturing
Direct supply from transformer manufacturer with professional engineering support.
Customized Solutions
Voltage, accessories, protection systems, and technical specifications can be adjusted according to project requirements.
International Standards
Production available according to IEC, ANSI, IEEE, and customer standards.
Reliable Long-Term Operation
Designed for stable performance in demanding outdoor environments.
The 150kVA Three Phase Pad Mounted Transformer provides a safe, efficient, and flexible power distribution solution for modern utility, industrial, commercial, and renewable energy projects.
| Item | Specification |
|---|---|
| Product Type | Three Phase Pad Mounted Transformer |
| Rated Capacity | 150 kVA |
| Phase | Three Phase |
| Frequency | 50 Hz / 60 Hz |
| Primary Voltage | 6.6 kV / 10 kV / 11 kV / 13.8 kV / 15 kV / 20 kV / 22 kV / 33 kV / Customized |
| Secondary Voltage | 380 V / 400 V / 415 V / 480 V / Customized |
| High Voltage | Customized according to project requirements |
| Low Voltage | Customized according to project requirements |
| Connection | Dyn11 / Yyn0 / Customized |
| Cooling Method | ONAN — Oil Natural Air Natural |
| Insulating Medium | Mineral Transformer Oil / Eco-Friendly Insulating Fluid |
| Winding Material | Copper / Aluminum |
| Tap Changer | Off-Circuit Tap Changer (OCTC) |
| Tap Range | ±2 × 2.5% / ±5% / Customized |
| Impedance Voltage | Typically 4%–6%, Customized |
| No-Load Loss | According to applicable standard and design |
| Load Loss | According to applicable standard and design |
| Insulation Level | According to rated voltage and applicable standard |
| High Voltage Protection | Fuse / Load Break Switch / Customized |
| Surge Protection | Surge Arrester, Optional |
| Enclosure | Outdoor Steel Cabinet |
| Enclosure Protection | Weather Resistant / Customized |
| Installation | Outdoor Pad Mounted |
| Ambient Temperature | Typically -25°C to +40°C |
| Altitude | ≤1000 m, higher altitude available |
| Winding Temperature Rise | According to applicable IEC / ANSI requirements |
| Insulation Class | Oil-Immersed Insulation System |
| Standards | IEC / ANSI / IEEE |
| Service Life | Designed for long-term continuous operation |
The 150kVA pad mounted transformer can be supplied with:
For EPC and utility projects, the following parameters can be customized:
Voltage · Frequency · Vector Group · Impedance · Tap Range · Winding Material · Protection · Enclosure · Insulating Fluid · Accessories · Paint System
Final electrical parameters should be confirmed according to the project specification, local grid requirements, and applicable IEC/ANSI/IEEE standards.
The 150kVA Three Phase Pad Mounted Transformer can be customized to meet different grid conditions, installation environments, and project requirements.
Custom transformer designs are available for utility, renewable energy, industrial, commercial, and EPC projects.
To ensure safe delivery during international transportation, each 150kVA Three Phase Pad Mounted Transformer is carefully inspected, protected, and packed according to export standards.
Before shipment, the transformer will be prepared with:
The transformer is delivered with complete technical documents, including:
We provide reliable logistics support for overseas projects, including:
Each transformer is carefully handled from factory to project site to ensure it arrives in excellent condition and is ready for installation.
To ensure safe delivery during international transportation, each 150kVA Three Phase Pad Mounted Transformer is carefully inspected, protected, and packed according to export standards.
Before shipment, the transformer will be prepared with:
The transformer is delivered with complete technical documents, including:
We provide reliable logistics support for overseas projects, including:
Each transformer is carefully handled from factory to project site to ensure it arrives in excellent condition and is ready for installation.
Every 150kVA Three Phase Pad Mounted Transformer undergoes complete routine testing before delivery to ensure electrical performance, safety, and long-term reliability.
Routine tests are carried out according to applicable IEC, ANSI, IEEE standards and customer technical requirements.
The resistance of each transformer winding is measured to verify conductor quality, winding connections, and manufacturing consistency.
Checks the transformation ratio, tap position accuracy, and phase relationship to ensure correct voltage conversion.
Measures core losses and excitation current to confirm the efficiency and magnetic performance of the transformer.
Verifies load performance, impedance values, and energy loss characteristics under rated operating conditions.
Evaluates the insulation condition between windings, core, and ground to ensure safe electrical operation.
Includes applied voltage and induced voltage tests to verify the insulation system can withstand electrical stress.
Checks the transformer tank, seals, and accessories to ensure excellent oil-tightness and prevent leakage during operation.
A complete inspection is performed on:
Each transformer can be supplied with complete test records, including:
Strict routine testing ensures that every 150kVA Three Phase Pad Mounted Transformer delivered from our factory meets project specifications and provides safe, stable, and reliable power distribution performance.
The 150kVA Three Phase Pad Mounted Transformer is widely used in medium-voltage distribution systems where reliable, safe, and efficient power supply is required. Its compact design, outdoor installation capability, and flexible configuration make it suitable for various utility, commercial, industrial, and renewable energy applications.
The transformer is commonly used in clean energy projects to connect distributed power generation systems with medium-voltage grids.
Applications include:
It provides stable voltage conversion and reliable power transmission between renewable energy sources and the electrical grid.
Designed for modern underground distribution systems, the pad mounted transformer is widely installed by utilities for safe and efficient electricity distribution.
Typical applications include:
The enclosed cabinet design improves safety and reduces maintenance requirements in public areas.
The 150kVA pad mounted transformer provides dependable power supply for commercial facilities requiring continuous and stable electricity.
Suitable for:
The transformer is designed to support industrial operations with reliable medium-voltage power distribution.
Common applications include:
It supports industrial equipment, production lines, and auxiliary electrical systems.
The compact outdoor design makes it suitable for various infrastructure developments.
Applications include:
For facilities requiring high power reliability, the transformer can be integrated into medium-voltage distribution systems for:
With customizable protection and monitoring options, it helps ensure stable power operation for important electrical loads.
The 150kVA Three Phase Pad Mounted Transformer provides a reliable and flexible power distribution solution for utilities, EPC projects, renewable energy systems, commercial buildings, and industrial applications worldwide.
A 150kVA Three Phase Pad Mounted Transformer is an outdoor distribution transformer installed on a concrete pad. It converts medium-voltage electricity into low-voltage power for residential, commercial, industrial, utility, and renewable energy applications.
The primary and secondary voltages can be customized according to the local grid and project requirements. Common configurations include 11kV/0.4kV, 13.8kV/0.48kV, 15kV/0.415kV, 20kV/0.4kV, and 35kV/0.4kV.
Yes. We can customize the voltage, frequency, vector group, impedance, winding material, tap range, protection devices, enclosure, insulating fluid, and accessories according to project specifications.
Yes. The transformer is specifically designed for outdoor use. Its steel enclosure provides protection against rain, dust, humidity, and other environmental conditions.
The standard configuration uses ONAN (Oil Natural Air Natural) cooling. Other cooling or insulating fluid options can be discussed for special applications.
Both copper and aluminum windings are available. The selection can be based on project requirements, electrical performance, and budget.
Optional protection equipment includes high-voltage fuses, load break switches, surge arresters, low-voltage circuit breakers, pressure relief devices, oil level indicators, temperature indicators, and monitoring systems.
The transformer can be manufactured according to IEC, ANSI, IEEE, and customer-specific technical standards, depending on the destination market and project requirements.
Routine factory tests include winding resistance, voltage ratio, no-load loss, load loss, impedance voltage, insulation resistance, applied voltage, induced voltage, oil leakage, and visual inspection.
Additional FAT and type tests can be arranged for EPC and utility projects.
Yes. FAT can be arranged before shipment according to the customer's inspection plan. Test reports and other quality documentation can be provided with the transformer.
Yes. We support EPC projects with customized technical specifications, drawings, datasheets, factory testing, quality documents, export packing, and international delivery support.
For an accurate quotation, please provide:
Our engineering team can then recommend the appropriate configuration and provide a project-specific quotation.
150kVA Three Phase Pad Mounted Transformer