Explore our core selection of heavy-duty, high-efficiency transformers designed for continuous operation and grid isolation.
Perth, as the primary industrial hub of Western Australia (WA), operates within one of the most demanding environmental and electrical ecosystems in the world. The combination of resource-rich remote mining regions like the Pilbara, heavy maritime hubs in Henderson, and localized high-density data infrastructures in the Perth CBD puts immense stress on electricity grids. Transformers deployed in these zones must handle extreme high-ambient temperatures (frequently exceeding 45°C), high relative humidity, coastal salinity, and corrosive dust environments characteristic of iron ore and bauxite operations.
Traditional oil-immersed transformers present environmental and fire safety hazards in close-quarters operations such as underground mining, offshore platforms, and commercial high-rises. Hence, Vacuum Pressure Impregnated (VPI) Dry-Type Isolation Transformers have become the gold standard. They provide structural safety, high dielectric strength, and prevent catastrophic thermal runaways without the risk of oil leakage.
At Henan Pirooz Power Co., Ltd., we export tailored distribution units that are compliant with Australian Standards (AS/NZS 60076 series), offering regional grid compatibility, structural resilience, and long service life. Whether powering dynamic port loaders in Fremantle or isolating sensitive digital circuits in Malaga, our engineering aligns with localized industrial expectations.
A comparative look at how VPI outpaces conventional insulation methods in harsh commercial and industrial environments.
The vacuum chamber process removes trapped air pockets within the transformer windings, preventing partial discharge issues. High-voltage resins deeply penetrate the coils, guaranteeing consistent insulation values up to 35kV class systems.
Unlike cast resin transformers that are prone to cracking under high-amplitude thermal shocks, VPI open-ventilated transformers flex thermally. This makes them highly reliable in cyclic load situations typical of heavy cranes and mineral processing.
Moisture-resistant varnishes protect active cores from high humidity and airborne particulate contamination. Designed specifically to run reliably in the dusty conditions of Pilbara and high-salinity marine applications in Henderson.
Our VPI Dry-Type and Oil-Immersed models comply with the stringent design criteria of Australian utility networks.
| Parameter / Metric | VPI Dry-Type series (30kVA - 5MVA) | Oil-Immersed series (100kVA - 20MVA) | Isolation / Rectifier series |
|---|---|---|---|
| Standard Voltage Inputs | 11kV, 22kV, 33kV, 35kV (Customizable) | 11kV, 22kV, 33kV, 35kVA, 66kV | Up to 33kV input with split secondary phases |
| Secondary / Output Volts | 380V, 400V, 415V, 480V, 690V | 400V, 415V, 3.3kV, 6.6kV, 11kV | Customized low-voltage and multi-tap outputs |
| Insulation Class | Class H (180°C) or Class F (155°C) | Class A (Liquid-immersed insulation) | Class H high-temperature barrier limits |
| Cooling Configurations | AN (Air Natural) / AF (Air Forced) | ONAN (Oil Natural) / ONAF (Oil Forced) | AN/AF with integrated thermal monitoring |
| Vector Groups | Dyn11, Yyn0, Dd0, Custom configurations | Dyn11, Yyn0, Ynd11 | Multi-pulse phases (6, 12, 18, 24-pulse) |
| Local Standard Alignment | AS/NZS 60076.11, AS 60529 (IP Ratings) | AS/NZS 60076.1, AS 2421 | AS/NZS 60076, IEEE C57.18.10 |
Take an inside look at Henan Pirooz Power's cutting-edge production workshops where high-performance isolation transformers are crafted.
The global transition to green energy and microgrids requires highly specialized isolation gear. In Western Australia, regional grids are evolving. Distributed energy resources (DER), solar PV arrays, wind farms, and battery storage systems (BESS) require robust transformers to handle high-frequency harmonics and protect fragile control electronics.
Whether you operate in the Henderson marine shipyards or manage remote mining substations, our VPI transformers can prevent circulating currents and limit systemic fault damage. We address issues common to older grids by optimizing core materials, reducing eddy current losses, and including electrostatic shields.
By combining modern design with durable manufacturing, Henan Pirooz Power Co., Ltd. provides reliable power infrastructure across Australia, Southeast Asia, Europe, and America.
A trusted global manufacturer of electrical power transmission and distribution equipment.
Henan Pirooz Power Co., Ltd. is a comprehensive electrical power equipment manufacturer integrating research and development, engineering design, production, sales, and after-sales service. The company specializes in customized solutions for power transformers and complete sets of transmission and distribution equipment, providing reliable and efficient electrical products for global energy infrastructure projects.
The company operates a modern manufacturing facility with a complete production system covering product design, precision machining, assembly, and full electrical testing. Equipped with advanced production lines and strict quality control procedures, Henan Pirooz Power Co., Ltd. ensures that all products meet international standards and customer-specific technical requirements, maintaining high performance, safety, and durability.
Its core product range includes 10kV–35kV oil-immersed power transformers (such as S11, S13, S14, and S20 series), dry-type transformers (including SCB10, SCB11, SCB13, and SCBH15 series), as well as on-load tap-changing transformers, rectifier transformers, and furnace transformers designed for specialized industrial applications. These products are widely used in power utilities and heavy industries requiring stable and efficient energy distribution.
In addition to transformers, the company also provides complete electrical system solutions, including high and low voltage switchgear, European-style compact substations, American-style pad-mounted substations, and underground distribution substations. These integrated solutions are widely applied in power grid construction, industrial manufacturing, mining, metallurgy, petrochemicals, transportation systems, and renewable energy projects.
With a growing international footprint, Henan Pirooz Power Co., Ltd. has exported its products to multiple countries and regions worldwide, building long-term partnerships across global energy markets. The company continues to expand its production capacity and technological capabilities to meet increasing international demand.
Looking ahead, the company is committed to innovation, energy efficiency, and smart manufacturing development. By continuously improving product performance and system integration capabilities, Henan Pirooz Power Co., Ltd. aims to become a globally recognized provider of advanced power equipment solutions, supporting the development of modern and sustainable energy infrastructure.
Review our broader range of VPI equipment, rectifiers, control units, and high-frequency isolation components.
Direct answers from our engineering team on selection, standards, and environmental suitability.
VPI (Vacuum Pressure Impregnation) dry-type transformers feature an open-wound design using high-temperature class H or F varnishes. This ensures excellent thermal flex, mechanical stability, and high moisture resistance without the risk of micro-cracking under sudden load fluctuations or low temperatures. In contrast, Cast Resin (CRT) transformers seal the coils completely in solid epoxy resin, which is highly protective but can crack under sudden thermal cycles or extreme vibrations common in heavy industries like mining.
Yes. All transformers exported to Australia are designed and tested according to AS/NZS 60076 (Power Transformers). We customize electrical ratings, connection vectors (such as Dyn11), and enclosures (including custom IP ratings) to comply with local utility grid requirements and Western Australian industry standards.
Isolation transformers isolate primary and secondary windings to stop ground loops, protect equipment from high-frequency harmonics, and filter electrical noise. In Perth’s mining operations (such as in the Pilbara) and marine berths, isolation transformers protect automated control systems and VFD units from electrical faults caused by lightning strikes or grid switching.
VPI dry-type transformers require very little maintenance because they don't use cooling oil that needs regular testing. Maintenance simply involves regular visual inspections, vacuuming accumulated dust from the ventilation channels, checking electrical connections for correct torque, and monitoring temperature controller logs to ensure peak performance.
Consult with our engineering team today. We design, manufacture, and test custom VPI and oil-immersed transformers to meet your specific application requirements.
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