Engineered for high thermal tolerance, low no-load losses, and severe climate resilience in global installations.
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.
Our 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.
Comprehensive comparison of oil-immersed, dry-type, and amorphous alloy cores under IEEE and IEC validation procedures.
| Transformer Category | Typical Rated Capacity (kVA) | Primary Voltage Class (kV) | Vector Groups | Insulation Class | No-Load Loss Reduction (vs. Base) |
|---|---|---|---|---|---|
| Oil-Immersed Distribution (S11/S13/S20) | 30 - 2500 kVA | 10 / 15 / 20 / 35 kV | Dyn11 / Yyn0 | Class A (105°C) | Up to 30% reduction (S20 series) |
| Dry-Type Cast Resin (SCB10/11/13/18) | 100 - 3150 kVA | 10 / 20 / 35 kV | Dyn11 / Yyn0 | Class F (155°C) / Class H (180°C) | Optimal flame-retardant performance |
| Amorphous Alloy Core (SH15 / SCBH15) | 50 - 2500 kVA | 10 / 22 / 33 kV | Dyn11 | Class A / F / H customizable | 70% - 80% decrease in idle energy loss |
| Pad-Mounted Substation (ZGS11) | 100 - 1600 kVA | 10 / 35 kV | Dyn11 / Yyn0 | Mineral Oil / Ester Fluid (FR3) | Compact design integrated protection |
From raw steel slitting to robotic structural assembly, step inside our ISO-certified production floor.
How localized manufacturing, raw material integrations, and engineering scale produce highly cost-efficient grids.
China produces the majority of the world's cold-rolled grain-oriented (CRGO) silicon steel. Henan Pirooz Power secures high-permeability, low-hysteresis core sheets direct from tier-one steel refineries, minimizing materials markups and optimizing no-load losses.
By hosting a fully-integrated vacuum pressure impregnation (VPI) facility, we execute precise varnish coatings on high-capacity coils under strict pressure metrics, guaranteeing bubble-free resin flow and optimal dialectic safety parameters.
Our strategic inland transportation links and ports integration enable swift transport of heavy loads. Specialized sea containers and break-bulk configurations handle high tonnage step-up transformers and compact American-type substations directly to project sites globally.
Purchasing directly from specialized Chinese wholesale manufacturers like Henan Pirooz Power Co., Ltd. eliminates intermediate distribution fees, allowing developers to allocate budgets directly to premium windings and digital monitoring packages. Our in-house research facilities constantly integrate local structural enhancements such as advanced laser-cut steel lamination stacks, which drastically reduce eddy current leakage compared to traditional manual slitting methods.
Designing customized units matching unique grid requirements, seismic limits, and environmental parameters.
Deploying transformers globally demands a deep, professional understanding of local standards. Equipment designed for European distribution grids under EU Ecodesign directives requires vastly different loss limits than pole-mounted transformers installed on cooperative grids throughout North America under ANSI/IEEE C57.12.20 rules.
Henan Pirooz Power customizes every element of our production based on destination requirements:
Designed for the Americas. Focuses on copper windings, radial/loop feed systems for pad-mounted substations, standard bay-o-net fuses, and backup current-limiting fuses to guarantee local utility requirements are exceeded.
Followed throughout Europe, the Middle East, and Asia. Strict specifications for insulation levels, vector alignments (typically Dyn11 or Yyn0), standard oil expansions, and low-loss metrics.
Designed for regions with high ambient heat (Middle East, Class A/F oil cooling combinations), marine deployments (C5-M high-durability paint coats), or high seismic zones (reinforced mechanical frames).
Every transformer leaves our ISO 9001 facility with comprehensive quality documentation, covering routine tests like winding resistance checks, insulation resistance tests, voltage ratio measurements, vector relationship tests, and full no-load/load loss tests. Type testing certificates and short-circuit test reports are also available upon request to assist with local grid connection processes.
Key shifts impacting modern grid infrastructure, including renewable integration and eco-friendly designs.
The global energy landscape is transitioning from fossil-fuel baseline power generation to decentralized renewable sources. This evolution places unique stresses on transmission and distribution systems. As a leading manufacturer, Henan Pirooz Power Co., Ltd. continues to innovate in key areas:
Answers to common engineering and procurement questions about international compliance, custom specifications, and site installations.
High-voltage isolation transformers, vacuum processing machinery, and heavy industrial power systems.
Pirooz Power
