Explore our CE certified range of single-phase, three-phase, dry-type, and oil-immersed transformers engineered for precision, high thermal tolerance, and optimal energy efficiency.
Engineered for global power grid stability, industrial transformation, and long-term operating efficiency.
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.
Understanding European Norm (EN) standards, Low Voltage Directive (LVD 2014/35/EU), and electromagnetic compatibility for industrial low voltage transformers.
Low voltage transformers intended for the European Economic Area must comply with EN 61558-1 (Safety of power transformers) and EN 60076 (Power transformers). Compliance mandates rigorous dielectric strength testing, insulation resistance evaluation under high ambient humidity, and short-circuit withstand withstand testing to prevent thermal runaway.
Henan Pirooz Power utilizes Class F (155°C) and Class H (180°C) insulation systems utilizing DuPont Nomex® paper and high-grade cast resin. This guarantees robust thermal endurance under heavy step-down cyclic loading, preventing dielectric breakdown even under transient voltage spikes and continuous industrial operation.
By incorporating cold-rolled grain-oriented silicon steel (CRGO) and cutting-edge amorphous metal ribbon cores, our low voltage distribution units drastically reduce hysteresis and eddy current losses ($P_0$), lowering operating costs across 25 to 30 years of continuous service life.
An inside look at our state-of-the-art facility: automated CNC sheet metal processing, robotic winding, vacuum pressure impregnation, and rigorous testing protocols.
Analyzing global grid expansion, industrial automation, data center power density, and renewable integration trends driving transformer procurement worldwide.
Solar PV farms and wind installations require specialized step-down and isolation low voltage transformers to convert medium voltage inverter outputs into regulated low voltage distribution grids. Zero-phase sequence isolation and high harmonic mitigation are mandatory.
The rapid rollout of DC Fast Charging (DCFC) hubs requires high-capacity low-voltage transformers (480V to 400V/230V) capable of delivering continuous high-current steps without thermal overload, driving robust demand for dry-type cast resin units.
Modern AI hyperscale data centers operate under ultra-dense power requirements. Custom low-voltage step-down transformers (600V/480V to 208V/120V) with K-factor ratings (K-13, K-20) are critical to handle non-linear server switch-mode power supplies without overheating.
Why procurement teams from Europe, North America, Southeast Asia, and the Middle East choose Henan Pirooz Power Co., Ltd. for OEM transformer manufacturing.
Located in Henan’s premier industrial power cluster, our facility benefits from immediate access to high-purity electrical copper, grain-oriented silicon steel coils, non-grain oriented core ribbons, and UL/CE certified insulating resins. This integration drastically reduces raw material lead times by up to 40% compared to Western manufacturers.
Through the integration of robotic mechanical arms, laser sheet cutting systems, automated coil-winding machines, and continuous spray painting lines, Henan Pirooz achieves extreme dimensional consistency and electrical symmetry. Manual assembly errors are eliminated, ensuring 100% compliance with strict CE dielectric tests.
Every transformer leaving our line undergoes comprehensive routine testing in accordance with IEC 60076 and CE norms: winding resistance measurement, voltage ratio checks, phase displacement verification, short-circuit impedance testing, no-load loss measurement, and high-voltage withstand insulation tests.
Whether projects demand IP20 indoor enclosures for commercial vaults or IP65 NEMA 4X outdoor stainless steel enclosures for corrosive chemical plants, our engineering design team delivers tailored mechanical layouts engineered for thermal dissipation and site-specific physical footprints.
Engineering breakdown to guide B2B procurement decisions based on environmental, operational, and electrical criteria.
| Parameter / Feature | Dry-Type Cast Resin (SCB Series) | Oil-Immersed Distribution (S11/S13/S20) | Amorphous Alloy Core (SCBH/SBH) |
|---|---|---|---|
| Voltage Class | Up to 35kV / 0.4kV Low Voltage | Up to 35kV / 0.4kV Low Voltage | 10kV / 0.4kV Low Voltage |
| Cooling Method | AN (Air Natural) / AF (Air Forced) | ONAN (Oil Natural Air Natural) | AN / ONAN Options |
| No-Load Loss ($P_0$) Efficiency | Standard Low Loss | High Efficiency Grade | Ultra-Low (70-80% Loss Reduction) |
| Fire Safety Rating | Self-extinguishing (F1 Rating) | Requires Oil Retention Basins | Self-extinguishing (Dry Type Variant) |
| Insulation Class | Class F (155°C) / Class H (180°C) | Class A (105°C Insulation Oil) | Class F / Class H |
| Maintenance Requirements | Virtually Maintenance-Free | Periodic Oil Dielectric Inspection | Minimal Inspection Needed |
| Typical Applications | High-rise Buildings, Data Centers, Subways | Outdoor Grids, Industrial Complexes | Green Buildings, Solar Power Grids |
Engineered low voltage distribution solutions adapted to extreme climatic and operational conditions worldwide.
In high-dust, heavy-vibration mining facilities, Henan Pirooz supplies reinforced furnace transformers and step-down isolation units with vibration-absorbent mounts, dust-proof IP54 enclosures, and enhanced short-circuit withstand capabilities.
For space-constrained urban real estate, European-style compact substations and American-style pad-mounted cabinets integrate the low-voltage transformer, high-voltage switchgear, and secondary distribution panels into a single weatherproof enclosure.
Single-phase pole-mounted overhead transformers (10kV to 33kV) deliver localized step-down power for agricultural and rural residential microgrids, designed with lightning surge arresters and corrosion-resistant tanks for long service life.
Comprehensive answers regarding CE compliance, custom engineering capabilities, shipping logistics, and performance specifications.
Our transformers are manufactured in strict compliance with CE directives (Low Voltage Directive 2014/35/EU and EMC Directive 2014/30/EU) and IEC 60076 standards. Complete routine test reports, type test certificates, and compliance documentation are provided with every shipment.
Yes. We custom design magnetic cores and winding turns ratios to support both 50Hz and 60Hz operational frequencies, as well as non-standard primary and secondary voltages ranging from 208V, 220V, 380V, 400V, 440V, 480V up to 600V.
Dry-type (SCB) transformers use vacuum-impregnated or cast epoxy resin insulation, making them ideal for indoor fire-safe applications. Amorphous alloy transformers utilize a non-crystalline metallic core ribbon that reduces no-load electrical losses by up to 70-80% compared to standard silicon steel cores.
We engineer cooling ducts directly within the winding coils to optimize Natural Air (AN) or Forced Air (AF) circulation. For oil-immersed models (S11-S20), corrugated tank radiators maximize surface heat dissipation under continuous heavy load conditions.
Standard low-voltage units are delivered within 15 to 20 days. High-capacity custom dry-type or oil-immersed substations typically require 25 to 35 days, including complete factory acceptance testing (FAT) prior to export packaging.
We supply enclosures with ingress ratings from IP20 (standard indoor) up to IP65 / NEMA 4X (outdoor heavy weatherproof/corrosive protection). Enclosure materials include powder-coated cold-rolled steel, galvanized steel, and 304/316 marine-grade stainless steel.
Browse our expanded lineup of potential transformers, pad-mounted substations, VPI dry units, and high-voltage isolation equipment.
Pirooz Power