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.
Through our dedicated R&D team, we focus on engineering CE Certified single-phase distribution transformers and multi-phase substations optimized for energy conservation, minimal core loss, and high thermal stability under varying utility demands.
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.
Single-phase transformers are foundational elements in localized power distribution systems. Unlike three-phase setups, which dominate industrial high-power grids, single-phase architectures step down medium-voltage (MV) lines to consumer-level low-voltage (LV) circuits. This transition is essential for residential grids, municipal lighting networks, and rural electrification initiatives.
The efficiency of a single-phase transformer depends on the quality of its magnetic core. At Henan Pirooz Power, we utilize high-permeability, grain-oriented silicon steel sheets (CRGO). These sheets are precision-cut at specific angles to align the magnetic domains, reducing hysteresis and eddy current losses. For specialized low-loss requirements, we integrate amorphous alloy cores, which lower no-load losses by up to 70% compared to traditional silicon steel designs.
We provide tailormade winding designs using high-conductivity materials:
| Parameters | Standard Single-Phase Core Type | Amorphous Alloy Single-Phase Core | Pole-Mounted Distribution Type |
|---|---|---|---|
| Capacity Range | 5 kVA - 167 kVA | 10 kVA - 100 kVA | 10 kVA - 333 kVA |
| Primary Voltage | Up to 35 kV | Up to 22 kV | 11 kV, 22 kV, 33 kV |
| Secondary Voltage | 120/240V, 220/230V, 240/480V | 120/240V, 220/440V | 220V, 230V, 240V |
| No-Load Loss reduction | Baseline Standard | Up to 70% reduction | Baseline Standard |
| Standard compliance | IEC 60076 / IEEE C57.12 | IEC 60076 / CE Certified | IEC 60076 / ANSI / CE |
We leverage laser cutters, dynamic robotic bending machines, and automated vacuum encapsulation chambers. This guarantees exact tolerances, clean assemblies, and reduces manual error to near-zero levels.
Our onsite testing labs perform routing and type tests, including voltage ratio, polarity, phase displacement, winding resistance, and no-load/load loss tests, as well as full dielectric strength evaluations.
Our single-phase and three-phase transformers are fully CE and IEC certified, satisfying European Union safety directives, environmental standards, and international utility regulations.
In low-density areas, running three-phase transmission lines is cost-prohibitive. Single-phase pole-mounted transformers are the optimal solution. Spliced directly onto single-phase MV feed lines, they step down voltage to standard residential values (e.g., 240V or split-phase 120/240V) to power farms, pumps, and localized domestic grids safely and reliably.
Modern cities require intelligent distribution systems. By integrating advanced monitoring modules into our pad-mounted and dry-type transformers, we enable real-time tracking of loading patterns, thermal states, and current leakage. This data feeds directly into SCADA systems, preventing overloads and reducing outage times.
For sensitive manufacturing sectors, isolating critical machinery from high-voltage fluctuations is crucial. Our heavy-duty single-phase and three-phase isolation transformers shield automation lines and precision components from electrical noise, harmonics, and sudden surge spikes.
Distributed solar farms and small wind turbines generate electricity at varying voltages. Our step-up transformers connect these remote clean energy sources back to the local utility grid efficiently, supporting green power transitions.
Take a look inside the modern facility of Henan Pirooz Power Co., Ltd. From automated metal cutting to finished product testing, our quality control covers every step.
Purchasing heavy-duty electrical equipment involves evaluating several crucial technical parameters to ensure safety, grid compatibility, and long-term cost efficiency.
Ensure the manufacturer designs the equipment to comply with your region's grid requirements (e.g., ANSI/IEEE for North America, IEC standards for Europe and Asia). At Pirooz Power, our engineering team customizes winding configurations and terminal positions to fit local distribution requirements.
The purchase price of a transformer represents only a fraction of its lifetime cost. The remaining expense comes from energy losses over decades of continuous operation. Selecting high-efficiency transformers, such as our S13, S20, or amorphous alloy core models, reduces these losses, yielding significant savings over time.
The installation environment dictates the cooling and insulation method:
CE certification confirms that the transformer meets all health, safety, and environmental protection requirements set by the European Union. This ensures the equipment can be legally imported, distributed, and operated within the EU and other regions recognizing CE standards.
With proper maintenance and operating within standard thermal limits, our oil-immersed transformers have a design life exceeding 30 years. Dry-type transformers typically last 20 to 25 years under recommended indoor conditions.
Yes. Our engineering division designs customized high-voltage and medium-voltage configurations (such as 11kV, 22kV, 33kV) to match specific secondary voltage distributions (110V, 120V, 220V, 240V, or 480V) for unique industrial and international applications.
Pad-mounted transformers sit on concrete ground pads, featuring locked, tamper-resistant cabinets for safe installation in public areas. Pole-mounted transformers are cylindrical units designed for overhead installation on utility poles in rural and suburban aerial distribution lines.
We support ONAN (Oil Natural Air Natural) cooling as standard. For higher-capacity applications, we can add forced-air fans to support ONAF (Oil Natural Air Forced) cooling, increasing overload capacity under peak demand.
Pirooz Power
