Explore our premium grade utility-scale and industrial transformers engineered for extreme reliability and peak electrical performance.
In modern industrial and utility systems, power distribution is no longer a simple step-down function. Today's global enterprises demand grid infrastructure that is energy-efficient, highly customized, and resilient against extreme thermal, seismic, and electrical conditions. As a leading manufacturer and exporter, Henan Pirooz Power Co., Ltd. delivers advanced electrical solutions engineered to address these complex needs.
International procurement departments face strict requirements when sourcing medium to high-voltage equipment. The primary challenge is balancing initial capital expenditure (CAPEX) with long-term operational costs (OPEX), which are heavily influenced by core losses (no-load losses) and winding losses (load losses). Modern grid mandates such as the EU Eco-design directives, US DOE standards, and China's high-efficiency national guidelines require transition to high-efficiency cores.
Additionally, the rapid expansion of hyperscale data centers, utility-grade solar and wind farms, and heavy industrial automation places unique stresses on power grids. These installations require power equipment capable of handling high harmonic currents and frequent load switching without degrading insulation life. Our OEM capabilities allow us to construct transformers with electrostatic shields, K-factor ratings, and enhanced cooling schemes to mitigate these thermal stresses.
Technical Insight: Silicon steel versus Amorphous alloy cores. Standard silicon steel (S11, S13 series) provides reliable service at a lower acquisition cost. Amorphous alloy cores (SCBH15, SCBH19 series) reduce no-load losses by up to 70% to 80% compared to traditional steel cores, making them the preferred technology for green energy installations and high-efficiency commercial facilities.
Different industrial landscapes require distinct engineering designs. At Henan Pirooz Power Co., Ltd., we categorize our solutions based on environmental and grid conditions:
| Transformer Type | Voltage Range | Capacity Range | Primary Cooling | Ideal Application |
|---|---|---|---|---|
| Oil-Immersed Distribution (S11/S13/S20) | 6kV - 35kV | 30kVA - 5000kVA | ONAN / ONAF | Utility Grids, Industrial Sub-Stations, Heavy Mining |
| Cast Resin Dry-Type (SCB10/11/13) | 6kV - 11kV | 100kVA - 4000kVA | AN / AF | High-rise Buildings, Data Centers, Underground Substations |
| Amorphous Alloy Dry-Type (SCBH15) | 6kV - 11kV | 30kVA - 4000kVA | AN / AF | Eco-Friendly Projects, Municipal Power, Smart Grids |
| Pad-Mounted CSS Substation (American/European) | 6kV - 35kV | 630kVA - 5000kVA | ONAN (Internal) | Urban Distribution, Commercial Parks, Renewable Fields |
Henan Pirooz Power Co., Ltd. manages a complete production cycle, utilizing automated systems to maintain tolerances and ensure structural and electrical integrity.
The distribution transformer is transitioning from a passive grid node into an active, intelligent asset. Our engineering team at Henan Pirooz Power Co., Ltd. is focused on three main pillars for future product designs:
Integrating fiber-optic temperature sensors inside winding structures to monitor hot-spot temperatures in real-time, coupled with gas-in-oil analyzers (DGA) for remote predictive maintenance.
Developing transformers that utilize biodegradable synthetic or natural esters instead of traditional mineral oils, reducing environmental risks in water protection areas and urban centers.
Integrating smart vacuum circuit breakers and microgrid controllers directly into compact substations to handle bidirectional power flows from distributed energy resources (DERs).
Exporting electrical equipment requires adherence to local utility rules and international standards. Henan Pirooz Power Co., Ltd. manufactures products in accordance with global benchmarks, including: IEC 60076 (International Electrotechnical Commission), IEEE C57 / ANSI (North America), GB/T standards (China), and CE / UL certifications. Our testing labs verify key parameters on every unit before shipping: insulation resistance, voltage ratio, phase displacement, winding resistance, and no-load/load losses. Type tests, including temperature rise and lightning impulse tests, can be performed upon request to ensure reliable integration into existing national power grids.
Detailed technical answers to help simplify the procurement, installation, and operation of our power distribution products.
For regions with high ambient temperatures, we modify our thermal design by reducing the rated temperature rise limit of the copper windings. We utilize Class H insulation paper, expand the heat dissipation surface area of the radiators, and increase the volume of the oil conservator tank. These features prevent oil overflow and degradation of paper insulation, ensuring the transformer maintains its rated capacity without premature aging.
Oil-immersed transformers (such as the S11, S13, and S20) are cost-effective, offer high overload capacities, and are ideal for outdoor utility grids and heavy industries. Dry-type transformers (such as the SCB11 and SCBH15) do not use flammable dielectric fluids, making them suitable for indoor spaces, commercial properties, hospitals, and underground substations where fire hazard mitigation is critical.
Yes, we design and manufacture transformers to meet your specific local grid requirements. Whether you require a step-up transformer (e.g., 0.4kV to 10kV/35kV) or a distribution step-down transformer (e.g., 11kV/33kV to 220V/380V/440V), we customize the winding turn ratio, vector groups (such as Dyn11 or Yyn0), and tap changer systems (off-circuit or on-load tap changers) accordingly.
Every transformer undergoes routine factory testing in our quality testing facility. These tests include: measurement of winding resistance, voltage ratio checks, phase relationship measurements, short-circuit impedance and load loss tests, no-load loss and current measurements, and applied/induced voltage dielectric tests. We provide full test reports for each unit to support installation and commissioning.
Browse our selection of specialized industrial transformers, pad-mounted equipment, and high-efficiency dry-type models built to international specifications.
Pirooz Power
