Custom OEM manufacturing according to PN-EN 60076, IEC 60076, and EU 2019/1783 standards. Sized and rated for seamless integration into Polish transmission networks (PGE, TAURON, Enea, Energa, PSE S.A.).
Poland's power generation paradigm is undergoing an unprecedented structural transition. Under the official Poland’s Energy Policy until 2040 (PEP2040) and alignment with the European Union's Fit-for-55 decarbonization mandates, the Polish national grid is rapidly evolving from centralized coal-fired baseload plants toward distributed renewable energy systems (RES). With installed solar photovoltaic (PV) capacity surpassing 18 GW and significant onshore and offshore Baltic Sea wind park expansion, the demand for robust, highly efficient step-up power transformers has reached a critical historic peak.
In renewable energy plants and industrial generation facilities, step-up power transformers perform the crucial technical function of stepping up generation voltages (typically 0.4 kV, 0.69 kV, 0.8 kV, or 1.1 kV output from solar inverters, wind turbines, or industrial gas turbines) up to distribution and transmission grid levels—namely 15 kV, 20 kV, 30 kV, 33 kV, or 110 kV. Because Polish Distribution System Operators (DSOs)—including PGE Dystrybucja, TAURON Dystrybucja, Enea, Energa, and transmission operator PSE S.A.—enforce strict power quality, harmonic distortion (THD), and loss threshold limits, procuring generic off-the-shelf transformers often leads to premature thermal insulation breakdown, resonance issues, or regulatory non-compliance.
All power and distribution transformers exported to Poland and the broader European Economic Area (EEA) must strictly comply with the mandatory Commission Regulation (EU) 2019/1783 (amending Regulation No 548/2014), commonly known as EcoDesign Tier 2. This directive dictates maximum allowable no-load losses ($A_0$) and load losses ($B_k$) for medium and large power transformers.
As a specialized OEM exporter, our power transformers engineered for Polish projects incorporate laser-scribed, high-permeability Grain-Oriented Silicon Steel (CRGO) stacked with 45° step-lap miter joints. This precision engineering reduces hysteresis and eddy current losses, ensuring full compliance with PN-EN 60076 standards while minimizing lifetime total cost of ownership (TCO) for Polish EPC contractors and asset owners.
Every utility grid section in Poland presents distinct localized parameters—ranging from varying short-circuit capacity levels in industrial Silesia to sub-zero continental winter ambient temperatures (-25°C to -30°C) in eastern Poland (Lublin, Podlaskie). Custom OEM customization is not merely an option; it is an engineering necessity.
Utilizing continuous electrolytic copper or aluminum foil for low-voltage windings removes axial short-circuit displacement forces. This ensures exceptional mechanical withstand capability during grid through-faults, extending service life in networks experiencing frequent switching surges.
Engineered with step-lap CRGO core cutting technology that drastically cuts magnetic flux leakage. Guaranteed no-load loss ($P_0$) and load loss ($P_k$) metrics are fully validated during routine factory acceptance testing (FAT) prior to shipment clearance.
Formulated with premium-grade mineral electrical oils (inhibited to IEC 60296) or high-flashpoint synthetic esters (IEC 61099), paired with cold-weather gasket materials (viton/fluorosilicone) rated for harsh Polish winter climates without oil embrittlement or seal failure.
Options for integrated On-Load Tap Changers (OLTC) with automatic voltage regulation (AVR), fiber-optic winding temperature probes, online Dissolved Gas Analysis (DGA), and IEC 61850 protocol compliance for seamless connection to Polish DSO SCADA systems.
To provide clear technical transparency for procurement auditors and consulting engineers, the structural advantages of custom foil-wound step-up transformers are evaluated below:
| Performance Parameter | Standard Wire-Wound Transformer | Custom OEM Foil-Wound Step-Up Transformer | Engineering Benefit for Polish Grids |
|---|---|---|---|
| Axial Short-Circuit Force | High concentration at layer crossovers | Uniform distribution across entire coil length | Prevents mechanical collapse during grid faults |
| Hot-Spot Temperature Rise | Uneven heat distribution, localized hot-spots | Optimal heat dissipation via continuous metal surface | Extends paper insulation (Kraft/Nomex) operating lifespan |
| Harmonic K-Factor Capacity | Requires significant rating derating (15-30%) | Custom K-13 / K-20 rated without thermal overload | Handles direct inverter output (PV/BESS/Wind) |
| Partial Discharge Level | Typically < 50 pC (Dry-type) | Ultra-low < 10 pC (Cast Resin SCB Series) | Eliminates internal insulation degradation risks |
| EU EcoDesign Compliance | Legacy Tier 1 or basic compliance | Full Tier 2 ($A_0-10\%, B_k$) guaranteed values | Mandatory requirement for installation within the EU |
Our custom step-up and isolation transformers are engineered to operate reliably across the diverse geographical and environmental conditions found across Poland's voivodeships:
Multi-winding step-up transformers (0.8kV/1.1kV to 20kV/30kV) custom-built to step up power from central/string solar inverters, featuring dual LV inputs and electrostatic shields to isolate inverter high-frequency noise from the regional Enea/Energa medium-voltage feeder grid.
Heavy-duty ONAN/ONAF step-up transformers with ISO 12944 C5-M high-durability marine anti-corrosion coating. Designed to handle severe salt-spray environments and high humidity associated with coastal wind turbine collector substations near the Baltic Sea.
High-current furnace and heavy industrial step-up transformers built to supply induction melting furnaces and rolling mills in Katowice, Gliwice, and Kraków. Reinforced core clamping prevents mechanical resonance under repetitive cyclic thermal shock.
Cast Resin Dry-Type SCB Series step-up/step-down transformers installed indoors within urban commercial zones. Certified F1 (Fire Risk) and C2/E2 (Environmental/Climatic), providing self-extinguishing flame retardancy with zero oil hazard.
Standardized 11kV, 15kV, 20kV, and 33kV primary power transformers equipped with low-noise fan assemblies and compact footprints, enabling turnkey replacement of aging post-Soviet infrastructure in urban sub-distribution centers.
Heavy-duty traction step-up transformers and compact secondary substations (CSS) designed for high reliability, supplying continuous auxiliary power to modern electrified transit corridors, logistics centers, and railway feeder lines.
As a leading international transformer manufacturer established in 2004, our manufacturing plant operates under a fully integrated ISO 9001, ISO 14001, and ISO 45001 Quality Management System. We bring decades of specialized engineering experience to overseas EPC contractors and utility procurement officers.
Featuring in-house core slitting, automated foil/wire winding bays, specialized vacuum drying ovens, tank fabrication, and automated shot-blasting & painting booths. Total control over every manufacturing stage guarantees defect-free assembly.
Our dedicated engineering department generates customized General Arrangement (GA) drawings, schematic wiring diagrams, and Guaranteed Technical Particulars (GTP) within 48-72 hours for client approval before production release.
Every single unit undergoes mandatory routine tests: Winding Resistance, Voltage Ratio & Vector Group, No-Load Loss & Current, Load Loss & Impedance, Insulation Resistance, and Applied Voltage / Separate-Source Withstand Tests with complete FAT reports issued.
Units are secured inside heavy-duty, moisture-sealed wooden crates or nitrogen-filled tank transport setups. Seamless freight forwarding to major Polish entry points including the Port of Gdynia, Port of Gdańsk, or overland road transport across Europe.
The following reference matrix outlines the default manufacturing parameters for custom step-up transformers destined for utility and industrial projects in Poland:
| Transformer Type | Rated Capacity | Primary / Secondary Voltage | Cooling Mode | Applicable Standards | Key Features |
|---|---|---|---|---|---|
| Oil-Immersed Step Up | 500 kVA – 35 MVA | 0.4kV / 0.69kV / 1.1kV → 15kV / 20kV / 33kV / 69kV | ONAN / ONAF | PN-EN 60076, IEC 60076, EU 2019/1783 | Hermetically sealed or conservator, OLTC/OCTC, low loss core |
| Cast Resin Dry-Type | 100 kVA – 5 MVA | 0.4kV → 10kV / 15kV / 20kV / 33kV | AN / AF (IP00 to IP31) | IEC 60076-11, EN 50588-1, CE | F1 Fireproof, low partial discharge (<10pC), indoor safe |
| Solar Inverter Duty Step Up | 1000 kVA – 7.5 MVA | 0.69kV / 0.8kV / 1.1kV (Dual/Quad LV) → 20kV / 30kV / 33kV | ONAN | IS 2026, IEC 60076, PN-EN 60076 | Multi-winding, K-13 rated, electrostatic shield, harmonic resistant |
| Dry Type Isolation | 15 kVA – 630 kVA | 220V / 380V / 400V / 415V / 480V Isolation | AN / Forced Air | IEC 61558-2-4, CE Marked | 100% Copper foil, galvanic noise isolation, Class H 180°C |
| Compact Substation (CSS) | 250 kVA – 3150 kVA | 11kV / 15kV / 20kV / 33kV Kiosk | ONAN / Dry-Type | IEC 62271-202, PN-EN 62271-202 | Integrates VCB/RMU switchgear, transformer, & LV distribution |
Send us your project technical specification sheet, single-line diagram (SLD), or required transformer rating. Our technical sales engineering team will deliver a comprehensive technical proposal and competitive quotation within 24 hours.
