69kV 33kV 10MVA-30MVA ONAN Copper Oil Immersed Power Transformer
Heavy-duty substation step-down transformer built with high-grade electrolytic copper windings and low-loss CRGO steel core.
Engineered to IEC 60076, EN 50588-1, and ESB Networks interoperability guidelines for deployment across Ireland and Europe.
Heavy-duty substation step-down transformer built with high-grade electrolytic copper windings and low-loss CRGO steel core.
Flame-retardant, self-extinguishing F1/E2/C2 rated dry-type transformer optimized for indoor substations, hospitals, and hyperscale data centers.
Precision epoxy cast resin isolation transformer featuring galvanic isolation, surge mitigation, and CE marking for industrial control.
Ultra-low no-load loss design tailored to European EcoDesign Tier 2 limits. Perfect for local MV grid steps in commercial complexes.
Compact step-down unit featuring continuous foil-wound coils and thermal overload sensors for critical data facility power loops.
Compact distribution unit configured for 20kV primary distribution rings commonly found in regional European utility networks.
Low-noise, medical-grade isolation transformer engineered with electrostatically shielded windings for harmonic attenuation.
Versatile auxiliary power transformer for industrial control panels, automation machinery, and municipal pumping stations.
A technical guide for procurement managers, electrical consultants, and EPC contractors navigating Ireland’s evolving medium-voltage distribution infrastructure.
Ireland’s electrical distribution landscape is undergoing an unprecedented modernization shift driven by the National Climate Action Plan 2024, the expansion of high-density digital infrastructure in the Greater Dublin Area, and massive integration of onshore and offshore wind power across counties like Donegal, Galway, and Cork. As ESB Networks (Electricity Supply Board) accelerates the transition toward a decentralized 10kV, 20kV, and 38kV medium-voltage distribution grid, the demand for compact, tamper-proof, and environmentally resilient pad-mounted transformers and compact secondary substations (CSS) has grown exponentially.
Unlike conventional open-frame or pole-mounted transformer banks, modern pad-mounted suppliers in the Ireland market must address unique localized challenges: high atmospheric marine salinity (requiring ISO 12944 C5-M Coating), strict urban noise emissions limits near residential zones, and compliance with the mandatory European Union EU EcoDesign Directive Tier 2 (EU 2019/1783) loss thresholds.
To reduce greenhouse gas emissions across European distribution grids, transformers installed in Ireland must satisfy Tier 2 maximum no-load ($P_0$) and load loss ($P_k$) limits set under EN 50588-1.
Synergy Transformers achieves these stringent target efficiencies by utilizing high-permeability, laser-scribed Cold Rolled Grain Oriented (CRGO) steel cores alongside automated step-lap miter joint cutting. This cuts core losses by up to 28% compared to legacy installations, yielding lower total cost of ownership (TCO) over a 30-year operational life.
With pad-mounted substations frequently located adjacent to public commercial spaces, data hubs, and sensitive water catchments in Ireland, fire safety and environmental protection are paramount engineering metrics.
We offer pad-mounted units filled with bio-degradable FR3 natural ester fluid (Class K insulation, fire point > 300°C). This removes the need for costly external fire deluge walls or concrete containment bunds while extending paper insulation life through superior moisture-absorption properties.
Designed specifically for Irish coastal installation, steel enclosures undergo multi-stage shot blasting, zinc-rich epoxy priming, and poly-urethane top-coating to withstand salt-mist atmospheric corrosivity (ISO 12944).
Continuous copper/aluminium foil HV and LV windings eliminate axial short-circuit forces, providing mechanical withstand during severe grid through-faults and harmonic load peaks.
Fully enclosed, dead-front construction with lockable doors, hidden hinges, and internal barrier screens prevents unauthorized access, meeting public safety guidelines for urban municipal areas.
Pad-mounted substations and customized distribution transformers serve diverse operational environments across Ireland. Below is an engineering breakdown of primary application vectors:
Data centers in Ireland require high continuous uptime and minimal total harmonic distortion (THD). Our 11kV and 20kV dry-type cast resin and ester-filled pad-mounted step-down transformers feature K-factor ratings (K-13 / K-20) to absorb non-linear switch-mode power supply harmonics without overheating, while electrostatic copper shielding guards sensitive IT equipment against voltage spikes.
Solar PV array inverters and wind turbine generators generate cyclic loading profiles and voltage step-up demands. Synergy’s inverter duty pad-mounted step-up transformers connect 0.69kV / 0.8kV inverter outputs directly to the 10kV, 20kV, or 38kV regional ESB collection grid, equipped with multi-winding configurations and reinforced dielectric stress insulation.
Continuous batch manufacturing lines in Ireland’s biopharma hubs cannot tolerate micro-interruptions or voltage sags. Our 3-phase isolation transformers (50kVA - 630kVA) provide galvanic isolation, filtering grid noise and establishing clean local neutral-ground bonds for critical process controllers and cleanroom ventilation suites.
Replacing legacy open-air pole structures in dense suburban developments around Limerick and Waterford requires compact CSS units. Integrated with Vacuum Circuit Breakers (VCB) or Ring Main Units (RMU), pad-mounted substations allow direct underground cable termination with minimal surface footprint.
As Ireland progresses toward its target of generating 80% of electricity from renewable sources by 2030, several grid evolution trends directly impact pad-mounted transformer selection:
Quick reference guide for electrical design engineers specifying transformers for deployment in Ireland.
| Transformer Type | Power Rating Range | Voltage Classes (MV/LV) | Cooling / Dielectric | Environmental / Fire Rating | Primary Ireland Application |
|---|---|---|---|---|---|
| Oil/Ester Pad-Mounted Substation | 100 kVA – 3150 kVA | 10kV, 20kV, 38kV / 400V | ONAN / KNAN (Ester Fluid) | C5-M Enclosure / K-Class Fire | Renewable Solar/Wind, Utility Ring Main, Urban Substation |
| Cast Resin Dry-Type | 100 kVA – 4500 kVA | 11kV, 13.2kV, 20kV / 0.4kV | AN / AF (Air Natural/Forced) | F1 Fire / E2 Environmental / C2 Climatic | Data Centers, High-Rise Buildings, Hospitals, Indoor Substations |
| 3-Phase Dry Isolation | 15 kVA – 630 kVA | 380V, 415V, 480V / 220V | Air Natural (Epoxy Encapsulated) | IP23 to IP54 Enclosure Options | Medical Facilities, Biopharma Process Automation, Cleanrooms |
| Substation Step-Down Power | 3 MVA – 30 MVA | 33kV, 69kV / 10kV, 20kV | ONAN / ONAF | Heavy Industrial / Outdoor Substation | Utility Grid Interconnects, Heavy Steel & Mining Operations |
Established in 2004 in Rajkot, Gujarat, India, Synergy Transformers Pvt. Ltd. has grown into a globally recognized engineering manufacturer specializing in distribution transformers, power transformers, cast resin dry-type transformers, and compact substations. Operating from a modern 103,500+ sq. ft. manufacturing facility spanning over 131,500 sq. ft. of industrial land, our team of over 70 experienced engineers and technicians ensures every transformer delivered meets international quality standards.
Every stage of manufacturing—from high-precision CRGO core cutting, foil and wire winding, tank fabrication, and surface painting to complete oil filtration—is executed in-house under an ISO 9001 and ISO 14001 certified Quality Management System.
Our test bay performs 100% routine testing according to IEC 60076 & IS 2026, including winding resistance, voltage ratio, vector group verification, short-circuit impedance, no-load loss, load loss, and separate-source AC withstand voltage testing.
We provide full engineering drawing approval packages (GA drawings, schematic wiring, nameplate details), seaworthy protective packaging, nitrogen-filled export packing options, and complete witness test support for Irish EPC engineering teams.
Answers to key technical and commercial questions asked by electrical engineers and buyers in Ireland.
Yes. Our pad-mounted transformers and compact secondary substations are customized to comply with Irish grid standards, including primary medium-voltage classes (10kV, 20kV, and 38kV) and secondary low-voltage levels (400V 3-Phase / 230V Single-Phase at 50Hz). Technical specifications such as vector groups (e.g., Dyn11, Dyn5), tap changer ranges, and protective fuse/switchgear interfaces are configured directly against your approved Guaranteed Technical Particulars (GTP).
To resist Ireland's damp, saline atmospheric environment (especially coastal areas along the Atlantic seaboard), our exterior enclosures are finished with a specialized ISO 12944 C5-M high-durability coating system. This involves abrasive blast cleaning to Sa 2.5, followed by a zinc-rich epoxy primer, intermediate epoxy tie-coat, and UV-resistant polyurethane topcoat totaling over 240 microns dry film thickness.
All transformers bound for Ireland and the European Union are designed and tested to satisfy strict Tier 2 maximum allowable no-load loss ($A_0$) and load loss ($B_k$) limits under EN 50588-1. We achieve this through laser-scribed low-loss CRGO steel laminations and optimized coil geometry, ensuring full regulatory compliance and maximum energy savings.
Absolutely. We regularly engineer pad-mounted units with FR3 or synthetic ester fluids. Ester fluids provide a fire point exceeding 300°C (Class K), self-extinguishing safety, high moisture tolerance, and 100% rapid biodegradability—making them ideal for Irish data centers, urban substations, and environmentally sensitive agricultural zones.
Standard distribution and cast resin transformers are generally manufactured within 4 to 6 weeks following drawing approval. Custom high-capacity power transformers or fully integrated compact secondary substations typically require 6 to 10 weeks. Shipping time from India to major Irish ports (such as Dublin Port or Cork Port) takes approximately 25 to 35 days.
Yes. We welcome customer witness testing and third-party inspection agencies (such as SGS, Bureau Veritas, TUV, or DNV) at our Rajkot manufacturing facility. Complete routine test reports, type test certificates, and quality dossier records are delivered with every order prior to container loading.
Contact our pre-sales electrical engineering desk to submit your single-line diagrams (SLD), specification sheets, or site requirements. We deliver comprehensive technical proposals and competitive factory quotes within 24 hours.
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