FREQUENCY TRANSFORMERS - DISTRIBUTION AND MEDIUM POWER TRANSFORMERS

At FREQUENCY TRANSFORMERS, we offer fast quotes, flexible planning, and on-time delivery for oil-immersed and dry-immersed distribution and medium power transformers from 100 kVA to 40 MVA. With our export experience focused on Europe and the Balkans, we provide competitive prices, consistent quality, and seamless logistics for EPCs, importers, and operators.

Why FREQUENCY TRANSFORMERS?

• Full compliance with IEC/EN standards: IEC 60076 series, EcoDesign efficiency requirements
• Speed ​​and flexibility: Preliminary quote in 24–48 hours, scalable production, scheduled shipment
• Reliable performance: Low losses, low noise, high short-circuit resistance
• Complete documentation: Type/routine test reports, nameplates, CE/CoC, and project drawings
• Europe-focused logistics: Delivery in accordance with Incoterms, customs, and packaging support

Product Scope:

• Oil-immersed distribution transformers: Hermetic and with expansion tanks (ONAN/ONAF)
• Medium-power step-up/step-down transformers: 2.5–40 MVA, 6–154 kV classes (project-based)
• Dry-type (cast resin/VPI) transformers: 100 kVA–10 MVA, indoor and corrosive environment options
• Kiosk/container transformer substations: RMU + Transformer + LV panel integrated solutions
• Special applications: BESS/PCS compatible, solar power plant inverter output, wind turbine/booster transformers

Technical Specifications and Options:

• Power range: 100 kVA – 40 MVA
• Voltage levels: LV 0.4–0.8 kV; MV 6–36 kV typical; HV side project-based (52–154 kV)
• Cooling: ONAN/ONAF/ODAF (depending on project), dry type AN/AF
• Oil options: Mineral, natural ester (FR3) – environmental and fire safety
• Connection groups: Dyn11, YNd1, YNyn0, etc. depending on grid and inverter/topology
• Loss classes: Low no-load and load losses in accordance with EcoDesign/EU requirements
• Accessories: Buchholz, pressure relay, TTR/CT/VT, temperature monitoring (PT100), fan groups
• Enclosure/protection: IP23–IP55, C3–C5-M corrosion class paint, seismic design option
• Tests: Routine, type and dielectric tests; customer-witnessed FAT; Partial discharge (dry type)

Application Areas:

• Grid-connected solar power plants (step-up transformers, station transformers)
• Industrial facilities, mining, petrochemical, steel, data centers, and hospitals
• Distribution companies and municipal grids
• Energy storage (BESS) and microgrid/hybrid applications

Engineering and Integration:

• Optimized impedance and thermal design for short circuits and harmonic loads
• SCADA/RTU integration: Dry contacts, Modbus/IEC 61850 gateways (panel side)
• Protection coordination: Relay settings, grounding, and voltage drop accounts
• Field logistics: Modular transport, lifting points, compact footprint, and rapid commissioning

Benefits for importers and EPCs:

• Fast quotation and technical clarification list (24–48 hours)
• Country-specific nameplates, documentation, and multilingual content
• EXW, FCA, CPT, DAP delivery options; customs paperwork management
• Long-term price stability, flexible order quantities, and synchronized shipping

Frequently Asked Questions:

• Lead times? 4–12 weeks depending on power and type; stock and part-stock options available.
• Minimum order? Flexible depending on project scale.
• Noise levels? Low dB(A) design options are suitable for residential/business center boundaries.
• Oil- or dry-type? Let's choose together based on fire safety, installation location, and cost/performance criteria.

Call to Action: Contact us with a single-line diagram, load profile, and network parameters for your distribution and medium-power transformer needs. Let us secure your project with a fast quote, clear deadlines, and reliable delivery.