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Written by: Joomla

Category: Blog (en-EN)

Published: 12 September 2025

Hits: 11

FREQUENCY TRANSFORMERS - DRY-TYPE TRANSFORMERS

At FREQUENCY TRANSFORMERS, we offer fast quotes, flexible planning, and on-time delivery for cast resin and VPI/VPE dry-type transformers. We provide the optimal solution for EPCs, importers, and end users with fire safety, low maintenance, and resistance to indoor and corrosive environments.

Why a Dry-Type Transformer?

• Fire safety: Flame-resistant, low smoke emission (F1/NHN material options)
• Low maintenance: No oil changes, no risk of leakage, long lifespan
• Indoor suitability: Safe use in hospitals, shopping malls, tunnels, data centers, residential, and industrial facilities
• Environmentally friendly: Low environmental impact due to no oil or risk of leakage

Why a Frequency Transformer?

• IEC/EN 60076-11 compliant design and testing
• Low loss, low noise, high efficiency classes
• 24–48 Preliminary quotation in 24 hours, clear delivery times, and transparent planning.
• European and Balkan-focused logistics, full documentation, and multilingual labeling.

Product Scope:

• Cast resin dry-type distribution and power transformers (class F/H)
• VPI/VPE insulated dry-type transformers
• Special series with low noise and low loss classes.
• Kiosk/container and LV panel integration solutions.

Technical Specifications and Options:

• Power range: 100 kVA – 10 MVA (higher powers on a project-by-project basis)
• Voltage levels: 0.4–0.8 kV LV, 6–36 kV MV typical.
• Cooling: AN, AF (with optional fan support)
• Insulation class: F or H; temperature rise: 80K/100K/120K options
• Windings: Aluminum or copper, vacuum-cast resin
• Connection groups: Dyn11, Yyn0, YNd1, etc.
• Protection: IP21–IP54 enclosure, C3–C5-M corrosion-rated paint for outdoor use
• Sensors and accessories: PT100/NTC, temperature relay, fan groups, wheels, vibro isolator
• Seismic design: Seismic Zone 4 resistance option available
• Tests: Routine, type, and partial discharge tests; Customer-tested FAT

Application Areas:

• Solar power plant/wind inverter output, BESS/PCS integration
• Industrial facilities, data centers, hospitals, airports, tunnels, mines
• IP-rated enclosures for high humidity, dust, and corrosive environments
• Residential and commercial buildings requiring low noise

Engineering and Integration:

• Harmonic-resistant design for high THDi loads
• Short-circuit mechanical strength and voltage drop optimization
• Dry contact and temperature monitoring outputs for SCADA/RTU integration
• Package solution with LV panels, compensation, and harmonic filter panels

Importer and Benefits for EPCs:

• Fast quotation and technical clarification list (24–48 hours)
• CE, nameplates, single-line diagrams, and multilingual documentation
• EXW, FCA, CPT, DAP delivery terms and customs paperwork support
• Flexible order quantities, synchronized shipping, and long-term price stability

Frequently Asked Questions:

• Minimum order quantity? Flexible depending on the project.
• Noise level targets? Low dB(A) options available for 50/60 Hz.
• Maintenance requirements? Periodic visual inspection and cleaning; no oil changes.
• Ambient conditions? -25°C/+40°C is standard, with extended ranges available upon request.

Call to Action:Contact us with your single-line diagram and load profile to select the right dry-type transformer for your project. We'll support you with a fast quote, clear delivery times, and reliable delivery.

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Written by: Joomla

Category: Blog (en-EN)

Published: 12 September 2025

Hits: 19

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.

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Written by: Joomla

Category: Blog (en-EN)

Published: 12 September 2025

Hits: 24

FREQUENCY TRANSFORMERS - MEDIUM VOLTAGE TRANSFORMERS

As FREQUENCY TRANSFORMERS, we offer fast quotes, flexible planning, and on-time delivery for oil- and dry-type medium voltage transformers in the 6–36 kV range. With our Europe and Balkan-focused export model, we provide competitive prices, consistent quality, and seamless logistics for EPCs, importers, and operators.

Why FREQUENCY TRANSFORMERS?

• Full compliance with IEC/EN 60076 series and EcoDesign efficiency requirements
• Preliminary offer, transparent delivery times, and scheduled shipments within 24–48 hours
• Low losses, low noise, high short-circuit and impact resistance
• Full documentation: Type/routine test reports, CE/CoC, nameplates, and project drawings
• Cost-effective logistics for Europe and the Balkans, delivery in accordance with Incoterms

Product Scope:

• Oil-immersed MV transformers: Hermetic and with expansion tanks (ONAN/ONAF)
• Dry-type (cast resin/VPI) MV transformers: For indoor use, tunnels, and critical facilities
• Kiosk/container MV transformer substations: RMU + Transformer + LV panel integrated solutions
• Application-specific transformers: Solar power plant inverter output, wind turbine/tower base, BESS/PCS compatible

Technical Specifications and Options:

• Voltage levels: 6–36 kV (MV), low-side 0.4–0.8 kV; intermediate levels optional
• Power range: 100 kVA – 20 MVA (higher powers possible on a project basis)
• Cooling: Oil-immersed ONAN/ONAF; dry type AN/AF (fan-supported)
• Oil options: Mineral or natural ester (FR3) – environmental and fire safety
• Connection groups: Suitable for grid/inverter topologies such as Dyn11, YNd1, YNyn0, etc.
• Loss classes: Low no-load and load losses in accordance with AB/EcoDesign
• Accessories: Buchholz, pressure relay, PT100 temperature sensors, fan groups, CT/VT
• Enclosure/protection: IP23–IP55; C3–C5-M corrosion class coating; seismic design option
• Tests: Routine, type, and dielectric tests; partial discharge in dry type; Customer-tested FAT

Application Areas:

• Grid distribution and MV/LV step-down centers
• Step-up and station transformers for solar power plants/RES plants
• Industrial facilities, data centers, hospitals, mining, and tunnel projects
• Energy storage (BESS) and microgrid/hybrid systems

Engineering and Integration:

• Optimized impedance and thermal design for short-circuit and harmonic loads
• Thermal/harmonic resistance in THDi high inverter/PCS applications
• SCADA/RTU integration: Dry contacts and monitoring interfaces (via panel)
• Protection coordination: Relay settings, grounding, and voltage drop calculation support
• Field logistics: Modular/container solutions, lifting points, rapid commissioning

Benefits for importers and EPCs:

• Fast preliminary offer and technical clarification list in 24–48 hours
• Country-specific nameplate, CE/conformity declarations, and multilingual documentation
• EXW, FCA, CPT, DAP delivery options; customs and packaging support
• Long-term price stability, flexible order quantities, and synchronized shipping

Frequently Asked Questions:

• Delivery times? 4–12 weeks depending on type and power; stock/semi-stock options available.
• Oil- or dry-type? Let's determine it together based on fire safety, installation location, and TCO criteria.
• Noise level? Low dB(A) options suitable for residential/business center boundaries are available.
• Which tests? Routine and type tests, dielectric and partial discharge (dry type), customer-witnessed FAT.

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

Details

Written by: Joomla

Category: Blog (en-EN)

Published: 12 September 2025

Hits: 20

FREQUENCY TRANSFORMERS - MEDIUM POWER TRANSFORMERS

As FREQUENCY TRANSFORMERS, we offer fast quotes, flexible planning, and on-time delivery for oil-immersed and dry-type medium power transformers. Our IEC 60076-compliant designs, with low losses and high short-circuit resistance, ensure reliable supply for EPCs, importers, and operators.

Why FREQUENCY TRANSFORMERS?

• Standard compliance: IEC/EN 60076 series, EcoDesign efficiency requirements
• Speed ​​and transparency: 24–48 hour preliminary quote, clear delivery schedule, scheduled shipment
• Reliability: Low no-load/load loss, low noise, high surge and short-circuit resistance
• Documentation: Type/routine test reports, CE/CoC, nameplate, and project drawings
• Logistics: Europe and Balkan-focused deliveries, Incoterms-compliant options

Product Scope:

• Oil-immersed medium power transformers: Hermetic or with expansion tank (ONAN/ONAF/ODAF)
• Dry-type (cast resin/VPI) medium power transformers: Indoor/critical facility applications
• Step-up/step-down transformers: Solar power plants/windows power stations, grid intermediate voltages
• Kiosk/container transformer substations: RMU + Transformer + LV panel integrated packages
• Special applications: BESS/PCS compatible, low-harmonic and low-noise series

Technical Specifications and Options:

• Power range: 2.5–40 MVA (higher powers possible on a project basis)
• Voltage levels: MV 6–36 kV; HV side project-based (52–154 kV typical); LV 0.4–1 kV
• Cooling: ONAN/ONAF/ODAF (oil-immersed); AN/AF (dry-type)
• Oil: Mineral or natural ester (FR3) – environmental and fire safety
• Insulation: High impact resistance; BIL/LI levels as required by project
• Connection groups: Suitable for topologies such as Dyn11, YNd1, YNyn0, etc.
• Loss classes: Low-loss options compatible with EU/EcoDesign
• Accessories: Buchholz, pressure relay, oil/level/temperature indicators, CT/VT, fan groups
• Monitoring: PT100/NTC, temperature relay, dry contacts; Interface for online monitoring
• Enclosure/coating: IP23–IP55; C3–C5-M corrosion-rated paint; seismic design option
• Tests: Routine, type, and dielectric tests; dry-type partial discharge; customer-tested FAT

Application Areas:

• Solar power plants/wind power plants: Step-up station transformers, station/load centers
• Grid and distribution companies: MV/HV intermediate voltage transformations
• Energy storage (BESS) and microgrids: PCS-compatible designs
• Heavy industry, data centers, hospitals, mining, and infrastructure projects

Engineering and Integration:

• Optimized impedance and thermal design for short-circuit and dynamic loads
• Harmonic and thermal resistance in high THDi applications (inverter/PCS)
• SCADA/RTU integration: Dry contacts, monitoring modules (panel (via)
• Support for protection coordination, voltage drop, and grounding calculations
• Field logistics: Modular transport, lifting points, rapid commissioning procedures

Benefits for importers and EPCs:

• Fast quotation and technical clarification list in 24–48 hours
• Country-specific nameplate, CE/CoC, single-line, and assembly drawings
• EXW, FCA, CPT, DAP delivery options; customs and packaging support
• Long-term price stability, flexible order quantities, and synchronized shipping

Frequently Asked Questions:

• Delivery times? 6–14 weeks depending on power/specifications; part-stock options possible.
• Oil- or dry-type? Let's choose together based on fire safety, installation location, and TCO.
• Noise target? We offer low dB(A) designs that comply with local regulations.
• Which tests? Routine/type/dielectric tests in accordance with IEC 60076; customer-witnessed FAT.

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