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Written by: Joomla

Category: Blog (en-EN)

Published: 12 September 2025

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FREQUENCY TRANSFORMER - TRANSFORMER CENTER

FREQUENCY TRANSFORMER, we design and manufacture MV/LV transformer substations in kiosk or container form with a turnkey approach. We offer IEC-compliant, compact, safe, and fast-starting solutions for distribution, solar power plants/wind power plants, power plants, and industrial projects.

Why a Frequency Transformer?

• One-stop solution: RMU + Transformer + LV panel + SCADA/RTU integration
• Speed ​​and flexibility: 24–48 hour preliminary quote, short production cycle, scheduled shipment
• Security and compliance: IEC/EN, local distribution company specifications, and fire safety
• Speed ​​on site: Plug-and-play installation after Factory Acceptance Test (FAT), minimal on-site work
• Europe-focused logistics: Delivery in accordance with Incoterms, appropriate packaging, and customs support

Solution Types:

• Kiosk (concrete or metal) transformer substations
• Container-type mobile/portable transformer substations
• Double-compartment/three-compartment layout: MV switchgear – Transformer – LV distribution
• Open-field modular transformer platforms on skids/pallets

Components and Integration:

• MV side: RMU with load break switch/protection, measuring switchgear, metal-enclosed modular switchgear
• Transformer: Oil-immersed (hermetic/with expansion tank, ONAN/ONAF) or dry-type (AN/AF), 100 kVA–40 MVA
• LV side: Switchgear and MCC panels, compensation/filter panels, metering and metering modules
• Protection and control: Relays, secondary circuits, grounding bars, interlocks and interlocks
• Monitoring/SCADA: Dry contacts, Modbus/IEC 61850 gateways, remote monitoring interfaces
• Auxiliary systems: Lighting, HVAC/filtration, fire detection/extinguishing, cable trays

Technical Specifications:

• Voltage levels: MV 6–36 kV; LV 0.4–1 kV
• Short-circuit resistance: Complies with local DSO requirements, 16–31.5 kA typical
• Protection class: IP23–IP55; indoor/outdoor enclosure (C3–C5-M)
• Temperature/climate: -25/+50°C standard; special solutions for extreme climates and corrosion
• Seismic design and EMC: According to regional requirements
• Cable entries: Bottom/top, cable well, and flange/cap options
• Tests: Routine and type tests, dielectric tests, functional FAT; customer-witnessed

Application Areas:

• Grid MV/LV step-down stations, distribution company sites
• SPP/RES stations, step-down/step-down intermediate centers
• BESS and microgrid projects
• Industrial facilities, mining, construction sites, temporary energy needs

Engineering and Project Support:

• Single-line diagram, short circuit, and load flow studies
• Grounding, potential equalization, and step-touch voltage analysis
• Protection coordination and relay setting files
• Layout, cable route, and civil infrastructure interface drawings
• Commissioning procedures and field training

Importer/EPC Advantages:

• Fast quote and technical clarification list (24–48 hours)
• Country-specific nameplate and design adapted to DSO standards
• EXW, FCA, CPT, DAP delivery; customs and packaging documentation
• Repeatable platform architecture for synchronous shipping and multiple sites

Frequently Asked Questions:

• Delivery time? 6–12 weeks depending on configuration; semi-stock modules are possible.
• Concrete or metal kiosk? Let's choose together based on climate, vandalism risk, and transportation.
• Oil-filled or dry-filled? Let's decide based on fire safety and TCO criteria.
• Noise target? Low-noise designs complying with local dB(A) limits are available.

Call to Action:Contact us with a single-line diagram, power/voltage values, and site conditions for your transformer substation needs. Let's 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: 641

FREQUENCY TRANSFORMER - TRANSFORMER REPLACEMENT

FREQUENCY TRANSFORMER, we provide end-to-end transformer replacement services at your existing transformer sites, including the supply of new transformers compatible with the same footprint, assembly and disassembly coordination, and commissioning support. Our goal is to increase reliability and efficiency by minimizing downtime.

Why Us?

• Rapid assessment: Preliminary quote and compatibility analysis within 24–48 hours
• Engineering compliance: Matching with existing connection group, impedance, short-circuit level, and nameplate values
• Logistics and planning: Crane, transportation, temporary power, and site coordination
• Standard compliance: IEC/EN 60076, EcoDesign loss classes, and local DSO specifications
• Documentation: Type/routine test reports, CE/CoC, nameplate, installation, and commissioning procedures

Scope and Services:

• Dismantling: Safe de-energization of the old transformer, oil draining, and disposal in accordance with environmental regulations
• Supply: New transformer, oil- or dry-type (cast resin), with hermetic/expansion tank
• Reorientation: Mechanical adapters for identical terminal/header positions, footprint, and cable height
• Auxiliary equipment: RMU/cubicle settings, LV panel connections, CT/VT, and relay compatibility
• Commissioning: Routine checks, isolation/partial discharge (dry type), oil tests (DGA, humidity), measurements under load
• Waste management: Coordination of licensed transportation/recycling of old oil and equipment

Technical Attention Points:

• Voltage and tap ranges: E.g., 36/0.4 kV; ±2x2.5% or ±5x1.5% tap options
• Connection group: Dyn11, etc.; system synchronization and phase rotation must be verified
• Short-circuit power and impedance: Compatibility with the existing grid, effect of protection settings
• Losses and noise: EcoDesign loss class, compliance with dB(A) limits for residential areas
• Cooling and oil: ONAN/ONAF; mineral or natural ester (FR3) – fire/environmental safety
• Environment and site: Temperature, altitude, corrosion class (C3–C5-M), IP protection and seismic requirements

Typical Replacement Process:

1. Preliminary survey and data collection: Nameplate information, single-line diagram, cable/terminal dimensions, photographs
2. Compliance engineering: Electrical and mechanical pairing, adapter/terminal plan
3. Quotation and delivery: Production/supply plan, FAT schedule, and shipping
4. Site preparation: De-energization plan, crane/equipment, temporary power organization
5. Disassembly and assembly: Removal of old transformer, placement of new transformer, connections
6. Testing and commissioning Receiving: Insulation/pile tests, ratio/impedance verification, measurement under load
7. Delivery and training: Operation/maintenance instructions and spare parts list

Frequently Asked Questions:

• What will be the downtime? Most replacements can be completed within 6–24 hours, depending on the configuration.
• Will it fit the old foundation? The "bolt holes" are usually protected with footprint matching and/or a base adapter.
• Oil treatments? Oil sampling, DGA, moisture, and dielectric tests are performed; a natural ester option is available.
• Permits? We plan and coordinate DSO/AMR, occupational safety, and environmental permits.

Required information for the offer (checklist):

• Name of the existing transformer (kVA, MV/LV voltage, connection group, impedance, tap)
• Loss values ​​and noise target
• Terminal/header type and cable entry direction
• Site dimensions, foundation/footprint, access and crane capabilities
• Operating conditions: Temperature, altitude, corrosion, and IP/seismic requirements
• Delivery target and delivery method (EXW/FCA/CPT/DAP)

Call to Action: Share your nameplate photo, single-line diagram, and site visuals for your transformer replacement project. We'll provide a compatibility analysis and a quote with a clear deadline within 24–48 hours.

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Written by: Joomla

Category: Blog (en-EN)

Published: 12 September 2025

Hits: 678

FREQUENCY TRANSFORMER - DISTRIBUTION TRANSFORMERS

FREQUENCY TRANSFORMER offers fast quotes, flexible planning, and on-time delivery for oil- and dry-type distribution transformers from 100 kVA to 10 MVA. We provide reliable supply for EPCs, importers, and operators with our IEC 60076-compliant, low-loss, and high-short-circuit-resistant designs.

Why FREQUENCY TRANSFORMERS?

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

Product Scope:

• Oil-immersed distribution transformers: Hermetic and with expansion tanks (ONAN/ONAF)
• Dry-type (cast resin/VPI) distribution transformers: For indoor/critical facilities
• Kiosk/container integration: RMU + Transformer + LV panel package solutions
• Special series with low loss and low noise classes

Application Areas:

• Network MV/LV step-down centers and distribution companies
• Solar power plants/window power plants (inverter output and booster applications)
• Industrial facilities Mining, petrochemical, steel, and infrastructure projects
• Residential and commercial buildings, rural and harsh climate conditions

Engineering and Integration:

• Short-circuit withstand and impedance optimization
• Thermal design for harmonic/dynamic loads (inverter/PCS)
• Dry contacts and sensor interfaces for SCADA/RTU integration
• Support for grounding, voltage drop, and protection coordination
• Field logistics: Lifting points, oil filling/draining, rapid commissioning

Benefits for importers and EPCs:

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

Frequently Asked Questions:

• Delivery time? 4–10 weeks depending on strength and specifications; part-stock options available.
• Oil- or dry-type? Let's choose together based on fire safety, installation location, and TCO.
• Which oil? Standard mineral; natural ester (FR3) is recommended for fire/environmental criteria.
• Noise target? We offer low dB(A) options that comply with local regulations.

Required information for the quote (checklist):

• kVA, MV/LV voltages, connection group (e.g., Dyn11), impedance, and tap spacing
• Loss targets and noise margin
• Installation type (kiosk/container/outdoor), IP and corrosion class
• Cable entry directions, header/connector types, busbar termination requirements
• Environmental conditions: Temperature, altitude, seismic, and EMC requirements
• Termination target and delivery method (EXW/FCA/CPT/DAP)

Call to Action: Contact us with your single-line diagram, load profile, and network parameters to determine the right distribution transformer for your project. We'll provide a fast quote, a clear deadline, and reliable delivery.