Rigorously tested according to IEC 60076, IS 2026, and CE directives. Optimized for stable control voltage delivery, low thermal dissipation, and severe continuous industrial duty.
Built for grid reconstruction and heavy substation tie-ins. Features multi-step tap changing, low loss CRGO core, and robust ONAN/ONAF cooling designs.
Ultra-compact toroidal magnetic topology engineered for silent, high-efficiency power delivery in sensitive CNC controllers and automation cabinets.
Flexible step-down isolation transformer for machine panels (240V/220V to 12V/24V/36V). High inrush current withstand capability.
Primary utility-grade power transformer built for high voltage transmission networks, featuring reinforced winding insulation and complete protection fittings.
Heavy-duty 110V/220V to 36V/48V step-down transformer featuring pure copper windings. Specifically built for packaging and conveyor machinery.
Versatile BK series 1VA to 500VA industrial control transformer providing isolated 36V/24V low-voltage auxiliary power for circuit breakers and relays.
Advanced German-standard structure with terminal block design, offering superior mechanical protection and high voltage isolation for control circuits.
High-capacity step-down transformer designed for municipal power distribution grids, industrial hubs, and large-scale power transformation plants.
Istanbul stands as the primary industrial engine of Turkey and the broader Marmara region, bridging European and Asian electrical standards. Industrial parks such as İkitelli Organize Sanayi Bölgesi (İOSB), Tuzla Industrial Zone, Dudullu OSB, and neighboring logistics corridors in Kocaeli and Gebze require uncompromising reliability in control power transformation. Industrial control transformers serve as the foundational backbone for electrical control panels, automated motor drives, relay logic circuits, and CNC machinery across these high-output zones.
When selecting control transformers for deployment within Turkish industrial facilities or for OEM machinery exported through Istanbul’s port system (such as the Port of Ambarlı and Haydarpaşa), procurement managers and electrical systems consultants face distinct operational challenges. Fluctuations in grid supply, harmonic distortion introduced by non-linear variable frequency drives (VFDs), ambient thermal stress in enclosed steel switchgear cabinets, and strict adherence to European Union EcoDesign directives necessitate superior transformer design and core fabrication.
Technical Insight for Marmara Electrical Engineers: A control transformer must maintain secondary voltage stability within ±5% during high instantaneous inrush currents caused by electromagnetic contactor energization. Standard lighting or distribution transformers lack the low-reactance design required for this duty, leading to contactor chatter, contact welding, and system lockouts.
Modern industrial control transformers exported to the Istanbul market utilize advanced magnetic core materials and precision winding configurations to minimize both no-load core losses (iron losses) and full-load copper losses. Our manufacturing facility employs high-permeability, cold-rolled grain-oriented (CRGO) silicon steel laminations sourced from premier steel mills. Through precision step-lap miter core cutting, stray flux leakage is drastically suppressed, achieving significant loss reductions over traditional punched laminations.
For mid-to-high capacity control transformers (such as 5kVA to 10kVA BK, JBK5, and custom isolation units), standard wire-wound coils often create high mechanical stress points during sudden load changes. Implementing continuous electrolytic copper foil winding eliminates mechanical transposition steps while spreading axial short-circuit forces uniformly along the length of the coil structure. This engineering approach delivers three direct field benefits:
Industrial machinery in metal processing, foundry operations, and textile dyeing environments in Turkey often operates under elevated ambient temperatures. Control transformers exported to Istanbul incorporate Class F (155°C) and Class H (180°C) high-grade insulation materials, impregnated using Vacuum Pressure Impregnation (VPI) with solvent-free polyester resins. This seals the windings against moisture ingress, airborne industrial dust, chemical fumes, and salt-laden maritime air prevalent around Tuzla shipyards.
Compare core technical parameters across primary transformer categories engineered for industrial procurement across Turkey.
| Transformer Family | Rating Range | Primary Voltage (HV) | Secondary Voltage (LV) | Insulation Class | Primary Standard |
|---|---|---|---|---|---|
| JBK5 / BK Control Transformer | 50 VA – 10 kVA | 220V / 380V / 400V / 415V | 12V / 24V / 36V / 110V / 220V | Class B / F / H | IEC 61558-2-4 / CE |
| Single-Phase Isolation Transformer | 1 kVA – 50 kVA | 110V – 480V Single Phase | 110V – 240V Isolated | Class F / H (VPI) | IEC 60076 / IS 2026 |
| Cast Resin Dry-Type Transformer | 100 kVA – 3150 kVA | 6kV / 11kV / 33kV | 400V / 415V / 690V | F1, E2, C2 (Class F) | IEC 60076-11 / EN 50588 |
| Oil-Immersed Distribution Transformer | 16 kVA – 3150 kVA | 11kV / 22kV / 33kV | 400V / 415V (3-Phase) | ONAN Oil Filled | IS 1180 / IEC 60076 |
| Solar / Wind Inverter Duty Transformer | 250 kVA – 3500 kVA| | 11kV / 33kV Grid Tier | 315V – 800V Multi-Winding | ONAN / ONAF | IEC 60076-16 Standard |
| Induction Furnace Transformer | Custom Heavy kVA | 6.6kV / 11kV / 33kV | High Current Low-V LV | OFWF / ONAN Forced | IEC Heavy Duty Steel |
High-precision lathe machinery, metal stamping presses, and automated CNC tooling centers depend on single-phase JBK5 and BK series control transformers to provide stable step-down 24VAC/24VDC control supply for relays, PLCs, and digital readouts without line interference.
Shipbuilding yards in Tuzla demand isolation transformers built with corrosion-resistant varnish coatings and salt-fog proof enclosures. These supply steady auxiliary power to winch control panels, navigation systems, and dockside power supply stations.
High-speed weaving machinery and automated dyeing equipment operate continuously. Continuous copper foil-wound transformers protect delicate sensor controls against line surges caused by large induction motors cycling nearby.
Automated blow molding, thermoforming, and high-speed packaging machinery utilize 5kVA to 10kVA control units to handle heavy solenoid switching surges while ensuring strict conformity to European CE machine safety directives.
Utility-grade power transformers (such as 66kV to 220kV classes) support grid modernization initiatives led by TEİAŞ, stepping down regional transmission lines to feed municipal industrial sub-grids across the Marmara region.
Commercial high-rises and metro transport lines along Istanbul’s European and Asian axes utilize weather-tight compact secondary substations (CSS) with integrated dry-type transformers, vacuum circuit breakers (VCBs), and ring main units (RMUs).
As Turkish manufacturers strengthen their export positions into EU markets under the EU-Turkey Customs Union and align with the European Green Deal, electrical equipment specifications are undergoing key shifts:
Industrial facility operators across Turkey are actively replacing legacy, high-loss control transformers with EcoDesign-compliant units. Reducing no-load losses not only drops baseline electrical consumption across thousands of control panels in large manufacturing plants but also limits thermal dissipation inside control cabinets, extending the operational life of sensitive electronics like microcontrollers and variable speed drives.
With rooftop solar PV installations expanding rapidly across industrial zones in Kocaeli, Tekirdağ, and Sakarya, industrial control circuits must now contend with bi-directional power flow conditions, transient voltage spikes, and harmonic distortion. Transformer designs now incorporate enhanced electrostatic shielding between primary and secondary windings to drain high-frequency electrical noise safely to ground.
Our integrated manufacturing plant spans over 103,500 square feet of advanced production floor space, equipped with automatic core-cutting lines, CNC copper wire and foil winding machinery, vacuum pressure impregnation chambers, and dedicated steel enclosure fabrication shops. Every control and power transformer manufactured for export is produced under a single, unified ISO 9001 quality management framework.
100% In-House Routine Testing Guarantee: Every unit leaving our factory undergoes comprehensive routine testing prior to dispatch clearance. Routine testing includes: Winding Resistance Measurement, Voltage Ratio & Phase Displacement, Insulation Resistance (Megger Test), Separate-Source AC Withstand Test, Induced Overvoltage Test, and Measurement of No-Load Loss and Load Loss.
For international buyers and engineering contractors sourcing equipment for delivery to Istanbul or third-country export destinations, we supply complete technical dossiers including guaranteed technical particulars (GTP), type test reports (including temperature rise and short-circuit withstand validation), dimensioned GA drawings, and seaworthy export packing specifications.
Answers to common commercial and technical questions from Turkish electrical contractors, panel builders, and machinery OEMs.
Standard primary voltages for industrial control transformers in Turkey include 220V, 380V, 400V, and 415V single-phase at 50Hz. Common secondary voltages required for local control circuits are 12V, 24V, 36V, 110V, and 220V. Custom dual-voltage primaries (e.g., 230V/400V selectable via terminal links) are also manufactured to accommodate imported machine specifications.
Our single-phase control and isolation transformers are designed and certified in accordance with IEC/EN 61558-1 and IEC/EN 61558-2-4 standards. They comply fully with the EU Low Voltage Directive (LVD 2014/35/EU) and Electromagnetic Compatibility Directive (EMC 2014/30/EU), making them fully eligible for seamless customs clearance into Turkey and re-export to European markets.
Standard catalog single-phase control transformers (BK and JBK5 series up to 10kVA) are typically ready for dispatch within 2 to 3 weeks following drawing approval. Custom power, dry-type, or furnace transformers require 4 to 8 weeks depending on specifications. Shipments are packed in seaworthy, vacuum-sealed wooden cases suitable for direct ocean freight to Port of Ambarlı or Haydarpaşa, or express air transport to Istanbul Airport (IST).
VFDs generate significant high-frequency harmonics and common-mode noise back onto the supply line. Using a dedicated control isolation transformer with an electrostatic ground shield between primary and secondary windings prevents high-frequency transients from interfering with sensitive PLC sensors, microcontrollers, and digital communications within the cabinet.
Yes. We welcome third-party inspection agencies such as SGS, Bureau Veritas, TÜV, or Intertek, as well as client-appointed witness engineers at our factory test bay prior to packing. Signed routine test certificates and guaranteed technical data sheets are provided with all shipping documentation.
