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Designed for industrial energy efficiency, regional grid stability, and seamless instrumentation matching Turkey's evolving power network standards.
Engineered for dense metropolitan substations in Istanbul and Ankara, delivering superior fire safety, low noise emission, and extreme thermal resilience.
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Optimized for regional Turkish distribution operators (EDAŞ), minimizing no-load losses with premium-grade electrolytic copper winding.
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Moisture-proof and flame-retardant casting ideal for Izmir, Marmara industrial zones, underground rail lines, and high-humidity coastal environments.
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Provides essential overvoltage and lightning surge protection for substation neutral grounding systems throughout high-seismic Anatolian regions.
Explore Specifications →The Republic of Turkey sits at the strategic crossroads of Eurasian energy corridors, operating one of the largest synchronized high-voltage electrical networks in the ENTSO-E (European Network of Transmission System Operators for Electricity) continental European zone. Under the leadership of TEİAŞ (Türkiye Elektrik İletim A.Ş.) and 21 regional electricity distribution companies (EDAŞ), Turkey is undergoing an unprecedented modernization push toward intelligent, cyber-resilient, and fully digital substations governed by the IEC 61850-9-2 process bus architecture.
In this digital grid paradigm, traditional inductive voltage transformers (VTs) and capacitive potential transformers (CVTs) present inherent limitations: ferromagnetic resonance, saturation during severe transients, dielectric breakdown risks from oil leaks, bulky footprints, and analog signal degradation over lengthy copper cables. Optical Potential Transformers (OPTs), utilizing electro-optic modulation (Pockels effect) and pure fiber-optic signal transmission, have emerged as the paramount instrument transformer technology for Turkish utilities, renewable megaprojects, and heavy industrial complexes.
OPTs replace conventional electromagnetic coupling with pure electro-optic crystals and passive fiber loops. This eradicates ferroresonance catastrophes, eliminates explosive oil hazards, and provides instantaneous, wide-bandwidth optical voltage sensing with nanosecond transient response—vital for stabilizing high-penetration wind corridors in the Aegean and giant solar installations across Central Anatolia.
Engineered to surpass legacy instrumentation standards and deliver uncompromised precision across 35kV, 154kV, 220kV, and 400kV substations.
By replacing heavy iron cores with advanced Pockels effect crystals, OPTs entirely eliminate ferromagnetic resonance, magnetic saturation, and electromagnetic interference (EMI/RFI). Substation protection relays receive authentic primary waveform reproduction without signal distortion.
Equipped with intelligent Merging Units (MUs), our custom OPTs output Sampled Measured Values (SMV) directly via optical Ethernet fiber. This cuts copper cabling by over 80%, optimizes control room space, and prevents secondary circuit hazardous open-loop overvoltages.
Custom-built with ultra-lightweight composite silicone polymer housing, our OPTs withstand severe seismic accelerations exceeding IEEE 693 / Turkish Seismic Zone 1 requirements, coastal saline humidity along the Marmara Sea, and extreme temperature swings in Eastern Anatolia.
Meeting rigorous municipal, high-speed transit, heavy manufacturing, and green power generation criteria.
Turkey’s wind power capacity in the Aegean and Marmara regions (Balıkesir, İzmir, Çanakkale) and gigawatt-scale photovoltaic projects such as the Karapınar Solar Power Plant in Konya require precise harmonic measurement and wide dynamic response. Custom Optical Potential Transformers accurately track harmonic frequencies up to the 50th order, ensuring stringent grid code compliance and real-time reactive power compensation.
Industrial manufacturing centers in Gebze (Organized Industrial Zones - OSB), Dilovası, İskenderun, and Aliağa operate heavy electric arc furnaces (EAF) and chemical chlor-alkali processes that generate severe electrical noise and voltage flickers. Our OPT systems provide total galvanic isolation between high-voltage lines and sensitive SCADA networks, safeguarding metering electronics.
The continuous expansion of Turkey's State Railways (TCDD) high-speed rail corridors (Ankara-Istanbul, Ankara-Sivas, Ankara-İzmir) utilizes 25kV 50Hz single-phase AC traction power. Optical potential transformers offer ultra-fast transient detection and superior vibration immunity, ensuring continuous catenary voltage monitoring and uninterrupted high-speed transport.
Space constraints in major Turkish metropolitan centers demand compact, eco-friendly Gas-Insulated Switchgear (GIS) integrations. With no oil filling and lightweight structural assembly, our optical VT heads integrate effortlessly into compact SF6 or dry-air GIS bays without fire containment barriers or oil drainage pits.
A comprehensive technical comparison highlighting efficiency, safety, and digital readiness for modern substations.
| Parameter / Feature | Conventional Inductive VT / CVT | Custom Optical Potential Transformer (OPT) | Advantage for Turkish Power Grid |
|---|---|---|---|
| Measuring Principle | Electromagnetic / Capacitive divider | Electro-optic Pockels / Kerr optical modulation | Eliminates magnetic saturation completely |
| Frequency Bandwidth | Narrow (typically 50 Hz ± 5 Hz) | DC up to 500 kHz wideband | Accurate harmonic tracking for Solar & Wind plants |
| Dielectric Medium | Mineral oil or SF6 gas under pressure | Pure dry optical fiber & solid composite resin | 100% explosion-proof & environmentally safe |
| Substation Interconnection | Heavy multi-core copper control cables | Noise-immune multi-mode/single-mode fiber optic cable | Over 80% weight reduction; complete galvanic isolation |
| Digital Standard | Analog 100V / √3 secondary voltage | IEC 61850-9-2LE Sampled Value (SV) digital stream | Direct integration with modern digital protection relays |
| Dynamic Weight & Seismic | Heavy cast iron and porcelain body | Ultra-light silicone composite insulator | High seismic compliance (Turkish Fault Line Zones) |
Delivering high-reliability power equipment across 30+ countries, with dedicated engineering service for Turkey and surrounding markets.
Today, XINSANHUAN’s products are exported to more than 30 countries and regions worldwide. Its international footprint spans Europe, Central Asia, Southeast Asia, Africa, and Latin America, with successful projects completed in countries such as Russia, Kazakhstan, Uzbekistan, Kyrgyzstan, Ethiopia, Zambia, Tanzania, Mexico, Honduras, and many others. The company’s products are widely recognized for their excellent operational performance, high efficiency, durability, and adaptability to diverse climatic and grid conditions.
As a specialized manufacturer serving the Turkish market, we provide custom-tailored optical potential transformers, large-capacity power transformers, rectifier units, and earthing protection systems designed to satisfy Turkish standards (TSE) and international IEC norms. From initial engineering consultations in Istanbul and Ankara to factory acceptance testing (FAT) and expedited logistics via Mediterranean sea-freight corridors, we ensure seamless project execution.
Quality excellence and customer satisfaction remain the core values that guide every aspect of XINSANHUAN’s business operations. Through strict quality assurance, reliable delivery schedules, and comprehensive after-sales support, the company has earned the trust and long-term cooperation of customers around the world. Its commitment to providing dependable products and professional services has established a strong reputation within the global power equipment industry.
Every optical potential transformer and distribution unit undergoes exhaustive type testing—including partial discharge tests, lightning impulse withstand tests, temperature rise verifications, and optical signal attenuation analyses—ensuring uncompromised reliability across critical Turkish electrical grids.
Looking toward the future, Hanzhong Xinsanhuan Transformer Co., Ltd. will continue to uphold its philosophy of integrity, innovation, quality, and customer focus. By leveraging its strong technical expertise, advanced manufacturing capabilities, and global market experience, the company is committed to building long-term partnerships with customers worldwide and contributing to the development of safe, efficient, and sustainable power infrastructure. Together with its partners, XINSANHUAN strives to create greater value and shape a brighter future for the global energy industry.
Full spectrum high-voltage transformers, dry-type distribution units, neutral earthing systems, and special rectifier transformers engineered for Turkey and global markets.
Heavy-duty dry type power unit providing reliable indoor distribution for commercial complexes, data centers, and critical utility substations.
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Designed with high-conductivity copper coils, delivering optimized energy conservation and reduced operational costs across municipal networks.
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Encapsulated vacuum casting offering maintenance-free performance, high short-circuit resistance, and superior environmental safety.
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Essential high-voltage surge and insulation protection device for transformer neutral points during single-phase line grounding faults.
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Engineered for electrochemical electrolysis, metallurgical smelters, DC drive systems, and heavy industrial power rectifying applications.
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Features automatic On-Load Tap Changing (OLTC) mechanisms to regulate transmission grid voltage dynamically under fluctuating loads.
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Hermetically sealed eco-efficient design preventing oil oxidation, ideal for 20kV medium-voltage distribution networks and industrial substations.
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Ultra-high-voltage substation main power transformer built strictly in accordance with IEC and TEİAŞ standards for bulk transmission reliability.
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