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Colombia's power sector is undergoing a rapid technological modernization driven by the National Mining and Energy Planning Unit (UPME - Unidad de Planeación Minero Energética), the Energy and Gas Regulatory Commission (CREG), and grid operator XM. As the country expands its high-voltage transmission backbones across 115 kV, 230 kV, and 500 kV corridors, Capacitive Potential Transformers (CVTs / CCVTs) have emerged as indispensable equipment for precise revenue metering, protective relaying, and high-frequency Power Line Carrier (PLC) telecommunication.
Over US$1.8 billion is invested in high-voltage interconnectors linking central industrial hubs (Bogotá, Medellín, Cali) to northern solar/wind corridors in La Guajira, requiring high-reliability 115kV-500kV CVTs with low dielectric dissipation factors.
Every capacitive potential transformer deployed in Colombian territory must strictly comply with RETIE (Reglamento Técnico de Instalaciones Eléctricas) certification, guaranteeing safety, insulation resilience against tropical humidity, and arc flash containment.
With major load centers located above 2,600 meters (Bogotá savanna) and along the active Pacific Rim fault lines, CVTs require customized external creepage distances (>31mm/kV) and IEEE 693 / NSR-10 seismic dampening.
Colombia's energy transition is centered in the northern departments of La Guajira and Cesar, where world-class wind capacity and solar irradiance levels generate gigawatts of non-conventional renewable energy (FNCER). Connecting these fluctuating power sources into the 230kV / 500kV National Interconnected System (SIN) demands capacitive potential transformers equipped with ultra-fast transient response, anti-ferroresonance damping circuits, and broadband carrier coupling capacities for teleprotection.
Our CVTs are manufactured with hermetically sealed stainless steel bellows and superior silicone composite or porcelain insulators resistant to coastal saline mist and desert dust storm conditions prevalent in northern Colombia.
In Colombia's heavy industrial strongholds—including the coal mining basins of El Cerrejón and Drummond, the ferronickel plants of Cerro Matoso in Córdoba, and Ecopetrol's oil refineries in Barrancabermeja and Meta—reliable voltage measurement is essential for process continuity and high-voltage motor protection.
Capacitive potential transformers mitigate high harmonics, withstand rapid load swings, and provide seamless interfacing with numerical SCADA protection relays, preventing catastrophic phase loss or insulation degradation in mission-critical processing plants.
Hanzhong Xinsanhuan Transformer Co., Ltd. is a professional transformer manufacturer located in Hanzhong City, Shaanxi Province, China—a renowned historical and cultural city known for its strategic geographical location at the heart of the country. Since its establishment, the company has been dedicated to the research, development, design, manufacturing, and service of high-quality power transmission and distribution equipment, providing reliable solutions to customers across domestic and international markets.
The company specializes in the production of power transformers up to 110kV, rectifier transformers, amorphous alloy transformers, oil-immersed distribution transformers, dry-type transformers, compact prefabricated substations, and other customized transformer solutions. With years of industry experience and continuous technological innovation, XINSANHUAN has developed a comprehensive product portfolio capable of meeting the diverse requirements of power utilities, industrial facilities, renewable energy projects, infrastructure developments, and commercial applications.
To ensure the highest standards of product quality and performance, the company has invested heavily in advanced manufacturing equipment, modern production lines, and comprehensive testing facilities. Supported by a highly qualified engineering and technical team, XINSANHUAN maintains strict quality control throughout every stage of production, from design and raw material procurement to manufacturing, testing, and final delivery. The company’s robust research and development capabilities enable it to continuously improve product efficiency, reliability, and environmental performance in response to evolving market demands.
Backing major utility tenders in Latin America, our products are tailored for cross-continental freight via Buenaventura and Cartagena ports. We offer comprehensive engineering support, factory acceptance testing (FAT) witnessed by international inspectors, and customized tropicalized packaging.
Since 2006, Hanzhong Xinsanhuan Transformer Co., Ltd. has established a comprehensive management system and obtained a series of internationally recognized certifications, including ISO 9001 Quality Management System Certification, ISO 14001 Environmental Management System Certification, and ISO 45001 Occupational Health and Safety Management System Certification. The company has also received Energy-Saving Product Certification and has been honored with the title of Green Factory, reflecting its commitment to sustainable manufacturing practices and environmental responsibility.
As a recognized High-Tech Enterprise, XINSANHUAN places strong emphasis on technological advancement and intellectual property development. The company has obtained numerous national patents covering product design, manufacturing processes, and technical innovations. In addition, its products have achieved CE certification, enabling compliance with European market requirements and facilitating exports to a broader international customer base. The company also holds independent import and export rights, ensuring efficient global trade operations and responsive customer service.
| System Voltage (kV) | Nominal Altitude Rating | Accuracy Classes (Metering/Relaying) | Carrier Frequency Range (PLC) | Ferroresonance Damping | Applicable Colombian Standard |
|---|---|---|---|---|---|
| 115 kV (Regional SIN) | Up to 3,000 m.a.s.l. (Bogotá) | 0.2, 0.5, 3P, 5P | 30 kHz – 500 kHz | Passive parallel LC damping unit | RETIE / IEC 61869-5 / IEEE C57.13 |
| 230 kV (Core Interconnector) | Up to 2,800 m.a.s.l. (Cundinamarca) | 0.2S, 0.5, 3P, 5P | 30 kHz – 500 kHz | Active electronic/magnetic hybrid | RETIE / UPME Substation Norms |
| 500 kV (Trunk Transmission) | Up to 2,400 m.a.s.l. (Inter-regional) | 0.2, 0.2S, 3P | 40 kHz – 500 kHz | High-capacity saturable reactor circuit | ISA / XM Transmission Grid Code |
| 34.5 kV / 35 kV (Renewable Array) | Up to 3,500 m.a.s.l. (Andean Highlands) | 0.2, 0.5, 1.0 | Internal Optical / Digital Port | Built-in non-linear resistor suppressors | RETIE / CREG Resolution 038 |
Above 115 kV, Capacitive Potential Transformers (CVTs) offer substantial cost advantages over electromagnetic IVTs, while doubling as coupling capacitors for high-frequency Power Line Carrier (PLC) communications and line protection signaling without extra equipment.
For installations above 1,000 meters (such as Bogotá at 2,640m), our engineers increase the external creepage distance, enhance lightning impulse withstand voltages (BIL), and adapt the internal insulation geometry according to IEC 60071-2 altitude correction coefficients.
We ship directly to Port of Buenaventura (Pacific access for Bogotá, Cali, Medellín) and Port of Cartagena / Barranquilla (Atlantic access for northern projects), fully containerized in seaworthy, nitrogen-pressurized or shock-monitored heavy timber crates.
Our intermediate voltage transformers are built with state-of-the-art damping circuits—integrating tuned inductive-resistive networks across the secondary intermediate winding—ensuring instantaneous suppression of transient ferroresonant oscillations during line switching.
