Vertical Square Hole Transformer

Our low voltage current transformer is a precision instrument designed to safely and accurately convert high primary currents into manageable secondary levels, enabling reliable monitoring, metering, and energy management in electrical systems. Engineered for durability and performance across extreme conditions—from -40°C to +110°C—this window-type Current Transformer ensures stable operation in both industrial and commercial environments. Ideal for power supply system applications requiring 0.2 accuracy class measurement, it supports integration with high-impedance relay protection devices, enhancing safety and operational efficiency. Key features include a robust design that accommodates various installation methods, including through-core (open-window) and direct-wiring configurations. Available models such as 60III, 80III, 80x50III, 100III, and 120x50III offer flexibility for different current ratings and spatial constraints. Each model builds upon earlier generations (I and II types), incorporating improved insulation, reduced core losses, and enhanced thermal stability for long-term reliability. The device delivers real-time current data essential for load analysis, power quality assessment, and predictive maintenance strategies. Its ability to interface seamlessly with digital meters, SCADA systems, and energy management platforms makes it an ideal choice for smart grid implementations. Whether used in manufacturing facilities, commercial buildings, or utility substations, this current transformer supports accurate billing, fault detection, and system optimization by providing consistent, calibrated output under varying load conditions. Commonly deployed in three-phase AC networks, it serves as a critical component in energy auditing, demand-side management, and compliance with international electrical standards like IEC 61869 and IEEE C57.13. With options for custom specifications—including tailored rated current ratios, secondary burden values, and environmental protections—it meets diverse project requirements without compromising on precision or safety. Users appreciate its ease of installation, minimal maintenance needs, and consistent performance over extended periods. Many report significant improvements in energy tracking accuracy and reduced downtime due to early fault detection enabled by continuous current monitoring. The compact form factor and modular design also simplify retrofitting into existing infrastructure. For optimal results, specify the exact model number, rated current transformation ratio (e.g., 100/5A), accuracy class (typically 0.2S or 0.5), and secondary rated load (in VA) during procurement. Customization is available for unique application scenarios such as high-frequency environments, corrosive atmospheres, or specialized control circuits. Always ensure compatibility with connected instrumentation to maintain system integrity and maximize return on investment. Frequently asked questions often relate to proper sizing based on maximum load current, selection of appropriate burden resistors, and ensuring correct polarity when connecting to meters or relays. Proper installation following manufacturer guidelines ensures compliance with international electrical codes and maximizes the lifespan of the unit.