Accurate Measurement - Current and Voltage Transformers for Modern Grids
The safe and efficient operation of any electrical system depends on accurate measurement and reliable protection. Instrument transformers—specifically Current Transformers (CTs) and Voltage Transformers (VTs)—are the unsung heroes that provide scaled-down, isolated signals of high voltage and current to metering and protection devices. Zhuhai Comking Electric, as a seasoned 35kV /10kV current transformer supplier and 3/ 6/10kV voltage transformer supplier, delivers a comprehensive range of precision instrument transformers for all voltage levels.
Our current transformers are available in various constructions, including the robust Pillar structure Pollution and moisture resistant design for outdoor applications. This design features porcelain or composite polymer housings with extended creepage distances, making them ideal for service in polluted or humid coastal environments. For switchgear applications, we offer ring-type and bushing-type CTs that can be easily installed around the primary conductor. Accuracy is paramount, and our CTs are manufactured to meet stringent accuracy classes (e.g., 0.2, 0.5, 5P, 10P) for both measurement and protection cores, ensuring precise energy billing and reliable circuit protection.
Similarly, our voltage transformers are engineered for stability and precision. We offer inductive VTs for a wide range of applications, from 3/ 6/10kV voltage transformer supplier services for medium voltage switchgear to 20kV/35kV voltage transformer on sale for higher voltage substations. For enhanced safety and miniaturization, we also provide capacitor voltage transformers (CVTs) and optical-based sensors. A key product is our Moisture-proof Three-phase integrated type VT, which combines three single-phase units into a compact, sealed assembly, offering excellent resistance to environmental factors and saving space in compact substations or ring main units. Whether for revenue metering, system monitoring, or relay protection, Comking's instrument transformers provide the critical link between the high-power primary circuit and the low-voltage secondary control system, ensuring the entire network operates safely, efficiently, and intelligently.