High-Precision Through-Type Current Transformers to Power Smarter, More Compact Switchgear Systems
Zhuhai Comking Electric Co., Ltd., a leading global manufacturer of power distribution equipment, has unveiled its upgraded Through-Type Current Transformer Series, including models such as the LDZC-Φ57/Φ104H and LZCT-Φ76-10213065. Designed for 10kV–35kV AC power systems, these compact, high-accuracy transformers are engineered specifically for ring main units (RMUs), switchgear, and intelligent energy management applications—delivering exceptional performance in space-constrained, modern electrical installations.
Small Size Electricity Current Transformer | Compact Design Meets Easy Installation
As switchgear cabinets grow increasingly compact, Comking’s through-type current transformers offer an ideal solution. Built with vacuum-cast epoxy resin and featuring a seamless, maintenance-free structure, they require no primary wiring—simply pass the primary conductor through the central bore for quick, tool-free installation. This significantly reduces on-site labor time and complexity.
The LDZC-Φ57/Φ104H model supports modular height customization (base height 40mm, extendable in 40mm increments), while the LZCT-Φ76-10213065 offers fixed dimensions (130×65mm) with flexible height options (base 45mm, extendable in 35mm steps)—ensuring perfect fit for diverse cabinet layouts worldwide.
Dual-Core Precision: Accurate Metering + Reliable Protection
Each transformer features a dual-core design to serve dual functions simultaneously:
The metering core uses advanced high-permeability magnetic material to achieve class 0.2S or 0.5 accuracy with minimal phase error—ideal for revenue-grade energy metering and power quality monitoring.
The protection core employs premium silicon steel laminations, delivering robust saturation characteristics and supporting protection classes such as 10P10, 10P15, and 10P20 for dependable fault detection.
Rated primary currents range from 100A to 600A, with secondary outputs of 1A or 5A. Multiple burden combinations (e.g., 0.2S/2.5VA + 10P10/5VA) allow seamless integration with smart meters, protective relays, and IoT-enabled substation controllers.
Rugged, Maintenance-Free Performance in Harsh Environments
Fully encapsulated in flame-retardant, vacuum-cast epoxy resin and housed in durable engineering plastic, Comking’s transformers meet IP54+ protection standards. They resist moisture, dust, and chemical corrosion—making them suitable for coastal, industrial, and high-altitude deployments. All models comply with IEC 61869 and GB/T 20840 standards and have passed rigorous type tests by national certification bodies.
10kV, 20KV, 35KV Current Transformer Supplier
Proven Globally, Customized Locally
Comking’s through-type CTs are already deployed in mobile substations across Europe, smart RMUs in Southeast Asia, and integrated source-grid-load-storage projects in China. The company offers end-to-end support—from technical consultation and CAD drawings to OEM/ODM services—and can rapidly prototype non-standard configurations.
About Zhuhai Comking Electric Co., Ltd.
Founded in Zhuhai, China—Voltage/Current Transformer Supplier—Comking Electric specializes in medium- and low-voltage power distribution components, including current/voltage transformers, ring main units, and digital energy solutions. With products exported to over 60 countries, Comking is committed to delivering safe, intelligent, and sustainable power infrastructure for a smarter grid.