Split Core Current Transformer Cabinets | 0.2% Accuracy

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High-Performance Split Core Current Transformer for Reliable Energy Monitoring in Global Power Systems

High-Performance Split Core Current Transformer for Reliable Energy Monitoring in Global Power Systems

Our split core current transformer is engineered for electrical professionals who demand accuracy, safety, and ease of installation in medium and low-voltage networks. Designed to meet the rigorous demands of the power distribution, industrial control, photovoltaic, and railway sectors, this current transformer enables non-invasive retrofitting onto existing cables or busbars without interrupting service. With a rated accuracy class of 0.5 and a measurement range from 50A to 600A, our CTs deliver ±0.5% linearity, ensuring precise metering for energy audits, sub-metering, and load management. Featuring a split-core design that opens for quick snap-on installation, it reduces downtime by up to 70% compared to closed-core alternatives—a critical advantage for facilities in the petroleum, chemical, and metallurgical industries operating around the clock.
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Case Study

Retrofitting a 250kW Solar Plant in Germany

A major commercial photovoltaic plant operator situated in picturesque Bavaria, Germany, faced a demanding technical challenge: they urgently needed to integrate revenue-grade energy monitoring systems without initiating a costly power shutdown across their active 250kW solar array. To overcome this hurdle, our specialized split core current transformer, model SCCT-300A/5A, was swiftly clipped directly onto the primary main electrical feeders with absolute zero interruption to ongoing clean energy generation. The stringent 0.5 class measurement accuracy inherent to our CTs guaranteed seamless technical alignment with regional feed-in tariff billing regulations. Operating continuously over a six-month monitoring period, the precision data provided by these CTs successfully identified a hidden 3 percent power underperformance anomaly occurring within a specific inverter string.

Upgrading a Textile Factory in Bangladesh

A large-scale industrial textile manufacturing facility located in Dhaka, Bangladesh, struggled persistently with unreliable energy monitoring and severe data blind spots distributed across 40 complex low-voltage electrical distribution boards. Seeking a rapid modernization solution that would avoid lengthy factory shutdowns, the facility management team procured our advanced 200A split core current transformers to execute a comprehensive electrical retrofit. Leveraging the ingenious snap-on design of our hardware, the entire facility-wide upgrade was fully completed in just two remarkable days, bypassing the week-long downtime typically required by conventional closed-core current transformers. The resulting electrical data visibility dramatically surged from a deficient 60 percent up to an exceptional 92 percent coverage rate.

Smart Grid Integration for a Utility in Australia

A progressive regional electrical utility operating in Queensland, Australia, initiated a widespread smart grid infrastructure modernization project aimed at deploying advanced digital smart metering across 5,000 diverse residential and commercial client sites. To streamline field deployment, our high-performance split core current transformers were selected because their user-friendly mechanical architecture enabled completely safe, rapid on-site installation by a streamlined two-person technician crew in under 15 minutes per location. These innovative CTs featured native 0.333V secondary voltage outputs designed for direct, seamless connection to modern IoT-based energy data loggers. Following the successful conclusion of a rigorous one-year pilot program, the utility officially recorded a remarkable 2.5 percent net reduction in regional distribution line losses alongside significantly faster incident response times during grid faults.

Related products

For over thirty years, ZHNYU Electric has specialized in the design and manufacture of low-voltage electrical components, including our advanced split core current transformer. This product line exemplifies our commitment to precision, safety, and adaptability in energy sensing technology. The split core current transformer is fundamental in modern electrical networks, enabling operators to measure alternating current (AC) without disconnecting the primary conductor—a key advantage over traditional closed-core transformers. By simply opening the CT and clipping it around a cable or busbar, installation becomes a task of minutes, not hours. This capability is particularly valuable when upgrading existing infrastructure in power plants, industrial plants, commercial buildings, and renewable energy installations.

Frequently Asked Questions

What is the typical installation time for a split core current transformer?

Installation time depends on the model and access. For a standard cable installation, a trained technician can complete it in 10-15 minutes. This includes opening the CT, positioning it around the conductor, and securing the locking mechanism. No power shutdown is required, which saves scheduling time.
We offer 0.5 accuracy class for most standard models. This means the transformer will have a ratio error of less than 0.5% at the rated current. For billing purposes, a class 0.5 is accepted by most utilities.
Yes, we provide models designed for metering (0.5 accuracy) and protection (5P10 or 5P20). For protection applications, the CT must saturate appropriately under fault currents. Please specify your requirement when ordering.
Our CTs are designed for low-voltage systems up to 0.72kV. The primary current ranges from 50A to 600A. For higher currents, we can customize. The secondary output is typically 5A or 1A, or a voltage output of 333mV.

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Customer Testimonials

James Wilson
Exceptional Accuracy and Easy Installation

We have been using ZHNYU split core current transformers for our energy audit projects in the Middle East. The they are not only accurate but also robust for outdoor installation. The swing-open mechanism is user-friendly, allowing our team to place them on live cables quickly. Since switching, our clients noticed a 15% reduction in billing disputes. Highly recommended for accurate sub-metering.

Nguyen Thi Mai
Superior for Solar Monitoring

As an independent solar installer across Southeast Asia, I rely on ZHNYU split core CTs to monitor inverter outputs. The 333mV output integrates perfectly with our smart loggers. We installed over 200 units in the past year with zero failures. The accuracy class ensures precise performance, and the waterproof casing is ideal for tropical climates. Great value for money.

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34 Years of Manufacturing Excellence and Innovation

34 Years of Manufacturing Excellence and Innovation

Founded back in 1992, ZHNYU Electric has accumulated an impressive legacy spanning 34 years of deep engineering expertise dedicated entirely to the continuous development and refinement of advanced current sensing technologies. Our enduring longevity within the fiercely competitive electrical manufacturing sector serves as a definitive testament to our corporate adaptability, technological foresight, and unwavering commitment to uncompromised product reliability. Throughout these decades of continuous operational evolution, our engineering teams have systematically refined the structural design of our split core current transformer series to achieve ultra-compact physical dimensions while simultaneously maximizing electrical withstand voltage capabilities and creepage safety distances.
Certification Compliance and Global Quality Standards

Certification Compliance and Global Quality Standards

Our advanced split core current transformers are meticulously fabricated in strict adherence to the most stringent international electrical manufacturing standards, proudly carrying formal compliance certifications including European CE safety marking, ISO9001 quality management system certification, and environmental RoHS compliance directives. In complete alignment with professional utility requirements, our current transformer designs fully comply with IEC 60044-1 international standards governing instrument transformers, comprehensively addressing both high-precision measuring classes and heavy-duty protective types. Our primary manufacturing facility undergoes rigorous, comprehensive third-party audits on an annual basis, while our internal quality control protocols actively monitor and inspect every individual stage of the manufacturing cycle.