Intelligent Three Phase Current Transformer for Accurate and Reliable Power Monitoring

The Intelligent Three Phase Current Transformer (CT) from Jiangyin Yucheng Electric Co., Ltd. is engineered for precise three-phase current measurement and signal collection in modern electrical systems. Unlike conventional CTs, this series combines high-performance magnetic materials and advanced core-piercing design to ensure safe, reliable, and efficient current monitoring in commercial, industrial, and smart power applications.

Electrical Performance and Technical Specifications

To meet a variety of monitoring and protection needs, the Intelligent Three Phase CT offers:

• Rated input: 5A ~ 800A
• Rated output: 0–1VA or 0–100mA
• Accuracy: Ratio difference ≤ ±0.1%, Phase difference ≤ ±10 points
• Measuring range: 10%In ~ 130%In
• Working frequency: 50–400Hz
• Core materials: High magnetic conductivity nickel steel or nanocrystalline
• Shell material: ABS, flame retardant grade 94-V0
• Internal structure: Environment-friendly epoxy resin casting
• Connection: Terminal type with shielded strand 1.5m

These specifications ensure excellent linearity, high sensitivity, and strong anti-electromagnetic interference ability, supporting stable and accurate signal transmission to monitoring and protection devices.

Key Applications

The Intelligent Three Phase Current Transformer is ideal for:

• Electrical fire monitoring and fire leakage systems
• Current and voltage sensor equipment
• Electromagnetic relay and microcomputer protection
• Intelligent power management and environmental monitoring
• Small current grounding systems and industrial automation

It is particularly suitable for projects requiring high reliability, precise measurement, and integration with smart electrical systems.

Structural and Installation Advantages

Core Piercing Design
The transformer’s core-piercing structure allows installation without disconnecting existing wiring, minimizing downtime and operational disruption.

Robust Materials and Stability
Flame-retardant epoxy resin and high-permeability core materials ensure long-term durability, precise measurement, and strong resistance to interference.

Flexible Measurement Range
Supporting 5A to 800A, one CT model can accommodate multiple system configurations, from small circuits to main power lines.

Compact and Secure Installation
ABS shell and PBT skeleton offer mechanical stability, while screw fixation ensures secure mounting in electrical panels and enclosures.

Installation & Maintenance

Installation is simple:

• Open the core-piercing section and thread the conductor through the transformer window.
• Secure the transformer using the screw fixation points.
• Connect the secondary output (0–1VA or 0–100mA) to the monitoring or protection device.

Routine maintenance is minimal, typically limited to inspection of connections and fastening integrity.

Explore Intelligent Three Phase Current Transformer solutions for retrofit-friendly, high-precision current monitoring applications. 

Contact us for detailed specifications, installation guidance, or customization support.