Clamp Type Current Transformer CT for Accurate Cable and Copper Bar Current Monitoring

The clamp type current transformer CT is mainly designed for cable and copper bar current measurement in electrical main circuits. With a simple structure, reasonable design, and flexible application, this series provides a practical solution for power monitoring, energy management, and electrical protection systems. According to different copper bar specifications used in the main circuit, the product offers multiple through-hole options. The primary current range is within 1000A, and the rated secondary output current is 1A to 5A, with a 0–1V output option available. The series can meet different accuracy requirements, including Class 0.2, Class 0.5, and Class 1, and complies with GB/T20840.1.2 requirements.

Electrical Performance and Technical Specifications

The Clamp Type Current Transformer provides stable electrical performance for current signal measurement and monitoring applications.

Main specifications include:

• Primary current: 0–1000Arms 
• Secondary output: 1A–5A, with 0–1V or 0–1A output options 
• Accuracy class: Class 0.2, Class 0.5, Class 1 
• Ratio difference: ≤±0.1% 
• Phase difference: ≤±10 points 
• Working frequency: 50–400Hz 
• Highest equipment voltage: 0.66/0.72KVrms 
• Dielectric strength: 2.5KV/1mA/1min 
• Insulation resistance: DC500V/1000MΩ/min 
• Working temperature: -12℃ to +45℃ 
• Ambient humidity: ≤85% 

The product uses nickel or nanocrystalline iron core material, ABS shell with flame retardant grade 94-V0, PBT skeleton, and environment-friendly epoxy resin casting internal structure. The connection mode is terminal type/shielded strand 1.5m, and the construction plan adopts screw fixation.

Key Applications

The Clamp Type Current Transformer CT is suitable for various electrical monitoring and protection systems, including:

• Power monitoring 
• Energy consumption management 
• Intelligent power systems 
• Electromagnetic relay protection 
• Microcomputer protection 
• Motor protection 
• Rural power grid transformation 
• Substation transformation 
• Environmental protection detection 

Designed for cables and copper bars in main circuits, the product can provide current signal measurement for different electrical equipment. Users can select suitable specifications according to primary current requirements and connected monitoring or protection devices.

Product Structure and Features

Open and Close Structure

The product adopts an open and close structure, which is designed for convenient installation. It can be positioned around the applicable cable or copper bar according to the requirements of the electrical system.

Multiple through-hole options are available to match different conductor specifications, helping users select the appropriate model for their installation requirements.

Flexible Current Measurement

The series includes five specifications, with the primary current range within 1000A. The secondary output supports standard current signals, meeting the requirements of different monitoring and protection equipment.

The available accuracy classes allow users to choose a suitable configuration according to measurement requirements.

Materials and Internal Design

The transformer uses ABS flame-retardant housing, PBT skeleton, and nickel or nanocrystalline iron core material. The internal structure adopts environment-friendly epoxy resin casting to improve structural stability.

These specified materials provide the basic construction requirements for current measurement applications.

Installation and Connection

The Clamp Type Current Transformer can be installed according to the selected specification and electrical system requirements.

Installation steps include:

• Select the suitable model according to the primary current requirements. 
• Install the transformer around the applicable cable or copper bar. 
• Secure the product with the screw fixation method. 
• Connect the secondary output according to the requirements of the monitoring or protection equipment. 

During installation, users should confirm the current range, output signal, accuracy requirement, and connection method to ensure compatibility with the electrical system.

Conclusion

The clamp type current transformer CT is designed for cable and copper bar current monitoring applications with a flexible structure and multiple specification options. The product supports primary current measurement within 1000A and provides different accuracy classes and output options for electrical monitoring and protection systems.

With an open and close structure, ABS flame-retardant housing, PBT skeleton, nickel or nanocrystalline iron core, and epoxy resin casting internal structure, the product meets the requirements of power monitoring, energy management, intelligent power systems, and protection applications.

Explore the clamp type current transformer CT solution for cable and copper bar current measurement, electrical monitoring, and protection systems.

Contact us for detailed product specifications, installation information, and product selection support.