Current Transformers Wholesale

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CT Current Transformers Manufacturers

Current transformers mainly include high-precision transformers, anti-DC transformers, and high linearity transformers, leakage protection transformers, open-close current transformers, zero sequence/residual current transformers, and wide-range metering current transformers.

1. High-precision transformers with 0.01S, 0.005, 0.002S, or higher precision levels, are suitable for normal temperature, high temperature (+85 degrees), and low temperature (-40 degrees) conditions, the basic measurement error Unchanged, suitable for electric energy measurement in different temperature regions, such as northeast region, south region, etc. The change in the measurement error of the current transformer caused by the self-heating influence is zero. And can be customized according to customer needs.

2. The Anti-DC transformer is mainly used to accurately convert the AC current signal or the half-wave rectified DC current signal into a weak current signal.

3. High linearity transformers are used in single-phase and three-phase power supply current sampling devices, with a wide linear range, high output current accuracy and good consistency.

4. Leakage protection transformers are mainly used for residual leakage circuit breakers, residual current electrical fire monitoring detectors, leakage protection switches (RCCB, RCBO, MCB, MCCB) and so on.

5. The open-close current transformer adopts an open magnetic core structure, which can be easily installed and removed without disconnecting the primary cable under test and is easy to operate. It is mainly used for current measurement, monitoring and protection of electrical lines and equipment, and communication base station towers. Power monitoring, etc.

6. Zero sequence/residual current transformers are mainly used for residual leakage circuit breakers, residual current electrical fire monitoring detectors, leakage protection switches (RCCB, RCBO, MCB, MCCB) and so on.

7. Wide-range metering current transformers are mainly used for energy metering in intelligent molded case circuit breakers.

Zhejiang Enhong Electronics Co., Ltd as professional China Current Transformers Manufacturers and CT Current Transformers Factory, offer wholesale CT Current Transformers for sale online. The application fields of our products are very wide, welcome to choose us.
// About Enhong

What We
Serve To Industry

Zhejiang Enhong Electronics Co., Ltd.

Formerly known as Zhejiang Enhong Electronics Co., Ltd., it is a

China high-tech magnetic cores, transformers, and inductance products manufacturer and amorphous nanocrystalline core transformer factory

, with independent core technology. We are very professional Current Transformer manufacturer.Its annual sales volume is nearly 40 million. Its service customers include China State Grid, China Southern Power Grid, German Volkswagen, Schneider Electric, Siemens, ABB, Schaffner, Panasonic and other well-known enterprises.


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  • Environmental Management System
  • Quality Management System
  • NSF

Current Transformer Industry Knowledge Extension

What is the function of a current transformer?

A current transformer (CT) is a type of instrument transformer that is used to measure electrical currents. Its primary function is to isolate the measurement circuit from the high voltage and current levels of the electrical system being monitored, thus providing a safe and convenient means of monitoring electrical power systems.

The CT works by wrapping a number of turns of secondary wire around the conductor carrying the primary current. When the primary current flows through the conductor, a magnetic field is generated which induces a proportional current in the secondary winding of the CT. This secondary current is then used to drive a meter or other measuring device, providing a proportional representation of the primary current.

CTs are commonly used in a variety of applications, including monitoring power consumption, detecting overloads and faults, and providing input signals for protection and control systems. They play a critical role in ensuring the safe and reliable operation of electrical power systems.

What are current transformers used for?

Current transformers (CTs) are used in a variety of applications, including:

Electrical power systems: CTs are commonly used in electrical power systems for monitoring, protection, and control purposes. They can be used to measure the current flowing in high-voltage circuits and to monitor the power flow in the system. CTs are also used to detect fault conditions, such as short circuits, and to trigger protective devices, such as circuit breakers, to isolate the fault.

Industrial processes: CTs are used in industries such as oil and gas, renewable energy, and manufacturing, to measure and monitor the current in electrical systems and machines. They are used to measure the current in motors, generators, and other electrical equipment, and to provide input to control systems to optimize performance and efficiency.

Energy metering: CTs are used in energy metering applications to measure the amount of electrical energy used by homes and businesses. The CTs are installed in the electrical distribution system and provide input to energy meters, which calculate and display the energy consumption.

Research and Development: CTs are used in research and development applications, such as laboratory testing, to measure the current in electrical circuits and to evaluate the performance of electrical equipment.

In summary, CTs are widely used in electrical engineering and industry and are an essential tool for monitoring, protection, and control of electrical systems and machines.