LSF1 Series Residual Current Transformer(RCT)

Wenzhou Changjiu Technology Co., Ltd. is a professional China LSF1 Series Residual Current Transformer(RCT) manufacturer and supplier, known for its quality service. Adhering to the pursuit of perfect quality of products, so that our LSF1 Series Residual Current Transformer(RCT) have been satisfied by many customers. In order to ensure the quality and customer needs, we have cooperated with domestic power groups with strong production strength. We will strictly screen each supplier and send videos to customers to watch.

The main function of the LSF1 RCT is to detect the residual current in the circuit, and when the residual current exceeds a preset threshold, it is able to trigger a protective device (e.g., a residual current operated protector) to cut off the power supply, thus preventing electrocution accidents from occurring.

working principle

Zero sequence current detection: The working principle of RCT is similar to that of zero sequence current transformer, which is based on Kirchhoff's current law, i.e., the sum of currents flowing into a node at any moment in a closed circuit is equal to zero. Under normal conditions, the vector sum of the three-phase currents is zero, i.e. there is no residual current. However, when there is a leakage in the circuit, the vector sum of the three-phase currents is no longer zero, and the RCT is then able to detect this unbalanced residual current.

Signal conversion: The RCT converts the detected residual current signal into a measurable electrical signal (e.g. voltage signal), which is then passed to the protection device for processing.

Features and Advantages

High sensitivity: RCT has high sensitivity and can detect residual currents of mA level or even smaller.

Wide applicability: RCT has good applicability to different earthing systems (e.g. TT, IT, TN, etc.).

Safety and reliability: RCT can quickly cut off the power supply, effectively prevent the occurrence of electric shock accidents and improve the safety of the electrical system.

Application Areas

Electrical safety: RCT is widely used in a variety of electrical equipment and systems, such as low-voltage power distribution systems, motor control systems, household appliances, etc., to ensure electrical safety.

Industrial automation: In the field of industrial automation, RCT is also often used to monitor and control residual currents in circuits to ensure the normal operation of production equipment and personnel safety.

Precautions

When installing and using RCT, make sure it is wired correctly to avoid false operation or missed alarms.

Regularly check and maintain the RCT to ensure its stable and reliable performance.

When selecting RCT, it should be chosen according to the actual needs and circuit characteristics to ensure that it meets the requirements for use.