Characteristics and Applications of Leakage Current Sensors

The leakage current sensor is an electric safety protection device used to detect poor grounding or leakage in electrical equipment or lines. It is mainly composed of a leakage transformer, a circuit board, etc. When a leakage problem is detected in the equipment or line, the leakage current sensor will sound an alarm or directly cut off the power supply to ensure personal safety and the normal operation of the equipment.

1. Working principle of leakage current sensor

The working principle of the leakage current sensor is based on the principle of electromagnetic induction. The leakage current transformer is used to convert the leakage current into a low-voltage signal proportional to it, and then the low-voltage signal is converted into a standardized DC signal or AC signal through amplification, processing, and change circuits, and then supplied to relays or other adaptive loads.

2. Characteristics of leakage current sensor

Real-time monitoring: The leakage current sensor can monitor the leakage current in the circuit in real time. It can detect leakage in time and ensure that necessary measures are taken as soon as possible to avoid potential risks of electric shock and fire.

High-precision detection: This sensor can provide high-precision leakage current detection and can accurately distinguish the difference between normal working current and leakage current.

Alarm function: When the leakage current exceeds the preset safety threshold, the AC leakage current sensor will send an alarm signal to notify the user of potential electrical problems and prompt them to take appropriate measures.

Safety protection: The leakage current sensor can be used in conjunction with circuit breakers, switches and other equipment to provide leakage protection. When a leakage is detected, it can quickly cut off the power supply to prevent the current from passing through the human body and causing danger.

Wide application: Leakage current sensors are widely used in many fields such as residential, commercial buildings and industrial sites. Whether it is household electricity or industrial equipment, this sensor can be used for leakage detection and protection.

IVY series B-type leakage sensor takes into account both B-type and DC6mA residual current detection, digital output/open collector outputs alarm signals, and integrates self-test zeroing. It can meet the leakage protection needs of application scenarios such as AC charging piles, portable charging piles, photovoltaic combiner boxes, photovoltaic inverters, industrial equipment, etc. It has the advantages of low power consumption, high precision, fast action response, and isolation detection.