Zero Sequence Current Transformer and AC DC Leakage Sensor

As we mentioned in previous articles, in power production, in order to ensure the safe and economic operation of the power system, the operation of power equipment must be monitored and measured. However, the general measurement and protection devices cannot be directly connected to the high Voltage and large current equipment, and the high voltage and large current of the primary system need to be converted into low voltage and small current proportionally for use in measuring meters and protection devices. The equipment that performs these conversion tasks is for current, the most common is What we usually call a current transformer.

When it comes to leakage safety issues, our topic is inseparable from zero-sequence current transformers and leakage sensors. Zero-sequence current transformers are mainly used for protection and monitoring of current transformers. When there is an electric shock or leakage in the circuit, the transformer will output zero-sequence current for the second time, which makes the equipment on the secondary line protective action. , Such as the more common uncut power supply or alarm, etc.

For this product, it has the advantages of high sensitivity, reliable operation, and convenient installation. It is relatively widely used in daily life. It can not only be used for electromagnetic relay protection, but also can be used in electronic and microcomputer protection. At the same time, users can choose the connection method that suits them according to the operating mode of the system.

In contrast, more intelligent sensors are used for leakage current monitoring and warning, and we have to mention our ACDC leakage current sensor. The ACDC leakage current sensor is a device that converts the measured AC micro current and DC micro current into DC current, DC voltage and isolates and outputs standard analog signals or digital signals according to the working principle of transformer electromagnetic isolation and magnetic modulation.

Our ACDC leakage current sensor has the characteristics of high sensitivity, accurate measurement, small size and integration. The leakage sensor can be set separately for AC and DC leakage. When the set current is reached, an alarm signal is generated, and the switch control signal is output at the same time. The leakage sensor has a digital output function, which can read the current value of DC and AC. It is widely used for the charging of electric vehicles, electric motorcycles, and electric bicycles in public places, charging charges, and power safety management. And intelligent monitoring management system, intelligent alarm system and so on.

Regarding the current transformers and ACDC leakage current sensors that guarantee equipment and life safety, we not only live in the present, but also look to the future, and are committed to playing a more important role in protecting equipment and life safety accessories! Of course, if you want to know more about ACDC leakage sensors, you can visit our website: www.ivy-metering.com