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M-bus Current Sensor

Pulished on Jan. 12, 2022

Small power equipment has incorporated more and more new technologies. For example, switching power supply, hard switching, soft switching, voltage stabilization, linear feedback voltage stabilization, magnetic amplifier technology, numerical control voltage regulation, PWM, SPWM, electromagnetic compatibility, etc. The actual demand directly promotes the continuous development and progress of power supply technology. In order to automatically detect and display current, and have automatic protection function and more advanced intelligent control when dangerous situations such as overcurrent and overvoltage occur, it has sensor detection, sensor sampling, The power supply technology of sensor protection has gradually become a trend, and the sensors that detect current or voltage have emerged as the times require and are gradually being favored by the majority of power supply designers.


Current sensor is a detection device that can feel the information of the measured current, and can transform the detected and felt information according to certain rules into electrical signals that meet certain standards or other required forms of information output to meet Information transmission, processing, storage, display, recording and control requirements. Current sensors, also called magnetic sensors, can be used in household appliances, smart grids, electric vehicles, wind power generation, etc. Current sensors, as a power measurement element, play an important role in monitoring the charging process and ensuring charging safety.

In the process that the charging pile converts AC power into a standard form of DC or AC current and delivers it to the car battery, the normal size of the current in the conversion system at all levels is a necessary condition to ensure the safe and smooth progress of the charging process. The current sensor in the charging pile can accurately measure the current in the key system links, and timely find and report internal abnormalities, such as leakage, so as to avoid safety accidents. In addition, another function of the current sensor is to accurately measure the charging capacity of the car for display for user reference and calculation of charging charges.

IVY introduced a new current sensor. The split core current sensor uses high-permeability ferrite as the magnetic material. It has high accuracy, stable performance, small size, easy installation, and no rust at the opening. It is suitable for measuring and monitoring current and temperature, with M-BUS communication function. Its split core design structure can be quickly loaded and unloaded under the condition of uninterrupted power, which greatly improves the construction efficiency. Compared with other ordinary split core current transformers, it can directly read the current value without going through the secondary transformation ratio. With M-BUS communication, the over-current alarm value can be set and the alarm signal can be output.

The functional characteristics are as follows:

The inside of this product is sealed with glue and can be exposed to outdoor use

The upper and lower phases of this product are connected by hinges to ensure the number of opening and closing

The closing method of this product adopts buckle connection, no tools are needed for quick disassembly and assembly

The iron core contact surface adopts mirror surface processing to ensure that the contact surface of the open-close transformer is closer and will not rust

The detectable tun current is less than 200mA, and the accuracy level can be customized: level 1

With M-BUS communication function, current and temperature values can be read


Current sensors are widely used in household appliances, smart grids, electric vehicles, wind power and other fields. If you want to know more about M-bus current sensors, please visit IVY official website: https://www.ivy-metering.com/


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