How much do you know about three-phase four-wire charge-control Smart Energy Meters?

As a Din Rail Meter Manufacturer, share with you.

Din Rail Meter is a large-scale integrated circuit, which uses a high-precision dedicated chip for energy measurement. The communication capability and reliability of its carrier module have reached a wide range of practical applications. Digital sampling processing technology and SMT technology are applied. Meters with modern advanced level designed and manufactured by users' actual power consumption conditions.

Din Rail Meter

1. Technical characteristics

Built-in high-speed and high-accuracy AC voltage and current acquisition module, high sampling accuracy, real-time and accurate energy measurement;

It can measure the combined active power, positive and negative active power and demand, combined reactive power, four-quadrant reactive power, and has functions such as 485 communication and infrared communication;

Excellent electromagnetic compatibility, can withstand the interference of high-voltage spikes, strong magnetic fields, strong static electricity, lightning surges, and has strong temperature self-adaptability;

Three-phase power supply (that is, line power supply mode). When any one of the three-phase three-wire or any two-phase four-phase power is cut off, the energy meter can still work normally;

In the case of loss of AC power, the energy meter can maintain data and keep the clock chip working;

Low power consumption.

When the smart meter works, the voltage and current are sampled by the sampling circuit, sent to a dedicated power chip for processing, and converted into a digital signal to the CPU for calculation. Due to the use of a dedicated power processing chip, the voltage and current sampling resolution is greatly improved, and there is enough time to measure the power data more accurately, thereby significantly improving the measurement accuracy of the energy meter.

The CPU is used for time-sharing charging and processing various input and output data. The data of the dedicated power chip is read out through the serial interface, and the time-sharing power measurement and maximum demand measurement functions are completed according to the preset time period. Various data are transmitted through infrared, 485 interface and carrier interface, and the monitoring of operating parameters is completed, and various data are recorded and stored.

The three-phase four-wire charge-control intelligent electric energy meter phase loss recording function is introduced as follows:

1) Phase failure judgment method

When the voltage of a phase is lower than the upper limit NNN.NV of the phase failure event voltage, and the current is less than the upper limit NN.NNNN A of the phase failure event current, and the duration meets the phase failure event determination delay time NN seconds, the phase Judged as a phase failure.

Our company also has Kema Meter on sale, welcome to consult.