Which is a good multifunctional energy meter

Centralized multi-user smart meter

An intelligent electricity meter suitable for monitoring the electricity consumption and parameters of base station AC distribution systems. The meter consists of a voltage/current measurement unit (including various transformers and transmitters), an electricity consumption measurement unit, a data processing unit, a communication unit, etc. It has functions such as real-time electricity measurement, abnormal power supply quality alarm, information storage and processing, and information exchange.

working power supply

1) Smart meters should be powered by -48V DC or 220V AC. Base stations with DC power supply conditions should first choose DC power supply, and connect the power supply from the secondary power supply (battery power supply) end of the switch power supply.

2) Working voltage range

DC: -40V to -60V (-48V system)

Communication: 220V, -40% to+20%

Centralized multi-user smart meter

Product Features
DDSD1352 and DTSD1352 multi circuit rail type multifunctional energy meters can monitor the AC power consumption and electrical parameters of four three-phase circuits (compatible with single-phase circuit metering function, can be used as single-phase four circuit meters). The milliampere current transformer of the energy meter is external and installed on the original power supply line cable. In general, the metering distribution scheme is as follows: three-phase metering for the mains input branch, oil engine input branch, and switch power supply branch, with reserved circuits (which can be used for air conditioning or energy-saving equipment). The product has the following characteristics:

• The auxiliary power supply supports DC 48V or AC 85V~220V;

• The basic current In is 10A, and the high current Imax is 100A. Among them, the mains input branch and oil engine input branch are equipped with current transformers of 100A, and the switch power supply branch and reserved branch are equipped with current transformers of 50A.

• Capable of monitoring the voltage, frequency, current, active power, reactive power, power factor, active and reactive power of the power supply system;

• It has one DO interface (for fixed oil engines) and six DI interfaces (for lightning protection air circuit disconnection alarm, lightning arrester fault alarm, mains power supply status, mains power switch status, oil engine circuit power supply status, oil engine circuit switch status);

• Equipped with alarm functions for meter faults, power supply system voltage/frequency exceeding limits, mains phase loss, and mains power outages;

• It has historical storage function and meets the relevant requirements of Q/ZTT 1017-2015 "Technical Specification for Base Station AC Smart Meter";

• Adopting a fully Chinese LCD display interface.