Single-phase electricity meter SDM120TM – 40mA Modbus and 1 openable current transformer

Single-phase electricity meter SDM120TM – 40mA Modbus and 1 openable current transformer

Single-phase electricity meter SDM120TM – 40mA Modbus is a modern measuring device designed for accurate bidirectional measurement of electrical energy. Equipped with RS485 Modbus communication, it allows easy integration into various energy monitoring and control systems. The nominal current of the electricity meter is 40mA, and the included openable current transformer (CT) has a nominal value of 120A/40mA, which provides flexibility in various applications.

This meter measures a variety of electrical parameters, including active energy (kWh), reactive energy (kVArh), active power (kW), reactive power (kVAr), apparent power (kVA), power factor (PF), frequency (Hz), voltage (V) and current (A). Its compact design and easy installation make it suitable for various applications, such as residential, commercial and industrial installations. The openable current transformer facilitates installation without the need to interrupt the power supply.

Precise bidirectional measurement and communication of single-phase electricity meter SDM120TM

SDM120TM – 40mA Modbus offers high accuracy in measuring electrical energy in both directions, which is especially useful in systems with renewable energy sources, such as solar panels. RS485 Modbus communication allows remote monitoring and control of the meter, easily integrating it into existing energy management systems. This provides timely and accurate information on energy consumption and production, helping to optimize energy costs and increase efficiency.

Easy installation and flexibility of single-phase SDM120TM

The included 120A/40mA open-ended current transformer simplifies installation by allowing installation without interrupting the power supply. This is especially useful in environments where minimizing downtime is critical. The meter’s compact size and DIN rail mounting capability make it suitable for a variety of applications, including those in confined spaces. The device’s flexibility makes it an ideal solution for energy monitoring in residential, commercial and industrial settings.

Application

Energy meters are used to measure single-phase applications such as residential, household and industrial. The device measures and displays various important electrical parameters.

It is equipped with a white backlight LCD screen for perfect reading. As well as an RS485 communication port for remote reading and monitoring. The bidirectional energy measurement makes it a good choice for solar PV energy measurement. The compact design and DIN rail installation provide an easy and economical solution for your measurement needs.

EXIT

Pulse output
The device provides two pulse outputs. Both pulse outputs are passive type.
Pulse output 1 is configurable. The pulse output can be set to generate pulses representing the total /import/export kWh or kVArh.
The pulse constant can be set to generate 1 pulse at: 0.001/0.01/0.1/1 kWh/kVArh.
Pulse width: 200/100/60ms
Pulse output 2 is not configurable. It is fixed for total kWh. The constant is 1000imp/kWh.

RS485 output for Modbus RTU

The meter provides an RS485 port for remote communication. Modbus RTU is the protocol used. For Modbus RTU, the following RS485 communication parameters can be configured using the Modbus command.
Baud rate: 1200, 2400, 4800, 9600 bps. Default: 2400 bps
Parity: NONE/EVEN/ODD
Stop bits: 1 or 2
Modbus address: 1 to 247

General

DIN rail dimensions 18x118x64 (WxHxD) DIN 43880
DIN rail mounting 35mm
Ingress protection IP51 (internal)
Material Self-extinguishing UL94V-0