Product Introduction

EM513126 Three Phase LoRaWAN Smart Energy Meter

The EM513126 is a high-performance three-phase four-wire DIN rail energy meter designed for modern smart metering systems. Equipped with both LoRaWAN wireless communication and RS485 Modbus RTU, it enables efficient remote meter reading while maintaining flexible local communication.

Designed as a non-relay (postpaid) version, the EM513126 focuses on accurate energy measurement, real-time monitoring, and alarm reporting rather than remote load control. It supports bidirectional active and reactive energy measurement, making it suitable for renewable energy systems, commercial buildings, industrial distribution, and smart energy management platforms.

With built-in event recording and multiple alarm functions, including overvoltage, overcurrent, frequency deviation, and tamper detection, the EM513126 provides reliable operational monitoring while maintaining a simple and cost-effective architecture.

Product Details

Smart Alarm & Event Monitoring

The EM513126 provides comprehensive monitoring functions to improve system reliability.

Supported alarms include:

• Overvoltage

• Overcurrent

• Frequency deviation

• Terminal cover tamper detection

• Side cover tamper detection

The meter immediately reports alarm events through LoRaWAN and stores event records with timestamps for future analysis.

Unlike the relay version, this model does not disconnect the load when an alarm occurs. It only reports and records alarm status.

Communication

The meter supports two communication methods:

LoRaWAN

• Long-range wireless communication

• Remote meter reading

• Active data reporting

• Configurable reporting intervals

• Remote status monitoring

RS485

• Modbus RTU protocol

• Local communication

• Firmware upgrade support

• Baud rate up to 115200bps

Accurate Energy Measurement

The EM513126 supports:

• Forward active energy

• Reverse active energy

• Forward reactive energy

• Reverse reactive energy

• Configurable bidirectional calculation modes

• Voltage

• Current

• Active power

• Reactive power

• Apparent power

• Frequency

• Power factor

• Demand measurement

Suitable for both grid consumption and distributed energy applications.

Postpaid Metering Solution

This model is designed specifically for postpaid billing applications.

It does NOT include an internal relay, therefore it:

• Supports postpaid electricity billing

• Does not support prepaid management

• Does not support remote power disconnection

• Does not perform automatic load disconnection during alarm conditions

• Displays alarm status while maintaining continuous power supply

This design makes the EM513126 an ideal solution where monitoring and data acquisition are required without remote switching functionality.

Typical Applications

• Smart buildings

• Commercial energy management

• Industrial power monitoring

• Utility sub-metering

• Distribution panels

• Renewable energy monitoring

• Energy management systems (EMS)

• IoT metering networks

Technical Specifications

Antenna Options

The EM513126 supports the same antenna options as the single-phase LoRaWAN models:

• Glue Stick SMA Antenna

• Compact installation

• Suitable for meter cabinets

• Suction Cup SMA Antenna

• Flexible positioning

• Enhanced wireless signal performance

• Ideal for enclosed electrical cabinets