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Datasheet of WEM3050T

If you are looking for a power meter , please read this article first. It will help you to confirm whether IAMMETER`s product meets your requirements quickly. How to choose the power meter with regard to your requirements

1 Key Features

  • Real-time energy monitoring via your Wi-Fi network
  • Simply one-key Wi-Fi setup to connect to your Wi-Fi network
  • Enterprise-class performance, suitable for domestic, commerical, industrial use and solar system
  • Cloud service and Mobile app is available
  • Support local monitoring via LAN or uploading the data to your specificed server
  • 2-pole DIN-rail mounting fits neatly in the meter box

2 General Specification

Specification Description
Standard package 1. Wi-Fi Energy Meter (WEM3080) x 1
2. Split-core Current Transformer(150A, 250A or 500A optional) x 3
3. 2.4G Wi-Fi Antenna x 1
Phase Three phase
Power Supply Built-in universal power supply
Communication Built-in Wi-Fi
Antenna External 2.4G antenna with SMA male
Reporting interval 1-5 minutes interval, typically 1 minute
Report contents Active Energy (Forward and Reverse), Active Power, Voltage, Current, Frequency
Configuration 1. Wi-Fi access point and webpage for setting SSID and password
2. Mobile App for setting SSID and password
Monitoring Scenarios 1. Monitor on Iammeter Cloud
2. Monitor locally on your PC via WLAN (Http get interface)
3. Integrate with third party server, such as your own server, PVoutput and HomeAssistant (TCP/SSL interface)

3 Electrical characteristics

Specification Description
Input Voltage 80V~277VAC (Phase Voltage), 140V~480 VAC (Line Voltage)
CT Rating 150A
Measurement Accuracy 1. Voltage: ±1.0%
2. Current: ±1.0%
3. Active Power: ±1.0%
4. Active Energy: Class 1 as defined by IEC62053-21
Typical power consumption ≤2W (230VAC input)

4 Mechanical characteristics

Specification Description
Weight 0.40Kg
Dimension 90×36.5×58mm (2 DIN pole)
CT Diameter 16mm
Protection IP51 applied for the front of the product
Connection 1. AC input: UA-Live wire Phase A, UB-Live wire Phase B, UC-Live wire Phase C, UN-Neutral wire
2. RS485 interface: A-Positive, B-Negative
3. CT: IA+ is Positive Phase A, IA- is Negative Phase A; IB+ is Positive Phase B, IB- is Negative Phase B; IC+ is Positive Phase A, IC- is Negative Phase C
4. SMA port: External Antenna Port

5 Environmental conditions

Specification Description
Operating Temperature -20~+60℃
Operating Humidity 5~95% Non-condensing humidity
Altitude ≤ 2000m

6 Wi-Fi Network

Specification Description
WLAN Channel:Auto
SSID iMeter_xxxxxxxxx(8 digits serial no), no password
Configuration Page URL:
Login username: admin

7 Wi-Fi Parameters

Specification Description
Wi-Fi Mode Support WiFi 802.11b/g/n, Wi-Fi frequency 1-13
Transmit power 18.5dBm@11b,15.5dBm@11g,14.5dBm@11n;
Wi-Fi Frequency 2.400 ~ 2.472GHZ
Transmit Speed 3686400bps at highest
Maximum Connections 8
Wi-Fi Antenna External, 5dBi gain

8 RS485 interface

Specification Description
Protocol Modbus-RTU
Data format “n,8,1”
Baud rate 1200、2400、4800、9600Bps;9600Bps by default

9 Indicator

Indicator Description
RUN Always on after powering on,flashing while the WiFi module is communicating with the power meter
REV Always on when:
1. The current is reversed as per the bottom-marked current direction of CT for any phase, or
2. The CT is connected to the wrong phase
WIFI Always on after the Wi-Fi module is connected to the router

10 Compliance Certificates and standard

  • Certification: CE, FCC, RoHS
  • CE Standard Applied
Essential Requirements Applied Standard
Health 1.EN 62479:2010
2.EN 50663:2017
Safety 1. IEC 62052-11:2020
2. IEC 62053-21:2020
Electromagnetic Compatibility 1. EN IEC 61000-6-3:2021
2. EN IEC 61000-6-1:2019
3. ETSI EN 301 489-1 V2.2.3(2019-11)
4. ETSI EN 301 489-17 V3.2.4(2020-09)
Effective Use of the Radio Spectrum 1. ETSI EN 300 328 V2.2.2(2019-07)
  • IEC Standard Applied
Essential Requirements Applied Standard Meters of Class
General Requirement IEC62052-11 Protective class Ⅰ, Indoor
Accuracy requirement IEC62053-21 Accuracy index class Ⅰ
Mechanical requirement IEC62053-21 Protective class Ⅰ, Indoor

11 Attachment

CE Certificate

![WEM3050T Cert]( Cert.jpg)

FCC Certificate

FCC Certificate

RoHS Declaration



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