WEM3080TD Quickstart

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

1. Hardware Package

2. Typical Wiring Diagram

Please note:

1. The WEM3080TD is designed for a 3-phase 3-wire Delta system. There is no neutral wire, so there is no UN connection.
2. If your site is a 3-phase 4-wire WYE/Star system, please use WEM3080T instead of WEM3080TD.
3. Phase B is the reference phase of WEM3080TD. Connect UA, UB, and UC to phase A, phase B, and phase C respectively.
4. Install CTa on phase A and CTc on phase C. CTb is not used in the standard Delta wiring mode.
5. The CT direction (K->L) must follow the line-to-line direction toward phase B: phase A to phase B for CTa, and phase C to phase B for CTc.

If you see negative power values in IAMMETER, the usual reasons are:

1. CTa and CTc are installed on the wrong phases.
2. The CT direction is reversed.
3. UA, UB, and UC are not connected in the correct phase order.

3. Mechanical Dimensions

4. Wi-Fi Setup

There are two ways to configure the meter's Wi-Fi settings. Setting up by mobile app is recommended. If you meet any problem in the app, you can also configure it in a browser.

4.1 Set up by mobile app

Video: Wi-Fi setup by mobile app

Step 1, scan the QR code and download the mobile app.

Step 2, search and connect your phone to the meter's access point signal iMeter_xxxxxxxx.

Step 3, open the app and find the meter.

Tips: If the app prompts "Invalid device version", set up the Wi-Fi network in a browser instead, the same as the browser setup described in IAMMETER quickstarts.

Step 4, select the SSID of your Wi-Fi router.

Step 5, enter the password and save. After the Wi-Fi settings are configured successfully, the app will display the IP address assigned to the meter.

4.2 Set up in the browser

Video: Wi-Fi setup in the browser

If you have already completed the Wi-Fi setup in section 4.1, you can skip this section.

5. Sign Up in the Mobile App

Tips: SN is the unique serial number of the meter. You can copy it from the meter's access point signal (iMeter_xxxxxxxx, where xxxxxxxx is the serial number).

6. Set the Time Zone

Tips: Set the time zone according to the meter's installation location to ensure the reports and charts show the correct time.

7. Edit the Meter Type

Tips: The default meter type in IAMMETER is "Single phase". Change it to "Three phase" for WEM3080TD.

8. Set the Use Type of Each CT

Tips: Set the use type of each CT according to the actual installation. In the standard Delta wiring mode, only phase A and phase C are measured. Phase B is the reference phase and normally shows zero power.

9. Verify the Data

Monitor your energy consumption in IAMMETER-Cloud

When the meter is configured correctly in a Delta system:

1. Phase A and phase C should show valid voltage, current, and power data.
2. Phase B is the reference phase, so its power reading is normally zero.
3. If power is negative or obviously incorrect, re-check the CT phase assignment, CT direction, and phase voltage wiring order.

View on mobile app

View on web portal

Tips: Visit IAMMETER and log in with the same username and password as the app to view more reports in the web portal.

10. How to Know the Meter Is Connected to Your Router

1. After the meter connects to your Wi-Fi router, the access point signal iMeter_xxxxxxxx disappears for security reasons.
2. You can find the meter in the network list of a PC connected to the same local network.
3. If you want to see the meter's access point again, switch off the router temporarily or move the meter to a location without coverage from the configured Wi-Fi network.

11. Home Assistant and Third-Party Integration

Four ways (MQTT, Modbus/TCP, HACS, core integration) to integrate the Wi-Fi energy meter into Home Assistant

Integrate the Wi-Fi energy meter into Home Assistant

Use the Wi-Fi energy meter in a local system without internet access

Integrate IAMMETER energy meter to third-party platforms

12. More References

WEM3080TD product page

IAMMETER Docs

IAMMETER Energy monitor video tutorials