Shelly EM Gen3 Smart Energy Meter

User and Safety Guide

Introduction

The Shelly EM Gen3 is a Wi-Fi and Bluetooth enabled device designed for comprehensive monitoring and control of electrical energy consumption. It allows users to track total energy consumption, voltage, current, and power factor, providing valuable insights into energy usage patterns. The device supports up to four Current Transformer (CT) clamps, with two included as standard, enabling detailed monitoring of individual circuits. It is designed for easy installation on a standard 35mm DIN rail.

Safety Information

General Safety:

Read and understand this manual thoroughly before operating the device.
Follow all safety instructions provided.
Keep the device out of reach of children.
Do not use the device if it appears damaged.

Electrical Safety:

[warning] High voltage can be dangerous and cause injury or death.
Installation and wiring should only be performed by qualified electricians.
Always disconnect the power supply before performing any installation or maintenance work.
Ensure the device is properly grounded if required by local regulations.
Do not exceed the maximum load ratings specified for the device and connected CT clamps.
Use only Shelly-approved CT clamps with the Shelly EM Gen3.
Ensure all connections are secure and insulated.

Handling and Environment:

Avoid exposing the device to extreme temperatures, high humidity, or direct sunlight.
Operate the device within the specified temperature and humidity ranges.

Features and Specifications

Feature	Specification
Power Supply	100-260V AC, 50/60Hz
Device Max Current	2A
Communication	Wi-Fi 802.11 b/g/n, Bluetooth 4.2
CT Clamp Channels	2 (expandable to 4 with optional clamps)
Measured Parameters	Voltage, Current, Active Power, Reactive Power, Apparent Power, Energy, Power Factor
Operating Temperature	-20°C to 40°C (-4°F to 104°F)
Operating Humidity	30% to 70% RH (non-condensing)
Dimensions (H x W x D)	84mm x 18mm x 60mm
Mounting	35mm DIN rail
Protocols	MQTT, CoAP, HTTP API
Security	WPA/WPA2
App Support	Shelly Smart Control
Ingress Protection	IP20

Wiring Diagrams Description

The Shelly EM Gen3 requires specific wiring for power and monitoring. It features terminals for mains power input, load output, and CT clamp connections.

Diagram 1: Basic Wiring (No Load Output)

This diagram illustrates the basic connection of the Shelly EM Gen3 to the power supply and two CT clamps. The device itself is powered via the 'L' (Live) and 'N' (Neutral) input terminals. Two CT clamps are connected to the 'CT1' and 'CT2' terminals respectively. This configuration is typically used for monitoring the total consumption of a panel or a specific circuit without directly switching the load through the device.

L (Input): Connect the Live wire from the power source.
N (Input): Connect the Neutral wire from the power source.
CT1: Connect the wires of the first CT clamp.
CT2: Connect the wires of the second CT clamp.
L_out: Terminal for the Live wire of the load (if switching is used, not shown in this basic diagram).
N_out: Terminal for the Neutral wire of the load (if switching is used, not shown in this basic diagram).

Diagram 2: Wiring with CT Clamps

This diagram shows the Shelly EM Gen3 connected to the power supply and two CT clamps, with the load connected through the device's output terminals. This allows for monitoring and potential control of the connected load.

L (Input): Connect the Live wire from the power source.
N (Input): Connect the Neutral wire from the power source.
CT1: Connect the wires of the first CT clamp, clamped around the live wire supplying the load.
CT2: Connect the wires of the second CT clamp, clamped around another live wire (e.g., for a second load or circuit).
L_out: Connect the Live wire going to the load.
N_out: Connect the Neutral wire going to the load.

The CT clamps measure the current flowing through the live wires they are clamped around.

Diagram 3: Wiring with CT Clamps and Power Supply (100-260V AC)

This diagram explicitly shows the device receiving power from a 100-260V AC source via the 'L' and 'N' input terminals. Two CT clamps are connected to 'CT1' and 'CT2' terminals, and the load is connected to 'L_out' and 'N_out'. This is a common setup for monitoring a main power feed and potentially a sub-circuit.

Power Input (L): Connect the Live wire from the mains supply (100-260V AC).
Power Input (N): Connect the Neutral wire from the mains supply.
CT1: Connect the first CT clamp, clamped around the live wire of the circuit to be monitored.
CT2: Connect the second CT clamp, clamped around the live wire of another circuit to be monitored.
L_out: Connect the Live wire to the load.
N_out: Connect the Neutral wire to the load.

The diagram visually represents the device powered by the mains and monitoring current via the CT clamps.

Shelly Cloud Inclusion

To integrate your Shelly EM Gen3 with the Shelly ecosystem:

Download and install the "Shelly Smart Control" app from your device's app store (iOS or Android).
Create a new Shelly account or log in to an existing one.
Ensure your Shelly EM Gen3 is powered on and within range of your Wi-Fi network.
To add the device, you may need to put it into pairing mode. Typically, this involves pressing and holding the reset button for approximately 5 seconds until the Wi-Fi indicator LED starts blinking rapidly.
Open the Shelly Smart Control app, tap the "+" icon (Add Device), and follow the on-screen instructions to discover and add your Shelly EM Gen3 to your account.
Connect the device to your Wi-Fi network by entering your network credentials when prompted by the app.

Once connected, you can monitor energy consumption, set schedules, and control connected loads remotely via the app.

Declaration of Conformity

Shelly Europe Ltd. hereby declares that the Shelly EM Gen3 is in compliance with Directive 2014/53/EU, 2014/30/EU, 2014/35/EU, 2011/65/EU. The full text of the EU declaration of conformity is available at the following internet address: www.shelly.com/en-app/shelly-compliance

Manufacturer: Shelly Europe Ltd.

Address: No. 1, Industrial Zone, 1336 Sofia, Bulgaria

Installation Instructions

Follow these steps carefully to install your Shelly EM Gen3:

Disconnect Power: Before starting installation, ensure that the main power supply to the circuit where the Shelly EM Gen3 will be installed is switched OFF at the breaker. Verify that the power is off using a voltage tester.
Mount the Device: Securely mount the Shelly EM Gen3 onto a standard 35mm DIN rail in your electrical panel or enclosure.
Connect Power Input: Connect the Live (L) and Neutral (N) wires from your power source to the corresponding input terminals on the Shelly EM Gen3. Ensure these connections are firm and properly insulated.
Connect Load Output: If you intend to control or monitor a load through the device, connect the Live wire of the load to the 'L_out' terminal and the Neutral wire of the load to the 'N_out' terminal.
Connect CT Clamps:
- Clamp the first CT clamp around the Live wire of the circuit you wish to monitor (e.g., the main incoming live wire or the live wire of a specific appliance). Ensure the arrow on the CT clamp points in the direction of current flow (from source to load).
- Connect the wires of the first CT clamp to the 'CT1' terminals on the Shelly EM Gen3.
- If using a second CT clamp, repeat the clamping process for another live wire and connect its wires to the 'CT2' terminals.
- Ensure the CT clamp wires are not damaged and are securely connected.
Restore Power: Once all connections are verified and secured, turn the main power supply back ON.
Configure Device: Power on the Shelly EM Gen3. It will attempt to connect to your Wi-Fi network. Use the Shelly Smart Control app to complete the setup, name the device, and configure monitoring settings.

Troubleshooting

If you encounter issues with your Shelly EM Gen3, consult the following troubleshooting tips:

Device Not Powering On:
- Check that the Live (L) and Neutral (N) input terminals are correctly wired and securely connected.
- Verify that the voltage supplied to the device is within the specified range (100-260V AC).
- Ensure the circuit breaker is switched ON.
Incorrect CT Readings:
- Confirm that the CT clamps are correctly oriented, with the arrow pointing towards the load.
- Ensure the CT clamps are securely closed around the live wire.
- Verify that the CT clamp wires are properly connected to the 'CT1' and 'CT2' terminals on the Shelly EM Gen3.
- Make sure the correct CT clamp type and rating are selected in the Shelly app settings.
Wi-Fi Connectivity Issues:
- Ensure your Wi-Fi network is operational and the password entered is correct.
- Check that the Shelly EM Gen3 is within the Wi-Fi signal range.
- Try restarting your Wi-Fi router and the Shelly EM Gen3.
- If problems persist, perform a factory reset on the Shelly EM Gen3 and repeat the setup process.
Device Unresponsive:
- Try power cycling the device by turning the circuit breaker off and on again.
- If the issue persists, a factory reset might be necessary. Refer to the Shelly website for instructions on how to perform a factory reset.

Support and Contact Information

For further assistance, documentation, or to learn more about Shelly products, please visit the official Shelly website or contact their support team.