Shelly Pro 3EM Three-Phase Energy Meter User and Safety Guide

Read before use

This document contains important technical and safety information about the device, its safety use and installation.

⚠️ CAUTION! Before beginning the installation, please read carefully and entirely this guide and any other documents accompanying the device. Failure to follow the installation procedures could lead to malfunction, danger to your health and life, violation of law or refusal of legal and/or commercial guarantee (if any). Allterco Robotics EOOD is not responsible for any loss or damage in case of incorrect installation or improper operation of this device due to failure of following the user and safety instructions in this guide.

Product Introduction

Shelly® is a line of innovative microprocessor-managed devices, which allow remote control of electric circuits through a mobile phone, tablet, PC, or home automation system. Shelly® devices can work standalone in a local Wi-Fi network or they can also be operated through cloud home automation services. Shelly Cloud is a service that can be accessed using either Android or iOS mobile application, or with any internet browser at https://home.shelly.cloud/. Shelly® devices can be accessed, controlled and monitored remotely from any place where the user has internet connectivity, as long as the devices are connected to a Wi-Fi router and the Internet. Shelly® devices have Embedded Web Interface accessible at http://192.168.33.1 when connected directly to the device access point, or at the device IP address on the local Wi-Fi network. The embedded Web Interface can be used to monitor and control the device, as well as adjust its settings.

Shelly® devices can communicate directly with other Wi-Fi devices through HTTP protocol. An API is provided by Allterco Robotics EOOD. For more information, please visit: https://shelly-api-docs.shelly.cloud/#shelly-family-overview

Shelly® devices are delivered with factory-installed firmware. If firmware updates are necessary to keep the devices in conformity, including security updates, Allterco Robotics EOOD will provide the updates free of charge through the device Embedded Web Interface or the Shelly mobile application, where the information about the current firmware version is available. The choice to install or not the device firmware updates is the user’s sole responsibility. Allterco Robotics EOOD shall not be liable for any lack of conformity of the device caused by failure of the user to install the provided updates in a timely manner.

Shelly® Pro Series

Shelly® Pro series is a line of devices suitable for homes, offices, retail stores, manufacturing facilities, and other buildings. Shelly® Pro devices are DIN mountable inside the breaker box, and highly suitable for new building construction. All Shelly® Pro devices can be controlled and monitored through Wi-Fi and LAN connections. Bluetooth connection can be used for the inclusion process.

Shelly Pro 3EM (The Device)

Shelly Pro 3EM is a DIN rail mountable three-phase energy meter. The Device reports accumulated energy as well as voltage, current, power factor data in real time. It stores data in non-volatile memory for later retrieval at least 60 days of 1 min resolution.

Legend

• A: Phase A input
• B: Phase B input
• C: Phase C and Device power supply input
• N: Neutral input
• IA: Phase A current transformer (CTA) input
• IB: Phase B current transformer (CTB) input
• IC: Phase C current transformer (CTC) input
• IN: Neutral current transformer (CTN) input

Cables:

• LA: Phase A (110-240 VAC)
• LB: Phase B (110-240 VAC)
• LC: Phase C (110-240 VAC)
• N: Neutral cable

Installation Instructions

⚠️ CAUTION! Danger of electrocution. Mounting/installation of the Device to the power grid has to be performed with caution, by a qualified electrician.

⚠️ CAUTION! Danger of electrocution. Every change in the connections has to be done after ensuring there is no voltage present at the Device terminals.

⚠️ CAUTION! Use the Device only with a power grid and appliances which comply with all applicable regulations. A short circuit in the power grid or any appliance connected to the Device may damage it.

⚠️ CAUTION! Do not connect the Device to appliances exceeding the given max load!

⚠️ CAUTION! Connect the Device only in the way shown in these instructions. Any other method could cause damage and/or injury.

⚠️ CAUTION! Do not install the Device where it can get wet.

⚠️ CAUTION! Plug in or unplug the LAN cable only when the Device is powered off! The LAN cable must not be metallic in the parts touched by the user to plug it in or unplug it.

RECOMMENDATION: Connect the Device using solid single-core cables with increased insulation heat resistance not less than PVC T105°C (221°F).

Before starting the mounting/installation of the Device, check that the breakers are turned off and there is no voltage on their terminals. This can be done with a phase tester or multimeter. When you are sure that there is no voltage, you can proceed to connecting the cables.

Following the diagram on Figure 1 install the current transformer CTA around the Phase A cable to the load(s), CTB around the Phase B cable to the load(s) and CTC around the Phase C cable to the load(s). Install the CTN around the Neutral cable from your load(s).

Mount the Device onto the DIN rail.

Plug the cables of the CTA, CTB and CTC into the Device IA, IB and IC input connectors respectively. Plug the CTN cable into IN.

Mount circuit breakers in accordance with your local regulations and connect the Phase A, Phase B and Phase C cables through them to the Device A, B and C inputs respectively. Connect the Neutral cable to the N input.

The Device is powered through its C input.

Make sure you have made all the connections correctly and then turn on the circuit breakers.

Schematic Diagram Description (Figure 1)

The diagram illustrates the wiring connections for the Shelly Pro 3EM. It shows terminals labeled A, B, C, and N for power input and connection to the grid. Correspondingly, it shows terminals IA, IB, IC, and IN for current transformer (CT) inputs for Phase A, Phase B, Phase C, and Neutral respectively. The diagram indicates that the device is powered via terminal C, and the CT cables (CTA, CTB, CTC, CTN) connect to their respective input terminals.

Initial Inclusion

If you choose to use the Device with the Shelly Cloud mobile application and Shelly Cloud service, instructions on how to connect the Device to the Cloud and control it through the Shelly App can be found in the “App Guide” https://shelly.link/app. The Shelly mobile application and Shelly Cloud service are not conditions for the Device to function properly. This Device can be used standalone or with various other home automation platforms and protocols.

⚠️ CAUTION! Do not allow children to play with the buttons/switches connected to the Device. Keep the devices for remote control of Shelly (mobile phones, tablets, PCs) away from children.

LED Indication

• Power: Red light if power supply is connected.
• Wi-Fi (varies):
  • Blue light if in AP mode
  • Red light if in STA mode, and not connected to a Wi-Fi network
  • Yellow light if in STA mode, and connected to a Wi-Fi network. Not connected to Shelly Cloud or Shelly Cloud disabled
  • Green light if in STA mode, and connected to a Wi-Fi network and the Shelly Cloud
  • The LED will be flashing Red/Blue if OTA update is in progress
• LAN: Green light if LAN is connected.
• Count: Red light will be flashing when the Device is measuring energy according to settings with frequency dependent to the measurement interval.

Factory Reset: Press and hold for 10 seconds to factory reset.

Specification

• Dimensions (HxWxD): 94x19x69 mm / 3.70x0.75x2.71 in
• Mounting: DIN rail
• Ambient temperature: from -20 °C to 40 °C / from -5 °F to 105 °F
• Humidity: 30 % to 70 % RH
• Max. altitude: 2000 m / 6562 ft
• Power supply: 110 - 240 VAC, 50/60Hz
• Electrical consumption: < 3 W
• Internal temperature sensor: Yes
• Voltmeters (RMS for each phase): 100 - 260 V
• Voltmeters accuracy: ±1 %
• Ammeters (RMS via CT for each phase and the Neutral): 0 - 120 A
• Ammeters accuracy:
  • ±1 % (2 - 120 A)
  • ±2 % (1 - 2 A)
  • ±5 % (0 - 1 A)
• Phase sequence error detection: Yes (option)
• Power and energy meters:
  • Active and apparent power
  • Active and apparent energy
  • Power factor
  • Fundamental active and fundamental reactive energy
• Measurement data storage: At least 60 days of 1 min data resolution
• Data export:
  • CSV for PQ recorded values
  • JSON format export through RPC
• Wi-Fi protocol: 802.11 b/g/n
• Wi-Fi frequency: 2412 - 2472 MHz (Max. 2483 MHz)
• Wi-Fi max. RF output power: 15 dBm
• Wi-Fi operational range (depending on local conditions):
  • up to 50 m / 160 ft outdoors
  • up to 30 m / 100 ft indoors
• Bluetooth protocol: BLE 4.1
• Bluetooth frequency: 2402 - 2480 MHz (Max. 2483.5 MHz)
• Bluetooth operational range (depending on local construction):
  • up to 30 m / 100 ft outdoors,
  • up to 10 m / 33 ft indoors
• Bluetooth max. RF output power: 5 dBm
• CPU: ESP32
• Flash: 16 MB
• Webhooks (URL actions): 20 with 5 URLs per hook
• Scripting: mJS
• MQTT: Yes

Declaration of Conformity

Hereby, Allterco Robotics EOOD declares that the radio equipment type Shelly Pro 3EM is in compliance with Directive 2014/53/EU, 2014/35/EU, 2014/30/EU, 2011/65/EU. The full text of the EU declaration of conformity is available at the following internet address: https://shelly.link/Pro3EM_DoC

Manufacturer: Allterco Robotics EOOD

Address: 103 Cherni vrah Blvd., 1407 Sofia, Bulgaria

Tel.: +359 2 988 7435

E-mail: support@shelly.cloud

Official website: https://www.shelly.cloud

Changes in the contact information data are published by the Manufacturer on the official website. https://www.shelly.cloud

All rights to the trademark Shelly® and other intellectual rights associated with this Device belong to Allterco Robotics EOOD.

[CE Mark] [RoHS Compliant]