EVC2 Modbus TCP meters: Difference between revisions
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= Modbus TCP meters = | = Modbus TCP meters = | ||
== Shelly PRO-3EM == | == Shelly PRO-3EM == | ||
== Wiring diagram == | === Description === | ||
[[File:Pro-3EM-wiring-diagram-with-fuses.png|Pro-3EM-wiring-diagram|left|frameless | Modbus TCP meters allow for more flexibility in the installation. Since they use local network connectivity usually both wired and wireless options are available depending on the installation needs. The installation is also faster, since the meters need less space and work with the electrical cabinet, as the measurements are done via CT clamps that connect to the meter. It also allows for load balance in situations, where power cables have been prepared in advance, without preparing any data cables, or if the distances from electrical cabinet to the charger location are very long. | ||
=== Wiring diagram === | |||
[[File:Pro-3EM-wiring-diagram-with-fuses.png|Pro-3EM-wiring-diagram|left|frameless]] | |||
== User and safety guide == | |||
=== User and safety guide === | |||
[[Media:Shelly Pro 3EM multilingual printed user and safety guide.pdf|Shelly Pro 3EM user and safety guide]] | [[Media:Shelly Pro 3EM multilingual printed user and safety guide.pdf|Shelly Pro 3EM user and safety guide]] | ||
== Certificates and conformity declarations == | |||
=== Resources === | |||
[https://www.shelly.com/blogs/documentation/shelly-pro-3em?srsltid=AfmBOopPoEcc-LmzmIZMtuASYl7jvN4q449i6NRq6XhfFm3q_Oo8MCUt Manufacturers documentation page] | |||
=== Certificates and conformity declarations === | |||
[[Media:Shelly Pro 3EM multilingual EU declaration of conformity 2025-07-23.pdf|EU]] | [[Media:Shelly Pro 3EM multilingual EU declaration of conformity 2025-07-23.pdf|EU]] | ||
| Line 17: | Line 49: | ||
[[Media:Shelly Pro 3EM AU NZ Certificate for Suitability.pdf|AU and NZ]] | [[Media:Shelly Pro 3EM AU NZ Certificate for Suitability.pdf|AU and NZ]] | ||
== Technical data == | === Technical data === | ||
Latest revision as of 11:32, 4 November 2025
Modbus TCP meters
Shelly PRO-3EM
Description
Modbus TCP meters allow for more flexibility in the installation. Since they use local network connectivity usually both wired and wireless options are available depending on the installation needs. The installation is also faster, since the meters need less space and work with the electrical cabinet, as the measurements are done via CT clamps that connect to the meter. It also allows for load balance in situations, where power cables have been prepared in advance, without preparing any data cables, or if the distances from electrical cabinet to the charger location are very long.
Wiring diagram
User and safety guide
Shelly Pro 3EM user and safety guide
Resources
Manufacturers documentation page
Certificates and conformity declarations
Technical data
| Type | Value |
|---|---|
| Physical | |
| Size (HxWxD): | 94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in |
| Weight: | 62 ±1 g / 2.19 ±0.05 oz |
| Mounting: | DIN rail |
| Screw terminals max torque: | 0.4 Nm / 4.43 lbin |
| Conductor cross section: | 0.5 to 2.5 mm² / 20 to 14 AWG (solid, stranded, and bootlace lugs) |
| Conductor stripped length: | 6 to 7 mm / 0.24 to 0.28 in |
| Shell material: | Plastic |
| Color: | White |
| Environmental | |
| Ambient temperature: | -20 °C to 40 °C / -5 °F to 105 °F |
| Humidity: | 30 % to 70 % RH |
| Max. altitude: | 2000 m / 6562 ft |
| Electrical | |
| Power supply voltage AC: | 100 - 260 V, 50/60 Hz |
| Power supply voltage DC: | N/A |
| Power consumption: | < 3 W |
| External protection: | Tripping characteristic B or C,
16A max. rated current, min. 6 kA interrupting rating, energy limiting class 3 |
| Sensors, meters | |
| 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 |
| Compatible CT | CT 120A |
| Ammeters accuracy: | ±1 % (2 - 120 A), ±2 % (1 - 2 A), ±5 % (0 - 1 A) |
| Power and energy meters: |
|
| Channel-to-channel calibration minimum load | 500 W per channel |
| No load threshold: | 30 VA per channel |
| Measurement data storage: | At least 60 days of 1 min data resolution |
| Data export: |
|
| Radio | |
| RF band: | 2400 - 2495 MHz |
| Max. RF power: | <20 dBm |
| Wi-Fi protocol: | 802.11 b/g/n |
| Wi-Fi Range: | Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors
(Depends on local conditions) |
| Bluetooth Protocol: | 4.2 |
| Bluetooth Range: | Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
(Depends on local conditions) |
| MCU | |
| CPU: | ESP32-D0WDQ6 |
| Flash: | 16 MB |
| Firmware capabilities | |
| Webhooks (URL actions): | 20 with 5 URLs per hook |
| Scripting: | Yes |
| MQTT: | Yes |
| CoAP: | No |