CHF94.–
Shelly Pro 3EM 120A
Questions about Shelly Pro 3EM 120A
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The power cables are approx. 60cm long. Extension cables are available at https://shellyparts.de/products/verlangerungskabel-fur-shelly-3em-pro-3em-pro-em-50a , but I would be careful with them, as an extension cable always increases the resistance.
digitec
5 months ago
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The neutral conductor clamp is optional and is not included with the Shelly Pro 3EM. You must therefore purchase it separately. The specific type of clamp required is not mentioned in the official instructions, but it should be a neutral clamp with a maximum current load of 120 A that is compatible with the Shelly Pro 3EM. It is advisable to contact the manufacturer or a specialised dealer to confirm the exact specification.
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digitec
8 months ago
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Yes, the Shelly Pro 3EM-120 is equipped with three current transformers (CTs) to measure the current on each phase. These clamps allow non-contact measurements and are designed to be mounted directly on the phase cables.
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digitec
8 months ago
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The Shelly Pro 3EM-120 is not sold with the clamps (current transformers) included. You must purchase them separately to take current measurements.
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I am very satisfied and it works via LAN cable or WLAN with this device. The app is called Shelly and runs via a free cloud account. Consumption can be read out in detail, displayed in the app and even exported as an Excel file. Ideal for your project. I now have at least 20 different Shelly devices.
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the app accesses the cloud and works from anywhere if the shelly is configured for the cloud. otherwise access the web gui, either from the same network or with the appropriate router configuration.
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Yes, the APP shows the time curve of all power values. The values can also be exported via the web interface (minute resolution). With your own programme, the values can also be read more frequently (Json, hhtp or...).
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Works perfectly with both LAN and WLAN without any problems.
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No, not with a single device. Then one measuring device must be connected to the house connection and one to the inverter. But then you still have to do the maths. The inverter should actually tell you how much electricity you have produced. Ideally, it should also show the feed-in. It depends on the device, maybe you can integrate the Shelly into the inverter. Otherwise, I measure this with the solar manager and a Telsa Powerwall gateway. These devices talk to each other via LAN using the MQTT protocol.
Technically, I don't think so. However, these are different generations of equipment... I find it more reassuring to have the model that corresponds to the company's new standard.
I don't know if I understand it correctly, but the phase on which the feed-in is connected counts as minus, provided the consumption on the phase is lower.
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Salut ! Environ 60 centimètres : https://www.shelly.cloud/en/products/shop/ct120ax1
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