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energy-meters:start [2019-08-15 12:49]
guy_stewart replace venus-device with GX device
energy-meters:start [2020-09-25 12:55] (current)
guy_stewart [3. FAQ]
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 ===== 1. Selection guide ===== ===== 1. Selection guide =====
 +
 +^ __Energy Meter__        ET112    ^  ET340                              ^  EM24 RS485  ^  EM24 Ethernet  ^
 +| Appearance    {{:energy-meters:energy_meter_et112_right_.png?direct&100|}}      {{:energy-meters:energy_meter_et340_right_.png?direct&100|}}                        |  {{:1449135894_upload_products_555_1000-342_20151203104454.png?direct&100|}}  |  {{:1449135894_upload_products_555_1000-342_20151203104454.png?direct&100|}}  |
 +| Display  |  no display      no display  |  LCD Display  ||
 +| Manual and Wiring Diagrams |  [[et112|ET112 Manual]]      [[et340|ET340 Manual  ]]  |  [[em24|EM24 RS485  ]]  |  [[em24-eth|EM24 Ethernet]]  |
 +| Part Number |  REL300100000  |  REL300300000  |  REL200100000 |  REL200200100 
 +| Supported Phases |  1 phase  |  3 phase  ||| 
 +| Maximum Current Rating |  100A  |  65A per phase  |||
 +| Measurement Type |  Shunt  ||||
 +| Data connection |  RS485  |||  Ethernet  |
 +
  
 === First decide if you need single- or three phase meters === === First decide if you need single- or three phase meters ===
  
-For a three phase utility connection, use a three phase meter. For a three phase PV Inverter, use a three phase meter as well. For a single phase utility connection, use a single phase meter. And in an installation with a single phase utility connection, that also has a PV Inverter that needs measuring with a Victron meter, then you can use Rutger 2 pieces of ET112; or use the ET340.+For a three phase utility connection, use a three phase meter. For a three phase PV Inverter, use a three phase meter as well. For a single phase utility connection, use a single phase meter. And in an installation with a single phase utility connection, that also has a PV Inverter that needs measuring with a Victron meter, then you can use 2 pieces of ET112; or use the ET340. 
 + 
 +=== Now, based on current, select the model: === 
 +^ Requirement                       ^ Type  ^ Model / Solution                                ^ 
 +| Single phase up to 100A           | Shunt | ET112 |  
 +| Three phase up to 65A/phase       | Shunt | EM24/ET340*  |  
 +| Single phase more than 100A/phase | CT    | Not available, use the three phase CT solution                      | 
 +| Three phase more than 65A/phase   | CTs   | Carlo Gavazzi EM24DINAV53DISX (see FAQ Q8)       | 
 + 
 +The EM24 meter counts energy in a different way than the ET340. For Germany and most other countries; the EM24 is the advised model. See FAQ Q5 and Q9 for further details regarding energy counting differences. 
 + 
 +=== In case of EM24, select between RS485 and Ethernet connection: ===
  
-=== Now, based on current, select the model === +The Ethernet model will have an advantage in installations where an Ethernet network is available. Rather than having to pull an RS485 wire between the main AC distribution board and the storage system, the existing Ethernet can be used.
-^ Requirement                       ^ Type  ^ Solution                                         ^^^ +
-^ :::                               ^ :::   ^ Part number  ^ Model ^ Specs                       ^  +
-| Single phase up to 100A           | Shunt | REL300100000 | ET112 | 1 phase - max 100A          | +
-| Three phase up to 65A/phase       | Shunt | REL200100000 | EM24  | 3 phase - max 65A/phase     | +
-| Single phase more than 100A/phase | CT    | Not availableuse the three phase CT solution                      ||| +
-| Three phase more than 65A/phase   | CTs   | Carlo Gavazzi EM24DINAV53DISX (see FAQ Q8)       |||+
  
-Besides above meters, we also stock the ET340 meter; REL300300000. It counts energy in a different way than the EM24. For Germany and most other countries; the EM24 is the advised model. See FAQ Q5 and Q9 for details.+The disadvantage is that this relies on that network functioning properly - in case of issues the Storage system will switch to idle mode: passthrough.
  
-=== 1.Support for other Carlo Gavazzi meters ===+===== 2. Support for other Carlo Gavazzi meters =====
  
 Besides above listed meters, there are many more meters available from Carlo Gavazzi. Use this list to see which ones are compatible. Besides above listed meters, there are many more meters available from Carlo Gavazzi. Use this list to see which ones are compatible.
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 ^ EM271    | Not supported | does not report exported energy,                             | ^ EM271    | Not supported | does not report exported energy,                             |
 ^ :::      | :::           | com protocol not compatible with supported grid meters       | ^ :::      | :::           | com protocol not compatible with supported grid meters       |
- 
-===== 2. Manuals ===== 
- 
-  * [[et112|REL300100000 - ET112 - 1 phase - max 100A]] 
-  * [[et340|REL300300000 - ET340 - 3 phase max 65A/phase]] 
-  * [[em24|REL200100000 - EM24 - 3 phase max 65A/phase]] 
  
  
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 Three-phase new meter only (ET340): Three-phase new meter only (ET340):
-  * Measuring Energy from single phase PV Inverter on the second phase of the new meter, ET340, actually works. Where-as with the old meter, the EM24, only the Power Metering (Watts) works. The Energy Metering (kWh) for a single phase PV Inverter on the second phase of the EM24 does not work.+  * Measuring Energy from single phase PV Inverter on the second phase of the new meter, ET340, actually works. Where-as with the old meter, the EM24, only the Power Metering (Watts) works. The Energy Metering (kWh) for a single phase PV Inverter on the second phase of the EM24 does not work. See Q9 for the details.
  
 === Q6: Will you keep shipping both 3 phase meters? (ET340 & EM24) === === Q6: Will you keep shipping both 3 phase meters? (ET340 & EM24) ===
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   * USB485-STIXL : Isolated USB to RS485 converter   * USB485-STIXL : Isolated USB to RS485 converter
 +
 +=== Q11: Can I use Victron energy meters instead of a Victron Inverter/Charger to make use of a GX device (e.g. Cerbo GX), VRM and other features? ===
 +
 +Energy meters are intended only to supplement a Victron inverter charger in the system.
 +Energy Meters are currently limited in their potential applications. Each energy meter is only intended to provide a specific piece of additional information - total loads on AC input and grid import/export, or AC PV inverter or generator production without network communications.
 +
 +{{:energy-meters:energy_meter.png?400|}}
 +
 +They cannot be used for other purposes e.g. to measure specific, arbitrary AC loads or circuits for example.
 +They should also not be considered a replacement to having a Victron inverter / charger. Attempting to use other brand battery inverters and trying to substitute their lack of data connectivity to the GX device by using energy meters will not work.
  
 ===== DISQUS ===== ===== DISQUS =====
 ~~DISQUS~~ ~~DISQUS~~
energy-meters/start.1565866176.txt.gz · Last modified: 2019-08-15 12:49 by guy_stewart