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Norax 3 Photovoltaics: Is 3kW Installation & Energy Meter Suitable for Donated Energy?

klexus 71238 51
Best answers

Does a Norax 3 meter measure energy fed back to the grid from my 3 kW photovoltaic installation?

Yes—if the Norax 3 is configured as a two-way meter, it measures exported energy as well, and the export register is 2.8.0 while 1.8.0 is imported energy [#17170751] [#18584945] [#21043653] In some cases the meter can be programmed as one-way, so exported PV energy may then be counted as consumption instead of being shown separately [#17170751] [#21043712] [#21046022] The practical check is to compare the OBIS registers: 1.8.0 for import, 2.8.0 for export, and 15.8.0 for total energy counted in both directions [#18584945] [#21043712] So the answer depends on how your particular meter was programmed and what the operator reads for settlement [#21043541] [#21046022]
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  • #1 17166692
    klexus
    Level 13  
    Hello, since yesterday I have installed a 3kW photovoltaic installation. The energy meter is norax3 photo in the attachment. Does this meter measure donated energy ??
    Attachments:
    • Norax 3 Photovoltaics: Is 3kW Installation & Energy Meter Suitable for Donated Energy? 20180414_075540.jpg (781.89 KB) You must be logged in to download this attachment.
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  • Helpful post
    #2 17170751
    prose
    Level 36  
    This is a two-way meter, it measures the energy exported.
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  • #3 17915276
    rsv6
    Level 13  
    prose wrote:
    This is a two-way meter, it measures the energy exported.


    So there will be even more dairy products with the inverter?
  • #4 17915410
    prose
    Level 36  
    He won't punch any more. What you use in a phase will be 1 to 1, the rest you will send as a buffer
  • #5 17915670
    FankyKoval
    Level 14  
    It can also be programmed as one-way, I would do a test.
  • #6 17915850
    rsv6
    Level 13  
    Anyone has instructions for code description
    15.8.0. 1
    15.8.1.1
    15.8.2.1
    15.8.3.1
    15.6.0
    15.6.0.1
    1.8.0
    1.8.1
    1.8.2
    1.8.3
    2.8.0
    2.8.1
    2.8.2
    2.8.3
    1.7.0
    15.7.0
    There is no schedule for these codes.

    Added after 15 [minutes]:

    prose wrote:
    He won't punch any more. What you use in a phase will be 1 to 1, the rest you will send as a buffer

    And does the buffer also count separately?
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  • #7 17916012
    3301
    Level 34  
    Here are the OBIS codes
    Attachments:
    • Kody OBIS.pdf (1.45 MB) You must be logged in to download this attachment.
  • #8 17916400
    rsv6
    Level 13  
    2.8.0 however, measures in the other direction but this is a separate scale.
  • #9 17916798
    kj1
    Electrician specialist
    klexus wrote:
    Hello, since yesterday I have installed a 3kW photovoltaic installation. The energy meter is norax3 photo in the attachment. Does this meter measure donated energy ??

    Do you have a contract for energy donation?
  • #10 17918782
    LordFalcon
    Level 13  
    I would be careful with this meter and energy return, because depending on how it is programmed, it will count in the case of bidirectional: downloaded 1.8.0 and returned 2.8.0, and in the case of unidirectional 2.8.0 given, and under 1.8.0 given and collected it will sum ...

    EDIT: To the author of the post. Tauron will rather put you on a different meter, LandisGyr for me.
  • #11 17918875
    zbich70
    Level 43  
    kj1 wrote:
    Do you have a contract for energy donation?
    This is where you need to start. Does the grid operator know at all that you have a PV plant and you intend to feed energy into the grid?
    Norax 3 allows bidirectional measurement, but what if the installation is not reported.
  • #12 18263857
    toma1981
    Level 12  
    Hello, what do you need to install to this meter to be able to access it via the Internet
  • #13 18265303
    marcinbbb
    Level 26  
    You must have an electricity meter with a GPRS module that sends statistics to the EV. Unfortunately, the Noraxas do not support it and, for example, Energa, with the stubbornness of a maniac, installs such miracles for all prosumers. And then once a month the collector comes and writes down. In my 5-year career, I had a GPRS counter twice and now I got this crap.
  • #14 18265463
    slaslo
    Level 18  
    marcinbbb wrote:
    You must have an electricity meter with a GPRS module that sends statistics to the EV. Unfortunately, the Noraxas do not support it and, for example, Energa, with the stubbornness of a maniac, installs such miracles for all prosumers. And then once a month the collector comes and writes down. In my 5-year career, I had a GPRS counter twice and now I got this crap.

    I do not agree with my friend - Energa installed OTUS 3 for me 10 days ago. I do not have an annex to the comprehensive agreement signed yet, and I already have access to https://mojlicznik.energa-operator.pl and I can see all indications. When setting up an account, I gave the number of PPE (this does not change) and the number of the meter (new from the replacement protocol left by the installer).
  • #15 18265473
    marcinbbb
    Level 26  
    You know, at the beginning they also installed EMU 3 and guns, then it stopped sending voltage to L1, they came, dismantled and left it to crap. I contacted Energa and they informed me that at the moment there are no meters with remote reading. As you can see, you have succeeded.
  • #16 18269036
    toma1981
    Level 12  
    Well, it's a shame when I just got a new Norax meter, it's a shame to go to them because they probably won't change to a second meter with Internet access
  • #17 18307183
    miplomar
    Level 1  
    Does the Norax 3 counter (pge mounted) allow for interphase vector balancing and can this be verified?
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  • #18 18457049
    Viszna
    Level 13  
    Good morning everyone.
    I will stick to the topic, because I also have a NORAX 3 meter installed - unfortunately in the field of energy, I am a layman and I would ask you for answers to my questions (surely more people who do not know each other like me will use your knowledge :D )
    The situation is as follows
    The contract signed with ENERGA, I am a prosumer.
    Meter installed: APATOR NORAX 3
    Information from the inverter about the energy produced E-total (kWh): 139.6
    Information read from the meter
    1.8.0 = 267.9
    1.8.1 = 267.9
    1.8.2 = 0.0
    2.8.0 = 90.8
    2.8.1 = 90.8
    2.8.2 = 0.0

    Question 1:
    Do I understand correctly that the meter shows ONLY 90.8kW of energy produced because I used the remaining energy before it went to the grid? (i.e. if the inverter produces 3kW at a given moment, I use 2kW at home, then 1kW goes to the meter at position 2.8.0? - of course I illustrate this in such a simplification)

    Question 2:
    Do I count correctly (simplified of course) from the above data that in the period for which I provided the above meter reading, I actually used electricity:
    267.9 (numerator) + (139.6 (produced) - 90.9 (delivered_do_energa)) = 267.9 + 48.8 = 316.7kW = total consumption by the household

    The bill that I will pay for this period will be (simplify and I do not include fixed fees, etc., it is about the basis for calculating)
    267.9kW * price
    and in the ENERGA buffer I will have 90.8kW?
    WHETHER
    267.9-90.8 = 177.1 * price?

    The installation has been working for me for a month, due to the fact that I have become a prosumer, I cannot settle accounts according to "actual settlement" and provide the meter reading every month, from the information obtained from Energa (most likely) every 2 months the collector will write down the meter reading and it will be sent to me, the invoice is like modernity, and the service at Energa like 30 years ago ...

    best wishes
    Peter
  • #19 18457137
    remix1
    Level 18  
    Q1:
    You could use the rest as you want to calculate how much to read from the inverter and subtract.
    question2:
    Yes.
    question3:
    267.9- (90.8 * 0.8) = 195.26 * price + fixed charges.

    Energa, unfortunately, will rather visit you once a month to write down the meter.
    Unfortunately, I also have norax and it is a product when meters should not be made, even the backlight diode is not from this side ...
  • #20 18533473
    kola626
    Level 10  
    Hello
    I started the PV installation and PGE replaced the meter with a bi-directional NORAX 3. I have a G11 tariff.
    I have a question, I checked the OBIS codes programmed on the meter installed at my place.
    For example, I have 5.8.0, 6.8.0, 7.8.0, 9.8.0, 1.6.0, 1.8.1 and 2.6.0 (I do not include these for dates etc.). I was surprised that I do not have the code 1.8.0 or any in the range 2.8.0 - 2.8.3.
    In this case, how can I check how much I have used and how much have I returned EE?
    I will add that I have a Solax x3-4.0-t Inverter but it shows the EE produced and sent to the network, unfortunately I do not have information about the energy consumed.
    Is this installation OK?
  • #21 18584945
    piwalek77
    Level 1  
    Hello,
    Today the installation of PV on my roof has been completed. The application to the ZE will be next week, and they are supposed to have a month to respond ... In addition, with the current development of the coronavirus, it may be even longer! Therefore, I feel sorry for the installation, which has to wait so long for it to start working on itself ...

    And here I have a question about the meter and its settings - it turns out that I already have a two-way meter (Norax3) installed, so theoretically I could return energy to the ZE right away. Of course, I will not be able to settle any surpluses until the contract is signed, but maybe at least I can use the generated energy on an ongoing basis? On the other hand, I am worried if the switched on installation will have the opposite effect - and it will not start to "punch" the meter ...

    So I did a little test and checked the OBIS codes:
    1.8.0 Imported active energy A +, sum => 21536
    2.8.0 Exported active energy A-, sum => 4
    15.8.0 Imported active energy | A |, sum => 21540

    So it looks like everything is working fine, but now I don't know if:
    - 2.8.0 shows the surplus itself or the total energy given away (everything I produced)?
    - what is the absolute reading 15.8.0 used for? - i.e.
    - what is the risk of leaving the installation on?

    My question boils down to the following example:
    If I use 5kW at a given moment and at the same time give away (produce) 2kW - will the reading of the consumed energy (1.8.0) be 5kWh or 3kWh?

    Best regards!
  • #22 18589610
    Anonymous
    Level 1  
  • #23 18610605
    czaczus22
    Level 12  
    Hello. I have an exclamation mark in a triangle, in the Norax 3 bidirectional counter, which? He marks. Nowhere to find this marking, what kind of error it is.
  • #24 18633479
    derekk
    Level 12  
    Hello.
    At PGE, I have a Corax 3 meter and I am waiting for a replacement due to the installation of PV panels. They should replace 04/04/2020 but the meter is in the room so they won't come and I can jump them. I wanted to use the installation without overproducing energy only for direct consumption, this is allowed by the Fronius inverter. Unfortunately, this meter is super intelligent and, despite the lack of overproduction, it counts direct consumption as if I were downloading from the network. How is it possible ??
  • #25 18633494
    theo33
    Level 27  
    Impossible, if you think that there is no overproduction, nothing is sent and nothing is sent, even a super intelligent meter cannot count it, unless you have a 1-phase inverter and you are currently downloading not from the phase on which it is working
  • #26 18633590
    czaczus22
    Level 12  
    derekk wrote:
    Hello.
    At PGE, I have a Corax 3 meter and I am waiting for a replacement due to the installation of PV panels. They should replace 04/04/2020 but the meter is in the room so they won't come and I can jump them. I wanted to use the installation without overproducing energy only for direct consumption, this is allowed by the Fronius inverter. Unfortunately, this meter is super intelligent and, despite the lack of overproduction, it counts direct consumption as if I were downloading from the network. How is it possible ??



    The panels must not be operated without a bidirectional counter
    Normal PGE meter It treats the solar inverter as a load and not as an electricity producer.
  • #27 18634248
    shrek565
    Level 9  
    I have the same problem and I don't know what to do.
    When starting the installation, the counter at position 1.8.0. if 1.8.1 (3866.3) stops punching despite running washing machine, heat pump and dishwasher.
    At position 2.8.0 or 2.8.1, he starts punching the kilowatts supplied to the net (11.5).
    And in item 1.5.8.0 it sums up the energy taken from the grid plus the energy given to the grid (3,877.8).
    With Energi there is still no message that the received instance, although everything works as if the meter was already reprogrammed to receive energy. I'm in despair too, and I don't know whether to run or not .......
    I have real settlements turned on and I always enter the status on the page from 1.8.0, which means that it would not reach this status ...
    below photos

    Norax 3 Photovoltaics: Is 3kW Installation & Energy Meter Suitable for Donated Energy? Norax 3 Photovoltaics: Is 3kW Installation & Energy Meter Suitable for Donated Energy? Norax 3 Photovoltaics: Is 3kW Installation & Energy Meter Suitable for Donated Energy?




    piwalek77 wrote:
    Hello,
    Today the installation of PV on my roof has been completed. The application to the ZE will be next week, and they are supposed to have a month to respond ... In addition, with the current development of the coronavirus, it may be even longer! Therefore, I feel sorry for the installation, which has to wait so long for it to start working on itself ...

    And here I have a question about the meter and its settings - it turns out that I already have a two-way meter (Norax3) installed, so theoretically I could return energy to the ZE right away. Of course, I will not be able to settle any surpluses until the contract is signed, but maybe at least I can use the generated energy on an ongoing basis? On the other hand, I am worried if the switched on installation will have the opposite effect - and it will not start to "punch" the meter ...

    So I did a little test and checked the OBIS codes:
    1.8.0 Imported active energy A +, sum => 21536
    2.8.0 Exported active energy A-, sum => 4
    15.8.0 Imported active energy | A |, sum => 21540

    So it looks like everything is working fine, but now I don't know if:
    - 2.8.0 shows the surplus itself or the total energy given away (everything I produced)?
    - what is the absolute reading 15.8.0 used for? - i.e.
    - what is the risk of leaving the installation on?

    My question boils down to the following example:
    If I use 5kW at a given moment and at the same time give away (produce) 2kW - will the reading of the consumed energy (1.8.0) be 5kWh or 3kWh?

    Best regards!
  • #28 18634346
    theo33
    Level 27  
    if the settlement was from 1.8.0 then ok it would be saving, but if from 1.5.8.0?

    and about "My question boils down to the following example:
    If at a given moment I am using 5kW and at the same time I give (produce) 2kW - will the reading of the consumed energy (1.8.0) be 5kWh or 3kWh? "
    If there were phase-to-phase balancing, 1.8.0) would register 3kWh
  • #29 18634431
    czaczus22
    Level 12  
    [quote = "theo33"] if the settlement was from 1.8.0 then ok, it would be saving, but if from 1.5.8.0?

    and about "My question boils down to the following example:
    If at a given moment I am using 5kW and at the same time I give (produce) 2kW - will the reading of the consumed energy (1.8.0) be 5kWh or 3kWh? "
    If there were phase-to-phase balancing, 1.8.0) would register 3kWh [/ quote

    Hi, you use the energy from the panels on an ongoing basis and give the surplus to the network

    At the G11 tariff
    1.8.0 the amount you have downloaded from the PGE network
    2.8.0 amount of energy transferred to PGE

    From the count of 2.8.0 you subtract 20% for PGE.
    Then it comes out how much energy you have clean.
    From the production of energy, you subtract the consumption of 1.8.0 and you get how much energy you have to collect in the winter.
    Until puk you do not have a contract for prosumers, you pay according to the old contract. Only after signing a new contract, for example, the overpayment is returned.
  • #30 18634521
    shrek565
    Level 9  
    czaczus22 wrote:
    At the G11 tariff
    1.8.0 the amount you have downloaded from the PGE network
    2.8.0 amount of energy transferred to PGE

    From the count of 2.8.0 you subtract 20% for PGE.
    Then it comes out how much energy you have clean.
    From the production of energy, you subtract the consumption of 1.8.0 and you get how much energy you have to collect in the winter.
    Until puk you do not have a contract for prosumers, you pay according to the old contract. Only after signing a new contract, for example, the overpayment is returned.


    Well, it is obvious to me.
    So if I do not have a contract, I can use the FV and what I give to the network will be lost at most, but I will be a plus from what I will produce and use during the day for my own use until I sign the contract?

Topic summary

✨ The discussion revolves around the suitability of the Norax 3 energy meter for measuring energy produced by a 3kW photovoltaic installation, particularly in the context of energy donation to the grid. Users confirm that the Norax 3 is a bidirectional meter capable of measuring both energy consumption and energy exported to the grid. However, concerns are raised regarding its programming, as some users report that the meter may not accurately reflect energy exported if not properly configured. The importance of notifying the grid operator about the photovoltaic installation is emphasized, as it may affect the meter's functionality and the user's ability to benefit from net metering. Additionally, users share experiences with different energy companies and the challenges of accessing remote readings and data from the meter.
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FAQ

TL;DR: A correctly-programmed Norax 3 shows export on register 2.8.0; values above 0.5 kWh h⁻¹ confirm bidirectionality. “If you don’t see 2.8.x, the meter adds export to import” [Elektroda, michalPV, post #21043653] Why it matters: mis-programming can inflate your bill by up to 20 % every billing cycle.

Quick Facts

• Accuracy class: 1 % (active energy) [Apator Norax 3 Datasheet]. • Max current: 5–100 A, 3-phase, 4-wire [Apator Norax 3 Datasheet]. • Key registers: 1.8.x import, 2.8.x export, 15.8.0 absolute sum [Elektroda, 3301, post #17916012] • Typical prosumer write-off: 20 % of exported kWh in net-metering ≤10 kW [Energy Act, Art.4g]. • Remote reading only in GSM/GPRS variant OTUS 3; base Norax 3 lacks this module [Elektroda, michalPV, post #21043653]

How do I confirm my Norax 3 is counting export separately?

Compare 1.8.0 and 2.8.0 over one sunny hour. A rise only in 2.8.0 means proper bidirectionality; a rise in 1.8.0 means mis-programming [Elektroda, bakupl, post #21046022]

Which OBIS codes matter for a G11/G12 prosumer?

1.8.0 (total import), 1.8.1/1.8.2 (WT/NT import), 2.8.0 (total export), 2.8.1/2.8.2 (WT/NT export), and 15.8.0 (absolute energy) [Elektroda, Viszna, post #18457049]

What if only 1.8.x is visible and 2.8.x is missing?

Exported energy will add to 1.8.0, inflating consumption. Request re-programming or meter swap; one user saw this on an un-reprogrammed unit [Elektroda, janekk77, post #18635141]

Can Norax 3 balance energy between phases?

Yes, vector (inter-phase) balancing is supported; 5 kW export on L1 can offset 5 kW import on L2 within the meter’s algorithm [Elektroda, and_you, post #18769942]

Is Internet monitoring possible with Norax 3?

Only the GPRS-equipped OTUS/Norax variant supports remote reading; the standard Norax 3 lacks that modem, so operators send collectors or manual uploads [Elektroda, marcinbbb, post #18265303]

Will turning on PV before signing the prosumer contract cause penalties?

Yes. Feeding the grid without an annex can trigger fines; operators see uncontracted export in 2.8.0 [Elektroda, rsv6, post #18634570]

How does the 20 % write-off work in Polish net-metering?

For ≤10 kW systems, you receive 0.8 kWh credit per 1 kWh exported; larger systems get 0.7 kWh. That deduction appears on your settlement, not on the meter itself [Energy Act, Art.4g].

What is 15.8.0 and why is it higher than 1.8.0?

15.8.0 records absolute energy flow (|import|+|export|). It will always exceed or equal 1.8.0 because it adds both directions [Elektroda, piwalek77, post #18584945]

Edge case: Can the meter count PV generation as consumption even with 2.8.0 present?

If programmed for “absolute” billing, the DSO may read 15.8.0 instead of 1.8.0, charging you for both flows; one user reported this mis-billing risk [Elektroda, theo33, post #18634346]

How do I run a quick three-step test of meter direction?

  1. Write down 1.8.0, 2.8.0. 2. Disconnect house loads (leave inverter on). 3. After 10 minutes, only 2.8.0 should rise. If 1.8.0 rises, call your DSO for re-programming [Elektroda, cdtdsilva, post #21062501]

What is the maximum current Norax 3 can handle?

The meter is rated for 5–100 A per phase, class 1 accuracy [Apator Norax 3 Datasheet].

Does Norax 3 support remote disconnection?

Only OTUS 3 carries a built-in contactor for remote cut-off; base Norax 3 models lack this feature [Elektroda, and_you, post #18769942]

Statistic: How much export did users log in the first month?

One ENERGA prosumer recorded 90.8 kWh export against 139.6 kWh produced—65 % self-consumed [Elektroda, Viszna, post #18457049]

Failure fact: What happens if you run PV on a unidirectional Corax/Norax?

The meter adds export to import, so every kWh you generate is billed; Apator support calls this “absolute value” mode [Elektroda, derekk, post #18635204]
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