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Discuss Current Frequency Counter - Wiring and Setup in the Electrical Forum area at ElectrciansForums.co.uk.

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  1. Aetherium
    Offline

    Aetherium New EF Member

    Location:
    Stockholm
    The current frequency counter we ordered on Amazon has just arrived, with a vague and minimal setup manual [attached image], and no wiring diagram.

    On the back panel there are 2 sets of wiring connections
    labelled - Input : 5 (-) 4 (+) and Power 1 2

    The input appears to be 12 VDC, so 12 volt DC adapter wires have been connected to the input.

    We're reluctant to connect L1 and Neutral to the power socket without a wiring diagram.

    The intended use of the meter is strictly as a 50 Hz current frequency counter, wired in
    parallel with a load circuit, so no other functions are needed.

    The metered current is at 230 VAC and less than 5 A
    although the meter seems to be rated for 220 VAC.

    If anyone here knows the correct wiring connections for L1 and Neutral,
    and how to setup the meter for Hz, any help would be very much appreciated.

    FreqCounter.jpg

    manual.jpg
     
    Last edited: Aug 11, 2017 at 2:50 PM
  2. DPG
    Offline

    DPG Electrician's Arms

    Location:
    S Yorkshire
    Can't believe there is no wiring diagram! Have you tried Googling for 'REHE current meter' to see if there is one one line?
     
  3. Aetherium
    Offline

    Aetherium New EF Member

    Location:
    Stockholm
    It's very odd indeed.

    We ordered several types of meter with 7-segment LED display :
    Voltage, Current, Energy, Power, Frequency... All made in China
    and not a single one included a wiring diagram or a proper manual.

    Contacting the seller was futile.

    Searching for a diagram to this model resulted in no hits what-so-ever.
     
  4. Vortigern
    Offline

    Vortigern Electrician's Arms

    Location:
    England
    Business Name:
    F.H. Electrical
    Well...Ahem...reading the part about "Attention before using" especially at 2:Wiring of terminals shall be checked firmly and correctly before electrified, suggests not as much thought has gone into this product as one would normally expect. I guess it's CE. Send it back. After all it does say wiring diagram: refer to real article, what more do you need. Send it back!
     
  5. static zap
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    static zap Regular EF Member

    Location:
    west midlands
    Last edited: Aug 11, 2017 at 10:24 PM
  6. snowhead
    Offline

    snowhead Trusted Advisor

    Location:
    Mildlands
  7. sean_ork
    Offline

    sean_ork Regular EF Member

    It's designed to be used with a CT - so one set of terminals is for the CT, the other pair is for supply, from which the frequency is derived.
     
  8. Aetherium
    Offline

    Aetherium New EF Member

    Location:
    Stockholm
    It will very likely be sent back, if we don't receive a wiring diagram
    in the next few days.

    Thanks for the link!. These diagrams seem to indicate that 1 = L
    and 2 = N on the power connectors.

    In any case, we will wait for the wiring diagram before connecting power.

    Thank you! I will put this email to good use straight away.

    Ahaa! So the Input connectors are designed for a current transformer?
     
    • Like Like x 1
    Last edited: Aug 12, 2017 at 11:39 AM
  9. sean_ork
    Offline

    sean_ork Regular EF Member

    The instructions as posted very clearly make mention of CT and current transformer - so the first task will be to identify which set of terminals are for mains incoming, and which are for the CT.

    The next task seems to be telling that POS what the CT ratio is.
     
  10. StephenRowley
    Online

    StephenRowley Active EF Member

    Location:
    Leeds
    Cant say I'd trust that thign
     
  11. StephenRowley
    Online

    StephenRowley Active EF Member

    Location:
    Leeds
    What are regs regarding installing potential dangerous equipment like that ?
     
  12. sean_ork
    Offline

    sean_ork Regular EF Member

    If you have to ask questions like that, you really shouldn't be installing equipment like that.
     
  13. Aetherium
    Offline

    Aetherium New EF Member

    Location:
    Stockholm
    UPDATE >

    SUCCESS!

    Thanks to all your comments and links - I had enough information
    to attempt connection of mains and CT to the INPUT and POWER terminals.

    And.. It works perfectly*

    I drew and uploaded the correct wiring diagram (shown below)
    in case anyone is confronted with the same dilemma in future.

    On a side note... The metered current frequency is 49.99 Hz
    So, either the meter needs calibrating, or the mains frequency is 0.02% below 50 Hz.

    RHF61J_Wiring_Diagram.png
     
    • Like Like x 1
    Last edited: Aug 12, 2017 at 2:18 PM
  14. davesparks
    Offline

    davesparks Trusted Advisor

    Location:
    guildford
    That is perfectly normal, the frequency will vary slightly as loading changes on the national grid.
    There is a realtime frequency monitor somewhere on the national grids website.
     
    • Like Like x 1
  15. Vortigern
    Offline

    Vortigern Electrician's Arms

    Location:
    England
    Business Name:
    F.H. Electrical
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