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  1. marconi

    Capacitor in AC circuit

    This graph gives a major distortion of the visual relationship between the independent variable of frequency along the horizontal axis and the dependent variable of reactance along the vertical y axis because it uses markedly different numerical/distance scaling along each axis. If you use the...
  2. marconi

    This is going to take me weeks.....

    littlespark - After just over a week you have 808 views. Well done Sir. Folk are reading your posts with interest. Do you keep a before and after record - written or photo - of the corrections you do for free or billed? Do you do IR surveillance? ie: Infrared Electrical Inspection...
  3. marconi

    Ex Royal Signals Command and Control Bunker

    Term/D terminator - http://www.fdb.uk.com/project/termd/ At the load end one could simply connect the pilot conductor and the cpc/earth together. Such a connection would have zero impedance. All well and good unless upstream there is a cable fault and for some reason the pilot and cpc/earth...
  4. marconi

    Ex Royal Signals Command and Control Bunker

    https://www.blakley.co.uk/wp-content/uploads/PDS052_ECM_Series.pdf https://www.dmp.wa.gov.au/Safety/Guidance-about-trailing-and-6364.aspx ECM is earth continuity monitoring by making a current loop comprising of cpc/earth between supply to load and a pilot wire from load end of cpc/earth back...
  5. marconi

    defrost timer for fridge freezer

    You asked: So my question is does something halt the timer (defrost terminator?) by sending a live to terminal 1 which feeds the capacitor if it is heavily frosted in the freezer? am i best manually defrosting freezer and see if this makes a difference ' The answer is yes the motor for the...
  6. marconi

    defrost timer for fridge freezer

    Seems to me you have connected the 4 connections wrongly. Draw me a picture and attach some photos. I notice this freezer is old - 21 feb 2012 - 11 years ago. I'd buy a new one.
  7. marconi

    Why does my main house consumer unit trip when the inverter switched to AC backup?

    Those voltage checks for the two programs were to ensure there is some hysteresis between switching from utility to load in lieu of battery when battery voltage is 'low' and battery to load when its voltage is 'high' in lieu of utility. Without a voltage difference between the switch over...
  8. marconi

    Why does my main house consumer unit trip when the inverter switched to AC backup?

    I will find out.
  9. marconi

    This is going to take me weeks.....

    Some less experienced folk will learn much from how you approached this job. You're a top man.
  10. marconi

    Why does my main house consumer unit trip when the inverter switched to AC backup?

    Thank you. I will study what you have said. What do you have set for Program 12 page 18? To attach a video you need to convert it to mp4. Dead easy once you know how. Try: Online video converter to MP4 - https://video.online-convert.com/convert-to-mp4
  11. marconi

    This is going to take me weeks.....

    It would be interesting to follow your work via some short video diary reports. Bound to be interesting if only to chat with the people who work there.
  12. marconi

    Why does my main house consumer unit trip when the inverter switched to AC backup?

    Re: Program 13 page 19 'Setting voltage point back to battery mode when selecting “SBU” (SBU priority)' in program 01' of the manual reference in my #77 - what voltage do you have set as the threshold for point back?
  13. marconi

    Why does my main house consumer unit trip when the inverter switched to AC backup?

    Thank you. As you say the charging current limits are already low at 10A so a very high charging current is not the cause of F12 as I mused it might be. I was 'hoping' you would say 60 to 120A! Could you tell me the edition of software your Axpert inverter box is running please? Are you or...
  14. marconi

    Why does my main house consumer unit trip when the inverter switched to AC backup?

    https://content.storefront7.co.za/stores/za.co.storefront7.rctzone/products/rct-axmk4-56k48v/documents/rct-axpert-mks-iv-manual.pdf see page 15 Program 2 - Maximum charging current (which is solar and utility currents). What do you have set? Try reducing maximum charging current. If it is...
  15. marconi

    Why does my main house consumer unit trip when the inverter switched to AC backup?

    To observe a voltage between the PV input terminals when the array is disconnected from them and the inverter is producing an ac output using power form the battery is normal. The solar inverter is transformerless which means there is no air gap between the dc inputs (PV and battery) and the ac...
  16. marconi

    Why does my main house consumer unit trip when the inverter switched to AC backup?

    Have you reported the state of the inverter on/off correctly for voltages 1 and 2 above? I would expect voltage 2 when the inverter is off to be round about 7 x 50 = 350V and voltage 1 when the inverter is on and MPPT operating to be lower eg your reading of 246V. The open circuit voltage of a...
  17. marconi

    Why does my main house consumer unit trip when the inverter switched to AC backup?

    Please send me a link to what you have read on earthing on the V Ltd website. The earthing and bonding of your installation is something we need to get right mindful that your supply is PME which has restrictions on using the Main Earth Terminal (MET) outside the 'equipotential zone' generally...
  18. marconi

    Why does my main house consumer unit trip when the inverter switched to AC backup?

    I think those voltage measurements are unsurprising but to be sure would you draw me a diagram which shows accurately what each earth terminal is connected to and between? Also show how you made your voltage measurements and the readings. I normally do this by a V in a circle with two...
  19. marconi

    Why does my main house consumer unit trip when the inverter switched to AC backup?

    Thank you. I will study over the next day or so. I am in email dialogue with V Ltd but making slow (no) progress. I have copied you PM the latest emails which change the tone a little to indicate I am not getting the thinking and answers I want from them. For this reason they are not in the...
  20. marconi

    Why does my main house consumer unit trip when the inverter switched to AC backup?

    Latest email to Voltacon Ltd including these three links: To: [email protected]; 27/02/2023 07:23 1 Axpert Inverter - Who has stock - Page 5 - https://www.4x4community.co.za/forum/showthread.php/223750-Axpert-Inverter-Who-has-stock/page5 TN-S Earthing for Off Grid Inverter. Neutral-Ground...

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