ups

  1. A

    Can you measure the grounding on an UPS output?

    Just installed an UPS and I have a multi-meter that I use to check if a wall outlet is grounded Just tried it on one of the UPS outlets (2 prong) by placing the multi-meter red probe to the metal and the black one to the right side of the outlet and it reads 0 Is this normal? Same measurement...
  2. Designmen90

    Mains and UPS disconection

    Hello everyone, here I have some problem with schematics (schematic attached). The SK_2 is circuit for disconecting main lines and UPS. So, I guess that S2 is a muschroom on switchboard's door, which will disconnect the Q1 circuit breaker. But, what should be K1 (24VDC). Is this relay used for...
  3. Rockingit

    Very small footprint, 3-4kva 1 or 3ph UPS - recommendations?

    Need to find a v small, hard wired, wall mounted UPS to provide 60mins for fire alarm, emergency lights and fire suppressant (mist) in a BMO to satisfy the requirements of section 560. Phone calls and catalogues so far have only found me massive plant room size, I need to fit this in a...
  4. P

    Reliable UPS suggestions?

    A UPS' job is to provide reliable power in the event of a maind outage/disturbance, but the Dell-branded APCs we have are less reliable than the mains. They were bought some 3 or so years ago, have had failures and been replaced (also one battery pack as they are not compatible with the...
  5. jackhammerJIM

    UPS Fault

    Good evening all . I am hoping someone can shed some light on a reoccurring problem in a mains room we are working in . The problem being the UPS modules display a general wiring fault whenever the ATS switches from generator back to mains . So far the UPS manufacturer and generator company...
  6. T

    Pick ups...

    Does anyone have pictures on how they use there pickup for work? I know they are very impratical.... But hey! Why not
  7. P

    Floating neutral and UPS

    Here is my dilemma. Picture this arrangement: a system with a 100A three-phase supply will have a RCD incomer (and possible some generator transfer switch in the future). As well as the SWA supply cable's earth there will also be some lightning protection so a few earth rods as well. From the...
  8. H

    My Eaton UPS 9390 120KVA is malfunction with bypass

    My Eaton UPS 9390 120KVA is malfunction. The active alarm now is “ALRM: CHECK BYPASS SWITCH” . We get the following status/alarm logs when we try to power UPS and press BYPASS at menu on display: 1. When power on UPS: - STATUS: CONTROL POWER STATUS ON - ALARM...
  9. K

    Roller shutters UPS advise

    Good morning , My name is Martin and I hope someone can help. I am planning to install domestic roller shutter onto our home. At first , I was going to appoint an electrician to run the wiring from the shutter motors to the lighting circuit, but then I realized that I need an emergency power...
  10. M

    Small central UPS for converting circuit to emergency lighting

    I am looking for a product to convert an existing lighting circuit in a communal stairwell to be emergency battery backed up. There are 6x 7W LED mains fittings, so say a max 50W load. I could just add emergency lighting fittings, but wiring and access is difficult. It also needs to have a...
    • Martin
    • Thread
    • central circuit emergency emergency lighting lighting small ups
    • Replies: 9
    • Forum: Lighting Forum
  11. A

    UPS protection

    Hi everyone, would be great if you can share your experience on type of protection devices recommended on UPS system feeder/upstream? as you know, in some type of critical installations such as hospitals, bank servers,..etc, the client does not want to see UPS loads gets cuts off in no...
  12. Pete999

    Punch ups on site ! ! !

    Working on a laege housing development in Bath I was just 16, chap I was working with was a bit of a loose cannon, you didn't mess with Terry. Any how we used to run cables down cavities in those days, we had finished wiring this particular house, and we had used the opening where the chippy was...
  13. E

    UPS voltage Rating Specs

    Hi Guys, In IT UPS back up systems is there a general upper voltage rating before the device will compensate for overvoltage or is it down to each manufacturers spec. Have been experiencing reports claiming they have been alerted of overvoltages. This I will need to check out. Many Thanks!
  14. Rom

    Replacing UPS batteries produce a spark

    I'm having some problems with my PC's uninterpretable power supply. It came with two 12v 9Ah batteries that aren't charging anymore so I've decided to replace them with higher capacity batteries that are 12v 12Ah. The old batteries were connected in serial (plus to minus) but if I try to connect...
  15. D

    UPS - input rating vs output load

    with a single UPS rated at 8KVA, 230v, stating maximum input current of 44A, would the over current device, cable size etc be based on the 8KVA installed load (the UPS), or, the actual load of 8A, connected to the output of the UPS ? this is a fixed installation, supplying computer based loads...
  16. Doomed

    Which UPS to use (use use use)

    Do work at local care home, after recent power cut they are after UPS units for thier air mattresses (the sort that prevent bed sores). Any suggestions? All the ones I can find seem to be aimed at IT uses. They are also after a back up for the electrical supplies to the gas boilers for the hot...
  17. Davisonp

    Any Recomendations for a UPS Power Supply?

    Hi, Can anyone recommend a low cost UPS to clean up a power supply? Also, I was wondering if a UPS would synchronise the output sine wave phase to the input phase?
  18. J

    Uninterruptible Power Supplies (UPS)

    For a 240 AC volt house, sometimes the light goes off, to prevent my modern TV (54Watt), DVD player, Playstation, Xbox from damage. Can you please recommend a good UPS. Is it just a case of adding the wattage of each device together. I have 5 rooms each room contains an air-condition, TV...
  19. DPG

    UPS spec - help required.

    Morning all, and happy Friday! I've been asked my advice on what UPS would be suitable to run an ICT machine (ICT=In Circuit Test, it's machine that tests electronic PCB assemblies). Now it is fed from a standard 3 phase supply, but I am confused a little by the rating plate - I've attached a...
    • DPG
    • Thread
    • attach machine phase plate required though ups
    • Replies: 28
    • Forum: UK Electrical Forum
  20. K

    Backup switching - UPS

    Hi All, I am looking some advice regarding what device/s would be required to do the following: I have a fairly heavy duty UPS (APC 2200VA, supports max of 1980 Watts - it's pure sine wave if that makes a difference). There are a few electrical items attached, totalling no more than 150 Watts...
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