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  1. polo1

    Testing of an RFC linked to a UPS

    Hi all, bit of advice please - as the title, I have been asked to test a RFC which is served by a UPS. It's in an alarm receiving center. Any advice on what I need to watch out for, testing protocols etc? Not workred on this kind of set up before. Regards.
  2. S

    UPS supply

    Been to look at a job for a client who has acquired a large EATON powerware 9390 UPS. Any tips on installing this? It will control the 3 phase D/B for his large computer suite.
  3. W

    UPS and IPS....

    Hi there, I know that a UPS is an Uninterruptable Power Supply and is a battery backup for a mains failure, but what is the difference between UPS and IPS? I have seen IPS being referred to as Isolated Power Suppy, Instant Power Supply, Integrated Power Supply and Isolated Power Supply. Which...
  4. T

    Earth fault loop impedance readings through a UPS supply

    Does anyone have any experience in recording values of EFLI on circuits fed through a DB supplied via a UPS please? The meter shows the above scale arrow. I understand that there will be no reference to the external earth due to the inverter inside the UPS but what will happen to the UPS...
  5. D

    UPS and three way bypass switch...

    Don't know if anyone can give some insight on this: UPS and a three way bypass switch:<br>Position 1 - &nbsp;Normal (UPS Power)<br>Position 2 - &nbsp;Bypass &amp; UPS (Mains Power / UPS On)<br>Position 3 - &nbsp;Bypass (Mains Power / UPS Off)<br><br>What could overload the UPS and cause it to...
  6. silver surfer

    Earth loop tests on circuits with UPS backup

    What is the proper procedure for ELI testing circuits with UPS back up, ie radial circuits under computor room floors? Do you test with the mains bypass connected? with the UPS/ mains in normal operation? or in UPS status only?, ie mains failure. Thanks.
  7. Z

    UPS Battery Run Time

    I need some calculation on based of following findings: UPS rating = 1200 Watt Battery Rating = 1300 Ah Total Connected Load = 1000VA Operating Voltage = 240 V Can anyone please calculate for how long battery will provide power to the load ( i mean run time) ? Please show full...
  8. T

    has anyone installed a ups battery back up system?

    Hi everyone wondered if anyone has ever installed a ups battery back up for a circuit. A client wants a dedicated ring main for his computers running with a ups system! Any tips? Any product recommendation? thanks
  9. J

    ups cab best offers gets it

    got a symmetra power array apc controlled ups cab 6x triple bats and changeover controlles all working just unistalled it today i have pic text ur email to 07793185601 for pics like i said best offer buys it and buyer collects from brighton
  10. H

    Ups system for emergency lighting

    Has anybody had any dealings with having to install any of these? I understand that they are used within hospitals and schools... My question is do they do a system which is small enough to be viable for the common areas within four flats? It only need to run 500w of lighting... Thanks
  11. T

    UPS Earthing

    Does anyone out there get involved with UPS standby supplies, I am particularly interested in earthing and how a UPS reacts to fault current, any hands on knowledge or pointers towards published articles on thos subject will be greatly appreciated:confused:
  12. M

    Is there UPS (uninterruptible power supply) that can supply power to mains plugs?

    Hi there- does anyone here know if there's a UPS unit that exists that can supply power to other mains plugs, not just the 'kettle' plugs for peripherals? i.e. something that can be charged and stores electricity, into which you can plug a device with a mains 3 pin sockets when in an area with...
  13. F

    Ups

    Anyone know about UPS systems? if so would you be able to point me in the direction of good source's of information. Many Thanks
  14. L

    smart relay & ups

    hi all i have a telemecanique zelio smart relay and ive got it running on a 600va ups but for some reason it doesnt like it when power fails, the screen just goes blank but i do have 230 at the input terminals. anyone have any idea why? i have tried changing the ups and still the same problem...
  15. G

    Home baked UPS

    Greetings, I have a small internet cafe in the Philippines, and the electricity supply is very unreliable. We have unscheduled blackouts at least a couple of times a week for a few hours and a scheduled 8 hour blackout every second Sunday. It's rubbish. I'm trying to assess whether it would...
  16. S

    UPS- 1+1 parallel scheme or hotstandby scheme

    Which one suits better in petrochemical industries- a 1+1 parallel redundant, a 1+1 parallel non redundant or a hot standby scheme of UPS. In the plant where i work its a hot standby scheme in use. Suggest some good UPS available in market as well, if happen to come across any of'coursey:cool:
  17. P

    ups

    how dose a ups work ? are the batts being charged and you get power from batts ,or a instant change over whan there is a powercut,:confused: how dose it work that its uninterupted power?
  18. E

    UPS over load

    Hi every body, I face probelm during comissioning of one project , and I hope that I will find answer here. My system is like this: I have 200Kva UPS feeding 100Kva Step-Up Trnasformer. this step up tr feeding 3 s/dawn transformers step/up is y-delta connection from UPS DP I connect...
  19. P

    ups

    Hi all I need someone to help me i have just done the inspection and testing on a industria property which has a generator and ups batts. the ups batts have protection by 250a fuses but the neutral have 250A fuses to, if the ups was running and there was a fault which has a 50% chance of...
  20. G

    UPS decommissioning - Best Power S4000

    Hi, I have been asked by my boss to look into whats involved with decommissioning a large UPS system for a customer. I have an HND Electronics but no high voltage experience. Can anyone guide me as to what to do? Even if it's to say "No, get someone who's qualified" The UPS to be deinstalled...

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