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  1. M

    Testing a UPS system??

    Looking for a bit if info and advice? Firstly like to say I have never tested on of these systems before but have been asked to do a job with one installed? Am I right in saying that I need the correct software on a laptop to start with??
  2. H

    centeral battery UPS system

    Can an MCB be used instead of an RCBO for a supply to a UPS centeral battery system if the required disconnection times are met?
  3. C

    UPS system earth

    Hello! I have some questions about how the earthing of a one phase system. We want to connect this system to the national grid (will be in Tanzania but grid should work the same) while also having a battery bank giving energy. So the principles are about the same as for a ups system besides not...
  4. S

    Three Phase to Single phase Online UPS with a capacity of 15KV

    I want to build a three phase to single phase online UPS with a capacity of 15kv that can hold a backup for 15 minutes. Can anybody provide with specific circuit diagram, technical specification and stepwise instructions to do that? Thank you!
  5. G

    Generator + UPS Woes

    Greetings, I'm in the Philippines and have an office full of PCs that need to run with as little interruption as possible. Power is pretty reliable here in general, but we have rotational blackouts for an hour a day at the moment due to a regional shortage caused by damage from the typhoon in...
  6. i=p/u

    Testing ups sockets...

    Any dos and don't I should be aware of???? Or experiences.
  7. S

    Generator set with ATS and UPS

    Hi guys, been wiring up a 3ph 20kva generator set and auto transfer switch, mains supply is 3ph TN-C-S 80a cut outs, the set is a Perkins with deep sea electronics 6120 controller. The set runs ok until I turn on the circuit (ring final) that has the ups's in the server room on, the load is...
  8. G

    Zs Readings from a 20KVA UPS system

    Hi peeps I have been asked to test a 'continuous' 20KVA UPS system. Which means the supply goes through the UPS first, and in effect with loss of power you will have changeover instantly. The consultant has suggested to just get the dead readings, and calculate. Whilst I am happy doing this, I...
  9. S

    To Buy Solar UPS

    In India the power is major problem. So I want to move to the green energy (Solar Energy). Is any ups manufactures provide Solar UPS in India?
  10. 1

    Security Roller Shutter doors on 1300VA UPS

    Hello, I have been asked by a customer to provide a backup power supply for his roller shutter doors that protect his property. The motors that supply the shutter doors are a maximum 600W 230V AC (2.6A or 600VA) I have never been asked to provide a UPS for anything motor related. The need...
  11. S

    new start ups

    It's been a few months since I took the plunge and registered and set up on my own. Things are picking up, slowly but I did this with a medium term plan to have an established income stream by year 3. I have a local builder who sources out his electrical work to me 3/4 jobs per month I'm...
  12. J

    Advice needed please ups systems

    Hello All Iam installing a Small 8kva UPS we are ruuning a 50A supply to a sub board in the comms room where the UPS is then we we supply the UPS from that sub board. When testing Continuity R1 R2 on a 3 phase supply can i just test from the live conductors to earth 1 ant a time and note the...
  13. J

    Clean earth on UPS

    Hello All Within the next few weeks i am installing a small UPS in a comms room. The spec was to install a 5OA supply to feed the ups. Iam install a small Merlin Gerin TPN sub board in the comms room. There is a clean earth bar within the comms room. Would i take the earth from there for...
  14. J

    Newbie question, installing UPS at fuse board

    HI, I'm brand new and not an electrician so please accept my apologies for what might be a truly idiot question. In the past month, we have experienced a series of short (less than 2 seconds) power outages. These happen at random, often at night but sometimes during the day. The entire street...
  15. C

    Metrel eurotest xe & UPS odd readings???

    Hi all, I'm testing an unoccupied office block and I'm having some major grief with my tester trying to get Zs readings. The place was a call centrre for a computer related firm and as well as the normal supply it has a gert UPS in the plant room (p.resumably to keep the servers etc up and...
  16. J

    UPS Install

    Hi All I was asked to run a new supply in a comms room for a small IT service 1x 32A commando socket. When i gained access to the comms room today to look at what i thought would be a straight forward job. It was a 8kVA ups sitting there not a small comms rack. The data on the UPS states...
  17. P

    Pat testing UPS

    Hi,i will be starting a new job in a weeks time,which involves a certain amount of PAT testing.As my experience lies within the Industrial sector i was wondering if any of you guys could offer some advice / guidance on how to test UPS.Thanking you all in advance.
  18. C

    500KVA UPS transformer scrappage

    Hi Everyone! I am currently working on a job that requires downgrading 3 no. UPS systems 500KVA to 350KVA systems. We have today removed the old 500KVA systems that included 3 no. transformer panels. Each panel has two transformers inside, one weighing 900kg and the second 1250kg. What is...
  19. B

    Any one completed the job write ups for their JTL Portfolio???

    Hi people,, I have finally completed my 3years at college and so far done all the underpinning knoledge questions apart from my job write ups and my AM2. Is their anyone out their that can possably send me a copy of thiers or an example sheet so that i can get an idea of what needs to be put...
  20. rmaynard

    can anyone suggest a UPS for a roller shutter

    as above, has been asked to quote and install a UPS device for a security shutter at my local doctors surgery. Problem they have is they are looked out if theres a power cut as there is no manual crank. ideas please

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