Interested to Buy Any Domain ? << Click Here >> for more details...
I have a 600VA UPS for computer only. It holds for
20minutes only.
1. Can it be upgraded for longer period.?
2. Can it be used for one ceiling fan and a tube light? If
yes, how to upgrade?
- 11 Answers
- 41145 Views
- I also Faced
- E-Mail Answers
Answer Posted / ehsan rabbi
u r telling that it holds for 20 mins. But in practice it
doesnt last more than 4/5 mins. does it ? Actually it
depends. A 600 VA UPS running from a typical 12 volts 7.5Ah
battery can handle 600 x 0.8(pf)x75%(eff)=360 watts of load
only. There are many other facts that im not breaking down
right now.
The fact is simply this. U can prolong your backup time by
adding higher ampere-hour battery like 12 volt 8Ah or
maximum 12 volt 12Ah but not more. If u want more backup
u'll need much higher AH rated battery (like 40Ah) and at
the same time u must upgrade your battery charger to a
higher level otherwise those heavy batteries will take
forever to charge fully /partially or whatever. Bottom line
is u just have to spend more bucks not only for battery but
also the built in circuitry mounted with the UPS.
Both the ceiling fan and tube lights(which includes
ballast)have raw power factors (0.6~0.75) That means an 80
watts fan can consume upto 115 watts of power. To drive
those loads u not only need high amps battery but also high
volt-ampere machine (eg. 1200 VA)
| Is This Answer Correct ? | 18 Yes | 2 No |
Post New Answer View All Answers
How colour picturetube works & how many year it will works.
we have a rewind motor of 2Hp,2800Rpm, 220Volt AC. how can we choose the running capacitor for this motor, any formula for that?
why high speed tripping relay is used in protection circuit why not normal relay
What is Load sharing of Transformer ?
can you plz send l&t aptitude questions if available its urgent plz plz plz
How to calculate the time setting for star connection in star delta starter? For example 10KW 3PH Induction motor.
How to justify this statement ??? "Capacitors in series provide less capacitance but higher voltage breakdown rating for the combination"
What are the electrical engineer roles and responsibilities in chemical plant?
How can we calculate the KVA rating of a Distribution transformer from its core details?
explain comutator action in detail.thanks
what about the power of wattmeter at starting and loding?
what is the saturation point of crgo lamination.
1))why we run three phase or three different circuit from a single conduit 2)) why not two circuit of different phase run in same conduit?? and why we run same three cicuit of same phae run in single conduit??
What is contract demand in solar system?
when will be the iocl interview results i faced interview on 8th september 2008 iam from electrical branch i faced interview for the post of electrical engineer??????????????????????//
