Summers=No Electricity and Electricity=Low voltage..HELP!

[sam9s]

Step 2: Convert total wattage in to VA using formula: Total Watts x 1.67
2000 W x 1.67 = 3340 VA

I do it differently.........

Just for the informatio sake.....

as we all know VA stands for volt amper.....
In AC the volts and amps are not always in phase, the peak of voltage curve and the current curve are not always same................So in AC, if the volts and amps are not in phase you have to calculate the watts by multiplying the volts into amps at each moment in time and take the average over time. The ratio between the VA and Watts is called the power factor PF.........so

VAPF = Watts

How do we find PF....

High end electronic equipment are Power Factor corrected where it usually more than 90%, where VA simply becomes almost equalt to Watts. But general home equipment the PF as a thumb rule is taken to be 60%....so the formulla becomes,,,

VA x 0.6 = WATT

VA = WATT/0.6

VA = 2000/0.6 = 3333

Which is what santhosh also has calculate above.......

 

[sam9s]

Apologies for bumping the thread, But I am absolutely unable to find any dealer for KRYKARD or VERTEX in Delhi NCR. I called the distributer in delhi for Krykard and he says he is no more dealing with Krykard.

Anybody who is using any of these servos in delhi can point me in the right direction. I will anyhow call down south and see if they can provide me any dealer link in Delhi NCR

 

[adder]

Apologies for bumping the thread, But I am absolutely unable to find any dealer for KRYKARD or VERTEX in Delhi NCR. I called the distributer in delhi for Krykard and he says he is no more dealing with Krykard.

Anybody who is using any of these servos in delhi can point me in the right direction. I will anyhow call down south and see if they can provide me any dealer link in Delhi NCR

v guard digi series can handle low input voltage of 140v and will give a output of 168v around 180v output when input is 150v.

 

[avidyarthy]

Last night, got a scare myself.

The Pioneer AVR was shutting down and coming on again while listening on the FM radio. It was running for 10 seconds, then shutting down for 5 seconds, then coming back again. I switched to the CD mode, again the same issue repeated.

Closed down the unit with a heavy heart. Was thinking of the worst scenario ... power board failure inside the AVR.

This morning, tried it again ........ and lo .... the AVR was operating fine. Believe this could have happened due to (possibly) low voltage during the night. Seriously, am thinking of adding a stabilizer .........

Your valuable inputs required ..... similar experiences with any of you guys??

 

[anm]

Damn, I faced the same problem last night. I was back from a very hectic and tense week/ weekend and wanted to listen to some music when I came back from office. The voltage was so damn low I gave up.
I definitely need an all battery setup or low powered setup - waiting for an amp for my hd 650

 

[avidyarthy]

Bought the V Guard VD400 .... 4 KVA digital stabilizer.

Detailed report on the Stabilizer price thread.

 

[sam9s]

Last night, got a scare myself.

The Pioneer AVR was shutting down and coming on again while listening on the FM radio. It was running for 10 seconds, then shutting down for 5 seconds, then coming back again. I switched to the CD mode, again the same issue repeated.

Closed down the unit with a heavy heart. Was thinking of the worst scenario ... power board failure inside the AVR.

This morning, tried it again ........ and lo .... the AVR was operating fine. Believe this could have happened due to (possibly) low voltage during the night. Seriously, am thinking of adding a stabilizer .........

Your valuable inputs required ..... similar experiences with any of you guys??

This was happening with me for a long time and I was like just ignoring it ..... my bad finally I had to pay the price ... the AVR small transformer went kaput and it was dead ... :-( . Had to take to the service center ... luckly it was in warrenty and the unit was replaced in no time ......

Finally decided to take the plunge ..... and went straight for 2KVA Microtek Online UPS .... (No stabilizers, CVT, SERVO nothing) simple plain Online UPS, best solution ....... connected my AVR, computer and LCD with it and now it is like a huge relief ...... whatever happens ...... low voltage (as low as 120), fluctuations, power cut, trip overs ...... this thing takes care of it all ...... Good product ... recommended......

 

[Kittu]

This was happening with me for a long time and I was like just ignoring it ..... my bad finally I had to pay the price ... the AVR small transformer went kaput and it was dead ... :-( . Had to take to the service center ... luckly it was in warrenty and the unit was replaced in no time ......

Finally decided to take the plunge ..... and went straight for 2KVA Microtek Online UPS .... (No stabilizers, CVT, SERVO nothing) simple plain Online UPS, best solution ....... connected my AVR, computer and LCD with it and now it is like a huge relief ...... whatever happens ...... low voltage (as low as 120), fluctuations, power cut, trip overs ...... this thing takes care of it all ...... Good product ... recommended......

Nice deal what price you paid for it?

 

[sam9s]

^^ 20K including 6 Solid state Batteries and their trolley

 

[avidyarthy]

My 'electrical' funda is not very clear .... hence putting it here, for corrections, in case required.

Is an UPS operation similar or same to the domestic inverter??? ... obviously, am not taking the batteries into this ...

If so, then better watch out ..... direct connections of the AVR with an inverter is considered extremely detrimental .... "micro-period extreme power surges".

 

[sam9s]

UPS and inverter are different ... infact under UPS as well we have offline and Online UPS, Online UPS is the safest and also the most expensive ....

 

[Thad E Ginathom]

This always confuses me: "online" always draws power from the batteries, so there is no switching, right? Or is it the other way around?

What about line-interactive?

Sorry: I know these are FAQs. They must be, because even I frequently ask them!

 

[avidyarthy]

Thad ......

Google "online versus offline UPS" .... you would get the answer in detail.

Agreed, online UPS is superior, but that damn thing is not 'technically' easy, since the mains feed the electricity to the batteries direct .... Now, suppose, one battery in the battery bank misbehaves, then ...?

 

[Thad E Ginathom]

Google "online versus offline UPS" .... you would get the answer in detail.

I should have thought of that! Yes, have done so now

 

[sam9s]

This always confuses me: "online" always draws power from the batteries, so there is no switching, right? Or is it the other way around?

What about line-interactive?

Sorry: I know these are FAQs. They must be, because even I frequently ask them!

Yes in online UPS the power is directed through the batteries, so there is no switching time as such, best for sensitive equipment ...... Uncle Google must have helped, to clear youe FAQsss .....

 

[sam9s]

Thad ......

Google "online versus offline UPS" .... you would get the answer in detail.

Agreed, online UPS is superior, but that damn thing is not 'technically' easy, since the mains feed the electricity to the batteries direct .... Now, suppose, one battery in the battery bank misbehaves, then ...?

I think they are connected in parallel so even if one miss behaves it should not make a difference except to the backup time ....

 

[adder]

^^ 20K including 6 Solid state Batteries and their trolley

i believe you meant VRLA or sealed batteries which is different from solid state batteries.
ANyway thats quite cheap,i paid 21k for a 1000va APC line interactive sinewave ups along with a pair of 40AH Exide EL range of tubular batteries costs 5.5k each after bargaining but comes with 4 year warranty.

You should stick with Tubular batteries rather then the VRLA or sealed batteries ,since these batteries cannot recover from 100 or even 80% discharge state without loosing its AH capacity,which can even reduce to half .They also can't be quickly charged nor can it be used for cyclic charge/discharge cycles.

 

[sam9s]

mmm yea ma be, the one I am talking about is just like car battery but small. Also I did not want to go for that large tubular ones as backup time was not what I wanted (as I already have a 1.5KVA sine wave inverter and a 2KVA Genset as well) My main concern was the voltage fluctuations and the problem during change over from mains to genset, which is perfectly taken care of now ....

 

[prash2k01]

hi Sam `need help.........I have 1 CVT 500va lying idle ............can I use that with my PM8003 ?? thanks

 

[anm]

sam - does it run on inverter in case of power failure? I haven an inverter and set of batteries lying around unused as the power backup kicks up pretty soon. but once there was an issue with the fuse of power backup for about 30 mins in the night and we got too restless. So I think I will get the inverter back in duty.