help me in buying an inverter

i need inverter( pure sine ) for 3 fans,4 tubelight, tv and pc
It should be capable of 3-4 hours
plz help

R

specify your budget as well..

budget is 25k

Microtek e2 with Exide 160 ah tubular battery

funskar said:
Microtek e2 with Exide 160 ah tubular battery

Is it pure sine inverter ??
Plz also mention its "VA"

N

You can try Microtek 850 VA with 135 AH. It will cost you 20, 000 with installation. You can ask your local electrician. he will help you out. They will charge little bit more because they will take commssion.

Tubular batteries are very heavy. nearly 40 KG. we will not be able to lift them. So you should buy only with some assistance.

which is better Microtek 850 VA with 135 AH or Luminous 850 VA with 135 AH ???
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Also what is the difference between 850 VA with 135 AH and 1400 VA with 135 AH

N

rst said:
which is better Microtek 850 VA with 135 AH or Luminous 850 VA with 135 AH ???
---------------------------------------------------------------------------------------------------
Also what is the difference between 850 VA with 135 AH and 1400 VA with 135 AH

I purchased Microtek last month and it went out od order within 5 days. Huge sound followed by smells.

Circuit board RMA'ed by engineers and I have to wait for 10 days.

nandu26 said:
I purchased Microtek last month and it went out od order within 5 days. Huge sound followed by smells.

Circuit board RMA'ed by engineers and I have to wait for 10 days.

Then I think Luminous is better choice

N

rst - Please note all that inverters will have problems. Microtek has wide service network. You can also check SU-KAM.

what is the difference between 850 VA with 135 AH and 1400 VA with 135 AH

nandu26 said:
I purchased Microtek last month and it went out od order within 5 days. Huge sound followed by smells.

Circuit board RMA'ed by engineers and I have to wait for 10 days.

I have a Microtek inverter from my childhood days (~10yrs), and no issue till date.

@rst- Why only pure sine wave ?

dashing.sujay said:
@rst- Why only pure sine wave ?

Latest inverters are pure sine wave.
these inverter are more efficient than square wave inverter
Also square wave inverter could be harmful for some electrical equipment

The chances of crashes in computers, glitches and noise in the monitors and unreadable print outs are minimized by
pure sine wave inverter

^Harmful ? How ? I never faced or felt such.

square wave Inverters are made for home appliances like TV, FAN, Light etc…(which are not as sensitive as computers)
Square inverter could be harmful for computers, digital clocks, battery chargers, light dimmers

We use UPS for computers (which produces exact sine wave via microprocessors)
So sine wave inverters are better for computers than square wave Inverters
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what is the difference between 850 VA inverter with one 135 AH battery and 1400 VA inverter with one 135 AH battery

N

dashing.sujay said:
I have a Microtek inverter from my childhood days (~10yrs), and no issue till date.

@rst- Why only pure sine wave ?

Can I connect CRT TV with stabilizer to Inverter and use them during power cuts?

I hope you will have an idea since you are using inverter for last 10 years.

rst said:
what is the difference between 850 VA with 135 AH and 1400 VA with 135 AH

For 1400 VA you require two tubular batteries which will be costly. 850 requires one battery and is suitable for home. For office, I think 1400 is required to power all equipments.

nandu26 said:
For 1400 VA you require two tubular batteries which will be costly. 850 requires one battery and is suitable for home. For office, I think 1400 is required to power all equipments.

can we use 1400 VA inverter with one 150 AH battery

nandu26 said:
Can I connect CRT TV with stabilizer to Inverter and use them during power cuts?

From possibility point of view, of course you can; but why do you need? Stabilizers are needed to step up the voltage, which apparently is never a problem with inverters.

I have a 800VA Microtek inverter, with normal usage of 3 rooms' basics (fans+lights, all CFL, sometimes tubelight also), and daily TV dose of ~2hrs. Light cut duration is min 6 hrs.

N

rst said:
can we use 1400 VA inverter with one 150 AH battery

I don't think you can use one battery. Better you ask your local electrician or any electrical shop?

dashing.sujay said:
From possibility point of view, of course you can; but why do you need? Stabilizers are needed to step up the voltage, which apparently is never a problem with inverters.

I have a 800VA Microtek inverter, with normal usage of 3 rooms' basics (fans+lights, all CFL, sometimes tubelight also), and daily TV dose of ~2hrs. Light cut duration is min 6 hrs.

Do you mean that I need not have to use voltage stabilizer with CRT TV if I plugin TV to Inverter backup system.

Can we use one inverter for two floors of house ??

nandu26 said:
Do you mean that I need not have to use voltage stabilizer with CRT TV if I plugin TV to Inverter backup system.

Yes, of course not. I also used my PC with CRT.

rst said:
Can we use one inverter for two floors of house ??

Yes, but the load should be in limit.

I've APC 800VA Pure Sine Wave Inverter along with a 180Ah AMCO Tubular Battery. With 4 tubelight , 1 TV, 2 Fan, 1 PC average consuming 110W ( normal use ), it lasts upto 6-7 hrs. I'd suggest you get a same setup, but with 3 fans the backup should last 3-4 hrs.

Cost of APC 800VA SineWave Inverter - > 5.5-6k
Battery 180Ah might cost you anywhere between 14k-16k

Hope this helps.

I've APC 800VA Pure Sine Wave Inverter along with a 180Ah AMCO Tubular Battery. With 4 tubelight , 1 TV, 2 Fan, 1 PC average consuming 110W ( normal use ), it lasts upto 6-7 hrs. I'd suggest you get a same setup, but with 3 fans the backup should last 3-4 hrs.

Cost of APC 800VA SineWave Inverter - > 5.5-6k
Battery 180Ah might cost you anywhere between 14k-16k

Hope this helps.

Yeah
It is helpful

I have decided to buy 850 VA inverter with 150 or 180 Ah tubular battery

But I don't know, why APC inverters are costly among Luminous,Microtek,Amaron and Sukam

N

dashing.sujay said:
Yes, of course not. I also used my PC with CRT.

Yes, but the load should be in limit.

Sujay - I understood that I can connect CRT TV but without my existing voltage stabilizer.

rst said:
Yeah
It is helpful

I have decided to buy 850 VA inverter with 150 or 180 Ah tubular battery

But I don't know, why APC inverters are costly among Luminous,Microtek,Amaron and Sukam

Because of quality. APC UPS/Inverters are sturdy with less complaints.

nandu26 said:
Sujay - I understood that I can connect CRT TV but without my existing voltage stabilizer.

Yes mate, no need of stabilizer.

rst said:
can we use 1400 VA inverter with one 150 AH battery

I believe things are quite settled now, but, just wanted to add some points.
1. In most cases, you won't be able to use 1400 VA inverter with one battery. It simply isn't possible as the 1400 VA inverters, by design, use the batteries in series in 24V configuration, which, will it be possible with a single battery of 12 volt.

2. With an 850 VA inverter, you'll need to check the load your inverter will be put through. The more the load, the lesser the power backup time.

BTW, how much are you being quoted for a 1400 VA setup with two batteries?

Now detail of inveter in market
-----------------------------------------------
Microtek inveter (900VA) = rs 4400
Exide battery (150 Ah) =rs 10800
Total = rs 15200

Extra charges

1)transportation = Not known yet (they will book auto)
2)Installation charges
a)Labour = rs 450
b)material= rs 800 -1000

Are these rates good ??

material? What material?
I was quoted Rs. 21.5K for a 1500VA with either Luminous or Microtek UPS with 2X135 AH batteries, incl. Rs. 900 for the trolley and Rs. 500 installation/wiring for 1 floor.

They said that "As you don't have inverter connection,so it requires wires,other material etc for connection(800-1000) plus 450 labour"

CyberKID said:
material? What material?
I was quoted Rs. 21.5K for a 1500VA with either Luminous or Microtek UPS with 2X135 AH batteries, incl. Rs. 900 for the trolley and Rs. 500 installation/wiring for 1 floor.

Is Rs. 21.5K include 1500VA inverter and two 135Ah battery??
Then what is price of (a)1500VA inverter (b) 135 Ah battery

CyberKID said:
Rs. 500 installation/wiring for 1 floor.

Is it include wiring plus labour ??

Yes! I was quoted Rs. 21.5K by the dealer himself (without negotiations) for 1500VA inverter and 2x135 AH batteries.
The breakup was like this:
5.8K for the 1500VA inverter (Luminous/Microtek)
~7.1K each for the batteries (135AH).
.9K for the inverter trolley.
.5K for labour/installation costs. (The costs of wires etc. was to be borne by me).
This was about a month back. And yes, I was quoted Rs. 500 for wiring for 1 floor (point to point wiring-in the shopkeeper's terms), so, I believe, it was including labour.

CyberKID said:
Yes! I was quoted Rs. 21.5K by the dealer himself (without negotiations) for 1500VA inverter and 2x135 AH batteries.
The breakup was like this:
5.8K for the 1500VA inverter (Luminous/Microtek)
~7.1K each for the batteries (135AH).
.9K for the inverter trolley.
.5K for labour/installation costs. (The costs of wires etc. was to be borne by me).
This was about a month back. And yes, I was quoted Rs. 500 for wiring for 1 floor (point to point wiring-in the shopkeeper's terms), so, I believe, it was including labour.

Thanks

I think, its price of pure sine inverter

No doubt, electronic goods are cheaper in Delhi as compare to Dehradun

Yup, that's indeed is.

What is the backup time of your inverter ?? (I know power cuts are common in New Delhi )

Also how many fans,tubelight, etc, you use during powercut ??

rst said:
What is the backup time of your inverter ?? (I know power cuts are common in New Delhi )

Also how many fans,tubelight, etc, you use during powercut ??

Sorry mate. Sorry to disappoint you, but, I didn't buy one. I had planned a hybrid setup, and wanted to get an idea of what I needed to spend apart from the usual amount, I intended to spend on the solar panels. Inverter and the batteries were needed to convert the DC into AC and store the power generated from the solar panels. I checked out some hybrid Solar inverters also, but, they were too expensive for the hardware I was getting. None of the inverter guys had any satisfactory answers to my queries, nor, any did they have any idea about some important things, I needed, leave alone having the things. for example, Deep Cycle Batteries.
I've postponed the buying for some time now, but, possibly, will get the things by next summers.

I want to buy inverter mainly to run PC for 6 hours (during power cut)

Is Microtek inveter (900VA) with Exide battery (150 Ah) sufficient for such purpose ??
(If I will run only PC during power cut)

G

I suggest keep following in mind-

*Buy Sine wave inverter only if you are using PC on it as its sensitive load
and avoid noise in fans.

*(VA rating * 0.8 ) will approximately give you total watt of load you can connect.
Calculate yourself and choose to avoid overload.

*Ah of battery will determine your backup.The more better.Exide is good.

*Never connect Mixi,Heater,Iron box to inverter.

*Get the wiring done properly.Also depending on load choose the inverter wire as thick as possible.

Thanks a lot
Its really helpful
----------------------------------------------------
1)Microtek inveter (900VA) is sine inverter
2)I will calculate it
*img13.imageshack.us/img13/940/11004871.png

Is it helpful in calculation of power ??

gopi_vbboy said:
I suggest keep following in mind-

*Buy Sine wave inverter only if you are using PC on it as its sensitive load
and avoid noise in fans.

*(VA rating * 0.8 ) will approximately give you total watt of load you can connect.
Calculate yourself and choose to avoid overload.

*Ah of battery will determine your backup.The more better.Exide is good.

*Never connect Mixi,Heater,Iron box to inverter.

*Get the wiring done properly.Also depending on load choose the inverter wire as thick as possible.

I can use my Philips mixi on 875va luminous square wave with 150ah battery semi tubular

Thick wire is not needed. 1, 1.5, or 2 square wires are enough for houses

Use tv with a sine wave inverter only.
My Sony bravia refuses to power up with my inverter

Luminous, exide, sukam, powerZen, amaron etc are way better IMO
I have really bad experience with microtek products, they use inferior quality components

kARTechnology said:
I can use my Philips mixi on 875va luminous square wave with 150ah battery semi tubular

Thick wire is not needed. 1, 1.5, or 2 square wires are enough for houses

Use tv with a sine wave inverter only.
My Sony bravia refuses to power up with my inverter

Luminous, exide, sukam, powerZen, amaron etc are way better IMO
I have really bad experience with microtek products, they use inferior quality components

I also heard such things.
But every dealer prefers microtek products.
They said that "it is the only inverter with inbuilt bypass switch "
*img543.imageshack.us/img543/2098/microtech.jpg

N

Microtek never replies to emails. but they do attend phone calls and has wide service network. my inverter got damaged somehow and it was rectified within 5 days. they replaced circuit board with a new one.

What is the backup time of your inverter ??

Also how many fans,tubelight, etc, you use during powercut ??

N

rst said:
What is the backup time of your inverter ??

Also how many fans,tubelight, etc, you use during powercut ??

our electrician told on full load it will be 3 hours. but the time can be increased by reducing load. i only use tubelight, fans, cfl. I am not using TV.

Anand

So you have Microtek inveter (850VA) with 135 Ah battery

Am I right ??

rst said:
I also heard such things.
But every dealer prefers microtek products.
They said that "it is the only inverter with inbuilt bypass switch "
*img543.imageshack.us/img543/2098/microtech.jpg

It's a marketing gimmick...
Every inverter has it. Even luminous and others. You turn off the front power button on the inverter

In manual mode,
You remove the incoming power plug to inverter, turn inverter off, take the plug from backside and plug it into the socket from where you removed inverter plug
Set inverter aside
That's it

I want to run mainly computer with inverter
1)I think maximum power of my computer can be taken as 500W(As I have 450W psu)
2)Although my psu is 450W ,it is not included in calculation of power as 450 W (suggest me if i am wrong)

Microtek inveter (900VA) with Exide battery (150 Ah)
Calculation of total power provided by inverter
------------------------------------------------------------
900 VA inverter will give =900 X .8
= 720 W

500W computer will give =500 /.8
=625 VA

Formula for backup time
--------------------------------
Battery Voltage x Battery AH rating = Required VA x Backup Time
12 x 150 = 625 x Backup Time
1800/625 = Backup Time
2.88 hrs = Backup Time