India Broadband Forum

goodyet · 07-26-09, 12:47 PM

When I use my Netgear DG834G during day time, if there is a voltage fluctuation (low voltage), the power light goes off and it reboots. During night time(after 11 p.m. and before 6 a.m.) there will be hight voltage (because of it my router adapter went bad). Local JTO said that I shouldn't use internet during night time because there will be power in the neutral line as well. Is there a good UPS which will help me to get around this problem (both power backup and voltage stabilizer)?

superprash2003 · 07-26-09, 12:53 PM

There are a lot of them.. APC is the best i believe!!

goodyet · 07-26-09, 12:57 PM

Thank you

07-26-09, 01:18 PM

APC will be a wise choice.

essbebe · 07-26-09, 02:15 PM

BUY "ONline " UPS.
Power available from unit whether Electricity
board power is available or not ( * time specified )

online ups is a double conversion(dual) ups which firstly
converts AC power to D.c ,then D.c to A.C .the stored D.c
form of electricity remains within the batteries. in

what is the difference between ONLINE UPS and OFFLINE UPS?

Quote:

online
ups systems load is always connected to inverter. in online
ups system the power supply goes to the end user through
the battery,if there is A.c power cut ,then no harm or
interruptibility occurs .

APPLICABLE IN CRITICAL INSTRUMENTS LIKE C.T SCAN,X-
RAYS,ULTRA SOUND,OPERATION
EQUIPMENTS,SPECTROSCOPES,COMPUTERS ETC......

by SAMEER HUSSAIN
(M.E)
SNA POWER ENG. PVT LTD LUDHIANA

while in case of offline ups sytems the raw A.c supply is
connected by a realy type of mechanism,then the battery and
inverter is bound tothe msin supply. so when there is A.c
Power cut ,the really needs a time gap of 3-5 ms to shift
it to battery mode.

Source :
Google search term : onlineUPS offline UPS

goodyet · 07-26-09, 08:29 PM

Hello essbebe, can you tell me what will be the price range of an online ups. I would go for the one which gives 20 minutes power backup?

essbebe · 07-26-09, 09:37 PM

compared to a normal UPS
ONline double conversion UPS costs almost five to ten times more.

If you use laptop with battery backup,
connecting the Modem directly to UPS battery,
with suitable modifications,will keep your
connection going so that you don't loose data.

Mention modem model make and power required.
9V or 12V AC or DC amperage about 1 amp.
Polarity of plug ( Inner positive /tip usually ).
or even a small 12V motor cycle battery will do !

just4kix · 07-26-09, 11:23 PM

For a home setup, a standard 1 KVA UPS from a reputed company such as APC is more than sufficient. UPS have built-in stabilizer and the sine wave is also maintained at 50 Hz.

If someone wants additional safety, buy a spike guard also.

essbebe · 07-26-09, 11:53 PM

Update :
DG834g -(minus) 12 V DC 1 AMP . Check polarity of plug.
Easy to connect to Battery. ( no additional requirements) .
Any UPS will do for the computer /desktop,
as modem will not get disconnected due to transients .

goodyet · 07-27-09, 07:08 AM

Netgear DG834g v4 requires 12 volts (DC adapter), and I use a laptop. When there is power fluctuation (low voltage) the laptop (dell vostro 1400) does not go into battery mode. Even If I use utstarcom mode, it also doesn't reboot. But when I turn on refridgerator or CRT tv, or if someone turns on electric water pump in our area DG834g reboots. I don't have UPS now, like to buy one.

just4kix · 07-27-09, 08:14 AM

Quote:

Originally Posted by goodyet

Netgear DG834g v4 requires 12 volts (DC adapter), and I use a laptop. When there is power fluctuation (low voltage) the laptop (dell vostro 1400) does not go into battery mode. Even If I use utstarcom mode, it also doesn't reboot. But when I turn on refridgerator or CRT tv, or if someone turns on electric water pump in our area DG834g reboots. I don't have UPS now, like to buy one.

You should buy a UPS from APC as suggested above.

Luke Skywalker · 07-27-09, 09:13 PM

I don't think APC is offering such a good protection against this kind of brownouts. First check whether it is providing regulator or not.Online UPS are quite expensive. I think if APC one don't have regulator then you should purchase one or you will suffer from frequent discharging.

07-26-09, 12:47 PM	#1
goodyet Junior Member Join Date: Oct 2008 Posts: 37 Rep Power: 2	Voltage fluctuation: IS there a good voltage Stabilizing UPS? When I use my Netgear DG834G during day time, if there is a voltage fluctuation (low voltage), the power light goes off and it reboots. During night time(after 11 p.m. and before 6 a.m.) there will be hight voltage (because of it my router adapter went bad). Local JTO said that I shouldn't use internet during night time because there will be power in the neutral line as well. Is there a good UPS which will help me to get around this problem (both power backup and voltage stabilizer)?

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07-26-09, 12:53 PM	#2
superprash2003 Platinum Member Join Date: Feb 2008 Posts: 2,692 Rep Power: 5	There are a lot of them.. APC is the best i believe!!

07-26-09, 12:57 PM	#3
goodyet Junior Member Join Date: Oct 2008 Posts: 37 Rep Power: 2	Thank you

07-26-09, 01:18 PM	#4
meetdilip Guest Posts: n/a	APC will be a wise choice.

07-26-09, 08:29 PM	#6
goodyet Junior Member Join Date: Oct 2008 Posts: 37 Rep Power: 2	Hello essbebe, can you tell me what will be the price range of an online ups. I would go for the one which gives 20 minutes power backup?

07-26-09, 11:23 PM	#8
just4kix Platinum Member Join Date: Dec 2007 Location: Pune Posts: 8,899 Blog Entries: 6 Rep Power: 19	For a home setup, a standard 1 KVA UPS from a reputed company such as APC is more than sufficient. UPS have built-in stabilizer and the sine wave is also maintained at 50 Hz. If someone wants additional safety, buy a spike guard also.

07-26-09, 11:53 PM	#9
essbebe Platinum Member Join Date: Aug 2007 Location: Chennai Posts: 4,246 Rep Power: 12	Update : DG834g -(minus) 12 V DC 1 AMP . Check polarity of plug. Easy to connect to Battery. ( no additional requirements) . Any UPS will do for the computer /desktop, as modem will not get disconnected due to transients .

07-27-09, 07:08 AM	#10
goodyet Junior Member Join Date: Oct 2008 Posts: 37 Rep Power: 2	Netgear DG834g v4 requires 12 volts (DC adapter), and I use a laptop. When there is power fluctuation (low voltage) the laptop (dell vostro 1400) does not go into battery mode. Even If I use utstarcom mode, it also doesn't reboot. But when I turn on refridgerator or CRT tv, or if someone turns on electric water pump in our area DG834g reboots. I don't have UPS now, like to buy one.

07-27-09, 09:13 PM	#12
Luke Skywalker Jedi knight Join Date: Jul 2009 Location: IBF Age: 21 Posts: 1,818 Rep Power: 5	I don't think APC is offering such a good protection against this kind of brownouts. First check whether it is providing regulator or not.Online UPS are quite expensive. I think if APC one don't have regulator then you should purchase one or you will suffer from frequent discharging.

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Voltage fluctuation: IS there a good voltage Stabilizing UPS?

Voltage fluctuation: IS there a good voltage Stabilizing UPS?

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