Re: [ilugd] [off-topic] UPS catches fire
Linux Lingam wrote: dear triveni, [snip] i also looked at the website of luminous www.myluminous.com and found their background, profile, products and clients quite confidence-building. also checked out su-kam.com and checking their background. both seem to be at par. check out the client-list of both. quite impressive, though it appears luminous has more clients from the IT industry, especially the big heavyweights. su-kam also makes solar-power based inverters that output pure sinewave. neat! a) anybody has su-kam installed? what's your feedback please? b) anybody used their solar-power based inverters? You might want to check out http://www.elnova.com Elnova Pvt Ltd, based in Okhla, are in this field for over 30 years. If you do contact them, ask to speak to Mr. V. K. Mehra. He is one of the Directors of this company and a personal friend. You could give my reference (Sanjay Dutt). HTH Sanjay Dutt -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.485 / Virus Database: 269.13.8/993 - Release Date: 9/6/2007 3:18 PM ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
dear triveni, Have been using APC HI800SQ since April 2007. Due to severe voltage fluctuations(which is regular feature in Gurgaon,if we have electricity) the UPS went dead twice in last 5 months and was replaced within a day without any charges. hmmm... APC as a choice doesn't sound too encouraging to me. It can be said APC service is very good in warranty period. sure. APC Sine wave is around 20K (double of other inverters in the market). maybe a good idea to buy two units of the other inverter, and use one for redundancies. Su-Kam Sine waver is supposed to be very good too,and not costly. i also looked at the website of luminous www.myluminous.com and found their background, profile, products and clients quite confidence-building. also checked out su-kam.com and checking their background. both seem to be at par. check out the client-list of both. quite impressive, though it appears luminous has more clients from the IT industry, especially the big heavyweights. su-kam also makes solar-power based inverters that output pure sinewave. neat! a) anybody has su-kam installed? what's your feedback please? b) anybody used their solar-power based inverters? any specific things to watch out for in the unit? Get a sine wave inverter. And get a battery of your choice,which doesn't need much maintenance. Regards, Tirveni Yadav thanks for your suggestions, tirveni :-) niyam ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
dear sanjay, thanks for the tip, and the reference. On 9/7/07, Sanjay Dutt [EMAIL PROTECTED] wrote: You might want to check out http://www.elnova.com Elnova Pvt Ltd, based in Okhla, are in this field for over 30 years. If you do contact them, ask to speak to Mr. V. K. Mehra. He is one of the Directors of this company and a personal friend. You could give my reference (Sanjay Dutt). i did purchase a CVT from Elnova circa 1985. their quality was very good at that time. i knew them through a relative. they seemd to be pioneers and market-leaders at that time. then i lost touch with them. their site does not mention inverters or UPS for home-use. i wonder how they compare to su-kam and luminous. have you used any of their products in the setup i describe? niyam ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
i have a 15 year old ups that stopped working about 5 years ago - can anyone advise me on how to get it to work again? -- regards Kenneth Gonsalves Associate, NRC-FOSS [EMAIL PROTECTED] http://nrcfosshelpline.in/web/ On 06-Sep-07, at 5:48 AM, Ajay Kumar wrote: I've been using a Luminous inverter (1.8 KVA) and had no specific troubles until I neglected checking the batteries for evaporated water. It so happens that all this current passing through the batteries burns the water out due to ohmic heating and could eventually damage the batteries. I am sure you know all that. Nevertheless the setup was back in operation once the water was added and the batteries recharged. I usually add distilled / ro water to the bank. I also hope we are all aware of the environmental issues with the lead of the lead acid batteries. Among other things, lead causes mental retardation. Cheers, Ajay Linux Lingam wrote: dear all, a few nights ago my home was filled with thick, burning smoke. an online UPS caught fire at night, took almost an hour to battle the flames. the dangerous aspect was the truck-sized batteries connected to it for 8 to 12 hours of backup during power failures. took another hour for exhaust fans to clear the air, and even now the place has residue acrid smells of the smoke fire. never mind the details, don't wish to repeat them. nasty experience. this UPS was used to power lights and fans, like an inverter. the setup's been working fine since 1999 with the usual regular maintenance etc. i've been installing and using UPSes for since 1989 and am familiar with all aspects of it. must have installed several dozen at various sites till date, never had any problems. this may have been a freak accident. need your immediate advise and suggestions please. to power lights and fans for a rating of about 1KVA to 1.5KVA, should i go in for an online UPS or the new crop of pure-sinewave inverters? more importantly, which brand would you recommend, and/or know works in a similar setup reliably? any specific things to watch out for in the unit? thanks for your advise. :-) niyam ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/ ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/ ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
On Thu, 2007-09-06 at 12:12 +0530, Kenneth Gonsalves wrote: i have a 15 year old ups that stopped working about 5 years ago - can anyone advise me on how to get it to work again? In 'Armageddon' (or maybe 'Deep Impact' or something else) one Russian astro-scientist suggested something like, 'when a machine is not working, kick it, and it will start'. So, maybe, you will have to kick it. Because it is not working for five holy years, maybe you will have to kick it extremely hard. So, better to search for tungsten boots in reasonable prices in Indian markets. Or, as it is a LUG list, you may search for source core of tungsten, to develop and hack into a good pair of boots. ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
dear ajay, thanks so much for your response. On 9/6/07, Ajay Kumar [EMAIL PROTECTED] wrote: I've been using a Luminous inverter (1.8 KVA) and had no specific troubles until I neglected checking the batteries for evaporated water. It so happens that all this current passing through the batteries burns the water out due to ohmic heating and could eventually damage the batteries. I am sure you know all that. yup. we check batteries regularly and only use RO water. this since my first UPS decades ago. I also hope we are all aware of the environmental issues with the lead of the lead acid batteries. Among other things, lead causes mental retardation. yes. the UPS is kept away with good ventilation etc, in a large airy room with exhaust. more specific questions: how old is your luminous? is it an invertor? what kind of load have you connected to it? lights, fans, comps? is your luminous a pure sinewave, or a step-sine, or placeholder? n ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
dear sudev, thanks for your response. My office in Okhla had a fire four odd years back due to overheated UPS left on by a user. As one of the UPS manufacturer was a tenant downstairs I could get the following explanation: The issue is that all UPS heat up when inverting supply. Over a period the insulation of wire etc is likely to become weak leading toleakage (mild short circuiting) which in turn draws more current meaning more heating meaning more insulation breakdown and so on till the cycle results in flames. More true in long power outages. that's true. the irony here is that my UPS installations have worked without problems when power-breakdowns would occur daily for 6 to 8 hours non-stop, and then again go through brown-outs and all the vicious stuff that used to happen with the supply. the UPSes have handled those rough years with no breakdowns, except a blown AC or DC fuse once in a while. things have smoothened out now, with minimal breakdowns and better supply and distribution. so am even more intrigued. Since then we have switched to APC UPS on all applications that need 24 hour on time and with no external batteries. Some of these have been in service for long time without problem. It is better to use a small genset in tandem with UPS than use batteries unless you have a setup where regular upkeep can be done. I know this is costly but fire is deadly. right. thanks for the advice. so your APC have some maintenance-free batteries inside for a few minutes of backup while the generator fires up? tia niyam ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
more specific questions: how old is your luminous? is it an invertor? Not very old. +2 years. what kind of load have you connected to it? lights, fans, comps? 1100 W of fans, exhausts, comps and lighting - relatively stable load of about 600-700 W at power factors of about 0.6-0.7 (guessing) so about 1000 - 1100 KVA . Rest intermittent loads like the food processor, water pump, washing machine (without water heating and the spin cycle) etc. All within the energy budget I guess. is your luminous a pure sinewave, or a step-sine, or placeholder? They do call it a pure sinewave, but I have not connected an oscilloscope to check. Nevertheless, however big an inductor they may have used, they would still have their chopping frequency present in the output. Again, I haven't checked for I don't have at hand an osciloscope or other device combination like a step down transformer to use with the mic jack. Cheers, Ajay ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
On 9/6/07, Linux Lingam [EMAIL PROTECTED] wrote: this UPS was used to power lights and fans, like an inverter. inductive load on UPS ? IAC, that should not be done. -- eMail: dileep.kumarayil (at) gmail.com www: http://www.symonds.net/~dileep/ blog: http://www.kumarayil.blogspot.com Value your freedom, or you will lose it, teaches history. `Don't bother us with politics', respond those who don't want to learn. -- Richard Stallman ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
On 9/6/07, Dileep M. Kumar [EMAIL PROTECTED] wrote: On 9/6/07, Linux Lingam [EMAIL PROTECTED] wrote: this UPS was used to power lights and fans, like an inverter. inductive load on UPS ? IAC, that should not be done. it is not an offline UPS, but an online UPS, can handle inductive loads. n ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
On 06/09/07, Linux Lingam [EMAIL PROTECTED] wrote: Since then we have switched to APC UPS on all applications that need 24 hour on time and with no external batteries. Some of these have been in service for long time without problem. It is better to use a small genset in tandem with UPS than use batteries unless you have a setup where regular upkeep can be done. I know this is costly but fire is deadly. right. thanks for the advice. so your APC have some maintenance-free batteries inside for a few minutes of backup while the generator fires up? Cost being limiting factor in the model we have, usually the servers are running for 30~45 minutes before power down. Critical data centers can have hour and hour of backup but $$...(or should I say RsRsRsRs) -- Regards, Sudev Barar See you at 'Freed.in - freedom in technology software' - India's leading free and open source community event. 28- 29 September 2007, New Delhi. Entry free, on first come basis. Register at http://Freed.in ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
--- Linux Lingam [EMAIL PROTECTED] wrote: need your immediate advise and suggestions please. to power lights and fans for a rating of about 1KVA to 1.5KVA, should i go in for an online UPS or the new crop of pure-sinewave inverters? Have been using APC HI800SQ since April 2007. Due to severe voltage fluctuations(which is regular feature in Gurgaon,if we have electricity) the UPS went dead twice in last 5 months and was replaced within a day without any charges. It can be said APC service is very good in warranty period. more importantly, which brand would you recommend, and/or know works in a similar setup reliably? APC Sine wave is around 20K (double of other inverters in the market). Su-Kam Sine waver is supposed to be very good too,and not costly. any specific things to watch out for in the unit? Get a sine wave inverter. And get a battery of your choice,which doesn't need much maintenance. Regards, Tirveni Yadav See You at Freed.in (28th 29th September 2007) Download prohibited? No problem. CHAT from any browser, without download. Go to http://in.messenger.yahoo.com/webmessengerpromo.php/ ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
[ilugd] [off-topic] UPS catches fire
dear all, a few nights ago my home was filled with thick, burning smoke. an online UPS caught fire at night, took almost an hour to battle the flames. the dangerous aspect was the truck-sized batteries connected to it for 8 to 12 hours of backup during power failures. took another hour for exhaust fans to clear the air, and even now the place has residue acrid smells of the smoke fire. never mind the details, don't wish to repeat them. nasty experience. this UPS was used to power lights and fans, like an inverter. the setup's been working fine since 1999 with the usual regular maintenance etc. i've been installing and using UPSes for since 1989 and am familiar with all aspects of it. must have installed several dozen at various sites till date, never had any problems. this may have been a freak accident. need your immediate advise and suggestions please. to power lights and fans for a rating of about 1KVA to 1.5KVA, should i go in for an online UPS or the new crop of pure-sinewave inverters? more importantly, which brand would you recommend, and/or know works in a similar setup reliably? any specific things to watch out for in the unit? thanks for your advise. :-) niyam ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
I've been using a Luminous inverter (1.8 KVA) and had no specific troubles until I neglected checking the batteries for evaporated water. It so happens that all this current passing through the batteries burns the water out due to ohmic heating and could eventually damage the batteries. I am sure you know all that. Nevertheless the setup was back in operation once the water was added and the batteries recharged. I usually add distilled / ro water to the bank. I also hope we are all aware of the environmental issues with the lead of the lead acid batteries. Among other things, lead causes mental retardation. Cheers, Ajay Linux Lingam wrote: dear all, a few nights ago my home was filled with thick, burning smoke. an online UPS caught fire at night, took almost an hour to battle the flames. the dangerous aspect was the truck-sized batteries connected to it for 8 to 12 hours of backup during power failures. took another hour for exhaust fans to clear the air, and even now the place has residue acrid smells of the smoke fire. never mind the details, don't wish to repeat them. nasty experience. this UPS was used to power lights and fans, like an inverter. the setup's been working fine since 1999 with the usual regular maintenance etc. i've been installing and using UPSes for since 1989 and am familiar with all aspects of it. must have installed several dozen at various sites till date, never had any problems. this may have been a freak accident. need your immediate advise and suggestions please. to power lights and fans for a rating of about 1KVA to 1.5KVA, should i go in for an online UPS or the new crop of pure-sinewave inverters? more importantly, which brand would you recommend, and/or know works in a similar setup reliably? any specific things to watch out for in the unit? thanks for your advise. :-) niyam ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/ ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
Linux Lingam wrote: any specific things to watch out for in the unit? things that dont go *boom* would be good :) -- Karanbir Singh : http://www.karan.org/ : [EMAIL PROTECTED] ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
Re: [ilugd] [off-topic] UPS catches fire
On 06/09/07, Linux Lingam [EMAIL PROTECTED] wrote: a few nights ago my home was filled with thick, burning smoke. an online UPS caught fire at night, took almost an hour to battle the flames. the dangerous aspect was the truck-sized batteries connected to it for 8 to 12 hours of backup during power failures. took another hour for exhaust fans to clear the air, and even now the place has residue acrid smells of the smoke fire. My office in Okhla had a fire four odd years back due to overheated UPS left on by a user. As one of the UPS manufacturer was a tenant downstairs I could get the following explanation: The issue is that all UPS heat up when inverting supply. Over a period the insulation of wire etc is likely to become weak leading toleakage (mild short circuiting) which in turn draws more current meaning more heating meaning more insulation breakdown and so on till the cycle results in flames. More true in long power outages. Since then we have switched to APC UPS on all applications that need 24 hour on time and with no external batteries. Some of these have been in service for long time without problem. It is better to use a small genset in tandem with UPS than use batteries unless you have a setup where regular upkeep can be done. I know this is costly but fire is deadly. -- Regards, Sudev Barar See you at 'Freed.in - freedom in technology software' - India's leading free and open source community event. 28- 29 September 2007, New Delhi. Entry free, on first come basis. Register at http://Freed.in ___ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
