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12 Posts

10-26-2011

usa

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Surge protection and hard power shutdown damage

2011-10-26, 17:54 PM

Hello guys,

 

1) I have recenty bought a T520. I was wondering if they have any type of protection for surges (basic, not for really power outages. as you may know, the tension in a house can sometimes go up a little bit). Its a little bit stupid, but enough to be concerned.

 

2) Then, do you guys know if i can break (hardware damage) my computer if i accidentally disconnect it from the power? I usually dont work with the battery and im enough stupid to sometimes disconnect it (yep, its connected to a plug which can be closed from a button and i sometimes... forget)

 

Thank you guys for your effort. Have a great day.

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437 Posts

08-13-2010

Tucson, Arizona

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  • Message 2 of 11

Re: Surge protection and hard power shutdown damage

2011-10-26, 21:38 PM
Your A/C adapter is in effect, a voltage regulator. It can operate on any voltage from 100 to 240 VAC, and from 50 to 60 Hz. If you accidentally disconnect the A/C line, it should give you a loud beep, but it will not harm anything. It will simply start running on battery power. If the battery is not present, the system will lose power completely just like a desktop if it is disconnected. Windows 7 can handle that type of shutdown fairly well. You could lose a data file if it was in the middle of a write to the storage drive when the power was lost. That can usually be fixed by running CHKDSK /f/r.
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21115 Posts

12-20-2008

Australia, Melbourne

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  • Message 3 of 11

Re: Surge protection and hard power shutdown damage

2011-10-27, 1:57 AM
if it was a voltage spike in the line due to lightening strike, then you could fry your computer. You should get a surge protector that have some insurance against these things.

Laptop itself is okay against brownouts and blackouts, as the battery will act as a UPS.
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
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437 Posts

08-13-2010

Tucson, Arizona

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  • Message 4 of 11

Re: Surge protection and hard power shutdown damage

2011-10-27, 3:27 AM
Adirect hit by lightning can't really be protected by anything. I've had that happen. But, a lightning spike in the line from a nearby hit would probably burn out the A/C Adapter before reaching the laptop. Whenever I hear boomers, I power down and disconnect everything. Lesson learned. :)
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21115 Posts

12-20-2008

Australia, Melbourne

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  • Message 5 of 11

Re: Surge protection and hard power shutdown damage

2011-10-27, 3:30 AM
But lot of high quality surge protectors will give you a certain amount of insurance coverage for the lifetime of the device (well in Australia they do). So even when your device is damaged you can claim insurance for it.
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
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1022 Posts

01-07-2011

Sacramento, CA

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  • Message 6 of 11

Re: Surge protection and hard power shutdown damage

2011-10-27, 6:07 AM

wrote:
But lot of high quality surge protectors will give you a certain amount of insurance coverage for the lifetime of the device (well in Australia they do). So even when your device is damaged you can claim insurance for it.

Those are actually line conditioners, surge protectors offer no real protection. APC makes some exellent products that will protect your equipment from lighting.

 

http://www.apc.com/products/family/index.cfm?id=67

 

http://www.apc.com/products/family/index.cfm?id=174

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21115 Posts

12-20-2008

Australia, Melbourne

20622 Signins

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  • Posts: 21115
  • Registered: ‎12-20-2008
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  • Message 7 of 11

Re: Surge protection and hard power shutdown damage

2011-10-27, 9:48 AM
what i meant was that the maker of some surge protectors (in Australia) offer you $5,000 to $200,000 dollars in damage insurance.
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
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12 Posts

10-26-2011

usa

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  • Message 8 of 11

Re: Surge protection and hard power shutdown damage

2011-10-27, 19:49 PM

Thank you for all the answers guys.

 

They really help me. So summarizing, the best way to avoid surges is a surge protector, which wont work with a lightning. I usually work without battery, so I may have to use the surge protector, instead of the battery.

 

So if my computer has a hard shutdown (power supply), my hardware wont have any problem, right? (As you said, the power supply is a voltage regulator, which will avoid any small surges, right)

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437 Posts

08-13-2010

Tucson, Arizona

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  • Message 9 of 11

Re: Surge protection and hard power shutdown damage

2011-10-27, 22:10 PM
That is correct as I see it. Since you run normally w/o battery (that is what I do as well), you might want to use a modest UPS instead of an ordinary surge protector. That would provide you with conditioned power and allow for a graceful shut down in the even of a total power failure, oir time enough to pop your battery in.
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12 Posts

10-26-2011

usa

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  • Message 10 of 11

Re: Surge protection and hard power shutdown damage

2011-10-28, 0:29 AM

Thank you for answering.

 

Yep, I could use a UPS, but I guess buying an external battery is not that expensive compared to an UPS. The other way is if in 2 years my battery is (almost) dead, buying another one (I guess it will be around the 70-80$).

 

As what I do is software developing and I constantly push and pop the code (control version system) I guess in case of a hard shutdown, I wouldnt lose a lot of work.

 

A decent UPS how much does it cost? I have seen UPS for more than 100$. Wouldnt it be better battery+surge protector?

 

Thank you!

 

PS: The hardware damage question is a little bit controversial, for what I have read. Some people say that a hard power shutdown damages hardware, some other say no. I guess its not easy to answer.

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