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Clamping voltage - 330V vs 500V HELP!

post #1 of 14
6/15/10 at 2:07pm
Thread Starter 
i spent a few weeks mulling over the specs of surge protectors trying to find the best possible for my new high end pc after my previous failed as a result (i believe) of a surge. I narrowed it down to the belkin BE112234-10, which had 330V, 4000 joule and <1nanosec response. My new PC ended up arriving sooner than expected (mail purchase) , so i went to microcenter and purchased the BE112234-08, not noticing the difference. apparently the -08 model has a 500V clamping voltage while the -10 model says 330V (at least on their website, i haven't seen the box yet). belkin's page doesn't show a BE112234-08 for some reason.

this seems to be a big difference for pratically a negligible price. Why wouldn't i want the 330V version instead?,

I also noticed on the bottom of this other unit it states L-N 400V, L-G 400V, N-G 500V. what is LN LG NG? i assume these all relate to clamping voltage as well? all help appreciated, thank you.
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post #2 of 14
6/15/10 at 3:25pm
Lower is better, the voltage numbers refer to the maximum voltage on the circuit before being clamped to ground.

L = Line (hot)
N = Neutral
G = Ground

Voltage specification between two conductors, such as neutral to ground.
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post #3 of 14
6/15/10 at 4:18pm
Thread Starter 
does that necessarily make this model bad? or only in comparison? is it worth buying the other and exchanging? just not getting why two nearly identical models would be created differently. or is it all not worth worrying about. main thing im looking to protect is the 750watt corsair powersupply -> PC.

i don't suppose it is likely anyone here has the be112234-10 and would be able to check it's clamping?
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post #4 of 14
6/16/10 at 5:42pm
Quote:


Quote:
Originally Posted by 00firebird View Post

does that necessarily make this model bad? or only in comparison? is it worth buying the other and exchanging? just not getting why two nearly identical models would be created differently. or is it all not worth worrying about. main thing im looking to protect is the 750watt corsair powersupply -> PC.

The higher clamping voltage does not make the unit bad, but it will allow a higher let through voltage to your equipment in the event of an overvoltage condition (lightning, transient, etc.) A lower clamping voltage is generally preferred.


Quote:


i don't suppose it is likely anyone here has the be112234-10 and would be able to check it's clamping?

Look for specifications provided by the manufacturer which indicate how the unit handles the three types of test waveforms. Innovative Technology provides such information on their website for each model. At least then you have a model which has passed some sort of third party testing.
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post #5 of 14
6/19/10 at 11:06pm
Thread Starter 
the information on the belkin website shows it has 330V clamping on the -10 model. so i still have no idea why the -08 would be 400V, the last two digits of the protector just indicate the length of the extension cord.
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post #6 of 14
6/20/10 at 10:20am
I would just avoid Belkin generally.... cheap plastic crap.
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post #7 of 14
6/20/10 at 11:47pm
Thread Starter 
elaborate? what would you recommend instead for <$30 ?
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post #8 of 14
6/21/10 at 4:59am
Quote:
Originally Posted by 00firebird View Post

elaborate? what would you recommend instead for <$30 ?

The cheap belkin....what do you expect for 30?
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post #9 of 14
6/26/10 at 2:57pm
Thread Starter 
so what is it that you consider quality? $100, $200, $500? theres a range of products for everything but i don't really see that as necessary. enlighten me.
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post #10 of 14
6/26/10 at 4:12pm
You were initially on the right track checking capability. Not throwing out a limiting dollar amount.
Try this http://cgi.ebay.com/NILES-AC-8DSS-I-...item5191557b3a
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post #11 of 14
6/26/10 at 10:31pm
Thread Starter 
so what is it that you know about that product specifically because i can't find a single website reviewing it. no rj45 for ethernet. have you used/dismantled/etc. one before? or just recommending it for the 330v clamp?
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post #12 of 14
6/27/10 at 4:22am
I can tell you this is a quality product. You won't find much in the way of reviews because it is not a consumer product. It is built for installers.

I just checked the web site and it appears because the line has been discontinued the spec sheet is no longer there. This is why you can get these so cheap right now, about 1/3 msrp.

The big deal on these particular units are, first, they are not sacrificial,meaning they can take a shot and then reset. They also filter the incoming line to remove noise, plus have 12v switching capabilities, and are built like a tank.
They meet and actually exceed UL1449, clamp @ <300v. I have several in use throughout my home. If you are looking at belkin these are in another league and am sure you won't be disappointed.

Ethernet filtering??? Not sure I know of any product to "filter" ethernet. Why would you want to in the first place? It's all behind other electronics anyhow.
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post #13 of 14
6/27/10 at 10:54pm
Thread Starter 
sounds just like what im looking for then, not sure why a pro product would drop so drastically in price though. found old msrp's as high as $200+. so you think the 2000joule difference means nothing because it is just that much better.
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post #14 of 14
6/28/10 at 3:25am
Given choice A or B, you have seen mine. I believe the joule rating is less important than some others such as non-sacrificial, filtering, clamping speed/voltage and overall build quality which includes the method of implementation toward suppression and filtering.

From what I know on this matter and I would welcome any corrections, the limiting factor in absorption of an over voltage lies in the house wiring itself including the distance and wire gauge of the grounding conductors in reference to the panel. Nothing in residential wiring will intercept, including whole house protectors, a direct lightning strike or near miss. The units I own, have on a couple of occasions gone into protection mode and reset. Apparently doing their job.
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AVS › AVS Forum › Audio › Audio theory, Setup and Chat › Clamping voltage - 330V vs 500V HELP!