Some also have relatively big air core inductor and a common mode choke in font of this "clipper"Doesn't have to be. Just a FWB and a cap.
Of cause some usual X / Y caps and snuber for filtering.
But nothing special.
Some also have relatively big air core inductor and a common mode choke in font of this "clipper"Doesn't have to be. Just a FWB and a cap.
I’m not able to measure the performance, but I trust their measurements, and I’m glad my equipment was protected.Ahh, I love the smell of anecdata in the morning
All those measurements simply state that "their" technology is better. Whether you can trust that from the manufacturer of the kit is up to you.I’m not able to measure the performance, but I trust their measurements, and I’m glad my equipment was protected.
Product Oscillograms - Zero Surge
Introduction: For optimum protection from surges and noise, the goal is to keep the surge energy from exceeding the normal power wave region. As the surge energy travels, the sudden rise of voltage (dV/dt) and current (dI/dt) is what causes the degradation of sensitive electronics. We will...zerosurge.com
All those measurements simply state that "their" technology is better. Whether you can trust that from the manufacturer of the kit is up to you.
But the discussion is whether any of these devices can protect from a nearby strike (for certain values of nearby). They can't. The energy in a lightning strike is well beyond what any surge supressor can absorb or block. It's obvious if you think about it. You'd expect air to be a really good blocker of surge energy - yet lighning can quite happly travel through upwards of 500m of the stuff. If that hits your house, it will simply bypass any protection devices you might have in line. Everything is toast.
In order for surge suppression to stand a chance, you probably need at least 1 step down transformer (to sacrificially detonate) between it and where ever the lighting hits the HV lines.
I thought the purpose of a ground rod was to divert strikes or over currents to ground, before they hit the domiciles main service panel. If it hits the house or the house is prone to strikes you add lightning rods with stringers. I was told by my uncles in the 60s of dry strikes on grain silos from the dust bowl. They insisted there were several hundred strikes during a severe dust storm lasting for days. Silos were blowing up where there was enough water to grow grains. Pyroclastic visuals they said?But the discussion is whether any of these devices can protect from a nearby strike (for certain values of nearby). They can't. The energy in a lightning strike is well beyond what any surge supressor can absorb or block.
Yep! A couple of MOVs, outlets, a box & a cord are pretty cheap. Also, including a fuse or circuit breaker is a good idea, even if equipment used with the box is individually fused.
Yes, manufacturer published performance measures are not as credible as third party published measures. All other things being equal, it would be nice to have third party objective performance measures.
Sure, nothing can protect against a direct strike. My losses were very likely downstream from the actual strike, since the power company also had to repair equipment to restore seservice
Yes, 3rd party measurements means that's the testing company actually certify that the product meets the required specs specified in the standard.
Apart from credibility, there are also legal implications. Alot is at stake here.
So buy a 2 outlet protector and plug a power bar into it.I may buy zero surge 8 which us $325 but id rather have 10 outlets and not a stupid rack
Surgex 10 outlet brick costing $620 is some bullshit
Is literally the same technology with only 2 more outlets
Why Zerosurge don’t make 10 outlets standalone?
Tired of the racks thats all i see on ebay not everyone needs or has the space for a rack
Their marketing guys are very creative."As the surge energy travels, the sudden rise of voltage (dV/dt) and current (dI/dt) is what causes the degradation of sensitive electronics."
This sounds like BS. It means that a real fast voltage rise to 300volts is worse for electronics than a slow rise to 1000volts.
The designs are pretty standard and simple. That is, MOVs go across voltage sources, and fuses go in series with the current source on the live, not neutral wire, as an example. I have built a surge box for my home audio setup. At my workplace, which manufactures surge protection devices, among other things, I have done extensive lightning surge testing using industry standard surge regimens on various combinations of surge devices. Of course, the real difficulty is not designing and building a competent surge protector, but getting it certified by authorities like UL or CE, to name two. You jump through endless hoops to get that. It's also very expensive to get these approvals.It's definitely much easier to DIY. However, here comes the problem. How can one be sure that his/her design will work as intended in a real power surge??
This is where certification becomes important. It is expensive to get a product certified and even more expensive to design a product that conform to the what's required in the certification.
Certifications may not that important for home use but when it comes to industrial use, esp. harzadous industries (eg. Chemical), it's extremely important. Using the wrong product or an uncertified oneay even result in a catastrophic failure and explosion.
The designs are pretty standard and simple. That is, MOVs go across voltage sources, and fuses go in series with the current source on the live, not neutral wire, as an example. I have built a surge box for my home audio setup. At my workplace, which manufactures surge protection devices, among other things, I have done extensive lightning surge testing using industry standard surge regimens on various combinations of surge devices. Of course, the real difficulty is not designing and building a competent surge protector, but getting it certified by authorities like UL or CE, to name two. You jump through endless hoops to get that. It's also very expensive to get these approvals.
I agree with you on that. Not everyone has experience in that field. I know not a whit about IT. Electrical circuit design is my game.It's simple to you because you are in this industry. How about a doctor or a dentist? Do you think they will be able to build one? What's simple to you might not be simple them vice versa.
For myself, I am in IT. While I do know about surge protection, I have no idea how the insides of a surge protector work (other than MOV). Protection for building is done by the facilities dept so I have no idea about it.
I agree with you on that. Not everyone has experience in that field. I know not a whit about IT. Electrical circuit design is my game.
Some also have relatively big air core inductor and a common mode choke in font of this "clipper"
Of cause some usual X / Y caps and snuber for filtering.
But nothing special.
Many will sell you a magic stone that protect your system with money back guarantee and 99,9% satisfied customers.I dunno you need that kind of price to protect your system.
The only hard (and this means expensive) part is certification.they did all the hard work, design, manufacture and certification.