as we know the RB4xx series is come without any the ESD and Lightning protection.
we have been use the dbii safe surge series for a long time.
but i found that they are using the MOV TVR14560 (max voltage allowed is 45VDC) instead of the TVR14330 (max voltage allowed is 26VDC), what do you think if we replace the TVR14560 to this as they have no production for this yet.
correct if i am wrong, even the Routerboard DC input will be cut off when over the 28VDC, but it will help no much right.
I dont know if you have serious problems with lightening overvoltage or not. We found that most lightning protection devices will work as an protection against health damage on persons, but will not help to save the devices at all, but we still use them on reasonable places .
Mikrotik has starter to throw back devices like cards or boards with status that they have been damaged by overvoltage. Why ?
We use antenas that are DC short, so as MIkrotik self tells they dont need to be secured by lightning protection. And about ethernet overvoltage? Haha, if we use very stable high current DC source secured by high current bateries, it immposible to becomme overvoltage. Only way is to be directly hit by an lightning, and i will be sure you will recognize that your device was directly hit. We changed some boards at last time that seems to have problem on DC input, and send it to the dealer. They were thrown back as overvoltage damage! WTF!!! We didnt have an storm, coz we didnt have an rain for longer than 1 month long!
So how they “recognize” overvoltage damage ? I think it is very simple. Some DC overvoltage damaged boards, that have been send back as repaired, was just without one capacitor from the 4set. So i think that if Mikrotik finds an damaged (punctured) capacitor they just say “overvolatge”.
Ill better use capacitor with higher voltage resistability instead of annoy customers, but everybody has its own way. I am just remembering ABIT and motherboards problem. They used some wrong supplyer of capacitors and complete one year of motherboard production (cca in years 200x) was afficted and every board needed to be replaced after aproxymatly one year of use, because capacitor was puffed out.
So just think about it and make your own decisions.
Karel
PS: We are using APC or the same protectors like you
Mikrotik has starter to throw back devices like cards or boards with status that they have been damaged by overvoltage. Why ?
Karlos, if you have specific complaint about some devices that were returned to you, email RMA and give specific information. Such complaint on the forum will not help anyone. RMA dept professionals do thorough testing on devices, almost all conclusions are correct.
