Lightning protection means an overvoltage coupled into the line(e.g. through a lightning stroke). Another form is ESD created by static voltages. Surge is an overload condition and like a shortage. Here you have to limit the current.
Enjoy your design work!
The statement from APC "This document will explain why APC recommends against the use of any surge protector, power strip or extension cord being plugged into the "output" of any APC Back-UPS and Smart-UPS products" is very clear. On the output of the APC you do not need it and it looks like the UPS control has a problem with addtional protection circuit in the cord extension cable. Maybe you could use the extension cord on the input (which would make sense).
Exactly this question isn't answered by the said "official statement", which is only telling surge protectors "do not efficiently distribute the power". You can however clearly say, that surge protection isn't needed in this place. So why using it?So in essence, any surge protected extension cord (with MOV) is really not dangerous to be plugged in the outlets of the UPS?
Exactly this question isn't answered by the said "official statement", which is only telling surge protectors "do not efficiently distribute the power". You can however clearly say, that surge protection isn't needed in this place. So why using it?
APC tells the same, the UPS is working as a surge protection itself, because it doesn't allow voltage surges to.
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