If I wanted massive J number potential I would install GSD. But this isn't about that. Lightning surge strike.
0? joules=watts?seconds=amps2?ohms?seconds
This is about longevity of the protection device itself. I got chewed on multiple times for being too technical on this site. I simplify and omit formula and calculations and I get criticized.
I find ROTE mongers like yourself to never question rationale of circuit design but jump up and down when discipline is translated into fundamental non technical basics.
My systems work. What you say you represent you do not. Virtually EVERY non functioning battery charger I dissect, virtually every microwave control board has one hundred percent dead MOVS. Three inverter model Panasonic control boards fail an average of three months use. The fourth is retrofitted before installation. Let's see, that was in 2006.
Proof is not in meeting theory. Proof is in reaching a goal. My goal is to provide a device with suppressor lifespan adequate capacity. Or do you argue increased MOV capacity has no effect on MOV array lifespan under inordinately high values of 1-3 ms duration >500 v events?
Thought so.
Placement of the device(s) is as important as aggregate totalization of components. My first choice is at point of origin of power to the system to be protected. An idea can be gained of my theory by substitution of an isolation transformer which is a definite albeit expensive alternative. But it proved the point beyond argument. High db isolation, elimination of errant waveform THD and finally voltage correction is adequately achieved by a 3Kw Sola ferroresonant device, coupled to individual isolation transformers. That is what I have in my stick and brick umbilical home. But I am not at home. When someone brings a near new OEM protected appliance and the control circuit is dead because of no longer operative MOVs do I recommend a protection device incorporating sixty cents worth of components? It has to work, right because it is "factory" engineered. All carefully calculated. Not.
