Recent content by Miguel Villarroel

Little changes in length are fatal, you know. In this way, i referred to coefficient of expansion 10 years down the road, why i must use same coefficient to study conductor´s behavior but modulus of elasticity changes. I refer the most to overhead distribution where is common using AAC or AAAC...

Good point my friend, but internationally is accepted that after final, modulus of elasticity keep changing over time, my question is: why? it doesn´t happen with coefficient of linear expansion If there was no electricity there would be no internet. Good point, don´t you? :D

Why? in aluminium conductors elastic modulus changes but coefficient of linear expansion doesn´t change, (of course, changes over time) If there was no electricity there would be no internet. Good point, don´t you? :D

It refers about delta primary distribution system in comparing with wye system, i.e. if you need to transport a bulk to some distance cross country, ungrounded delta is a plus, but if you need to share out in a dense area grounded wye is a plus; of course if you use a wye grounded to transport a...

I think you should ask about minimun not maximun, why do you want to know maximun values? If there was no electricity there would be no internet. Good point, don´t you? :D

Why do you need to cut IEDs power? If there was no electricity there would be no internet. Good point, don´t you? :D

I think you need this: overvoltage, undervoltage, overcurrent and residual, frecuency low and high, Why? the answer is power quality, Is this the most important for your facility or not? if yes, you must put it all, if not, don´t worry be happy... If there was no electricity there would be no...

must have been the ozone that activated If there was no electricity there would be no internet. Good point, don´t you? :D

What kind of loads are fed by the grid? Do you know regulations about stations over there? If there was no electricity there would be no internet. Good point, don´t you? :D

I think DNO rules about a voltage drop border at ACB you can´t exceed, one should be the one who set the voltage profile to be used, but rules are rules If there was no electricity there would be no internet. Good point, don´t you? :D

you want calculate X/R value per leg, don't you? If there was no electricity there would be no internet. Good point, don´t you? :D

in any event that affects the type of installation is the maximum demand that can be applied to the feeder If there was no electricity there would be no internet. Good point, don´t you? :D

As customary in such cases is to use the effective impedance value for calculating the voltage drop If there was no electricity there would be no internet. Good point, don´t you? :D

What kind of connectors usually use? If there was no electricity there would be no internet. Good point, don´t you? :D

I think you are right with wye neutral grounded, e.g. you can serve each tenant with one leg supplying two lines and neutral, they´ll can connect 120vac or 240vac one phase loads only, and keeps three legs to move HVAC system and other 3p loads If there was no electricity there would be no...