an unusual charging problem
Hi all, I'm generator charging from need for the first time in my life. It is not hot enough to run the roof air. Here is a bit about the system. Magnum 3000 Hybrid 12 volt to 120 volt with A...
Forum Discussion
First of all let's trash some garbage information...
1. Comision federal de Electricidad operates on a national standard of 127vac 60Hz and 254 Vac dos hilos and tres hilos (single and three phase). The only time they drop line voltage sans L0 neutral is when the customer provides their own transformer which regs demand to be a "Y" connection meaning 4 taps, one being L0.
2. An autoformer absolutely can raise or lower AC voltage values. But there is no true isolated secondary. The biggest fault of the autoformer versus a true 2 windings transformer is line ISOLATION. True isolation not only demands a 2 winding (not common leg connected) transformer, but an earth ground barrier to eliminate cross channel contamination. The isolation is expressed in db.
3. A weak point in stepped MEXICAN autoformer voltage control, is it takes time for the device to switch from one step to the next. Sudden line surges can raise (or lower) voltage by the percentage of boost (or sag) built into the transformer switching system. The switching has to have hysterisis to prevent stitching chattering.
4. Not only do I actually operate 3 buck boost autotransformers like Pianotuna's I own four Sola ferroresonant line regulators, the largest being 3.1 Kw, which has a secondary full 38 db isolation transformer. This is all being done on CFE power.
5. I have never experienced a prolong overvoltage condition with a Tor Rey autotransformer as fast acting fuses are mounted in the faceplate of the autotransformer and they will fail if the unit is over-amped.
6. I found it helpful to study line voltge output of the Tor-Rey and also the Sola units using a oscilloscope. The first 8 or so ms of step transition incurs a slightly warped waveform with no prominent spikes or sags.
7. Whenever a product promises "Automatic" anything, it means that other performance values can be affected as well. This "shotgun" approach of automation is one of the largest reasons I utterly shun products that attempt to think for me. Such products commonly incorporate the word "smart".
8. Oh goodie, after waiting two and a half weeks, today is the day I drive 155 miles for a root-canal. Tiny as it is, the compensation is to save the tooth and the bill is eqvt to $137.00 A bad point is epinephrine-free Novocaine is not available down here and my heart may not like this at all. And people wonder why some of my responses are so grumpy. Well so be it. If epinephrine raises my pulse to 400 I'll be the first to know.
1. Comision federal de Electricidad operates on a national standard of 127vac 60Hz and 254 Vac dos hilos and tres hilos (single and three phase). The only time they drop line voltage sans L0 neutral is when the customer provides their own transformer which regs demand to be a "Y" connection meaning 4 taps, one being L0.
2. An autoformer absolutely can raise or lower AC voltage values. But there is no true isolated secondary. The biggest fault of the autoformer versus a true 2 windings transformer is line ISOLATION. True isolation not only demands a 2 winding (not common leg connected) transformer, but an earth ground barrier to eliminate cross channel contamination. The isolation is expressed in db.
3. A weak point in stepped MEXICAN autoformer voltage control, is it takes time for the device to switch from one step to the next. Sudden line surges can raise (or lower) voltage by the percentage of boost (or sag) built into the transformer switching system. The switching has to have hysterisis to prevent stitching chattering.
4. Not only do I actually operate 3 buck boost autotransformers like Pianotuna's I own four Sola ferroresonant line regulators, the largest being 3.1 Kw, which has a secondary full 38 db isolation transformer. This is all being done on CFE power.
5. I have never experienced a prolong overvoltage condition with a Tor Rey autotransformer as fast acting fuses are mounted in the faceplate of the autotransformer and they will fail if the unit is over-amped.
6. I found it helpful to study line voltge output of the Tor-Rey and also the Sola units using a oscilloscope. The first 8 or so ms of step transition incurs a slightly warped waveform with no prominent spikes or sags.
7. Whenever a product promises "Automatic" anything, it means that other performance values can be affected as well. This "shotgun" approach of automation is one of the largest reasons I utterly shun products that attempt to think for me. Such products commonly incorporate the word "smart".
8. Oh goodie, after waiting two and a half weeks, today is the day I drive 155 miles for a root-canal. Tiny as it is, the compensation is to save the tooth and the bill is eqvt to $137.00 A bad point is epinephrine-free Novocaine is not available down here and my heart may not like this at all. And people wonder why some of my responses are so grumpy. Well so be it. If epinephrine raises my pulse to 400 I'll be the first to know.
