Chazar Posted November 3, 2019 Share Posted November 3, 2019 Following the recent jihadi against my electric system by lightning nearby Im installing surge protectors and over under volt protectors. This is the over/under voltage protector, note the factory settings "default" my question is.....would you change any of these settings? Are they ok or some too high low? Ta in advance???? Link to comment Share on other sites More sharing options...
Crossy Posted November 3, 2019 Share Posted November 3, 2019 I'd leave them at the defaults unless you see anything struggling. What's your normal voltage? 170V is -23% of 220V, 187V is -15%. Possibly move the low limit to 187V but watch for nuisance tripping when big loads come on (water heater). Link to comment Share on other sites More sharing options...
Beggar Posted November 3, 2019 Share Posted November 3, 2019 Great idea if this really works. I had power strips with surge protection. Didn't work at all and I had a lot of damage. Does this really do the job? It is not even expensive what I could see. Link to comment Share on other sites More sharing options...
Chazar Posted November 3, 2019 Author Share Posted November 3, 2019 1 hour ago, Crossy said: I'd leave them at the defaults unless you see anything struggling. What's your normal voltage? 170V is -23% of 220V, 187V is -15%. Possibly move the low limit to 187V but watch for nuisance tripping when big loads come on (water heater). Ive got one of them plugged in at the moment its 230 goes up and down slightly sometimes 231 229 Link to comment Share on other sites More sharing options...
Chazar Posted November 3, 2019 Author Share Posted November 3, 2019 42 minutes ago, Beggar said: Great idea if this really works. I had power strips with surge protection. Didn't work at all and I had a lot of damage. Does this really do the job? It is not even expensive what I could see. I accidentally ordered a 40A by mistake, I also have a 63a the 40a is for sale if anyone wants it but they are so cheap..........300 baht odd. One is an lcd display the other led, the lcd although from the same maker has <deleted> instructions, the led one is better heres the current voltage as of right now, temporary plugged into a socket............yeah the black indicates my neutral hahhaaha on the two red cables Link to comment Share on other sites More sharing options...
Chazar Posted November 3, 2019 Author Share Posted November 3, 2019 44 minutes ago, Beggar said: Great idea if this really works. I had power strips with surge protection. Didn't work at all and I had a lot of damage. Does this really do the job? It is not even expensive what I could see. Ive done some of these for surge at the main board again pretty cheap now (orange plug in surge protection device spd) and replaceable, had to modify the main box a bit although i saw CEO do a board with just ONE pole protection. Link to comment Share on other sites More sharing options...
tjo o tjim Posted November 3, 2019 Share Posted November 3, 2019 What are you hoping for it to do for you? Over/under voltage protection is important for large motors, but residentially you aren’t likely to ever see an over voltage (lasting several seconds) that will damage anything. Under voltage might impact your AC units or fridge, but do you prefer to protect that (relatively cheap) equipment, or the maintain function it provides? You really need to know the tolerances of downstream equipment to make a rational decision. Surge suppression is ver different, and always a good idea. Link to comment Share on other sites More sharing options...
bankruatsteve Posted November 3, 2019 Share Posted November 3, 2019 As one of the few who has had problems with chronic high voltage, 245v seems to be the edge of where my equipment will act "strangely". Over 250v will have my TV's and receiver shut themselves down and that put my old refrigerator down twice. I now have AVR's to avoid the situation, but if me, I would lower the high value. Link to comment Share on other sites More sharing options...
Beggar Posted November 3, 2019 Share Posted November 3, 2019 In the meantime I saw YouTube videos in Russian and Hindu language (English I could not find) and it really seems to work. Will buy one with 63 Amp. The device even shows the used Ampere value in real time. Link to comment Share on other sites More sharing options...
carlyai Posted November 3, 2019 Share Posted November 3, 2019 3 minutes ago, tjo o tjim said: What are you hoping for it to do for you? Over/under voltage protection is important for large motors, but residentially you aren’t likely to ever see an over voltage (lasting several seconds) that will damage anything. Under voltage might impact your AC units or fridge, but do you prefer to protect that (relatively cheap) equipment, or the maintain function it provides? You really need to know the tolerances of downstream equipment to make a rational decision. Surge suppression is ver different, and always a good idea. You do get over voltages lasting, well long enough to make a stabalizer go crazy and start to emit a brown smell. It took out many TV etc in the village so I heard. It was after a power outage and on reconnection. Crossy recons that they probably reconnected neutral and the phase voltage back to front. So it's worth having over voltage protection. Be mindful that if the over/under thinggy is installed on a feed to your water pump, if the 6pm supply goes below the low threshold you won't have water. Link to comment Share on other sites More sharing options...
Beggar Posted November 3, 2019 Share Posted November 3, 2019 13 minutes ago, carlyai said: You do get over voltages lasting, well long enough to make a stabalizer go crazy and start to emit a brown smell. It took out many TV etc in the village so I heard. It was after a power outage and on reconnection. Crossy recons that they probably reconnected neutral and the phase voltage back to front. So it's worth having over voltage protection. Be mindful that if the over/under thinggy is installed on a feed to your water pump, if the 6pm supply goes below the low threshold you won't have water. I too had an older CRT TV that even started to burn and also the power supply of my computer was dead. The fans were spinning like crazy for several minutes. The engineers here in my condo complex did some electrical work but of course were not guilty... I had the TV and the computer plugged in in such a power strip with surge protection and in addition a further surge protection at the wall sockets. Didn't help at all. Link to comment Share on other sites More sharing options...
Chazar Posted November 3, 2019 Author Share Posted November 3, 2019 1 hour ago, tjo o tjim said: What are you hoping for it to do for you? Over/under voltage protection is important for large motors, but residentially you aren’t likely to ever see an over voltage (lasting several seconds) that will damage anything. Under voltage might impact your AC units or fridge, but do you prefer to protect that (relatively cheap) equipment, or the maintain function it provides? You really need to know the tolerances of downstream equipment to make a rational decision. Surge suppression is ver different, and always a good idea. Whats do you call a "large motor" I have a pump down by the pond and also two well pumps I think if I remember rightly 1.5hp each Link to comment Share on other sites More sharing options...
Chazar Posted November 3, 2019 Author Share Posted November 3, 2019 1 hour ago, carlyai said: you won't have water. unless you have two big bladder type tanks on two separate wells and theres atleats some pressure still left in them....which is what I have Link to comment Share on other sites More sharing options...
Crossy Posted November 3, 2019 Share Posted November 3, 2019 52 minutes ago, Beggar said: I had the TV and the computer plugged in in such a power strip with surge protection and in addition a further surge protection at the wall sockets. Didn't help at all. That's because "surge protection" isn't intended to provide over/under-voltage protection (which is what the OPs unit does), one of those would have saved your kit. Link to comment Share on other sites More sharing options...
sometimewoodworker Posted November 3, 2019 Share Posted November 3, 2019 6 hours ago, Chazar said: This is the over/under voltage protector, note the factory settings "default" my question is.....would you change any of these settings? This is how the house protection is set, the workshop has a little lower low point cutoff. Link to comment Share on other sites More sharing options...
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