Thanks for your continuing input Digerati :smile9: which is not being wasted as has been assigned to my "personal memory banks".
Based on what you say I will move my Minimum UPS intervention to 185 or higher if that does not intervene excessively. That admittedly may strain the UPS more but would protect the PSU & PC more as well.
My Voltage at 1:30PM lunchtime today (Sunday) was Voltage 220V positive and Ground. On a week day I'd expect the Voltage to be up near 230V, which is the official Thai supply Voltage (although its interesting that the old 220V is still thought of as the norm by many). Negative to Ground 6V measured. Not ideal, but relatively usual here as the electricity company seldom grounds to the electrical Pole's grounding rod (if there is one) and a ground to the house from it supplies. Many households have no grounding grounding, others (like me) use a 2-3 metre copper rod driven into the soil but its effectiveness varies with how dry the soil is and to what depth. We are deep into the hot season day temps 34C to 43 C and night temps are around 24C. we have only seen a little rain for an hour or so about a week ago in many weeks.
I thought PSUs operating on 220-250V were capable to dealing with quite a siazable drop in Voltage, especially if they have a PFC (mine I believe has a passive PFC which I appreciate is not as good as an active PFC) and that those dealing with 110V mains supply were less capable of dealing with large drops in voltage. By what you say I am mistaken. On the PSU box it says (for whatever its worth) under heading "Industrial Standard protection for your critical components" it lists Over-Voltage, Under Voltage, Over-current, Overloading and short Circuit Protection.
Regards,
Based on what you say I will move my Minimum UPS intervention to 185 or higher if that does not intervene excessively. That admittedly may strain the UPS more but would protect the PSU & PC more as well.
My Voltage at 1:30PM lunchtime today (Sunday) was Voltage 220V positive and Ground. On a week day I'd expect the Voltage to be up near 230V, which is the official Thai supply Voltage (although its interesting that the old 220V is still thought of as the norm by many). Negative to Ground 6V measured. Not ideal, but relatively usual here as the electricity company seldom grounds to the electrical Pole's grounding rod (if there is one) and a ground to the house from it supplies. Many households have no grounding grounding, others (like me) use a 2-3 metre copper rod driven into the soil but its effectiveness varies with how dry the soil is and to what depth. We are deep into the hot season day temps 34C to 43 C and night temps are around 24C. we have only seen a little rain for an hour or so about a week ago in many weeks.
I thought PSUs operating on 220-250V were capable to dealing with quite a siazable drop in Voltage, especially if they have a PFC (mine I believe has a passive PFC which I appreciate is not as good as an active PFC) and that those dealing with 110V mains supply were less capable of dealing with large drops in voltage. By what you say I am mistaken. On the PSU box it says (for whatever its worth) under heading "Industrial Standard protection for your critical components" it lists Over-Voltage, Under Voltage, Over-current, Overloading and short Circuit Protection.
Regards,