- Reaction score
- 10,236
Here's another link to a UK website; RM17UAS15 | OVER & UNDERVOLTAGE CONTROL 65-260VAC-DC | Schneider Electric
Discuss Well pump burning out in the UK Electrical Forum area at ElectriciansForums.net
sorry mate the link doesnt open
Here's another link to a UK website; RM17UAS15 | OVER & UNDERVOLTAGE CONTROL 65-260VAC-DC | Schneider Electric
Yep, it's not really a 'breaker' as such, it's a monitor with a built-in switch contact that could be used to operate the load direct if it's within the current limit of the contact otherwise the contact is used to operate a separate contactor which in turn switches the load current. The knobs are for setting the voltage limits and on some models the hysteresis/differential as well.
Yep, I warned you earlier that protecting against all the causes of poor power quality was going to be expensive and there's no guarantee that low voltage is the problem. Hence my initial far cheaper suggestion of the delay timer.its an expensive bit of kit aint it mate 100 quid.
Yep, I warned you earlier that protecting against all the causes of poor power quality was going to be expensive and there's no guarantee that low voltage is the problem. Hence my initial far cheaper suggestion of the delay timer.
You probably do not want to protect the timer with the same breaker as the pump as it may not have a suitable rating, perhaps something like this?
View attachment 29491
I am afraid I use power point on the forum and save as a picture, not too technical!What program do you use to do your drawings Richard? They are always good.
I am afraid I use power point on the forum and save as a picture, not too technical!
They just tend to be sketches but can help to describe things more easily.
Thank you BTW.
You probably do not want to protect the timer with the same breaker as the pump as it may not have a suitable rating, perhaps something like this?
View attachment 29491
Choose an on delay timer that works with the local supply voltage (which I do not know)e.g. this one for 230 Vac.
Select a contactor with at least two poles so that you can disconnect the neutral to the pump as well (in case you are getting neutral voltage during power outs), normally contactors are easily and cheaply available in three pole with an auxiliary contact. If it is three phase then all three poles should be switched one for each phase.
The coil of the contactor would need to be suitable for the local supply voltage.
The contactor should be rated to be able to take the current demand of the pump e.g say the pump is 5.5 kW a contactor rated at 12 A for AC-3 such as this one may be suitable.
With those parts you would then have this arrangement for single phase, however I am not certain from your descriptions whether this could be safely and correctly implemented by your overseas associates.
View attachment 29493
And yes you are correct an On Delay timer will, when supplied with power, start a timer (set on the unit) that at the end of the time period will operate the timer relay contacts. if the power goes off the timer will be reset.
Maybe it's an unwell pump......
My wit was wasted...........could be mate...but just in case ill take these things with me..they can be used for other things aswell if i dont use it for the pump
Reply to Well pump burning out in the UK Electrical Forum area at ElectriciansForums.net
We get it, advertisements are annoying!
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.