Nominal voltage of components
- Thread starter Mike2007
- Start date
I suspect that they are talking in pretty vague 'nominal' terms (which would therefore sort-of 'encompass' 240V!).
I suppose it might be theoretically true that it might 'burn out' very slightly 'more easily', but since they virtually never burn out, anyway, I don't think it's a real concern.
Kind Regards, John
But they do become "lazy" do they not? Its on a boiler
If I understand you correctly, 'becoming lazy' is due either to mechanical issues (springs, dirt, grease) or magnetisation of the core/armature/structure, and the latter of those will not happen with an AC coils. I can't really think of how the 'voltage rating' of the (AC) coil could affect that - but someone else might have other ideas!
Kind Regards, John
They will be fine, I went to look at a fault on an industrial laundry machine that kept killing a relay every 2 days, turned out the onsite engineer was replacing it with ones with 24V ac coils instead of 240V ac coils. If they can work for a good few hours under extreme abuse like that a few volts here and there isn't going to hurt. Same site using 240V contactor coils on a 440V supply, they lasted several days before failing, and even they were not heavily burnt.
The most common cause of solenoid coil failure I've seen when opening dead ones is the fine wire corroding away where it connects to the terminals, possibly caused by the solder flux? Remaking the connection always seems to get them going again. I dn't think I've seen a burnt out one.
I've not come across any 'lazy coils' before!
The most common cause of solenoid coil failure I've seen when opening dead ones is the fine wire corroding away where it connects to the terminals, possibly caused by the solder flux? Remaking the connection always seems to get them going again. I dn't think I've seen a burnt out one.
I've not come across any 'lazy coils' before!
If it does then it is illegally on sale in the UK.
Equipment sold here must work satisfactorily between 216.2V and 253V.
Being pedantic, "equipment" may have to work on that range, but I rather doubt that individual "components" have to. People buying components will be building them into something - which may well be for export, or the component not directly connected to the mains.
I don't think that's in any way pedantic.
We are, after all, talking about a relay (which I take to mean a 'component', not one turned into a consumer product). One can buy such relays with nominal coil voltages including 6V, 12V, 24V, 48V, 110V, 220V, 240V and 250V. In each case their specification should include a range of voltages over which they are intended to be used, but I see no reason why (although many probably do) any of them necessarily have to have a stated range which happens to cover all of what happen to be 'permitted UK mains supply voltages' - particularly, as you say, since they might be used to build equipment to be used in non-UK countries.
"Consumer goods" are a different matter.
Kind Regards, John
If the armature of an AC solenoid sticks and fails to enter the coil (due to being "lazy" 
) then the coil will burn out whether the voltage be 220 or 240
) then the coil will burn out whether the voltage be 220 or 240Yes, quite possibly - or, alternatively, sometimes maybe not burn out whether the voltage be 220V or 240V. Either way, unless the situation were very marginal, I don't think that the different in voltages would make much difference.If the armature of an AC solenoid sticks and fails to enter the coil (due to being "lazy"
Kind Regards, John
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
