Surrette - Relay Coil Incompatibility [RE-wrenches]

[Drake Chamberlin]

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A design problem has recently cropped up using Surrette batteries that 
hasn't been a problem with other brands of battery.  This is one that could 
lead to unexpected system failures, especially in systems where Surrette 
batteries are retrofitted.

I had planned to use Idec relays with 24 VDC coils to control a 
generator.  The difficulty I've come across is that the coils have a 
tolerance of 30 VDC (less according to some) while the Surrette batteries 
need to be equalized at up to 32 VDC.  Other brands of relays have the same 
issue.

While looking for a 24 volt relay with a higher coil tolerance, I did find 
one from Omron that can go up to 36 VDC.  That is great.  The problem is 
that it is made to be used as a component to solder into a circuit board, 
so it does not have a base or socket that is available for it.

The relay is a small unit, so it would be awkward soldering the wires on to 
the small pins.  If worst comes to worst, I might do that, and pot the pins 
in silicone and wrap with tape.  That is a pretty Mickey Mouse approach 
that I'd rather avoid.  Or, maybe it can be mounted to a small chunk of 
circuit board, which can be mounted to the enclosure, using 
standoffs.  Again, It sounds like a pain and could be a potential problem 
with inspectors.

Does anyone know of a source of relays with 24 volt coils, with a tolerance 
of at least 32 VDC that is designed to plug into a base or socket?

Thanks in advance.

Drake 

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