Re: (ET) Capacitors

[Michael J DeLiso <mjdeliso juno com>]

John,

Those battery charger capacitors must be rated for 660 VAC or they will
short out.
Those 2 little wires that connect to the capacitor normally run about 630
VAC.
It does not take very long to short out or open the transformer winding.
It is a small gage winding, it will not take a lot of abuse.
The old GE capacitor rating was 551 to 720 VAC, 660 nominal.
There was 3 different chargers, the E-8 charger used a 2 mfd cap,
the E-10 charger used a 4 mfd cap. And large frame charger.
The E-12, E12M, E12s, E15, E20, chargers all use the 4 mfd capacitor. 
Same part number as the E-10.
Part numbers were GE Electrak 243A4653P1 for the E-10 and up.
                                GE  # 45F606 from Hudson Falls capacitor
works, circa 1972.
                                GE  # 26F6621FA  from Hudson Falls, circa
1993.

Hope this helps.   Mike DeLiso
                                
On Thu, 18 Nov 2004 10:29:55 -0800 (PST) John G
<zoo_keeper_johng yahoo com> writes:
> I have a few insites on capacitors and pulling.
> 
> I recently replaced my DOA capacitor with one from Grainger, it
> worked very well for a day or so, then it too died.  My charging
> voltages were under 41Vdc before, over 43Vdc with the new Cap,
> then back to under 41Vdc within the next two days after
> installation.  Water has been checked etc., and connections
> cleaned.  These are digital DVM readings.
> 
> I mounted the Cap with cable ties to the top of the vented
> covering for the charger and diodes, and securely taped the
> connections.  I an very reluctant to do any voltage measurements
> thru the small opening in the top where the timer fits, any
> error in movement and you have a VERY dangerous situation with
> high voltages and amperages.