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Re: (ET) Remind me: voltage sag on charger
- Subject: Re: (ET) Remind me: voltage sag on charger
- From: "Steve & Sandy Naugler" <snaugler earthlink net>
- Date: Mon, 1 Nov 1999 21:41:59 -0500
- References: <014301bf24bd$e45d4580$0a56a8c0 earthlink net earthlink net>
- Reply-to: "Steve & Sandy Naugler" <snaugler earthlink net>
- Sender: owner-elec-trak cosmos5 phy tufts edu
Here are some charger data points from my service manual:
1. Test points are to be conductor 2 which is the diode heat sink or the
combined diode outputs, conductor 30 which is the transformer secondary
center tap, 44 and 45 which are the inputs to the two diodes, and 42 and 43
which are the inputs to the capacitor.
2. 2 (+) to 30 (-) should measure 40 to 45 VDC w/o a load. This should be
a good charger.
a. If 0 to 2 VDC, then shorted diode, shorted capacitor, or faulty
b. If 15 to 20 VDC, then open diode, or faulty transformer.
c. If 30 to 34 VDC, then faulty capacitor, or faulty transformer.
3. 30 to 44 and 30 to 45 should measure 45 VAC.
4. 44 to 45 should measure 90 VAC.
5. Remove the capacitor.
6. 30 to 44 and 30 to 45 should measure 35 VAC w/o capacitor.
7. 44 to 45 should measure 70 VAC w/o capacitor.
I've never had a bad charger except for the timers, so I cannot
garrantee these GE supplied diagnostics are 100 % accurate, but I believe
them to be correct. Hope this helps.
----- Original Message -----
From: Max Hall <maxo iname com>
To: <elec-trak cosmos5 phy tufts edu>
Sent: Monday, November 01, 1999 6:07 PM
Subject: (ET) Remind me: voltage sag on charger
> I do believe that I remember a discussion of chargers that don't put out
> high enough voltage for charging...
> the onboard charger on my E-15 gives 36v on the button, not the 38 or 40
> so that most 36v chargers put out
> Can anyone spew a quick summary of possible causes
> OR remind me how to get to the archive?
> Thanks, all y'all E-Trakkers
> PS I made my first commutes in my three-wheeled EV this month...
> -Max Hall
> -maxo iname com
> -Plywood Guy, Scooters, and what-all: http://www.maxmatic.com