Hmmm, in which case having a 35amp circuit breaker in its unregulated output
is pointless. It will never trip because the dynamo at 20 amp rating is
incapable of supplying that current in the first place unless it goes into
substantial overspeed.

What should be included is over-voltage protection across the regulated
output that breaks (or shunts) the circuit in the event of regulator
failure. Breaking unregulated output by circuit breaker or simple switch
generates huge voltages in the dynamo coils that could break down the
insulation around the wires in it because the power from the coils spinning
in the non-adjustable non turn offable magnetic field has nowhere else to
go. You should never spin a dynamo without somewhere for the excess power to
go.......even if it just literally a "crowbar" across the output.

Alternators are very different because the coils are energised to produce
the field (as opposed to magnet) and can thus be turned off. Spinning of the
armature thus has no output and no adverse impact. 

John Martindale
29 Jane Circuit
Toormina NSW 2452
Australia

ph:61 2 6658 4767
m:0403 432179
email:john_martindale at bigpond.com
web site: 
-----Original Message-----
From: KRnet [mailto:krnet-bounces at list.krnet.org] On Behalf Of
brian.kraut--- via KRnet
Sent: Friday, 2 October 2015 11:39 AM
To: KRnet
Cc: brian.kraut at eamanufacturing.com
Subject: Re: KR> Electrical System

It is a permanent magnet generator.  If I recall correctly it is a John
Deer part.


-------- Original Message --------
Subject: Re: KR> Electrical System
From: John Martindale via KRnet <krnet at list.krnet.org>
List-Post: krnet@list.krnet.org
Date: Thu, October 01, 2015 1:43 pm
To: "'KRnet'" <krnet at list.krnet.org>
Cc: John Martindale <john_martindale at bigpond.com>

Hi Sid

What kind of alternator is that VW Diehl alternator? Is it field
regulated
aka most cars or a permanent magnet dynamo with regulator aka the small
John
Deere or Kubota tractors?

Cheers John 

John Martindale
29 Jane Circuit
Toormina NSW 2452
Australia

ph:61 2 6658 4767
m:0403 432179
email:john_martindale at bigpond.com
web site: 
-----Original Message-----
From: KRnet [mailto:krnet-bounces at list.krnet.org] On Behalf Of Sid Wood
via
KRnet
Sent: Friday, 2 October 2015 1:31 AM
To: krnet at list.krnet.org
Cc: Sid Wood
Subject: Re: KR> Electrical System

I have used the Expbus for 5 years on my KR-2. I added a 35 amp circuit 
breaker for the VW Diehl alternator rated at 20 amps. .....sheep shears



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Version: 2015.0.6140 / Virus Database: 4435/10737 - Release Date:
10/01/15


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Version: 2015.0.6140 / Virus Database: 4435/10739 - Release Date: 10/01/15



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Checked by AVG - www.avg.com
Version: 2015.0.6140 / Virus Database: 4435/10739 - Release Date: 10/01/15


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