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kenryan
Joined: 20 Oct 2009
Posts: 429
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 Posted: Thu Dec 18, 2014 4:01 pm Post subject: crowbar placement in system |
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I notice in the Z diagrams that the crowbar seems to be placed in the system downstream from the bus. Since we are trying to protect against over voltage from the alternator, it seems more sensible to place it between the alternator output and the battery. Is there a reason it's not done that way? (such as nuisance trips)
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jluckey(at)pacbell.net
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| Posted: Thu Dec 18, 2014 4:31 pm Post subject: crowbar placement in system |
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Remember that the Crowbar's mission is to blow the breaker that feeds the regulator thus shutting-down the alternator. Therefore it needs to be placed on the load side of the regulator breaker.
-Jeff
On Thursday, December 18, 2014 4:11 PM, Ken Ryan <keninalaska(at)gmail.com> wrote:
I notice in the Z diagrams that the crowbar seems to be placed in the system downstream from the bus. Since we are trying to protect against over voltage from the alternator, it seems more sensible to place it between the alternator output and the battery. Is there a reason it's not done that way? (such as nuisance trips)
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kenryan
Joined: 20 Oct 2009
Posts: 429
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| Posted: Thu Dec 18, 2014 4:41 pm Post subject: crowbar placement in system |
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Oops! I knew that! Been staring at schematics too long.
On Thu, Dec 18, 2014 at 3:28 PM, Jeff Luckey <jluckey(at)pacbell.net (jluckey(at)pacbell.net)> wrote:[quote]Remember that the Crowbar's mission is to blow the breaker that feeds the regulator thus shutting-down the alternator. Therefore it needs to be placed on the load side of the regulator breaker.
-Jeff
On Thursday, December 18, 2014 4:11 PM, Ken Ryan <keninalaska(at)gmail.com (keninalaska(at)gmail.com)> wrote:
I notice in the Z diagrams that the crowbar seems to be placed in the system downstream from the bus. Since we are trying to protect against over voltage from the alternator, it seems more sensible to place it between the alternator output and the battery. Is there a reason it's not done that way? (such as nuisance trips)
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