dc rated switches [RE-wrenches]
Brian Sullivan
brian at paloaltohardware.com
Wed May 11 12:56:15 PDT 2005
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we installed several of these old Siemens switches before the Square D
switches at the 600VDC rating... and they were shipped to me from
Siemens with a jumper wire installed, so that the positive conductor
would pass through twice.
Eric Smiley wrote:
>I recently visited a grid-tie PV system where a siemens Heavy Duty Switch
>(Type VBII) was used for the array disconnect. In a negative grounded
>system do these switches need to have the positive conductor pass through
>two (or more) poles of the switch in DC applications? I can't find
>anything on the Seimens site to indicate yea or nay.
>
>
>Eric Smiley, MASc
>Project Leader - Technology Centre
>British Columbia Institute of Technology
>
>NE25 - 3700 Willingdon Avenue
>Burnaby, British Columbia
>Canada V5G 3H2
>
>phone: 604.432.8657 fax: 604.436.0286
>esmiley at bcit.ca
>
> _0
> _/_/&
>(_)/ (_)
>
>
>
Your free subscription is supported by today's sponsor:
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