Pro-face PS-4000B Series, Руководство пользователя

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Main Power Connection
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Shared Ground not Allowed
Do not connect the PS-B unit to ground through other devices using the SG
terminals.
Shared Ground - Avoid Ground Loop
When connecting an external device to a PS-B unit with the Shield Ground (SG),
ensure that no ground loop is created. The PS-B unit’s FG and SG are connected
internally.
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PS-B unit
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PS-B unit
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PS-B unit