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munkey
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Joined: 1-May 09
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Last Seen: 23rd March 2010 - 08:58 PM
Local Time: Sep 3 2010, 06:57 PM
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1 May 2009
Hi there,
Some panels i have recently worked on have drawn a question. Switch gear in these panels provide a start/stop and reference signal for inverters. The power supply for these inverters is through fuses directly from the main isolator. When the estop is pressed, the control voltage is dropped out. But only the start/stop signal is lost not the power! Can anyone offer any advice as to whether this is legal, and whether i should run power through a contactor that will break the supply. Other problems are that these inverters drive shakers and pump which have to be brought to a controlled stop (ramp). Breaking the power will allow them to coast to a stop (uncontrolled) Thanks |
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Lo-Fi Version | Time is now: 3rd September 2010 - 06:57 PM |
