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Switchgear Viewing Windows
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Author:  arcflash71 [ Tue May 17, 2011 4:37 pm ]
Post subject:  Switchgear Viewing Windows

Operators in one of our facilities want approval to install viewing windows on 13.8kV switchgear doors to view breaker status (open, closed, test position, etc.).

These are a retrofit product from Fluke that have voltage, temperature and pull-out ratings that exceed IEEE C37.20.2 standards for viewing windows.

Is this a reasonably safe thing to do with respect to arc flash?

Regards

Author:  wbd [ Wed May 18, 2011 4:21 am ]
Post subject: 

Since the consensus is that credit is not taken for switchgear, MCC, switch doors for reducing AFH, unless specifically designed and rated as arc resistant, I don't think installing the windows will affect the choice of PPE.

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