Matt,
We're actually running without the power supply grounded at most sites,
but it doesn't matter for the equipment smoking issue because the
Compact has DC+ connected to it's chassis ground. You can verify this
by measuring for voltage or resistance between the negative terminal on
your power supply and the ground lug or mounting bracked on your
Compact. If you have a +48 device on the tower which also has a chassis
ground connected to DC then it won't matter whether or not you have a
ground at the bottom.....you'll have a short through the tower and
either blow a fuse or smoke something.
What should be safe in that mixed DC environment, in my opinion, is an
isolated 48v to 48v converter such as a Meanwell RSD-200C-48 or
equivalent. You put it between your rectifier and the Compact power
cable.
Good luck out there,
Adam
------ Original Message ------
From: "Matt Lauer" <[email protected]>
To: [email protected]
Sent: 12/21/2016 8:54:09 AM
Subject: [Telrad] Neg 48 on BreezeCompact 1000
I have a BreezeCompact 1000 powered up on the bench. I read the
installation manual and I do see it is advised to connect “+ Output to
Site Ground” per page 24 of the manual. I have mixed equipment in our
tower cabinet so we have a floating ground - neither a negative or a
positive is bonded to the cabinet/chassis ground. I will burn up other
equipment if I positively ground the + output from our rectifier. Is
anyone else running Telrad in production with a floating ground?
Matt Lauer
Solvaris, Inc.
586.453.0440 p
248.495.3977 c
586.453.0805 f
[email protected]
www.solvaris.com
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