Current test switch burden
Current test switch burden
(OP)
Does anyone have any test data for the burden of a FT-1 current test switch? I am trying to do a burden calculation for a CT circuit with 2 relays and 3 FT-1 test switches in the circuit. I am going to use .1 ohm per test switch and that to include the termination contact resistance but don't want to be to low or to high.
Thanks
Thanks






RE: Current test switch burden
RE: Current test switch burden
RE: Current test switch burden
RE: Current test switch burden
It was by secure control
"Test Blocks, Plugs, and Probes – or When
the Dynamo Meets the Integrated Circuit"
David R. Blair
BHP Energy Solutions, Ltd.
http://www.google.com/url?q=http://www.secucontrol...
RE: Current test switch burden
If neglecting this impedance was creating actual problems with CT saturation and burden error, I think the issue would be known and practicing engineers would be including it.
RE: Current test switch burden
I formerly worked for a company that made test switches and did some informal testing that showed an average of around 1-2 milli-ohms per circuit (meaning 2 test switches) and this included all of the crimp connectors, etc...
RE: Current test switch burden
Good on ya,
Goober Dave
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