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Installation Of Shunt

Started by AB2005, May 13 2008 05:53 AM

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#1 AB2005

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Posted 13 May 2008 - 05:53 AM

Dear All

We have a DC drive 220KW for a DC motor 218KW 400V in our Corrugator machine. I want o install three digital ampere meters for displaying the armature current of motor at three different places. One meter would be installed at DC drive panel and two would be installed about 40meters away from DC drive panel. Please assist if is it possible with only one SHUNT or I would have to install one shunt for each meter?

"Don't assume any thing, always check/ask and clear yourself".

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#2 marke

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Posted 13 May 2008 - 06:28 AM

Hello AB2005

There is certainly no problem running more than one meter off a single shunt, but it sounds like there are reasonable distances between the shunt and the meters, and the meters are electronic, high input impedance devices with a very low input voltage.

I would recommend that you fit a 4-20mA transmitter at the shunt and operate the meters in series on the 4-20mA output, otherwise, you wil have major noise issues affecting the readings on the meters.

Best regards,
Mark