Installation Of Shunt, DC Drives |
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Installation Of Shunt, DC Drives |
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 May 13 2008, 05:53 AM
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#1
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Senior Member  Group: Full Member Posts: 221 Joined: 21-October 06 Member No.: 2,159  |
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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May 13 2008, 06:28 AM
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#2
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Posting Freak Group: Moderator Posts: 2,099 Joined: 24-April 02 From: Christchurch, New Zealand Member No.: 1 |
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 -------------------- Mark Empson administrator
Skype Contact = markempson | phone +64 274 363 067 LMPForum | LMP Tech Warehouse | L M Photonics Ltd | Empson family | Advanced Motor Control Ltd | LMP Software | Mark Empson Website |
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May 15 2008, 04:18 AM
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#3
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Senior Member Group: Full Member Posts: 221 Joined: 21-October 06 Member No.: 2,159 |
What happen if i install Analogue Ampare meters? would they work or not?
-------------------- "Don't assume any thing, always check/ask and clear yourself".
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