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Goals and Symptoms
ION6200 or Siemens Access 9200 meters with the P24 low DC voltage power supply option will, in some cases, show readings of 1.5 - to 3.0 volts (Voltage Line to Neutral) for all phases, when nothing is connected to the voltage inputs.
Confirming the Problem:
If the ground cable is removed from the power supply module the line to neutral voltage reading returns to the correct reading of 0 Volts. Alternatively if you remove the Earth cable from the voltage input terminals the voltage reading returns to the correct reading of 0 Volts.
Causes and Fixes
ION6200 or Siemens Access 9200 meters with P24 low DC voltage power supplies will be shipped with ferrites that will cover and attach to the power supply cable. A document containing ferrite installation instructions will be available through the PowerLogic Website (http://www.powerlogic.com or http://www.global.powerlogic.com). All ION6200 or Siemens Access 9200 meters with P24 power supplies shipped after May 14, 2010 will include the ferrite and installation instructions. Those with previously installed ION6200 or Siemens Access 9200 meter types who experience this issue should install a ferrite using the installation instructions on the website. The ferrite information that we are using can be found below:
As suggested on page 11 of the ION6200 installation guide: Connect the power supply G (ground) terminal to the same point as the meter earth ground terminal.
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Date Created: April 28, 2010
Last Revised: April 30, 2010
Original Author: SN
All content © 1992-2010 Schneider Electric
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