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GracePort®
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GracePESDs® - Voltage Indicators
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GracePESDs® - Safe Test Point and Voltage Test Station (VTS)
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GraceSense™ Predictive Maintenance System
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Q:How to determine the GracePESD Test point Voltage readings?
A.) GracePESD devices have varying resistance across test points, causing voltage reduction.
The R-3MT = 102kΩ per point
The R-3MT-VI (ChekVolt) = 164kΩ per point
The following formula can be used to find the expected voltage, for accuracy we recommened 10MOhm Multimeter.
(Meter Resistance / Sum Test point Resistance) x System Voltage = Calculated Reduction Voltage(Expected Meter reading)
Example "R-3MT":
(1MΩ / (102kΩ + 102kΩ)) x 480V = 398V
For a more in depth explanation please see our Safe-Test Point High Impedance Technical Note here.
If you require further assistance please contact the Sales Department at Sales@gracetechnologies.com