Why Does My PXI-1042 Chassis Trip a GFCI Breaker?Hardware: PXI/CompactPCI>>Chassis>>PXI-1042
Problem: Why does my PXI-1042 or PXI-1042Q chassis trip a Ground Fault Current Interrupter (GFCI) breaker? Solution: Leakage current is something that UL certification covers for the PXI chassis. There is a specified maximum amount of leakage current allowed for a chassis when a high potential is supplied to it. Leakage may exist even if the chassis is turned off. The UL leakage current specification for the PXI-1042 and 1042Q chassis is 3.5 mA. Information on GFCI : GFCI monitors the current flow discrepancy between the hot and neutral pins of the plug and if it exceeds by so much (in the order mA usually) it will trip. There are different classes of GFCIs, each with a different rating. A UL Class A GFCI is meant to trip between 3 mA and 7 mA. A UL Class B GFCI is meant to trip between 20 mA to 40 mA. Related Links: Developer Zone Tutorial : What Is PXI? Product Manual : NI PXI-1042 Series User Manual and Specifications Attachments:
Report Date: 09/16/2008 Last Updated: 09/17/2008 Document ID: 4PFEJ20S |
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