Table Of Contents

Safety Voltage and Current

Version:
    Last Modified: November 30, 2020

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    Notice  

    The protection provided by the PXIe-4139 can be impaired if it is used in a manner not described in the user documentation.

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    Warning  

    Take precautions to avoid electrical shock when operating this product at hazardous voltages.

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    Caution  

    Isolation voltage ratings apply to the voltage measured between any channel pin and the chassis ground. When operating channels in series or floating on top of external voltage references, ensure that no terminal exceeds this rating.

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    Attention  

    Les tensions nominales d'isolation s'appliquent à la tension mesurée entre n'importe quelle broche de voie et la masse du châssis. Lors de l'utilisation de voies en série ou flottantes en plus des références de tension externes, assurez-vous qu'aucun terminal ne dépasse cette valeur nominale.

    DC voltage

    ±60 V

    Channel-to-earth ground isolation

    Continuous

    150 VDC, CAT I

    Withstand

    1,000 V RMS, verified by a 5 s withstand

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    Caution  

    Do not connect the PXIe-4139 to signals or use for measurements within Measurement Categories II, III, or IV.

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    Attention  

    Ne connectez pas le PXIe-4139 à des signaux et ne l'utilisez pas pour effectuer des mesures dans les catégories de mesure II, III ou IV.

    Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage. MAINS is a hazardous live electrical supply system that powers equipment. This category is for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics.

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    Note  

    Measurement Categories CAT I and CAT O are equivalent. These test and measurement circuits are for other circuits not intended for direct connection to the MAINS building installations of Measurement Categories CAT II, CAT III, or CAT IV.

    DC current range

    ±3 A

    ±10 A, pulse only


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