Fluke 1625 Safety Control Measurements, Measurement of Interference - Voltages and Frequen- cies

Earth/Ground Tester

Procedure of Measurements

Safety Control Measurements

Before each measurement the instrument automatically checks the measuring conditions and, while simultaneously displaying the kind of error, prevents measurements from being started under the following conditions:

•excessive voltage on the sockets (> 24 V in RE and R~; > 3 V in RF)

•wrong or incomplete connection

•Problems during the measuring sequence (display "E1 ... E5") see display description in the section ‘Procedure of Measurements’.

•Battery voltage too low ( display LO-BAT )

Measurement of Interference - Voltages and Frequen- cies

This measuring function detects possible interference voltages and their fre- quencies. This function is automatically active in every switch position before an earthing or resistance measurement. If the pre-set limit values are exceeded, the interference voltage is indicated as too high and a measurement automati- cally prevented .The frequency of an interference voltage is only measurable if the level of this intereference voltage is higher than 1 V. See Figure 7.

Bring central rotary switch in desired position, read out measured value of in- terference voltage, measured value of interference frequency is displayed with "DISPLAY".

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