AEMC instruments 6416, Руководство пользователя

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Clamp-on Ground Resistance Tester Model 6416 31
6.1.1.2 Measurement Results
Once the measurement has
stabilized, the display indicates:
■ The leakage current (l).
■ The impedance of the loop at the
frequency of 2083 Hz.
The impedance is measured only if the
leakage current is less than 10 A. In
the 10 to 40 A range, only the current is
displayed; the NOISE symbol blinks and
the impedance is replaced by dashes.
Figure 6-1
To store the measurement into memory, press the MEM button (see § 5.7.2).
If the contact voltage exceeds 50 V, the display indicates the current/impedance
measurements and the contact voltage alternately.
6.1.2 Advanced Mode
Selection of Advanced mode is performed in the SET-UP (see § 4.4, menu #9).
In this mode, three measurement screens are provided, impedance referred
to the chosen frequency and leakage current, contact voltage, display of R
(resistance) and L (inductance). The clamp measures the loop impedance
(Ω) at the frequency of 2083 Hz. However, in addition to what is measured in
Standard mode, the impedance is recalculated at the frequency defined by the
configuration.
The frequency and alarm thresholds can be configured as desired (see § 4.4,
menus #4, #5 & #6).
6.1.2.1 Making a Measurement
■ Turn the rotary switch to the Ω+A position, and wait several seconds while
the instrument performs internal calibration.
■ Clamp around the conductor to be measured. If the clamp is incorrectly
closed, the icon is displayed.
■ If necessary, use the HOLD button to freeze the measurement.
■ If necessary, use the MEM button to store the measurement.