Fluke 5320A User Manual

5320A
Users Manual
4-12
4. If necessary, reset the resistance value using the rotary knob. The keypad can also be
used to enter a value. If the entered value is not exactly one of the 16 possible
selections, the resistance closest to the entered value will be selected.
XWWarning
To avoid electric shock, ensure the Calibrator is in standby
before making connections to the L, PE and N connectors.
Lethal voltages exist on these terminals during loop and line
impedance calibration.
5. With the TERMINALS area of the display as a guide, connect the UUT’s terminals
to the Calibrator’s terminals. The resistance for the Line Impedance function is
applied to the L and N terminals of the Z
L
, Z
GND,
and RCD output terminals. For
Loop Impedance, the resistance is applied to the L and PE terminals.
6. After confirming that the settings and connections are correct, press O to connect
the UUT to mains voltage with the selected resistance.
While connected to the UUT, the Calibrator monitors the voltage and current appearing
across the resistance. If the current or voltage exceeds acceptable limits, the Calibrator
will disconnect the output terminals and display an error message. The actual current
flowing in the resistance is displayed in the PARAMETERS area of the display. In
addition to actual current, the polarity of the test signal generated by the UUT, the
Prospective Fault Current (PFC), and the mode of residual impedance correction are
displayed in the PARAMETERS area of the display.
The polarity of the UUT signal is identified as fullwave (I or J), positive (W) or
negative (X). The prospective fault current is computed by measuring the actual ac
voltage on the output terminals, and then multiplying it by the residual resistance
calibration value.
Note
The displayed resistance value appears at the Calibrator’s terminals. It
does not include test lead resistance or contact resistance between the UUT
and the Calibrator terminals.
With the output connected, adjust the resistance value using the rotary knob or numeric
keypad. Any new values set through the front panel take approximately 500 ms to appear
on the output terminals. If during the adjustment the current or voltage exceeds
acceptable limits, the output terminals will be disconnected and an error message
displayed. If the set value should exceed the upper range limit or lower range limit, the
Calibrator displays “Value too high” or “Value too low”, respectively.

Fluke 5320A Specifications

General

Brand	Fluke
Model	5320A
Category	Test Equipment
Language	English