Fluke Calibration 5322A Operator's Manual page 51

The Loop/Line Impedance function has protection against overloading. The total
electric power dissipated in the function is continuously measured and in case of
overloading an appropriate error message is shown. Current status of dissipated
power is indicated on the display in the main parameter field. The bar with Temp
label shows how close the function is to overloading. The empty bar means that
full loading is available and the blue part of the bar shows the percent of
dissipated power. This protection is shared with two other functions, RCD and
Ground Bond Resistance. See Figure 7.
Fixed Mains
Socket/Outlet
Line
Neutral
Figure 7. Simplified Loop Impedance Source Schematic
To set the Loop or Line Impedance Output:
1. Push .
2. If the displayed function is not the desired function, push the Mode softkey.
3. Using the cursor keys or rotary knob, highlight either Loop or Line and either
push Select or push in the rotary knob.
The value retained from the last time of use is displayed in the OUTPUT area
of the display.
4. Change the resistance value using the rotary knob or the keypad. If the
keypad entered value is not exactly one of the possible selections, the
resistance closest to the entered value will be selected.
To avoid electric shock, ensure the Product 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 section of the display as a guide, connect the DUT
terminals to the Product OUTPUT HI and LO terminals. The resistance for the
Line Impedance function is applied to the L and N terminals of the Z
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, push  to
connect the DUT to mains voltage with the selected resistance.
R
Compensator
XWWarning
Multifunction Electrical Tester Calibrator
Use the Loop and Line Impedance Function
Front Panel
Z , Z , RCD
L GND
L
PE
, Z
L
iep014.eps
GND,
43