Fluke 5320A User Manual

5320A
Users Manual
4-16
the stored scanned value measured in this section is added to the selected loop or line
impedance value, and their sum displayed as the calibration value.
Note
Line residual impedance and Loop residual impedance corrections are two
different and distinct values and are applied based on which correction
mode is selected. Loop impedance calibration is performed on the L and PE
mains wires from which the Calibrator draws power. Line impedance
calibration is performed on the L and N mains wires.
When the residual line or loop impedance compensation is set to SCAN, the Calibrator
performs a SCAN measurement of these two impedances during its power up cycle.
Setting the Compensation Residual Impedance Correction Value
The Calibrator has a compensation circuit to electrically compensate for residual
impedance. The compensation circuit is limited in test current amplitude and length of
measurement. The maximum test current generated by the UUT has to be less than 25 A
and l,500 ms in duration. The Calibrator will disconnect the compensation mode when
overloaded and automatically set the correction mode to OFF. The maximum
compensation is 2 Ω. To select the compensation method of residual impedance
correction:
1. Press the Setup softkey.
2. Using the cursor keys or rotary knob, move the cursor to Line imp. COMP value
(Loop imp. COMP value for Loop impedance function) and either press the
Select softkey or press in on the rotary knob.
The Calibrator measures the residual impedance and the compenstor uses the
measured value to set the compensation circuit.
3. Using the cursor keys or rotary knob, highlight Loop imp. correction and either
press the Select softkey or press in on the rotary knob.
4. Using the cursor keys or rotary knob, highlight COMP and either press the Select
softkey or press in on the rotary knob.
5. Press the Exit softkey repeatedly to return to the main menu.
Performing Leakage Current Calibration
The Calibrator employs four leakage current modes: passive leakage current, active
leakage current, differential leakage current, and substitute leakage current. Active
leakage current is only available with the 5320A/VLC models.
To select a leakage current mode:
1. Press N.
2. If the desired leakage current mode is not displayed, press the Mode softkey.
3. Using the cursor keys or rotary knob, highlight the desired selection (Passive,
Substitute, Differential, or Active) and either press E or press in on the rotary
knob.
The primary difference between passive leakage current and substitute leakage current is
the voltage used during the calibration. Passive leakage uses the line voltage of the UUT.
substitute leakage current uses voltages in the range of 30 to 35 volts.

Fluke 5320A Specifications

General

Brand	Fluke
Model	5320A
Category	Test Equipment
Language	English