5322A
Operators Manual
48
To view the SCAN value:
1. push the SETUP softkey.
2. Use the cursor keys or rotary knob to move the cursor to Line & Loop Scan
and either push the Select softkey or push in the rotary knob.
3. This submenu also has the option to conduct a SCAN automatically at
startup. When Start Up Scan is set to On, the Product performs scans
whenever it is powered up. RESCAN automatically measures the residual
impedance without connecting the front-panel connectors and stores the
value. The SCAN impedance value cannot be entered manually.
Note
The Product scans residual Line and Loop impedance only as a
symmetrical parameter, that is, both positive and negative half-wave
configurations are measured and the average value displayed.
Note
When the SCAN function is used in the Loop or Line impedance
mode, 4 A at 230 V and 2 A at 115 V line voltage amps of current
flows between the L and N mains wires. Therefore, this function can
be used on mains with residual current circuit breakers.
4. Push the Exit softkey repeatedly to return to the main screen.
To use this scanned value, you must select the SCAN or COMP residual
impedance compensation mode as described in the Select the Residual
Impedance Correction Mode section earlier in this chapter. When the Residual
Impedance Correction mode is set to SCAN, 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 Product
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
Product performs a SCAN measurement of these two impedances during its
power up cycle if the Start Up SCAN parameter is set to On.
To Next Page
Loading...
