Fluke 1652C User Manual page 32

1652C/1653B/1654B
Users Manual
6. Press and release . Wait for the test to complete.
The primary (upper) display shows the loop impedance.
7. To read the Prospective Earth Fault Current, press the  key and
select l . The Prospective Earth Fault Current appears in amps or kilo
K
amps in the secondary (lower) display.
8. If the mains is too noisy, Err 5 will be displayed. (The measured value
accuracy is degraded by the noise.) Press the down arrow  to display
the measured value. Press the up arrow  to return to the Err 5
display.
This test will take several seconds to complete. If the mains is
disconnected while the test is active, the test automatically terminates.
Errors may occur due to preloading the circuit under test.
To measure loop impedance—Hi current trip mode:
If no RCDs are present in the system under test, you can use the high current
Line Earth (L-PE) loop impedance test.
1. Turn the rotary switch to the
2. Connect all three leads to the L, PE, and N (red, green, and blue) terminals
of the tester.
3. Press  to select L-PE. The
mode is selected.
4. Press  to select between  and m resolution for the test results. The
m resolution test takes between 30 and 60 seconds to complete.
5. Repeat Steps 4 through 8 from the preceding test.
24
Figure 12. Display After Zeroing
Note

position.

appears to indicate that hi current trip
apx033f.eps