Beha-Amprobe ProInstall-75, Руководство пользователя

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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 lK. The
Prospective Earth Fault Current appears in amps or kilo 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.
Note: 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 position.
2. Connect all three leads to the L, PE, and N (red, green, and blue) terminals of the tester.
3. Press F1 to select L-PE. The appears to indicate that hi current trip mode is
selected.
4. Repeat Steps 4 through 8 from the preceding test.
W
Warning
The symbol on the LCD indicates the high current loop mode - any RCDs in the system
will trip - ensure there are no RCDs present.
Earth Resistance Testing by Loop Method
You can also use the tester to measure the earth resistance component of the total loop
resistance. Check your local regulations to determine if this method is acceptable in your
area. You can use three leads or the mains cord to perform this test. Use the connection
shown in Figure 8 when making a 3-wire connection for earth resistance loop test. Zero the
test leads (see sequence for Loop Impedance measurement).
L
N
PE
PE (Green)
L (Red)
N (Blue)
Figure 8. 3-Wire Connection for Earth Resistance Loop Test
To measure earth resistance using the loop test no trip mode:
1. Turn the rotary switch to the position