Fluke 1650B [28/62] Warning

Fluke 1650B [28/62] Warning
165XB
Users Manual
20
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
x position.
2. Connect all three leads to the L, PE, and N (red, green, and blue) terminals
of the tester.
3. Press 1 to select L-PE. The
o appears to indicate that hi current trip
mode is selected.
4. Repeat Steps 4 through 8 from the preceding test.
XW Warning
The symbol o 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 12 when making a 3-wire
connection for earth resistance loop test. Zero the test leads (see sequence for
Loop Impedance measurement).

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