Fuse Test; Fuse Replacement - Fluke 27 User Manual

27
Users Manual

Fuse Test

WWarnings
To avoid possible electric shock or personal
injury:
•
Remove the test leads and any input
signals before replacing battery or fuses.
•
Before closing battery door, make sure
fuse cover is in place.
•
Make sure the battery door is closed and
latched before you operate the meter.
To prevent arc blast and resulting injury,
install only the EXACT replacement fuse
listed in Table 4.
Turn the function selector switch to the Ω position.
1.
Connect a test lead from the z
2.
to the A input terminal.
3. The display should indicate between 0.1 ohm and
0.3 ohm. This tests F2 (11A, 1000V fast).
4. Move one end of the test lead from the A input
terminal to the mA/µA input terminal.
18
5.
6.

Fuse Replacement

Referring to Figure 1, use the following procedure to
check or replace the Fluke 27 fuses:
1.
2.
input terminal
3.
4.
5.
The display should indicate between 5.3 ohms and
6.0 ohms. This tests F1 (44/100A, 1000V fast.
If either of the above display indications is OL
(overload), replace the appropriate fuse.
WWarning
To avoid personal injury, do not use
makeshift fuses or short-circuit the fuse
holders.
Perform steps 1 through 4 of the battery replacement
procedure.
Pull the fuse cover down, then out of the meter.
Remove the defective fuse (or check continuity
through the suspected fuse), and if necessary install
a new fuse of the same size and rating.
Snap the fuse cover back into place.
Reinstall the battery spacer/cover as instructed in
step 6 of the battery replacement procedure.