Selecting The Line Voltage; Replacing The Fuses; Line-Power Fuse - Fluke 8845A User Manual

8845A/8846A
Users Manual
does not match the power the Meter will be plugged into, then the Meter's line voltage
setting must be changed and the line fuse possibly replaced.

Selecting the Line Voltage

The Meter will operate on any one of four different input line voltages. The set line
voltage is visible through the window in the line fuse holder, found on the Meter's rear
panel.
To change the line voltage:
1. Remove the power cord from the Meter.
2. Insert a small screwdriver blade in the narrow recess to the left of the fuse holder and
3. Remove the voltage selector block from the fuse holder.
4. Rotate the selector block until the preferred voltage rating faces outward.
5. Replace the selector block back into the fuse holder.
Changing the line voltage setting may require a different line-power fuse for proper
operation. Check Table 2-1 for the appropriate fuse for the selected line voltage.
With the voltage set and appropriate fuse installed, replace the fuse holder back into the
Meter and reconnect the power cord.

Replacing the Fuses

The Meter employs fuses to protect both the line-power and current measurement inputs.

Line-Power Fuse

The Meter has a line-power fuse in series with the power supply. Table 2-1 indicates the
proper fuse for each of the four line voltage selections. This fuse is located on the rear-
panel.
To replace this fuse:
1. Unplug the power cord from the Meter.
2. Remove the fuse holder by inserting a small screwdriver blade in the narrow recess to
3. Remove the fuse and replace with one rated appropriately for the selected line-power
4. Replace the selector block back into the fuse holder.
To avoid electric shock or fire, do not use makeshift fuses or
short-circuit the fuse holder. Use only Fluke fuses
2-4
pry to the right until the holder pops out, as shown in Figure 2-1.
the left of the fuse holder and pry to the right until the holder pops out as shown in
Figure 2-1. The Meter is shipped with a replacement fuse of the same rating as the
fuse installed in the fuse block.
voltage. See Table 2-1.
XW Warning