Manual Fluke 8845A (page 38 of 104) (English)

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8845A/8846A

Users Manual

2-4

Power Considerations

The Meter operates on power distribution standards found throughout the world, and

must be set up to operate on the line voltage that will power it. The Meter is packed ready

for use with a line voltage determined at the time of ordering. If the selected line voltage

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

pry to the right until the holder pops out, as shown in Figure 2-1.

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

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.

3. Remove the fuse and replace with one rated appropriately for the selected line-power

voltage. See Table 2-1.

4. Replace the selector block back into the fuse holder.

XW Warning

To avoid electric shock or fire, do not use makeshift fuses or

short-circuit the fuse holder. Use only Fluke fuses

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Fluke 8845A Manual

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