Fluke 8808A User Manual - Page 28

Selecting the Line Voltage, Replacing the Fuses, Line-Power Fuse, To avoid electric shock or fire

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8808A Users Manual Selecting the Line Voltage The Meter operates on four different input line voltages. The selected line-voltage setting is visible through the window in the line-fuse holder on the Meter's rear panel. 1. Unplug the power cord. 2. Insert a small screwdriver blade into the narrow recess to the left of the fuse holder and pry it to the right until the holder pops out. See Figure 2-1. 3. Remove the voltage-selector block from the fuse holder. 4. Rotate the selector block until the desired voltage rating faces outward. 5. Replace the selector block back into the fuse holder. 6. Install the fuse holder back into the Meter and reconnect the power cord. Changing the line-voltage setting may require a different line-power fuse for proper operation. Replacing the Fuses The Meter uses one fuse to protect the line-power input and two fuses to protect the 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. The line-power fuse is accessed through the rear panel. 1. Unplug the power cord. 2. Insert a small screwdriver blade into the narrow recess to the left of the fuse holder and pry it to the right until the holder pops out. See Figure 2-1. 3. Remove the fuse and replace it with a fuse of an appropriate rating 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. Table 2-1. Line Voltage to Fuse Rating Line Voltage Selection 100 / 120 220 / 240 Fuse Rating 0.125 A, 250 V (slow blow) 0.063 A, 250 V (slow blow) 2-4

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8808A
Users Manual
2-4
Selecting the Line Voltage
The Meter operates on four different input line voltages. The selected line-voltage setting
is visible through the window in the line-fuse holder on the Meter’s rear panel.
1.
Unplug the power cord.
2.
Insert a small screwdriver blade into the narrow recess to the left of the fuse
holder and pry it to the right until the holder pops out. See Figure 2-1.
3.
Remove the voltage-selector block from the fuse holder.
4.
Rotate the selector block until the desired voltage rating faces outward.
5.
Replace the selector block back into the fuse holder.
6.
Install the fuse holder back into the Meter and reconnect the power cord.
Changing the line-voltage setting may require a different line-power fuse for proper
operation.
Replacing the Fuses
The Meter uses one fuse to protect the line-power input and two fuses to protect the
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. The line-power fuse is accessed
through the rear panel.
1.
Unplug the power cord.
2.
Insert a small screwdriver blade into the narrow recess to the left of the fuse
holder and pry it to the right until the holder pops out. See Figure 2-1.
3.
Remove the fuse and replace it with a fuse of an appropriate rating 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.
Table 2-1. Line Voltage to Fuse Rating
Line Voltage Selection
Fuse Rating
100 / 120
0.125 A, 250 V (slow blow)
220 / 240
0.063 A, 250 V (slow blow)