Fuse Protection - HP 7475a Operation And Interconnection Manual

Fuse Protection

To avoid the possibility of injury, disconnect the ac
power cord before installing or replacing a fuse.
The 7475A is factory equipped with a fuse appropriate to the factory-set
line voltage. The selected line voltage and the corresponding fuse rat·
ing is shown in the recessed window on the rear panel. To change or
inspect the line fuse, turn the fuse holder on the rear panel in the direc·
tion of the arrow (counterclockwise) until the fuse holder releases.
Remove the fuse holder and insert a slo-blo type T fuse which corre­
sponds with the voltage setting. Fuse ratings for each voltage setting
are shown below. Place the fuse holder back into the plotter, and turn
the fuse holder clockwise, while pressing in, until the lock engages and
the fuse remains fl u sh with its casing.
Voltage
100 Vor 120V
220 V or 240 V
NOTE: Fuses and fuse caps appropriate to the plotter shipment desti­
nation are installed at the factory. U.S. fuses are '4
use HP 2110-0565 fuse caps. European fuses are 5
use HP 2110-0567 fuse caps
Grounding Requirements
To protect operating personnel, the plotter must be properly grounded.
The plotter is equipped with a thr
connected to an appropriate power outlet, grounds the plotter. To pre­
serve this protection feature, do not operate the plotter from a line
power outlet which has no ground connection.
Power Cord
Power cords with different plugs are available for the plotter. The cord
packaged with each plotter depends upon its destination. The power
cords supplied by HP have a standard female plug which mates with
the power-input socket in the plotter. The polarities of the male plugs
shown in the accompanying chart are matched to the line power outlets
used in the indicated areas. If the plotter has the wrong power cord for
the area, please contact your local HP Sales and Support Office or
authorized HP dealer.
WARNING
U.S. Fuse
0.6A T(SB)/125 V
0.3AT(SB)/250 V
.•
ee-co
nductor power cable which, when
OWNER'S INFORMATION
European Fuse
-
0.3151 AT(SB)/250 V
1 % inches and
X
20 millimetres and
X
1-5