Selecting Line Voltage; Connecting To Line Power - Fluke 5790B/3 Operator's Manual

5790A
Operators Manual

2-7. Selecting Line Voltage

The 5790A arrives from the factory configured for the line voltage normally appropriate
for the country of purchase, or as specified by you at the time of your order. The 5790A
also comes with the line power plug appropriate for the country of purchase. If you need
a different type, refer to Table 2-2 and Figure 2-1 for a list and illustrations of the line
power plug types available from Fluke.
Check the line power label on the rear panel of the 5790A to verify that the line voltage
matches local line power. Figure 2-3 shows the location of the line power label.
You can set the 5790A to operate from eight different nominal line voltages. Each
voltage setting has a voltage tolerance of +/-10 % and a frequency range of 47 to 63 Hz.
The line voltage switches are located on the lower left side of the rear panel.
To change the line voltage setting, set the line voltage selection switches to the
appropriate positions as shown in Figure 2-3.

2-8. Connecting to Line Power

To avoid shock hazard, connect the factory supplied three-
conductor line power cord to a properly grounded power outlet.
do not use a two-conductor adapter or extension cord; this will
break the protective ground connection.
If a two-conductor power cord must be used, a protective
grounding wire must be connected between the ground
terminal and earth ground before connecting the power cord or
operating the instrument.
After you verify that the line voltage selection switches are correctly set, verify that the
correct fuse for that line voltage is installed. Connect the 5790A to a properly grounded
three-prong outlet.
2-6
Warning