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Chapter 11: Site Preparation – Series 3 / 79000 Current Reduction Conversion: Series 3 Current Reduction Conversion Procedure

5 Install the correct fuse in the door of the line module

if your line voltage change also requires a change in

the rating of the fuse (see

Table 11-6 on page 11-19).

WARNING

✸

Make sure the replacement fuse type (size) and

rating (current, speed, and voltage) is consistent

with the voltage level you are operating at. Using

a substitute fuse could result in a fire hazard.

6 Close the door of the line module and insert the

power cord in the ac input socket. Your power

supply is now configured to operate at the voltage

you selected.

Agilent 6634A Line Voltage Settings

The 6634A supply can be set to accept 100, 120, 220 or

240 volts ac input. You can convert line voltage by

setting three components: two line select switches (S2

and S3) and the rear panel fuse (F1). To convert the

supply from one line voltage to another, proceed as

follows:

1 Turn off the supply and use a #2 Pozidriv screwdriver

to remove the top cover by removing five screws:

two M5 on each side and one M4 on the rear panel.

2 Locate the line voltage select switches S2 and S3 (see

Figure 11-5 on page 11-16).

Table 11-4 6621A and 6624A fuse requirements

Line Voltage Fuse Needed Part Number

100 / 120 V 8 AF/250V 2110-0342

220 / 240 V 4 AF/250V 2110-0055

Agilent Technologies 3070 Series User Manual

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