Agilent Technologies 3070 Series, Подготовка площадки

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© Agilent Technologies 1989–2002 Agilent 3070 / 79000 Site Preparation 10-115
Chapter 10: Site Preparation – Power Requirements for Older Systems: Tester Power Requirements (Series I/II)
Table 10-21 on page 10-117 is an example that
illustrates how to use Table 10-22 through Table 10-27 .
Each power option table specifies the current required
for system devices in the left column; these currents
have been calculated at 9 percent below nominal voltage
(worst case). List the current for devices that will be
part of the installed system in the column to the right.
(The currents for single-phase and three-phase systems
should be balanced as closely as possible by plugging
the devices into the appropriate outlets as designated in
the tables. Your system will be shipped from the factory
configured for the best current balance that can be
obtained.) Total the device currents listed in each
column to obtain the current required for each phase of
mains power.
Table 10-21 illustrates the current requirements of a
typical two-module system operating on two-phase
power. Note how the devices are allocated to different
outlets to try to balance the currents of the center-tapped
phase; as in this example, these currents sometimes
can’t be balanced exactly. The total current required is