Agilent Technologies 3070 Series, Подготовка площадки

Страница: 163 / 410

© Agilent Technologies 1989–2002 Agilent 3070 / 79000 Site Preparation 10-2
Chapter 10: Site Preparation – Power Requirements for Older Systems: Introduction
Introduction
This chapter provides power requirements and wiring
information for older Agilent 3070 family systems. This
includes systems that used earlier models of power
distribution units (PDUs).
The E1135A/B PDU is no longer manufactured; the
E1135C replaced it.
Power is connected to both E1135A and E1135B the
same way. The power connections are very similar for
the E1135C, except the input power is connected to a
mains disconnect switch. If you want information on a
current Series 3 systems, see Chapter 6,
Site
Preparation – Power Requirements.
CAUTION
✸
The wire sizes recommended in this chapter are
for the SO cord from the receptacle to the system.
The electrician has the responsibility to size the
service to the receptacle so that the voltage drop
from the source to the 3070 system does not
exceed 5-percent of the nominal voltage.
NOTE
If a replacement E1135C is being installed and the
recommended conductor size is greater than 10
square millimeters (#8 AWG), which is the largest
conductor size that will easily fit in the E1135C
PDU, see the section
Connecting a Pigtail to the
E1135C PDU
on page 11-84.
There are two easy ways to determine whether you have
a Series I or a Series II system: The Series II system has
the "Series II" logo printed on the front of the testhead,
and it has the wide pods (integrated cabinets) on both
sides of the testhead. See
Figure 10-1 on page 10-4 to
identify where the power distribution unit (PDU) or
power distribution kit (PDK) is located on your system.
Figure 10-1 shows the rear views of the older 3070 and
3070 Series II family testheads and support bays.
Following are important points to note about
Figure
10-1 :
■
The 317X Series I system is the only one that uses
the E1170-80003 PDK. The PDK has the same
functionality as the older E1099A PDU, but is
re-packaged to fit in the testhead (see the
3070
Theory & Repair Manual , Chapter 4,
E4000-90120, for details).
The 307X Series I system is the only one that uses
two E1131A PDUs or one 44940A/B or E1099A
in the support bay; there is no PDU in the 307X
Series I testhead. Each PDU requires its own ac
mains supply.
■
The older 317X Series II and 307X Series II
systems use the E1131A PDU. The 307X Series
II system has one PDU in the testhead cabinet and
another in the support bay.
■
The 307X Series I system is the only one that uses
two E1135A/B PDUs in the support bay; there is
no PDU in the 307X testhead. Each PDU requires
its own ac mains supply.