Power Cable; Repackaging For Shipment - HP 6177B Operating And Service Manual

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2-16 INPUT POWER REQUIR"M"II:TS
2-17 This power supply may be operated from
either
2.
nominal 115 Volt or 230 Volt 4S-63Hz pow-
er source. The unit, as shipped from the factory,
is wirec. for 115 Volt operation. The input power
required when operated irom a 115 Volt 60Hz power
sourCE at full load is 55 Vlatts and 0.6 Ampere.
2-18 CONNECTIONS FOn 230 VOLT OPERATION
(Figure 2-3)
.~
I
!
ip
b
JI
FI
o
P/O SI
01
TRANSFORMER PRIMARY
CONNECTIONS FOR 230V
OPERATION.
Figure 2-3. Primary Connections
TI
2-19 Normally, the two primary windings of the
input transformer are connected in paranei for op-
eration from 115 Volt source, To convert the power
supply to operation from a 230 Volt source, the
power transformer windings are connected in series
as follows:
a. Unplug the line cord and remove the bot-
tom cover from the unit.
2-2
b. Unsoider jumper between taps 1 and 3
and taps 2 and 4. These taps are shown in Figure
2-4, and are located on the bottom of the unit.
c. Solder jumper between taps 2 and 3.
d. Replace existing fuse with 0.5 Ampere,
230 Volt fuse. Replace cover and operate unit
normally.
2-20 POWER CABLE
2-21 To protect operating personnel, the National
Electrical Manufacturers Association (NEMA) rec-
ommends that the instrument panel and cabinet be
grounded. This instrument is equipped with a
three conductor power cable. The third conductor
is the ground conductor and when the cable is
plugged into an appropriate receptacle, the instru-
ment is grounded. The offset pin on the power
cable three-prong connector is the ground connec-
tion.
2-22 To preserve the protection feature when op-
erating the instrument from a Mo-contact outlet,
use a three-prong to two-prong adapter and con-
nect the green lead on the adapter to ground.
2-23 REPACKAGING FOR SHIPMENT
2-24 To insure safe shipment of the instrument, it
is recommended that the package designeci for the
instrument be usee. The original packaging mate-
erial is reusable. If it is not available, contact
your local Hewlett-Packard field office to obtain
the materials. This office will also furnish the ad-
dress of the nearest service office to which the in-
strument can be shipped. Be sure to attach a tag to
the instrument which specifies the owner, model
number, full seria 1 number, and service required,
or a brief description of the trouble.