HP 400E, Руководство по эксплуатации и обслуживанию

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Model 400EjEL
Section II
SECTION II
INSTALLATION
2-1.
INTRODUCTION.
2-2. This section contains information and instruc­
tions necessary for the installation and shipping of
the Model 400E and 400EL Voltmeters. Included arc
initial inspection procedures, power and grounding
requirements, installation information, and instruc­
tions for repackaging for shipment.
2-3.
INITIAL INSPECTION.
2-4. This instrument was carefully inspected both
mechanically and electrically before shipment. It
should be physically free of mars or scratches and in
perfect electrical order upon receipt. To confirm this,
the instrument should be inspected for physical
damage in transit. Also check for supplied accessories,
and test the electrical performance of the instrument
using tile procedure outlined in Paragraph
5-7. If
" tllere is damage or deficiency. see tile warranty on tile
inside front cover of this manual.
2-5.
POWER REQUIREMENTS.
2-6. The Model 400EjEL can be operated from any
source of 115 or 230 volts at 48 to 440 Hz or from
two 35 to 55 volt batteries connected to tile rear
panel BATTERY terminals. The
I
15/230 V sl ide
switcll on tile rear panel selects the desired line
voltage. Power dissipation is 10 wat ts maximum.
Before applying ac power to the
400H
or
400/:,'L.
be sure it is set for the proper line Ilolt­
age.
2-7.
POWER CORDS.
2-8. Figure
2-1
illustrates tile standard power plug
configurations tllat are used tllroughout tile United
States and in other countries. The -hp- part number
directly below each drawing is the part number for
a 400EjEL power cord equipped with a power plug
of that configuration. If the appropriate power cord
is 110t included with the instrument, notify the
nearest -hp- Sales and Service Office and a replace­
ment cord will be provided.
8120-1103
8120-0696
8120-1692
125V-6A'
� -�"\
250V
-
6A'
�
J
�
.
'
' .. ".::::::;�
8120-1521
8120-0698
'Ul LISTED FOR USE IN THE UNITED STATES OF AMERICA
Figure 2-1. Power Cords.
2·9.
GROUNDING REQUIREMENTS.
2-\0 To protect opCratll11' fwrsollncl. the N:Jlional
Electrical
Manut'adurcrs' Association (NEMA)
recommends that tile instruillent
panel
and cabinct be
grounded. All Hewll'n -PackJ rd inst
rumcn
ts arc
equipped with a three-wndu.:tor powcr cablc which,
when plugged into all appropriJtc receptacle, grollnds
the instrulllent. The offset
pin
on the power cable
three-prong connector is tile ground wire.
WARNING
For operator protectiol1 during ballery opera­
tioll, cOllnect chassis terlllinal (MP:!fI) to eartll
ground.
2-11.
INSTALLATION.
2-12. The Model 400EjEL is fully transistorized;
therefore, no special cooling is required. However, the
instrument should not be operated where the ambient
temperature exceeds
55° (
'
(131
°
F)
or the relative
humidity exceeds
9)1);.
2-13.
BENCH MOUNTING.
2·14. The Model 400EjEl is shipped with plastic
feet and tilt stand in place, ready for use as a bench
instrument.
2·\