Section Ii Installation; Initial Inspection; Preparation For Use - HP 436A Operating And Service Manual

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Model 436A
Installation
SECTION II
INSTALLATION
2-1. INTRODUCTION
2-2. This section provides
all
information neces-
sary to install the Power Meter. Covered in the
section are initial inspection, power requirements,
line voltage selection, interconnection, circuit
options, mounting, storage, and repackaging for
shipment.
2-3.
INITIAL INSPECTION
2-4. Inspect the shipping container for damage. If
the shipping container or cushioning material is
damaged, it should be kept until the contents of
the shipment have been checked for completeness
and the instrument has been checked mechanically
and electrically. The contents of the shipment
should be as shown in Figure 1-1. Procedures for
checking electrical performance are given in
Section IV. If the contents are incomplete, if there
is mechanical damage or defect, or if the instru-
ment does not pass the electrical performance test,
notify the nearest Hewlett-Packard office.
If
the
shipping container is. damaged, or the cushioning
material shows signs of stress, notify the carrier as
well as the Hewlett-Packard office. Keep the
shipping materials for the carrier's inspection.
2-5. PREPARATION FOR USE
2-6. Power Requirements
2-7. The Power Meter requires a power source of
100, 120, 220, or 240 Vac, +5%, -10%, 48 to
440 Hz single phase. Power consumption is approx-
imately 20 watts.
I
WARNING
I
If this instrument
is
to be energized via an
autotransformer for voltage reduction, make
sure the common terminal is connected to the
earthed pole of the power source.
2-8. Line Voltage and Fuse Selection
BEFORE PLUGGING THIS INSTRUMENT
into the Mains (line) voltage, be sure the cor-
rect voltage and fuse have been selected.
2-9. A rear panel, line power module permits
operation from 100, 120, 220, or 240 Vac. The
number visible in the window (located on the
module) indicates the nominal line voltage to
which the instrument must be connected. Verify
that the line voltage selection card and the fuse
are matched to the power source. Refer to Figure
2-1, Line Voltage and Fuse Selection. Table 2-1
lists the ratings and HP part numbers for the
replaceable fuses.
I
WARNING
I
For protection against fire hazard, the
line fuse for 220/240Voperation should
only be a 250V slow blow fuse with the
correct current rating.
Operating voltage is shown
in module window.
SELECTION OF OPERATING VOLTAGE
1. Open cover door, pull the FUSE PULL lever and rotate to
left. Remove the fuse.
2. Remove the Line Voltage Selection Card. Position the card
so the line voltage appears at top-left corner. Push the card
firmly into the slot.
3. Rotate the FUSE PU LL lever to its normal position. Insert
a fuse of the correct value in the holder. Close the cover
door.
I
WARNING
I
To avoid the possibility of hazardous electri-
cal shock, do not operate this instrument at
line voltages greater than 126.5 Vac with line
frequencies greater than 66 Hz (leakage cur-
rents at these line settings may exceed
3.5 mA).
Figure 2-1. Line Voltage and Fuse Selection
2-1