I
I '
NOTE: Depending on the position
of
the OUTPUT SELECTOR Switch, the
current may be increased by either
clockwise or counter clockwise rotation
of
the
VERNIER CONTROL (refer to chart
of
OUTPUT RANGES). For example, if the
desired test current is
7500 amperes, the proper procedure would be to start with
the
OUTPUT SELECTOR Switch
in
position 1 and increase the VERNIER
CONTROL
from "0" toward "100". However,
if
the impedance
of
the device is such
that you cannot get
7500 amperes at "100" on the VERNIER CONTROL with the
TAP
Selector on position #1, switch the OUTPUT SELECTOR Switch to position
number
2.
On TAP Position #2 the
red
scale
is
used to increase the output current.
Rotate the
VERNIER CONTROL counterclockwise toward "0". If at full rotation
of
the VERNIER CONTROL, the desired current
is
not obtained, turn the OUTPUT
SELECTOR Switch
to the next higher position and repeat the procedure until the
desired test current is reached.
Since the PULSE OUTPUT MODE
is
selected, the
output will
only stay energized for programmed number
of
cycles (Default
is
5
cycles. See PULSE DURATION MENU). The ammeter display will hold the reading
of
the amperage set.
If
at the last position the desired test current
is
not reached,
connect the output
of
the test set
in
series (See SELECTION OF OUTPUT
CONNECTION, Section IV,
2,
A). Switch the Ammeter PARALLEL/SERIES Switch
to the SERIES position; return the OUTPUT SELECTOR Switch to position 1 and
repeat the above procedure
until the desired current is achieved.
9.
Select the MAINTAINED OUTPUT
MODE.
10.Select the CONTINUOUS AMMETER MODE.
11.1nitiate unit by pressing START button. The timer will stop and output will
automatically de-energize when the circuit breaker operates.
NOTE: Check the ammeter reading during the test for any change in output
setting. Minor adjustments may be made with the output
control while the test is in
progress.
12.Record the
results and compare them to the manufacture's specifications.
24
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