4. OPERATING GUIDE - DISCHARGING
G.
VIEW AND SET CUTOFF
VOLTAGE
a. Press and hold the Voltage Cutoff View
button. The set cutoff voltage is shown on
the voltmeter display.
b. Use a 1/16 inch (2 mm) slot blade
precision type screw driver set the
Voltage Cutoff Adjust to the desired level.
NOTE: Actual cutoff voltages are slightly
lower than the set nominal voltage in order to
give the battery an "accept advantage" and
allow the operator to observe a marginal battery
and decide its acceptance or
rejection. The actual cutoff value also
depends on how fast the battery voltage is
changing. Of course, the higher the voltage at
acceptance, the better the battery.
4.6
SETTING DISCHARGE CURRENT
The discharge current in amperes is normally set equal to, or 80% of, the battery
nominal 1-hour capacity rating (please refer to the battery manufacturer's
maintenance manual). For example, a SLAB battery with a 30 ampere-hour 1-hour
capacity rating would be tested with the discharge current set to 24 amperes.
Refer to your battery manufacturer’s maintenance manual for the
recommended discharge times.
Before setting the discharge current the CA-1550 must have been connected to the
battery (see section 4.5) and the AC power switch must have been turned on.
H.
SET DISCHARGE CURRENT
Slowly turn the multi-turn Ampere Adjust
knob clockwise to the desired discharge
current. The ammeter displays the current as it
is being adjusted.
NOTE: The current is proceeded with a
negative sign indicating that current is being
drawn from the battery.
CA-1550 CHARGER / ANALYZER - OPERATING MANUAL LI-4159-CML Rev A
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