31
Increase the DC voltage output by rotating the Control Knob until proper logic voltage is
applied. If the relay is AC voltage controlled/restrained, see
VOLTAGE RELAY Test
for typical tests on the AC voltage control/restraint element.
Pickup Test:
1.
AC AMPERES
should already be highlighted.
2. With
MODE SELECT
set to
MAINT.
(MAINTAIN), press the
INIT
button.
3.
Rotate Control Knob and increase current until the
TRIP
LED turns
ON
(and the
horn sounds, if the horn is set on). Reduce current until
TRIP
LED blinks.
4.
Read and record the Pick-up current. Return the current to zero.
Timing Test:
Preset Fault Current:
5. Pressing
the
MODE SELECT
button, change from
MAINT
(Maintain) to
MOM.
(Momentary)
6. Press
the
INIT
Button. The output current should turn on for a short pulse
duration. If the current was returned to zero in step 4, the current displayed
should be approximately zero.
7.
Rotate the Control Knob and press the
INIT
Button. A new current value is
displayed. Continue until the desired current value is achieved.
8. Pressing
the
MODE SELECT
button twice to change from
MOM.
(Momentary) to
CA.
(Current Actuate) to
MAINT
(Maintain). The current value selected in
Momentary mode will be remembered.
9. Press
the
TIMER SETUP
Button. The following screen should be displayed.
See
TIMER SETUP
Screen description for desired setting changes. Settings for a
Summary of Contents for SR-98
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