Megger SR-98, Инструкция по эксплуатации

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43
Timing Test:
Preset Fault Current:
1.
Repeat steps 1 through 4 for the
Power Directional Pick up Test
.
2. Pressing
the
MODE SELECT
button, change from
MAINT
(Maintain) to
MOM.
(Momentary)
3. Press
the
INIT
Button. The output current should turn on for a short pulse
duration.
4.
Rotate the Control Knob and press the
INIT
Button. A new current value is
displayed. Continue until the desired current value is achieved (normally a
multiple of the pick up value). Note the phase angle, it should be in the trip
direction.
5. 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.
6. Press
the
TIMER SETUP
Button. The following screen should be displayed.
See
TIMER SETUP
Screen description for desired setting changes. Settings for a
typical normally open contact timing test are as follows,
7.
Select Start Option to
INITIATE
.
8.
Select Stop Option to
N. OPEN
(Normally Open).
9.
Select Start and Stop Latch
ON
. Press
PREV SCREEN
.
10. Press
the
INIT
Button. The current turns ON at the value set in Momentary
mode. The timer starts. Relay trips. Output turns OFF. Timer Stops.