Megger SR-98, Инструкция по эксплуатации

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11
N.CLOSE
(Normally Closed):
The function of this position is to monitor normally closed dry contacts of the
device under test. The Timer starts or stops at the opening of a normally closed
dry contact.
INIT
(Initiate):
When the
TIMER START
Mode is in this position, the Timer will start when the
output, or test, is initiated using the
INIT
Button.
DE-INIT
(De-initiate):
When the contacts close on the timer start terminals, the output current is de-
initiated and the timer is started. The trip contacts are monitored by the start
terminals and the contacts associated with the back-stop are monitored with the
stop terminals, see
Overcurrent Relay
,
Run-back Test
for more details.
CURR X
(Current Actuate):
This option is associated with the Stop/Mon function. The Timer stops when the
device under test interrupts the CURRENT MAIN output
. The
CURR X
position is used when the device under test has no contacts other than those
used to pass current (such as a single-pole circuit breaker).
NOTE: Output must be maintained above threshold level or timer error will result.
MON (C)
(Monitor Continuity):
The function of this position is to monitor the change of state of normally open or
closed dry contacts of the device under test. The
TRIP
lamp will light at the
closing of a normally open dry contact. If the Horn is turned on, then the horn will
sound when the contacts close.
MON (V)
(Monitor Voltage):
The function of this position is to monitor the change of state of an AC/DC
voltage output from the device under test. The
TRIP
lamp will light at the
applying of a AC potential (60 - 300 Volts RMS) or DC potential (5 - 300 Volts)
voltage. If the Horn is turned on, then the horn will sound when the voltage is
applied. Note: CATII insulated test leads required (use PN684000 and 684001
leads).
LATCH ON/OFF
:
This mode is used in conjunction with the selected
START/STOP
options and the
START/STOP
Terminals to supervise the starting and stopping of the Timer.
START LATCH
:
The Timer
START LATCH ON
allows timing to be initiated by a Start Gate and to
be stopped only by the selected Stop Gate. When unlatched, LATCH OFF ,
allows timing to be stopped when the Start Gate is reversed (such as when
timing the closing and opening of a single contact as in measuring the trip-free
operating time of a circuit breaker).