38
VOLTAGE RELAY TIMING TEST
1.
With the relay properly connected to the test set (see connections above) press
the
AC AUX
Button to turn the AC output voltage on.
2.
The “fault” voltage is set first. Increase the “fault” voltage to the relay by rotating
the Control Knob. Set the fault voltage by pressing the
SET FAULT VOLTS
Button.
3.
Increase or decrease the
AC AUX
output voltage by rotating the Control Knob to
the “normal” operating voltage of the relay.
4. Press
the
TIMER SETUP
Button. The following screen should appear.
See
TIMER SETUP
Screen description for desired setting changes. Settings for a
typical normally open contact timing test are as follows,
5.
Select Start Option to
INITIATE
.
6.
Select Stop Option to
N. OPEN
(Normally Open).
7.
Select Start and Stop Latch
ON
. Press
PREV SCREEN
.
8. Press
the
INIT
Button. The “Normal” output voltage is changed to the “Fault”
voltage and the timer is started. When the relay trips, the output turns OFF and
the Timer Stops. Trip LED turns ON. Record trip time.
9.
To repeat test, press
Timer Reset
, turn on the
AC AUX
and press
INIT
.
If the relay has a target and seal-in coil, see
OVERCURRENT RELAY
,
DC TARGET
AND SEAL IN Test
for procedure.
Summary of Contents for SR-98
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