32
typical normally open contact timing test are as follows,
10.
Select Start Option to
INITIATE
.
11.
Select Stop Option to
N. OPEN
(Normally Open).
12.
Select Start and Stop Latch
ON
.
13. Press
PREV SCREEN
.
14. 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. Trip LED
turns ON. The horn beeps (if the horn was turned on). Record trip time.
Run Back Test:
This test is normally conducted on relays, which have two sets of contacts, one
associated with the trip contacts and the other associated with the back stop.
15.
Connect Trip contacts to Timer Start Gate.
Connect BackStop contacts to Timer Stop Gate.
16. Press
the
TIMER SETUP
Button. Change Timer Start Option to
DEINIT
(deinitiate). Change Timer Stop Option to
N. OPEN
.
17.
With the previous test current still set from the Timing Test, press the
INIT
Button.
18.
The output current turns ON. When the relay trips, the output turns OFF and
starts the timer. When the backstop contacts close, the timer stops. Read and
record run-back time.
Summary of Contents for SR-98
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