6
•
Return the voltage
to
120
V.
RECONNECT TIMER
1 . Decrease the frequency until the
UNDER
FRmUDICY
LED
turns on and output relay
Kl
changes state.
2 . Slowly return the frequency to within the Under Frequency limit' setting and begin timing when the
UNDER
FRmUDICY LED
turns off; stop timing when the
Kl
relay again changes state.
3 .
The measured reconnect time delay should b e ±O.S sec o r ±l% of the calculated Total Time Delay,
whichever is greater.
TRIP TIMERS
.
NOTE : The T r i p T i m e r s c a n be m e a s u r e d u s i n g a stopwatch pe r the f o l l o w ing
p r o c e d u r e if the t i m e delay s e t t i n g s are a t l e a s t
1
s e c .
I f the
t i m e
d e l ay s a r e f a s t e r t h a n 1 s e c , a t i m e r i s r eq u i r e d that i s i n i t i a t e d by the
change in the input condition and i s stopped by the PRIDE®output contact.
Overvoltage
Trip
Timer
1 . Quickly raise the input voltage from 120
V
to about 10% higher
than
the OVervoltage setpoint.
2 . The measured time delay should be 112 cycle or ±l% of the calculated Total Time Delay, whichever
is greater.
Undervoltage
Trip Timer
1 . Return the input to 120
V
and
wait for the
Kl
relay to change state.
2 . Lower the input to about 10% below the Undervol tage setpoint.
3 .
The measured trip time delay should be 1/2 cycle or ±l% of the calculated Total Time Delay,
whichever is greater.
Over
Frequency
Trip Timer
1 . Quickly jump the frequency from 6 0
Hz
to approximately 0.5
Hz
above the OVer Frequency setpoint.
2 . The measured trip time delay should be 1/2 cycle or ±l% of the calculated Total Time Delay,
whichever is greater.
Under Frequency Trip
Timer
1.
Quickly jump the frequency from 60
Hz
to
apprOXimately 0.5
Hz
below the Under Frequency setpoint.
2 .
lhe measured time delay should be 112 cycle or ±l% of
the
calculated Total Time Delay, whichever
is greater.
3 .
Return the input frequency to 60
Hz .
-37-
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