Schweitzer Engineering SEL-351P, Быстрый старт

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46 SEL-351P Quick-Start Installation and User's Guide (Portuguese)
Table 9: Seconds-to-Cycles Conversion (60 Hz)
Seconds Cycles
(50 Hz) (60 Hz)
Seconds Cycles
(50 Hz) (60 Hz)
0.3 15 18 15 750 900
0.5 25 30 20 1000 1200
1 50 60 30 1500 1800
2 100 120 45 2250 2700
3 150 180 60 3000 3600
5 250 300 90 4500 5400
7 350 420 120 6000 7200
10 500 600 180 9000 10800
for 50 Hz systems: _____ seconds x 50 cycles/second = _____ cycles
_____ minutes x 3000 cycles/minute = _____ cycles
for 60 Hz systems: _____ seconds x 60 cycles/second = _____ cycles
_____ minutes x 3600 cycles/minute = _____ cycles
No. Setting Default Range (see Note below) Incr.
18 Reclose interval 1 300.00 0-999999.00 cycles 0.25 cyc.
19 Reclose interval 2 600.00 0-999999.00 cycles 0.25 cyc.
20 Reclose interval 3 600.00 0-999999.00 cycles 0.25 cyc.
21 Reclose interval 4 0.00 0-999999.00 cycles 0.25 cyc.
The Reclose interval settings (1 through 4) are each successively and individually timed. Reclose interval
timing cannot proceed until the following two conditions are met:
•
The trip condition has gone away.
•
The recloser has opened.
At the end of a reclose interval, an auto reclose attempt is made.
The number of available Reclose interval settings corresponds to the highest set Operations to lockout (No.
15, 16, or 17) setting.
For example, if the highest set Operations to lockout setting is Operations to lockout - phase (No. 15) = 4,
then settings Reclose interval 1 , Reclose interval 2 , and Reclose interval 3 are available (three reclose
attempts). Because it is not available, Reclose interval 4 is hidden and set to zero (0).
The number of reclosing attempts (i.e., available Reclose interval settings) is always one less than the number
of trip operations (e.g., 4 “trips” - 1 = 3 “reclosures”).
•
All the Reclose interval settings are hidden and set to zero (0) if none of the Operations to lockout (No.
15, 16, or 17) settings are set greater than 1 (reclosing is disabled; 1 “trip” - 1 = 0 “reclosures”).
•
If a Reclose interval setting is set to zero (0), the corresponding auto reclose attempt and any following
auto reclose attempts are aborted.
•
Note: Reclose intervals should not be set less than 30 cycles, otherwise the control will got to lockout
prematurely.