BECKWITH ELECTRIC Syncrocloser M-3410A Manual - Halaman 4
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M‑5625 Digital Synchronizing System
SYNCHRONIZING SYSTEM FUNCTIONS (cont.)
Device
Number
Function
Phase Overvoltage
Pickup #1, #2
59
Time Delay #1, #2
* Of nominal voltage.
** When DFT is selected, the time delay accuracy is 2 cycles. When RMS magnitude is selected, an
additional time delay from 0 to +20 cycles may occur.
VT Fuse‑Loss Detection
A VT fuse-loss condition is detected by using the positive and negative sequence components
60
of the voltages and currents. VT fuse-loss output can be initiated from internally generated
FL
logic or from input contacts.
Time Delay
Reconnect Enable Time Delay
Time Delay
79
Reconnect timer starts when all outputs designated as trip outputs reset.
Over/UnderFrequency
Pickup #1, #2, #3, #4
81
Time Delay #1,#2, #3, #4
*This range applies to 50 Hz nominal frequency models.
The pickup accuracy applies to 60 Hz models at a range of 57 to 63 Hz, and to 50 Hz models at a range of 47
to 53 Hz. The accuracy is 0.15 Hz for a range of 52 to 57 Hz, and 63 to 67 Hz (for 60 Hz nominal) and 42 to
47 Hz and 53 to 57 Hz (for 50 Hz nominal).
Controls
Upper Voltage Limit
(either input)
Lower Voltage Limit
(either input)
Delta Voltage Limit
Delta Frequency Limit
(1) Multiple times of this range (2 times to 10 times) are available.
(2) An additional range of 0.005 to 0.05 Hz is available.
Setpoint
Ranges
100 to 150%*
1 to 8160 Cycles
1 to 8160 Cycles
2 to 65,500 Cycles
50.00 to 67.00 Hz
(40.00 to 57.00 Hz*)
2 to 65,500 Cycles
110 to 140 V ac
90 to 120 V ac
1 to 5 V ac
(1)
0.05 to 0.5 Hz
(2)
–4–
Increment
Accuracy
0.1%
0.5 V or 0.5%
1 Cycle
2 Cycles**
1 Cycle
2 Cycles
1 Cycle
2 Cycles
0.01 Hz
0.03 Hz
1 Cycle
2 Cycles or 0.01%
—
±1.5% of full scale
—
±1.5% of full scale
—
±5% of full scale
—
±3% of full scale