2-20
N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL
SPECIFICATIONS
CHAPTER 2: PRODUCT DESCRIPTION
2
Pickup and dropout delay:
0.000 to 65.535 s in steps of 0.001
NON-VOLATILE LATCHES
Type:
set-dominant or reset-dominant
Number:
16 (individually programmed)
Output:
stored in non-volatile memory
Execution sequence:
as input prior to protection, control, and FlexLogic
USER-PROGRAMMABLE LEDs (Enhanced and standard front panels)
Number:
48 plus trip and alarm
Programmability:
from any logical variable, contact, or virtual input
Reset mode:
self-reset or latched
LED TEST
Initiation:
from any contact input or user-programmable condition
Number of tests:
3, interruptible at any time
Duration of full test:
approximately 3 minutes
Test sequence 1:
all LEDs on
Test sequence 2:
all LEDs off, one LED at a time on for 1 s
Test sequence 3:
all LEDs on, one LED at a time off for 1 s
USER-DEFINABLE DISPLAYS (Enhanced and standard front panels)
Number of displays:
16
Lines of display:
2
×
20 alphanumeric characters
Parameters:
up to 5, any Modbus register addresses
Invoking and scrolling:
keypad, or any user-programmable condition, including pushbuttons
CONTROL PUSHBUTTONS (Enhanced and standard front panels)
Number of pushbuttons:
7
Operation:
drive FlexLogic operands
USER-PROGRAMMABLE PUSHBUTTONS (Optional)
Number of pushbuttons:
12 on standard front panel
16 on enhanced horizontal front panel
6 on enhanced vertical front panel
16 on graphical front panel (8 physical pushbuttons, 8 graphical interface pushbuttons)
Mode:
self-reset, latched
Display message:
2 lines of 20 characters each
Drop-out timer:
0.00 to 60.00 s in steps of 0.05
Autoreset timer:
0.2 to 600.0 s in steps of 0.1
Hold timer:
0.0 to 10.0 s in steps of 0.1
SELECTOR SWITCH
Number of elements:
2
Upper position limit:
1 to 7 in steps of 1
Selecting mode:
time-out or acknowledge
Time-out timer:
3.0 to 60.0 s in steps of 0.1
Control inputs:
step-up and 3-bit
Power-up mode:
restore from non-volatile memory or synchronize to a 3-bit control input or synch/restore mode
DIGITIZER
Input signal:
any FlexAnalog parameter
Independent elements:
1 per CT bank, to a maximum of 5
Independent elements:
5
Response time:
< 8 ms at 60 Hz, < 10 ms at 50 Hz
Upper / lower limit for input signal:
0.050 to 90 pu in steps of 0.001
Resolution:
8 bits / full-scale
Maximum error:
±0.6% of full-scale