GE Multilin
L30 Line Current Differential System
2-19
2 PRODUCT DESCRIPTION
2.4 SPECIFICATIONS
2
BREAKER ARCING CURRENT
Principle:
accumulates breaker duty (I
2
t) and mea-
sures fault duration
Initiation:
programmable per phase from any Flex-
Logic operand
Compensation for auxiliary relays: 0 to 65.535 s in steps of 0.001
Alarm threshold:
0 to 50000 kA2-cycle in steps of 1
Fault duration accuracy: 0.25 of a power cycle
Availability:
1 per CT bank with a minimum of 2
SYNCHROCHECK
Max voltage difference: 0 to 400000 V in steps of 1
Max angle difference:
0 to 100
°
in steps of 1
Max freq. difference:
0.00 to 2.00 Hz in steps of 0.01
Hysteresis for max. freq. diff.: 0.00 to 0.10 Hz in steps of 0.01
Dead source function:
None, LV1 & DV2, DV1 & LV2, DV1 or
DV2, DV1 xor DV2, DV1 & DV2
(L = Live, D = Dead)
AUTORECLOSURE
Single breaker applications, 3-pole tripping schemes
Up to 4 reclose attempts before lockout
Independent dead time setting before each shot
Possibility of changing protection settings after each shot with
FlexLogic
THERMAL OVERLOAD PROTECTION
Thermal overload curves: IEC 255-8 curve
Base current:
0.20 to 3.00 pu in steps of 0.01
Overload (
k
) factor:
1.00 to 1.20 pu in steps of 0.05
Trip time constant:
0 to 1000 min. in steps of 1
Reset time constant:
0 to 1000 min. in steps of 1
Minimum reset time:
0 to 1000 min. in steps of 1
Timing accuracy (cold curve): ±100 ms or 2%, whichever is
greater
Timing accuracy (hot curve): ±500 ms or 2%, whichever is greater
for
I
p
< 0.9 ×
k
×
I
b
and I / (
k
×
I
b
) > 1.1
TRIP BUS (TRIP WITHOUT FLEXLOGIC)
Number of elements:
6
Number of inputs:
16
Operate time:
<2 ms at 60 Hz
Time accuracy:
±3% or 10 ms, whichever is greater
2.4.2 USER-PROGRAMMABLE ELEMENTS
FLEXLOGIC
Programming language: Reverse Polish Notation with graphical
visualization (keypad programmable)
Lines of code:
512
Internal variables:
64
Supported operations:
NOT, XOR, OR (2 to 16 inputs), AND (2
to 16 inputs), NOR (2 to 16 inputs),
NAND (2 to 16 inputs), latch (reset-domi-
nant), edge detectors, timers
Inputs:
any logical variable, contact, or virtual
input
Number of timers:
32
Pickup delay:
0 to 60000 (ms, sec., min.) in steps of 1
Dropout delay:
0 to 60000 (ms, sec., min.) in steps of 1
FLEXCURVES™
Number:
4 (A through D)
Reset points:
40 (0 through 1 of pickup)
Operate points:
80 (1 through 20 of pickup)
Time delay:
0 to 65535 ms in steps of 1
FLEX STATES
Number:
up to 256 logical variables grouped
under 16 Modbus addresses
Programmability:
any logical variable, contact, or virtual
input
FLEXELEMENTS™
Number of elements:
8
Operating signal:
any analog actual value, or two values in
differential mode
Operating signal mode: signed or absolute value
Operating mode:
level, delta
Comparator direction:
over, under
Pickup Level:
–90.000 to 90.000 pu in steps of 0.001
Hysteresis:
0.1 to 50.0% in steps of 0.1
Delta dt:
20 ms to 60 days
Pickup & 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
Number:
48 plus trip and alarm
Programmability:
from any logical variable, contact, or vir-
tual input
Reset mode:
self-reset or latched
LED TEST
Initiation:
from any digital input or user-program-
mable 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
Summary of Contents for L30
Page 10: ...x L30 Line Current Differential System GE Multilin TABLE OF CONTENTS ...
Page 30: ...1 20 L30 Line Current Differential System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 370: ...5 244 L30 Line Current Differential System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 464: ...A 10 L30 Line Current Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 600: ...C 30 L30 Line Current Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 610: ...D 10 L30 Line Current Differential System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 622: ...E 12 L30 Line Current Differential System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...
Page 634: ...F 12 L30 Line Current Differential System GE Multilin F 3 WARRANTY APPENDIX F F ...
Page 644: ...x L30 Line Current Differential System GE Multilin INDEX ...
