GE L30 User Manual

2-26 L30 Line Current Differential System GE Multilin
2.5 SPECIFICATIONS 2 PRODUCT DESCRIPTION
2
BREAKER FAILURE
Mode: 1-pole, 3-pole
Current supervision: phase, neutral current
Current supv. pickup: 0.001 to 30.000 pu in steps of 0.001
Current supv. dropout: 97 to 98% of pickup
Current supv. accuracy:
0.1 to 2.0 × CT rating: ±0.75% of reading or ±2% of rated
(whichever is greater)
above 2 × CT rating: ±2.5% of reading
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 kA
2
-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
Timer accuracy (cold curve): ±100 ms or 2%, whichever is greater
Timer 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
Timer accuracy: ±3% or 10 ms, whichever is greater
2.5.2 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

GE L30 Specifications

General

Brand	GE
Model	L30
Category	Relays
Language	English