User-Programmable Elements - GE T35 Instruction Manual

SPECIFICATIONS
BREAKER ARCING CURRENT
Principle:
Initiation:
Compensation for auxiliary relays:
Alarm threshold:
Fault duration accuracy:
Availability:
2
THERMAL OVERLOAD PROTECTION
Thermal overload curves:
Base current:
Overload (k) factor:
Trip time constant:
Reset time constant:
Minimum reset time:
Timer accuracy (cold curve):
Timer accuracy (hot curve):
TRIP BUS (TRIP WITHOUT FLEXLOGIC)
Number of elements:
Number of inputs:
Operate time:
Timer accuracy:

2.5.2 User-programmable elements

FLEXLOGIC
Programming language:
Lines of code:
Internal variables:
Supported operations:
Inputs:
Number of timers:
Pickup delay:
Dropout delay:
FLEXCURVES™
Number:
Reset points:
Operate points:
Time delay:
FLEX STATES
Number:
Programmability:
FLEXELEMENTS™
Number of elements:
Operating signal:
Operating signal mode:
Operating mode:
Comparator direction:
Pickup Level:
Hysteresis:
Delta dt:
2-20
2
accumulates breaker duty (I t) and measures fault duration
programmable per phase from any FlexLogic operand
0 to 65.535 s in steps of 0.001
2
0 to 50000 kA -cycle in steps of 1
0.25 of a power cycle
1 per CT bank with a minimum of 2
IEC 255-8 curve
0.20 to 3.00 pu in steps of 0.01
1.00 to 1.20 pu in steps of 0.05
0 to 1000 min. in steps of 1
0 to 1000 min. in steps of 1
0 to 1000 min. in steps of 1
±100 ms or 2%, whichever is greater
±500 ms or 2%, whichever is greater for I
6
16
<2 ms at 60 Hz
±3% or 10 ms, whichever is greater
Reverse Polish Notation with graphical visualization (keypad programmable)
1024
64
NOT, XOR, OR (2 to 16 inputs), AND (2 to 16 inputs), NOR (2 to 16 inputs), NAND (2 to 16 inputs),
latch (reset-dominant), edge detectors, timers
any logical variable, contact, or virtual input
32
0 to 60000 (ms, sec., min.) in steps of 1
0 to 60000 (ms, sec., min.) in steps of 1
4 (A through D)
40 (0 through 1 of pickup)
80 (1 through 20 of pickup)
0 to 65535 ms in steps of 1
up to 256 logical variables grouped under 16 Modbus addresses
any logical variable, contact, or virtual input
16
any analog actual value, or two values in differential mode
signed or absolute value
level, delta
over, under
–90.000 to 90.000 pu in steps of 0.001
0.1 to 50.0% in steps of 0.1
20 ms to 60 days
T35 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION
< 0.9 × k × I and I / (k × I ) > 1.1
p b b