User-Programmable Elements - GE C70 Instruction Manual

2.4 SPECIFICATIONS
BREAKER FAILURE
Mode:
Current supervision:
Current supv. pickup:
Current supv. dropout:
Current supv. accuracy:
0.1 to 2.0 × CT rating: ±0.75% of reading or ±2% of rated
2
above 2 × CT rating:
BREAKER FLASHOVER
Operating quantity:
Pickup level voltage:
Dropout level voltage:
Pickup level current:
Dropout level current:
Level accuracy:
Pickup delay:
Timer accuracy:
Operate time:
FLEXLOGIC
Programming language: Reverse Polish Notation with graphical
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:
2-20
1-pole, 3-pole
phase, neutral current
0.001 to 30.000 pu in steps of 0.001
97 to 98% of pickup
(whichever is greater)
±2.5% of reading
phase current, voltage and voltage differ-
ence
0 to 1.500 pu in steps of 0.001
97 to 98% of pickup
0 to 1.500 pu in steps of 0.001
97 to 98% of pickup
±0.5% or ±0.1% of rated, whichever is
greater
0 to 65.535 s in steps of 0.001
±3% of operate time or ±42 ms, which-
ever is greater
<42 ms at 1.10 × pickup at 60 Hz
visualization (keypad programmable)
512
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-domi-
nant), 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
C70 Capacitor Bank Protection and Control System
2 PRODUCT DESCRIPTION
BREAKER RESTRIKE
Principle: detection of high-frequency overcurrent
condition ¼ cycle after breaker opens
Availability: one per CT/VT module (not including 8Z
modules)
Pickup level: 0.1 to 2.00 pu in steps of 0.01
Reset delay: 0.000 to 65.535 s in steps of 0.001
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 < 0.9 × k × I
p
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

2.4.2 USER-PROGRAMMABLE ELEMENTS

FLEXELEMENTS™
Number of elements: 16
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
and I / (k × I ) > 1.1
b b
GE Multilin