Monitoring - GE D30 Instruction Manual

2.4 SPECIFICATIONS
USER-PROGRAMMABLE PUSHBUTTONS (OPTIONAL)
Number of pushbuttons: 12 on standard front panel
Mode:
Display message:
Drop-out timer:
2
Autoreset timer:
Hold timer:
OSCILLOGRAPHY
Maximum records:
Sampling rate:
Triggers:
Data:
Data storage:
EVENT RECORDER
Capacity:
Time-tag:
Triggers:
Data storage:
RMS CURRENT: PHASE, NEUTRAL, AND GROUND
Accuracy at
0.1 to 2.0 × CT rating: ±0.25% of reading or ±0.1% of rated
> 2.0 × CT rating:
RMS VOLTAGE
Accuracy:
REAL POWER (WATTS)
Accuracy at 0.1 to 1.5 x
CT rating and 0.8 to
1.2 x VT rating:
2-22
16 on enhanced horizontal front panel
6 on enhanced vertical front panel
self-reset, latched
2 lines of 20 characters each
0.00 to 60.00 s in steps of 0.05
0.2 to 600.0 s in steps of 0.1
0.0 to 10.0 s in steps of 0.1
64
64 samples per power cycle
any element pickup, dropout, or operate;
contact input change of state; contact
output change of state; FlexLogic equa-
tion
AC input channels; element state; con-
tact input state; contact output state
in non-volatile memory
1024 events
to 1 microsecond
any element pickup, dropout, or operate;
contact input change of state; contact
output change of state; self-test events
in non-volatile memory
(whichever is greater)
±1.0% of reading
±0.5% of reading from 10 to 208 V
±1.0% of reading at –1.0 ≤ PF< –0.8 and
0.8 < PF ≤ 10
D30 Line Distance Protection System
2 PRODUCT DESCRIPTION
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 syn-
chronize to a 3-bit control input or synch/
restore mode
DIGITAL ELEMENTS
Number of elements: 48
Operating signal: any FlexLogic operand
Pickup delay: 0.000 to 999999.999 s in steps of 0.001
Dropout delay: 0.000 to 999999.999 s in steps of 0.001
Timing accuracy: ±3% or ±4 ms, whichever is greater
FAULT LOCATOR
Method: single-ended
Voltage source: wye-connected VTs, delta-connected
VTs and neutral voltage, delta-connected
VTs and zero-sequence current (approxi-
mation)
Maximum accuracy if: fault resistance is zero or fault currents
from all line terminals are in phase
Relay accuracy: ±1.5% (V > 10 V, I > 0.1 pu)
Worst-case accuracy:
VT + user data
%error
CT + user data
%error
Z + user data
Line%error
METHOD + see chapter 8
%error
RELAY ACCURACY + (1.5%)
%error
REACTIVE POWER (VARS)
Accuracy at 0.1 to 1.5 x
CT rating and 0.8 to
±1.0% of reading at –0.2 ≤ PF ≤ 0.2
1.2 x VT rating:
APPARENT POWER (VA)
Accuracy at 0.1 to 1.5 x
CT rating and 0.8 to
1.2 x VT rating: ±1.0% of reading
FREQUENCY
Accuracy at
V = 0.8 to 1.2 pu: ±0.001 Hz (when voltage signal is used
for frequency measurement)
I = 0.1 to 0.25 pu: ±0.005 Hz
I > 0.25 pu: ±0.02 Hz (when current signal is used for
frequency measurement)

2.4.3 MONITORING

2.4.4 METERING
GE Multilin