GE Multilin B30 Bus Differential System 2-21
2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS
2
LED TEST
Initiation: from any contact 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
USER-DEFINABLE DISPLAYS
Number of displays: 16
Lines of display: 2 × 20 alphanumeric characters
Parameters: up to 5, any Modbus register addresses
Invoking and scrolling: keypad, or any user-programmable con-
dition, including pushbuttons
CONTROL PUSHBUTTONS
Number of pushbuttons: 7
Operation: drive FlexLogic operands
USER-PROGRAMMABLE PUSHBUTTONS (OPTIONAL)
Number of pushbuttons: 12 on standard front panel
16 on enhanced horizontal front panel
6 on enhanced vertical front panel
Mode: self-reset, latched
Display message: 2 lines of 20 characters each
Drop-out timer: 0.00 to 60.00 s in steps of 0.05
Autoreset timer: 0.2 to 600.0 s in steps of 0.1
Hold timer: 0.0 to 10.0 s in steps of 0.1
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
2.4.3 MONITORING
OSCILLOGRAPHY
Maximum records: 64
Sampling rate: 64 samples per power cycle
Triggers: any element pickup, dropout, or operate;
contact input change of state; contact
output change of state; FlexLogic equa-
tion
Data: AC input channels; element state; con-
tact input state; contact output state
Data storage: in non-volatile memory
EVENT RECORDER
Capacity: 1024 events
Time-tag: to 1 microsecond
Triggers: any element pickup, dropout, or operate;
contact input change of state; contact
output change of state; self-test events
Data storage: in non-volatile memory
USER-PROGRAMMABLE FAULT REPORT
Number of elements: 2
Pre-fault trigger: any FlexLogic operand
Fault trigger: any FlexLogic operand
Recorder quantities: 32 (any FlexAnalog
TM
value)
2.4.4 METERING
RMS CURRENT: PHASE, NEUTRAL, AND GROUND
Accuracy at
0.1 to 2.0 × CT rating: ±0.25% of reading or ±0.1% of rated
(whichever is greater)
> 2.0 × CT rating: ±1.0% of reading
RMS VOLTAGE
Accuracy: ±0.5% of reading from 10 to 208 V
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)