GE b30 User Manual

2-2 B30 Bus Differential System GE Multilin
2.1 INTRODUCTION 2 PRODUCT DESCRIPTION
2
Figure 2–1: SINGLE LINE DIAGRAM
Table 2–1: ANSI DEVICE NUMBERS AND FUNCTIONS
DEVICE
NUMBER
FUNCTION DEVICE
NUMBER
FUNCTION
27P Phase undervoltage 50/87 Unrestrained bus differential
49 Thermal overload protection 51G Ground time overcurrent
50BF Breaker failure 51N Neutral time overcurrent
50G Ground instantaneous overcurrent 51P Phase time overcurrent
50N Neutral instantaneous overcurrent 59N Neutral overvoltage
50P Phase instantaneous overcurrent 59X Auxiliary overvoltage
50/74 CT trouble 87B Restrained bus differential
836719AG.CDR
51P
50N
Breaker position and trip
Metering: current,
voltage, and frequency
51N
Zone 1
Zone 2
B30 Bus Differential Protection System
87B
87B
50/87
50/87
50/74
50/74
50G
51G
51P
50N
51N
50G
51G
50BF
50BF
51P
50N
51N
50G
51G
50BF
51P
50N
51N
50G
51G
50BF
50P 2750P 50P 50P27
49
50_2
51_2
59N
59X

GE b30 Specifications

General

Model	b30
Manufacturer	GE
Coil Voltage	N/A (Solid State Relay)
Coil Power	N/A (Solid State Relay)
Mechanical Life	N/A (Solid State Relay)
Electrical Life	N/A (Solid State Relay)