GE L90 Instruction Manual page 34

2.1 INTRODUCTION
52
Monitoring
2
50DD
L90
Table 2–2: OTHER DEVICE FUNCTIONS
FUNCTION
Breaker Arcing Current (I
Breaker Control
Contact Inputs (up to 96)
Contact Outputs (up to 64)
Control Pushbuttons
CT Failure Detector
Data Logger
Digital Counters (8)
Digital Elements (48)
Direct Inputs (8 per L90 comms channel)
Disconnect Switches
DNP 3.0 or IEC 60870-5-104 protocol
Event Recorder
Fault Locator and Fault Reporting
2-2
79
CLOSE TRIP
51P(2)
50P(2) 50_2(2) 51_2(2)
50BF(2)
Data from/to remote end
(via dedicated communications)
Line Differential Relay
Figure 2–1: SINGLE LINE DIAGRAM
FUNCTION
2
t) FlexElements™ (8)
FlexLogic™ Equations
IEC 61850 Communications (optional)
L90 Channel Tests
Line Pickup
Load Encroachment
Metering: Current, Voltage, Power,
Modbus Communications
Modbus User Map
Non-Volatile Latches
Non-Volatile Selector Switch
Open Pole Detector
L90 Line Current Differential System
87L 67P(2) 78
21P 68
Metering
TM
FlexElement
50G(2) 51G(2)
Energy, Frequency, Demand,
Power Factor, 87L current,
local and remote phasors
2 PRODUCT DESCRIPTION
50N(2) 51N(2) 67N/Q 32N(2) 21G
Transducer
inputs
59P
27P(2)
59N
59X 27X
25(2)
FUNCTION
Oscillography
Pilot Scheme (POTT)
Setting Groups (6)
Stub Bus
Synchrophasors
Time Synchronization over SNTP
Transducer Inputs/Outputs
User Definable Displays
User Programmable LEDs
User Programmable Pushbuttons
User Programmable Self-Tests
Virtual Inputs (64)
Virtual Outputs (96)
VT Fuse Failure
GE Multilin
831706AT.CDR