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Functionality; Communications - GE UR Series Instruction Manual

Line differential relay.
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2 PRODUCT DESCRIPTION
MONITORING:
Oscillography of current, voltage, FlexLogic™ operands, and digital signals (1 × 128 cycles to 31 × 8 cycles config-
urable)
Events recorder - 1024 events
Fault locator
METERING:
Actual 87L remote phasors, differential current and channel delay at all line terminals of line current differential protec-
tion
Line current, voltage, real power, reactive power, apparent power, power factor, and frequency

COMMUNICATIONS:

RS232 front port - 19.2 kbps
1 or 2 RS485 rear ports - up to 115 kbps
10BaseF Ethernet port supporting MMS/UCA2.0 protocol
The following SINGLE LINE DIAGRAM illustrates relay functionality using ANSI (American National Standards Institute)
device numbers
52
Monitoring
50DD
50P(2)
Data From/To Remote End
(via Dedicated Communications)
L90
Line Differential Relay
GE Power Management
79
CLOSE
TRIP
50_2(2)
51P(2)
51_2(2)
50BF(2)
87L
Figure 2–1: SINGLE LINE DIAGRAM
L90 Line Differential Relay
21P
67P(2)
68
78
Metering
TM
FlexElement
50G(2)
51G(2)
2.1 INTRODUCTION

2.1.3 FUNCTIONALITY

3V_0
50N(2)
51N(2)
67N/G
21G
Transducer
Inputs
59P
27P(2)
59N
59X
27X
25(2)
831706AS.CDR
2-3
2

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This manual is also suitable for:

L90

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