SEL-487B Data Sheet Schweitzer Engineering Laboratories, Inc.
2
➤
The relay records a wide range of system events with sampling rates as fast as 8 kHz, and as much as
24 seconds of data per COMTRADE compliant event report.
➤ Parallel Redundancy Protocol (PRP) provides seamless recovery from any single Ethernet network
failure, in accordance with IEC 62439-3. The Ethernet network and all traffic are fully duplicated with
both copies operating in parallel.
➤ IEEE 1588, Precision Time Protocol version 2 provides high-accuracy timing over an Ethernet net-
work.
➤ Time-domain link (TiDL) technology allows for remote data acquisition through use of the SEL-2240
Axion. The Axion provides remote analog and digital data over an IEC 61158 EtherCAT TiDL net-
work. This technology provides very low and deterministic latency over a fiber point-to-point architec-
ture. The SEL-487B-1 Relay can receive fiber links from as many as eight Axion remote data
acquisition nodes.
Functional Overview
Figure 1 SEL-487B Relay Basic Functions in a Double-Bus Application
ANSI NUMBERS/ACRONYMS AND FUNCTIONS
16 SEC Access Security (Serial, Ethernet)
27/59 Over- and Undervoltage
50 Overcurrent
50BF Breaker Failure Overcurrent
51 Time-Overcurrent
85 RIO SEL M
IRRORED
B
ITS
Communications
87 Current Differential
DFR Event Reports
HMI Operator Interface
LGC Expanded
SEL
OGIC
Control Equations
MET High-Accuracy Metering
RTU Remote Terminal Unit
SER Sequential Events Recorder
ADDITIONAL FUNCTIONS
SBM Station Battery Monitor
1
Copper or Fiber Optic * Optional Feature
ADDITIONAL FEATURES
Open CT Detection
Three Independent Check Zones
Disconnect Status and Monitoring Logic for 60 Disconnects
Single-Relay Application: 2 Three-Phase Zones for as many as 7 Terminals
Two-Relay Application: 3 Three-Phase Zones for as many as 10 Terminals
Three-Relay Application: 6 Single-Phase Zones for as many as 21 Terminals
4
EIA -232
2
Ethernet
1
*
16
S
E
C
27
59
85
RIO
DFR
HMI
LGC
MET SBMRTU SER
1
IRIG-B
SEL-487B
52- 1
3
52- 2
3 3 3
52- 3
3
52-4
33
52-5
52-6
3 3
50 50 50 50 50 50 50
51 51 51 51 51 51 51
50BF 50BF 50BF 50BF 50BF 50BF 50BF
8787
Zone 1
Zone 1
Zone 2
Zone 2
PT898989
8989
8989
Tie Breaker
TiDL Time-Domain Link Remote Data Acquisition
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