ABB Relion REB500, Product Manual, Page: 8 / 50

Distributed busbar protection REB500 1MRK 505 352-BEN
Product version: 8.2 Issued: 2016-03-01
Revision: -
8 ABB
2. Main features
Low-impedance busbar protection
·
High functional reliability due to two independent
measurement criteria:
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stabilized differential current algorithm
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directional current comparison algorithm
·
Short tripping times independent of the plant’s size or
busbar configuration
·
Phase Segregated measurement
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Stub and T-zone protection
·
Reduced CT performance requirements
-
High through-fault stability even in case of CT
saturation
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No switching of CT circuits
Modular and flexible architecture
·
Multiple modes of installation
-
Centralized layout:
Installation of bay units and central unit in one or
several cubicles
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Distributed layout:
Bay units distributed with short connections to CTs,
isolators, circuit breakers, etc.
·
Interference-proof connections between bay units and
central unit by fiber-optic cables (max. 2000m)
·
Replacement of existing busbar protection schemes
without restrictions e.g. in case of substation extensions
·
Easily extensible
·
Only one hardware version for
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Settable 1A and 5A rated current inputs
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Nominal frequencies of 50Hz and 60Hz
·
Minimum number of spare parts needed due to
standardization and low number of varying units
Seamless substation automation integration
·
User-friendly, PC-based interface (HMI)
·
Operator integration into PCM600 for readout of
configuration, events and disturbance records.
·
Communication with substation monitoring and control
system
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via IEC 61850-8-1 Edition 1 or Edition 2
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via IEC 60870-5-103
·
Local HMI with comprehensive system information on
every unit
Supervision
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Fully numerical signal processing
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Comprehensive self-supervision
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Integrated event recording
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Integrated disturbance recording for power system
currents and voltages
·
Optional redundant power supply for central units
Cyber security
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Secure communication
·
User Access Management
·
User Activity Logging
·
Centralized account management
·
Verified robustness
Additional options
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Breaker failure protection
·
Check-zone protection
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End-fault protection
·
Definite time overcurrent protection
·
Breaker pole discrepancy protection
·
Current and voltage release criteria for busbar
protection
·
Separate I
0
measurement for impedance-grounded
networks
·
Advanced user configurable logic capability