ABB Relion REB500 Product Manual page 8

Distributed busbar protection REB500
Product version: 8.2
2. Main features
Low-impedance busbar protection
· High functional reliability due to two independent
measurement criteria:
- stabilized differential current algorithm
- directional current comparison algorithm
· Short tripping times independent of the plant's size or
busbar configuration
· Phase Segregated measurement
· Stub and T-zone protection
· Reduced CT performance requirements
- High through-fault stability even in case of CT
saturation
- 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
- 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
- Settable 1A and 5A rated current inputs
- 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
- via IEC 61850-8-1 Edition 1 or Edition 2
- via IEC 60870-5-103
· Local HMI with comprehensive system information on
every unit
Supervision
· Fully numerical signal processing
· Comprehensive self-supervision
· Integrated event recording
· Integrated disturbance recording for power system
currents and voltages
· Optional redundant power supply for central units
8
Cyber security
· Secure communication
· User Access Management
· User Activity Logging
· Centralized account management
· Verified robustness
Additional options
· Breaker failure protection
· Check-zone protection
· End-fault protection
· Definite time overcurrent protection
· Breaker pole discrepancy protection
· Current and voltage release criteria for busbar
protection
· Separate I
measurement for impedance-grounded
0
networks
· Advanced user configurable logic capability
1MRK 505 352-BEN
Issued: 2016-03-01
Revision: -
ABB