ABB BPL0001 2RCA006836A0001 615 Micro Feeder Protector Motherboard
• Low-impedance busbar protection• Stub and T-zone protection
• High functional reliability due to two independent measurement criteria:
- stabilized differential current algorithm
- directional current comparison algorithm
• Phase-by-phase measurement
• Reduced CT performance requirements
• High through-fault stability even in case of
CT saturation
• Full solid-state busbar replica
• No switching of CT circuits
• Only one hardware version for
- 1 and 5 A rated currents
- all auxiliary supply voltages between
48 V DC and 250 V DC
- nominal frequencies of 50, 60 and
16.7 Hz
• Short tripping times independent of the
plant’s size or configuration
• Centralized layout: Installation of hardware
in one or several cubicles
• Distributed layout: Bay units distributed
and, in the case of location close to the
feeders, with short connections to CTs, isolators, circuit breakers, etc.
• Connections between bay units and central
unit by fiber-optic cables
- maximum permissible length 1200 m
- for distributed and centralized layout
• fiber-optic connections mean interferenceproof data transfer even close to HV power
cables
• Replacement of existing busbar protection
schemes can be accomplished without restrictions (centralized layout) in the case of
substation extensions e.g. by a mixture of
centralized and distributed layout
• Easily extensible

• User-friendly, PC-based human machine
interface (HMI)
• Fully numerical signal processing
• Comprehensive self-supervision
• Binary logic and timer in the bay unit
• Integrated event recording
• Integrated disturbance recording for power
system currents
• A minimum of spare parts needed due to
standardization and a low number of varying units
• Communication facilities for substation
monitoring and control systems via
IEC 61850-8-1, IEC 60870-5-103 and LON
• IEC 62439 standard redundant station bus
communication
• IEC 61850-9-2 LE process bus communication
• Cyber security to support
- User Access Management
- User Activity Logging
Options
• Breaker failure protection (also separately
operable without busbar protection)
• End fault protection
• Definite time overcurrent protection
• Breaker pole discrepancy
• Current and voltage release criteria
• Disturbance recording for power system
voltages
• Separate I0 measurement for impedancegrounded networks
• Communication with substation monitoring
and control system (IEC 61850-8-1 /
IEC 60870-5-103 / LON)
• Internal user-friendly human machine interface with display
• Redundant power supply for central units
and/or bay units
Additional
main features
REB500sys combines the well-proven numerical busbar and breaker failure protection
REB500 of ABB with Main 2 or back-up protection for line or transformer feeders. The
Main 2 / Group 1 or back-up protection is
based on the well-proven protection function
library of ABB line and transformer protection
for 50, 60 and 16.7 Hz.
Main 2 / back-up bay protection
• Definite and inverse time over- and undercurrent protection
• Directional overcurrent definite and inverse
time protection
• Inverse time earth fault overcurrent protection
• Definite time over- and undervoltage protection