Centralized busbar protection with:
20 three-phase current measuring points
4 three-phase voltage measuring points
26 bays (feeders, couplers, bus-section disconnections)
4 bus zones with measurement
4 couplers with 1 or 2 current transformers
2 auxiliary busbars without measurement
Phase-selective measurement and display
Selective tripping of faulty bus zones
Disconnector-independent check zone
Shortest tripping times (<7 ms)
High stability during external faults, including transformer saturation
Freely adjustable operate curve and additional high-sensitivity curves
Fast recognition of internal and external faults (2 ms)
Compatible with closed iron core or linearized CTs
Adaptable CT ratios per parameterization
Three measurement methods for minimum tripping time and max stability
Circuit-breaker failure protection integrated
Extensive CT monitoring, measured value processing, and trip circuit supervision
Optional features: 1/3-pole or 3-pole CB failure protection, end-fault protection, external trip signals, phase/ground overcurrent protection, cross-stabilization, bus coupler differential protection
Integrated DIGSI 5 and modular hardware/software
