Protection Functions
Overcurrent, directional overcurrent, ground-fault, displacement voltage, intermittent ground fault, high-impedance restricted ground fault, motor and overload protection, temperature monitoring, voltage/frequency protection, rate-of-frequency-change, power protection, breaker failure, negative-sequence, phase-sequence monitoring, synchro-check, fault locator, lockout, auto-reclosure
Control & Logic:
Control of circuit-breakers and isolators, visualization of switch positions, operation via keyboard, binary inputs, DIGSI 4 or SCADA, user-defined logic (CFC)
Monitoring:
Measurement of V, I, f, energy metering (Wp, Wq), breaker wear, trip circuit, fuse failure, oscillographic fault records (8), motor statistics
Communication:
IEC 60870-5-103, IEC 61850, Modbus RTU, DNP3, RSTP Ethernet, USB for DIGSI 4, IRIG B & DCF77 synchronization
Hardware:
4 CT, 4 VT, 16/22/36 binary inputs, 7/10/23 outputs, spring terminals, graphic or 8-line display
Languages Supported: English, Spanish, Russian, Polish, Turkish
Key Benefits:
Unified protection, control, measurement, and automation; reliable DIGSI 4 configuration; proven performance worldwide; industry standard in digital protection
Busbar Protection Functions:
Busbar differential protection
Selective zone tripping
Ultra-fast tripping time (<15 ms)
High stability against external faults (saturation-free ≤2 ms)
Phase-segregated measurement
Integrated check zone
Up to 48 bays and 12 busbar sections configurable
Bay-selective intertripping
Breaker Failure Protection Functions:
Single-phase breaker failure protection (with/without current)
5 operation modes per bay
Separate parameterization for busbar/line faults
Two-stage operation with repeat/trip options
Intertrip via teleprotection
Low-current mode using breaker auxiliary contacts
Additional Functions:
End-fault protection with intertrip or bus zone trip
Backup overcurrent protection (definite or inverse time) per bay
Independent breaker failure protection per bay
Features:
Centralized or distributed installation
Modular and easily expandable
Integrated commissioning aids
User-friendly configuration via DIGSI 4
Universal hardware design
Communication Interfaces:
Fiber Optic Interface: IEC 60870-5-103
Electrical Interface: IEC 61850 (EN100 module, firmware V4.6)
