Products

KOMBISAVE: Overview of functions

Protective functions IEC 61850 ANSI KOMBISAVE
Nondirectional overcurrent, two-level PTOC 50/51 RN
Switch failure protection RBRF 50BF RN
Automatic reclosure RREC 79 RN
Thermal overload: One- or two-body model of thermal overload
(e.g. for motors, cables, dry and oil transformers)
PTTR 49 & 49II RN
Minimal current PTUC 37 RN
Inrush protection PHAR 68 RN
Switch-onto-fault protection PIOC 50 RN
Nondirectional ground current, two-level PTOC 50N/51N RN
Autoreclosure lock PMRI 66/86 RN
Locked rotor protection PZSU 14 RN
Load-jam protection PTOC 51M RN
Phase balance PTOC 46 RN
Start-up time monitoring PMSS 46 RN
Busbar protection according to H2 PSCH 85 RD
Zero current, two levels, U0 PTOV 59G RD
Basic directional ground short circuit protection
for low-resistance and rigid grids
PTOC 67N RD
Bidirectional ground fault
for isolated, compensated grids (watt and P/Q)
PTEF/PSDE 32N RD
Bidirectional intermittent ground fault
for isolated, compensated grids (energy)
PTEF/PSDE 67NIEF RD
Bidirectional short circuit protection: two-level PTOC 67 RD
Under/overvoltage protection depending on the two-level PTUV/PTOV 27/59 RD
Under/overfrequency protection depending on the two-level PTUV/PTOV 81U/81O RD
Synchrocheck RSYN 25 RD
Rotary field check 47 RD
Error locating with parallel performance compensation RFLO 21FL RD
Distance protection, current under-impedance, and V/C starting PSCH/PDIS/PTOC 21 RZ
QV protection     RD
Voltage imbalance PTOV 47O RD
Load shedding UFLS PTUV 81LSH RD
Ground fault differential protection
(*=double,**=triple-wound transformer)
PDIF 87NL RT
Two-level transformer differential protection
(*=double,**=triple-wound transformer)
PDIF RT
Line differential protection PDIF RL
Protection-related functions IEC 61850 ANSI KOMBISAVE
Transfer trips PSCH LAL RD
Signal comparison (phases and ground faults) PSCH 85 RD
Power monitor with H2 PSCH 85H2 RD
Control IEC 61850 ANSI KOMBISAVE
Circuit breaker control XSWI I↔O •
Disconnector control XSWI I↔O •
Grounding control XSWI I↔O •
Control with interlocking scheme XCBR I↔O •
Field control CBAY CBAY •
Local remote switchover LOCREM R/L •
Key switch SCILO •
Monitoring      
Trigger circuit monitor SCBR TCS •
Voltage transformer automatically tripped QRFUF 60 •
Auxiliary voltage monitor NZBAT •
Circuit breaker failure protection CBCM 50BF •
Measuring IEC 61850 ANSI KOMBISAVE
Three-phase current display MMXU 3I •
Three-phase voltage display LE MMXU 3ULE RD
Three-phase voltage display LL MMXU 3ULL RD
Ground current MMXU I0 RD
Zero voltage MMXU U0 RD
P/Q/S power MMXU SPQ RD
Power factor cos MMXU cos RD
Frequency MMXU f RD
Operating impedance RLL, RLE, XLL, XLE MMXU R/X RZ
Difference values between two systems: ΔU, Δf, Δa MMXU DU, Df, Da RZ
15 mins mean value with date per phase MMXU 3I /15 mins •
Events and fault data IEC 61850 ANSI KOMBISAVE
Number of events: Grid, malfunction, message, operation, test     >1,000
- measurements     all
Number of COMTRADE     15 s
Display: Main error, time, date, measurements     •
- Basic measurements V/C     •
- BASIC error locating: (DIRECTION)     RD
- Error locating: km/miles, R/X     RZ
Key  
RN: Easy definite-time protection RZ: Distance protection
RB: 16.7 Hz definite-time protection RL: Distance protection with power differential protection
RD: Directional definite-time protection and ground fault RT: Transformer differential protection
Comment: Actual function is contained in RN as well as in the higher value RZ  
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