Save-Tech

Platform and corresponding protection function

Protection IEC
61850
ANSI DIGI-
SAVE
POWER-
SAVE
KOMBI-
SAVE
Nondirectional overcurrent, two-level PTOC 50/51 RN
RB
RN RN
Switch failure protection RBRF 50BF RN
RB
RN RN
Automatic reclosure (ARC) RREC 79 RN RN RN
Thermal overload: Two-body model of thermal overload
of oil transformers
PTTR 49 & 49II RN
RB
RN RN
Minimal current PTUC 37 RN RN RN
Inrush protection PHAR 68 RN RN RN
Short-circuit switch-on protection PIOC 50 RN RN RN
Nondirectional ground current, two-level PTOC 50N/51N RN RN RN
Autoreclosure lock PMRI 66/86 RN RN RN
Locked rotor protection PZSU 14 RN RN RN
Load-jam protection PTOC 51M RN RN RN
Phase balance PTOC 46 RN RN RN
Start-up time monitoring PMSS 46 RN RN RN
Busbar protection according to H2 PSCH 85 RD RD RD
Zero current, two levels, U0 PTOV 59G RD RD RD
Basic directional ground short circuit protection U0/I0/Alpha/Beta
for low-resistance and rigid grids
PTOC 67N RD RD RD
Bidirectional ground fault for isolated, compensated (watt and P/Q) PTEF/PSDE 32N RD RD RD
Bidirectional ground fault
for isolated, compensated grids (energy)
PTEF/PSDE 67NIEF RD RD RD
Bidirectional short-circuit protection: two-level PTOC 67 RD RD RD
Under/overvoltage protection depending on the two-level PTUV/PTOV 27/59 RD RD RD
Under/overfrequency protection depending on the two-level PTUV/PTOV 81U/81O RD RD RD
Synchrocheck RSYN 25     RD
Rotary field check   47 RD RD RD
Error locating with parallel performance compensation RFLO 21FL RD V2 RD RD
Distance protection, current, under-impedance, and U/I starting PSCH/PDIS/
PTOC
21   RZ RZ
QV protection     RD V2 RD RD
Voltage imbalance PTOV 47O RD RD RD
Load rejection UFLS PTUF 81LSH   RD RD
Ground error 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
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