The automation and protection set depends on the analog channel configuration and is limited by the maximum number of iZAZ350 software configuration objects. In the software version, you can select a set from the basic application library and individually configure the required group of protection functions. Depending on the case version, you can use 1 to 4 analog input modules; each module has 8 current or voltage inputs (maximum 32 analog measurement inputs). The following standard hardware versions of analog input modules are available:
| A | - current-voltage: I13f, 3Io, U13f, 3Uo |
| B | - current: I13f, I23f, I3, I4 |
| C | - voltage: U13f, U23f, U3, U4 |
The details on the availability of functions in certain hardware variants are listed in Table 1. CATALOG CARD (PDF 1,1 MB).
Protective function and automatic control library
- Overcurrent (50/51)
- Inverse-time overload overcurrent (51)
- Peak overcurrent (wide frequency range) (50/51)
- Inverse-time rotor overcurrent (49R)
- Thermal overcurrent (49M)
- Negative-sequence overcurrent (unbalance) (46)
- Inverse-time negative-sequence overcurrent (unbalance) (46)
- Undercurrent (37)
- Overcurrent with directional blocking (67)
- Three-stage overvoltage (59)
- Peak overvoltage (wide frequency range) (59)
- Three-stage undervoltage (27)
- Two-stage zero-sequence overvoltage (59N)
- Negative-sequence overvoltage (47)
- Positive-sequence undervoltage (27D)
- Rate-of-change voltage (59S/27S)
- Incremental voltage (59SA/27SA)
- Integral voltage (59SI/27SI)
- Two-stage earth-fault overcurrent (50N/51N)
- Inverse-time earth-fault overcurrent (51N)
- Two-stage directional earth-fault (MV) (59N/67N)
- Two-stage directional earth-fault (HV) (59N/67N)
- Non-directional admittance earth-fault (21N/67N)
- Directional conductance earth-fault (0÷90) ° (21N/67N)
- Directional susceptance earth-fault (0÷90) ° (21N/67N)
- Frequency (81O/81U)
- Rate-of-change of frequency (81S)
- Incremental rate-of-frequency-change (81SA)
- Overexcitation (24)
- Directional power supervision, reverse power (32R)
- Directional power supervision, low forward power (32L)
- External bistable signal (62)
- Load-jam motor (51LR)
- Starting-time supervision (48)
- Startup monitoring (66)
- Rotor stall monitoring (51LR)
- Phase-sequence voltage (47)
- Loss-of-excitation (40/27)
- Underimpedance (21)
- Against switch on non-excited generator (50/27)
- Loss-of-synchronism (RMS current pulsations) (51S)
- Diffe rential (generator, transformer, generator-transformer blocks), blocking for 2nd and 5th (87G/87T/87B)
- Line differential (two half-sets) (87L)
- Distance (five zones, polygonal or MHO impedance charactic) (21)
- Fault location function (LMZ)
- Power swing blocking function (68/68T)
- Restricted earth fault differential REF (IL1+IL2+IL3-3Io) (64REF)
- Ground-fault for rotor (64R)
- 100% generator stator ground-fault (3rd harmonics difference) (64S)
- Out-of-Step (slipping pole) (78)
- Power factor monitoring tgφ (55)
- Automatic underfrequency load shedding (81U)
- Automatic Reclosing (79)
- Automatic Transfer Switch (83)
- Automatic planned transfer switch (83)
- Automatic undervoltage load shedding (27)
- Local breaker failure (50BF)
- Tap changer control (voltage regulator) (90)
- Synchrocheck (25)
- Tester for rotor cages of induction motors
- Detection of cable insulation failures
- Auto matic generator synchronization (25A)
- Forcing of the active component of earth-fault current
- Capacitor bank switching control
