ABB REG316 4 Series Operating Instructions Manual page 634

ABB Switzerland Ltd
Utility Automation
Functions
Numerical generator protection
This is an overview of the possible functions
according to the hardware variants. These
functions can be activated within the scope of
the CPU capacity. One or the other function
Protection Function
Definite time overcurrent (51)
Overcurrent with peak value evaluation (50)
Inverse time overcurrent (51)
Directional definite time overcurrent protection (67)
Directional inverse time overcurrent function (67)
Voltage-controlled protection (51-27)
Thermal overload function (49)
Stator overload (49S)
Rotor overload (49R)
Inverse time negative phase sequence (46)
Negative phase sequence current (46)
Generator differential (87G)
Transformer differential (87T)
3-winding trafo differential (87T)
* High-impedance REF
Definite time overvoltage (27,59)
Instant. overvolt. with peak value eval. (59,27)
Undervoltage (27)
Overexcitation with inverse time delay (24)
Overexcitation (24)
Frequency (81)
df/dt
80-95% Stator earth fault
** 100% Stator earth fault (64S)
Pole slip (78)
*** Rotor earth fault (64R)
** Rotor earth fault with injection principle
Minimum reactance (40)
Interturn fault
Underimpedance (21)
Reverse power (32)
Voltage comparison (60)
Voltage plausibility
Current plausibility
Metering
Delay
Counter
Logic
Project-specific control logic
Disturbance recorder
Fig. 3 Main versions
* Requires external stabilizing resistor and VDR
** Requires injection unit REX010 and injection transformer block REX011
*** Requires external measuring bridge YWX111-.. and coupling capacitors
1 minimum setting: >2%.
may be applied in accordance with the PT
connections (e.g. three phase for minimum
impedance or single phase for rotor and stator
earth fault protection).
Variant
1 2 3 4
1 1
REG316*4
1MRK502004-Ben
Page 6
5 6 7
1