Overview
The “Undervoltage protection with any voltage” function detects any 1-phase undervoltage and is intended for special applications.
For more detailed information on “Undervoltage protection with any voltage” function, refer to SIPROTEC 5 devices, V8.30 & higher manuals.
To see other supported functions, click here.
Structure/Embedding of the Function
Setting Parameters
Setting parameters for Undervoltage protection with any voltage
| Addr. | Parameter | C | Setting Options | Default Setting |
| General | ||||
| _:2311:101 | General:Current-flow criterion | off on |
on | |
| Stage 1 | ||||
| _:571:1 | Stage 1:Mode | off on test |
off | |
| _:571:2 | Stage 1:Operate & flt.rec. blocked | no yes |
no | |
| _:571:9 | Stage 1:Measured value | VA measured VB measured VC measured VAB measured VBC measured VCA measured VAB calculated VBC calculated VCA calculated V0 calculated |
VA measured | |
| _:571:8 | Stage 1:Method of measurement | fundamental comp. RMS value |
fundamental comp. | |
| _:571:3 | Stage 1:Threshold | 0.300 V to 340.000 V | 80.000 V | |
| _:571:4 | Stage 1:Dropout ratio | 1.01 to 1.20 | 1.05 | |
| _:571:6 | Stage 1:Operate delay | 0.00 s to 60.00 s | 3.00 s | |
| Stage 2 | ||||
| _:572:1 | Stage 2:Mode | off on test |
off | |
| _:572:2 | Stage 2:Operate & flt.rec. blocked | no yes |
no | |
| _:572:9 | Stage 2:Measured value | VA measured VB measured VC measured VAB measured VBC measured VCA measured VAB calculated VBC calculated VCA calculated V0 calculated |
VA measured | |
| _:572:8 | Stage 2:Method of measurement | fundamental comp. RMS value |
fundamental comp. | |
| _:572:3 | Stage 2:Threshold | 0.300 V to 340.000 V | 65.000 V | |
| _:572:4 | Stage 2:Dropout ratio | 1.01 to 1.20 | 1.05 | |
| _:572:6 | Stage 2:Operate delay | 0.00 s to 60.00 s | 0.50 s | |
Logic Diagrams & highlights
Logic Diagram of an Undervoltage Protection with Any Voltage Stage
