Overview
The “Arc protection” function detects arcs in air-insulated switchgear parts without delay and in a fail-safe way, limits system damage through instantaneous high-speed tripping, protects systems from thermal overload, increases safety of personnel, trips in a 3-pole way, and is suitable for use in all voltage levels.
For more detailed information on “Arc protection” 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 Arc protection Function
| Addr. | Parameter | C | Setting Options | Default Setting |
| General | ||||
| _:2311:1 | General:Mode | off on test |
on | |
| _:2311:2 | General:Sensor supervi- sion | no yes |
yes | |
| _:2311:3 | General:Threshold I> | 1 A @ 100 Irated | 0.030 A to 35.000 A | 2.000 A |
| 5 A @ 100 Irated | 0.15 A to 175.00 A | 10.00 A | ||
| 1 A @ 50 Irated | 0.030 A to 35.000 A | 2.000 A | ||
| 5 A @ 50 Irated | 0.15 A to 175.00 A | 10.00 A | ||
| 1 A @ 1.6 Irated | 0.001 A to 1.600 A | 2.000 A | ||
| 5 A @ 1.6 Irated | 0.005 A to 8.000 A | 10.000 A | ||
| _:2311:4 | General:Threshold 3I0> | 1 A @ 100 Irated | 0.030 A to 35.000 A | 1.000 A |
| 5 A @ 100 Irated | 0.15 A to 175.00 A | 5.00 A | ||
| 1 A @ 50 Irated | 0.030 A to 35.000 A | 1.000 A | ||
| 5 A @ 50 Irated | 0.15 A to 175.00 A | 5.00 A | ||
| 1 A @ 1.6 Irated | 0.001 A to 1.600 A | 1.000 A | ||
| 5 A @ 1.6 Irated | 0.005 A to 8.000 A | 5.000 A | ||
| Stage 1 | ||||
| _:14551:1 | Stage 1:Mode | off on test |
off | |
| _:14551:2 | Stage 1:Operate & flt.rec. blocked | no yes |
no | |
| _:14551:9 | Stage 1:External trip initiation | no light current |
no | |
| _:14551:8 | Stage 1:Operating mode | light only current and light |
current and light | |
| _:14551:11 | Stage 1:Sensor | point sensor line sensor custom |
point sensor | |
| _:14551:7 | Stage 1:Threshold light | -34.00 dB to -10.00 dB | -20.00 dB | |
| _:14551:10 | Stage 1:Channel | Setting options depend on configuration | ||
| Stage 2 | ||||
| _:14552:1 | Stage 2:Mode | off on test |
off | |
| _:14552:2 | Stage 2:Operate & flt.rec. blocked | no yes |
no | |
| _:14552:9 | Stage 2:External trip initiation | no light current |
no | |
| _:14552:8 | Stage 2:Operating mode | light only current and light |
current and light | |
| _:14552:11 | Stage 2:Sensor | point sensor line sensor custom |
point sensor | |
| _:14552:7 | Stage 2:Threshold light | -34.00 dB to -10.00 dB | -20.00 dB | |
| _:14552:10 | Stage 2:Channel | Setting options depend on configuration | ||
| Stage 3 | ||||
| _:14553:1 | Stage 3:Mode | off on test |
off | |
| _:14553:2 | Stage 3:Operate & flt.rec. blocked | no yes |
no | |
| _:14553:9 | Stage 3:External trip initiation | no light current |
no | |
| _:14553:8 | Stage 3:Operating mode | light only current and light |
||
| _:14553:11 | Stage 3:Sensor | point sensor line sensor custom |
point sensor | |
| _:14553:7 | Stage 3:Threshold light | -34.00 dB to -10.00 dB | -20.00 dB | |
| _:14553:10 | Stage 3:Channel | Setting options depend on configuration | ||
Logic Diagrams & highlights
General Logic Diagram of the Function Block

Logic Diagram of the Stage

Layout and Connection of the Optical Point Sensors (Operating Mode = Light only)

Layout and Connection of the Optical Point Sensors (Operating Mode = Current and Light)

Arc Protection with External Trip Initiation

Layout and Connection of the Optical Line Sensors (Operating Mode = Current and Light)
