Overview
The “Power protection (P,Q) 3-Phase” function is used to detect whether the active or reactive power rises above or drops below a set threshold, monitor agreed power limits and output warning indications, detect both active and reactive power feedback in the power systems or on electric machines, detect machines (motors, generators) running without load and output an indication to shut them down, and be integrated into any automation solution, for example, to monitor very specific power limits (further logical processing in CFC).
For more detailed information on “Power protection (P,Q) 3-Phase” function, refer to SIPROTEC 5 devices, V8.30 & higher manuals.
To see other supported functions, click here.
Structure/Embedding of the Function
Logical Combination of Operate Indications in CFC
Setting Parameters
Setting parameters of the function
| Addr. | Parameter | C | Setting Options | Default Setting |
| Power P> 1 | ||||
| _:6241:1 | Power P> 1:Mode | off on test |
off | |
| _:6241:2 | Power P> 1:Operate & flt.rec. blocked | no yes |
no | |
| _:6241:104 | Power P> 1:Measured value | power of phase A power of phase B power of phase C positive seq. power |
positive seq. power | |
| _:6241:3 | Power P> 1:Threshold | -200.0 % to 200.0 % | 80.0 % | |
| _:6241:101 | Power P> 1:Dropout ratio | 0.90 to 0.99 | 0.95 | |
| _:6241:103 | Power P> 1:Tilt power characteristic | -89.0 ° to 89.0 ° | 0.0 ° | |
| _:6241:7 | Power P> 1:Dropout delay | 0.00 s to 60.00 s | 0.00 s | |
| _:6241:6 | Power P> 1:Operate delay | 0.00 s to 60.00 s | 1.00 s | |
| Power P< 1 | ||||
| _:6271:1 | Power P< 1:Mode | off on test |
off | |
| _:6271:2 | Power P< 1:Operate & flt.rec. blocked | no yes |
no | |
| _:6271:105 | Power P< 1:Measured value | power of phase A power of phase B power of phase C positive seq. power |
positive seq. power | |
| _:6271:3 | Power P< 1:Threshold | -200.0 % to 200.0 % | 5.0 % | |
| _:6271:101 | Power P< 1:Dropout ratio | 1.01 to 1.10 | 1.05 | |
| _:6271:103 | Power P< 1:Tilt power char- acteristic | -89.0 ° to 89.0 ° | 0.0 ° | |
| _:6271:7 | Power P< 1:Dropout delay | 0.00 s to 60.00 s | 0.00 s | |
| _:6271:6 | Power P< 1:Operate delay | 0.00 s to 60.00 s | 1.00 s | |
| Power Q> 1 | ||||
| _:6301:1 | Power Q> 1:Mode | off on test |
off | |
| _:6301:2 | Power Q> 1:Operate & flt.rec. blocked | no yes |
no | |
| _:6301:105 | Power Q> 1:Measured value | power of phase A power of phase B power of phase C positive seq. power |
positive seq. power | |
| _:6301:3 | Power Q> 1:Threshold | -200.0 % to 200.0 % | 70.0 % | |
| _:6301:101 | Power Q> 1:Dropout ratio | 0.90 to 0.99 | 0.95 | |
| _:6301:103 | Power Q> 1:Tilt power characteristic | -89.0 ° to 89.0 ° | 0.0 ° | |
| _:6301:7 | Power Q> 1:Dropout delay | 0.00 s to 60.00 s | 0.00 s | |
| _:6301:6 | Power Q> 1:Operate delay | 0.00 s to 60.00 s | 1.00 s | |
| Power Q< 1 | ||||
| _:6331:1 | Power Q< 1:Mode | off on test |
off | |
| _:6331:2 | Power Q< 1:Operate & flt.rec. blocked | no yes |
no | |
| _:6331:105 | Power Q< 1:Measured value | power of phase A power of phase B power of phase C positive seq. power |
positive seq. power | |
| _:6331:3 | Power Q< 1:Threshold | -200.0 % to 200.0 % | -30.0 % | |
| _:6331:101 | Power Q< 1:Dropout ratio | 0.90 to 0.99 | 0.95 | |
| _:6331:103 | Power Q< 1:Tilt power characteristic | -89.0 ° to 89.0 ° | 0.0 ° | |
| _:6331:7 | Power Q< 1:Dropout delay | 0.00 s to 60.00 s | 0.00 s | |
| _:6331:6 | Power Q< 1:Operate delay | 0.00 s to 60.00 s | 1.00 s | |
Logic Diagrams & highlights
Logic Diagram of the Active Power Stage (Stage Type: Power P<)
Tilt-Power Characteristic
Logic Diagram of the Reactive Power Stage (Stage Type: Power Q<)
Tilt-Power Characteristic
Pickup Values and Characteristic Curves
