Overview
The “Thermal overload protection, 3-phase advanced” function is used to protect the equipment (motors, generators, transformers, capacitors, overhead lines, and cables) against thermal overloads, and monitor the thermal state of motors, generators, transformers, capacitors, overhead lines, and cables.
For more detailed information on “Thermal overload protection, 3-phase advanced” 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 of Filter for RMS Value Gain
| Addr. | Parameter | C | Setting Options | Default Setting |
| Filter | ||||
| _:1 | Filter:Enable filter | no yes |
no | |
| _:2 | Filter:h(0) | -100.000 to 100.000 | 0.000 | |
| _:3 | Filter:h(1) | -100.000 to 100.000 | 0.000 | |
| _:4 | Filter:h(2) | -100.000 to 100.000 | 0.000 | |
| _:5 | Filter:h(3) | -100.000 to 100.000 | 0.000 | |
| _:6 | Filter:h(4) | -100.000 to 100.000 | 1.000 | |
Setting parameters for Stage with Thermal Overload Protection, 3-Phase – Advanced
| Addr. | Parameter | C | Setting Options | Default Setting |
| 49 Th.overl. # | ||||
| _:1 | 49 Th.overl. #:Mode | off on test |
off | |
| _:2 | 49 Th.overl. #:Operate & flt.rec. blocked | no yes |
no | |
| _:101 | 49 Th.overl. #:Threshold current warning | 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 | ||
| _:104 | 49 Th.overl. #:Threshold thermal warn. | 50 % to 100 % | 90 % | |
| _:105 | 49 Th.overl. #:Dropout threshold operate | 50 % to 99 % | 90 % | |
| _:112 | 49 Th.overl. #:Emerg. start T overtravel | 0 s to 15000 s | 300 s | |
| _:106 | 49 Th.overl. #:K-factor | 0.10 to 4.00 | 1.10 | |
| _:110 | 49 Th.overl. #:Thermal time constant | 10 s to 60000 s | 900 s | |
| _:111 | 49 Th.overl. #:Cooling time constant | 10 s to 60000 s | 3600 s | |
| _:107 | 49 Th.overl. #:Imax thermal | 1 A @ 100 Irated | 0.030 A to 10.000 A | 2.500 A |
| 5 A @ 100 Irated | 0.15 A to 50.00 A | 12.50 A | ||
| 1 A @ 50 Irated | 0.030 A to 10.000 A | 2.500 A | ||
| 5 A @ 50 Irated | 0.15 A to 50.00 A | 12.50 A | ||
| 1 A @ 1.6 Irated | 0.001 A to 1.600 A | 2.500 A | ||
| 5 A @ 1.6 Irated | 0.005 A to 8.000 A | 12.500 A | ||
| _:108 | 49 Th.overl. #:Imin cooling | 1 A @ 100 Irated | 0.000 A to 10.000 A | 0.500 A |
| 5 A @ 100 Irated | 0.00 A to 50.00 A | 2.50 A | ||
| 1 A @ 50 Irated | 0.000 A to 10.000 A | 0.500 A | ||
| 5 A @ 50 Irated | 0.00 A to 50.00 A | 2.50 A | ||
| 1 A @ 1.6 Irated | 0.000 A to 1.600 A | 0.500 A | ||
| 5 A @ 1.6 Irated | 0.000 A to 8.000 A | 2.500 A | ||
| _:109 | 49 Th.overl. #:Temperature rise at Irated | 40 K to 200 K | 70 K | |
| _:113 | 49 Th.overl. #:Storage of thermal replica | no yes |
no | |
| _:114 | 49 Th.overl. #:Behav. at I> Imax therm. | current limiting freeze therm. rep. |
current limiting | |
| _:118 | 49 Th.overl. #:Default temperature | -55°C to 55°C | 40°C | |
| _:117 | 49 Th.overl. #:Minimal temperature | -55°C to 40°C | -20°C | |
| _:44 | 49 Th.overl. #:Temperature sensor | Setting options depend on configuration | ||
Logic Diagrams & highlights
Logic Diagram of the Function Block Filter
Logic Diagram of the Thermal Overload Protection, 3-Phase – Advanced Stage
Logic Diagram of the Stage Control
