Specifications

7SR242 Duobias Description Of Operation
©2010 Siemens Protection Devices Limited Chapter 1 Page 8 of 52
DUOBIAS-M 7 S R 2 4 2  -2 A ƒ 1-0CA0
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(continued from previous page) Option C: Standard version - plus
- 24 Overfluxing
- 27/59 Under/overvoltage
- 59N Neutral voltage displacement
- 81 Under/overfrequency
- 37 Undercurrent
- 46BC Open circuit
- 46NPS Negative phase sequence overcurrent
- 49 Thermal overload
- 50 Instantaneous phase fault overcurrent
- 50G/50N Instantaneous earth fault
- 51 Time delayed phase fault overcurrent
- 51G/51N Time delayed earth fault
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Additional Functionality |
No Additional Functionality A