7SR11 & 7SR12 Applications Guide
©2017 Siemens Protection Devices Limited Chapter 7 Page 33 of 48
2.17 Power (32)
Directional power protection is often applied to motor or embedded generator applications to detect loss of load or
loss of generation. For these applications, Real power may be a more appropriate operating quantity.
Power direction can also be used to recognise and record particular network operation arrangements such as
back feeds or embedded generation conditions.
2.18 Sensitive Power (32S)
The CT accuracy should be considered when setting this function for the application.
2.19 Power Factor (55)
Power factor limits can be set to provide alarms or even tripping for abnormal power factor load.
Power factor can also be used to switch in and out additional plant such as capacitors
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