7SR210 & 7SR220 Description of Operation
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3.19 Power Protection: Power Factor (55) – 7SR22
Two power factor elements are provided.
Gn 55-n Setting
sets the pick-up power factor of the element.
Under-power factor or over-power factor operation can be set by the
Gn 55-n Operation
setting.
Gn 55-n 1ph/3ph Power allows the settings to be based on any one phase power factor or the average power
factor of all three phases.
An output is given after elapse of the
Gn 55-n Delay
setting.
Operation of the power factor elements can be inhibited when:
The measured current is below the
Gn 55 U/C Guard
setting
A VT Fail condition is detected
Inhibit 55-n
A binary or virtual input.
Figure 3.19-1 Logic Diagram: Power Factor Protection (55)
Summary of Contents for Argus 7SR21
Page 1: ...Energy Management 7SR21 7SR22 Argus Overcurrent Relay Reyrolle Protection Devices ...
Page 2: ......
Page 4: ...Contents 7SR11 and 7SR12 Page 2 of 2 2018 Siemens Protection Devices Limited ...
Page 185: ...7SR210 Settings Guide Unrestricted 2018 Siemens Protection Devices Limited Page 61 of 61 ...
Page 277: ...7SR220 Settings Guide Unrestricted Page 72 of 107 2013 Siemens Protection Devices Limited ...
Page 382: ...7SR220 Technical Manual Chapter 4 Page 2 of 96 2017 Siemens Protection Devices Limited ...
Page 386: ...7SR220 Technical Manual Chapter 4 Page 6 of 96 2017 Siemens Protection Devices Limited ...
Page 398: ...7SR220 Technical Manual Chapter 4 Page 18 of 96 2017 Siemens Protection Devices Limited ...
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