Power Protection: Power Factor (55) - 7Sr22; Figure 3.19-1 Logic Diagram: Power Factor Protection (55) - Siemens Argus 7SR21 Technical Manual

7SR210 & 7SR220 Description of Operation
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
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A binary or virtual input.

Figure 3.19-1 Logic Diagram: Power Factor Protection (55)

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