Geh 7285 kv2c encompass electronic meter 2 22

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GEH-7285, kV2c Encompass Electronic Meter 2-22 Operating Instructions Label Value d2_ Diagnostic Counter 2 d3_ Diagnostic Counter 3 d4_ Diagnostic Counter 4 d5_ Diagnostic Counter 5 d5A Diagnostic Counter 5 Phase A d5B Diagnostic Counter 5 Phase B d5C Diagnostic Counter 5 Phase C d6_ Diagnostic Counter 6 d7_ Diagnostic Counter 7 d8_ Diagnostic Counter 8 2.3.2.3 Phase Voltage and Current Conventions The per-phase information displayed by the Site Genie Monitor is referenced to the internal voltage and current sensors of the meter, filtered to the fundamental frequency component. The meter defines each phase in terms of meter elements. 2.3.2.3.1 Phase Notation Table 2-4. kV2c Meter Phase Notation shows the convention used by the Site Genie Monitoring System and within this book to describe service phases and meter elements. Table 2-4. kV2c Meter Phase Notation Display Label Defined Phase Meter Element PhA Phase A Left-hand element PhB Phase B Center element PhC Phase C Right-hand element Figure 2-17 shows two typical examples of how the phase labeling convention is used. The drawings assume that you are looking at the face of the meters as they sit in a socket.
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GEH-7285, kV2c Encompass Electronic Meter Operating Instructions 2-23 I A V A I B V B I C V C 16S 9S I A I B I C V A V B V C Figure 2-17 Phase Notation 2.3.2.3.2 Angle and Rotation Conventions The Phase A voltage is the reference for angular measurements. All angles are measured as lagging from the Phase A voltage. Unless shown otherwise, phase rotation is counterclockwise; therefore, positive angles measure the amount of lag from the Phase A voltage. Figure 2-18 illustrates these conventions. TIP The Site Genie Monitor uses the Phase A voltage as a reference point; therefore, the Phase A voltage angle is always 0.0 degrees. V a 0 ° 90 o Lagging 180 ° 270 o Lagging Phase Rotation Figure 2-18: Phase Angle Conventions
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GEH-7285, kV2c Encompass Electronic Meter 2-24 Operating Instructions 2.3.2.4 Phase Voltage and Current Displays Figure 2-19 shows typical Site Genie Phasor information for a form 16S meter installation as it appears on the display of a kV2c Meter. Phase A, Left Element Phase B, Center Element Phase C Right Element Voltage Phase Angle PhA 0.0° V Phb 120.2° V PhC 240.1° V Phase Voltage PhA 120.8 V Phb 120.1 V PhC 121.2 V Current Phase Angle PhA 9.8 ° A Phb 126.0 ° A PhC 243.8 ° A Phase Current PhA 36.7 A Phb 42.2 A PhC 29.2 A Figure 2-19: Phasor Display Examples The phasor information is most easily analyzed by plotting on a phasor diagram. Comparing the actual phasor diagram with the expected diagram for the service shows phase sequence and the sources of service wiring errors. Typical errors, such as polarity errors on transformers or mismatching currents and voltages, are easily diagnosed using the phasor diagram.
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  • Spring '18
  • Electric power transmission, Power factor, Electricity distribution, smart grid, Meter Block Diagram

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