6 replace the cover by aligning it with the openings

This preview shows page 87 - 92 out of 142 pages.

6. Replace the cover by aligning it with the openings in the base and rotating it clockwise approximately 30 degrees. 7. Install security seals as required. Caution POLYPHASE TESTING OF kV2c METER The kV2c meter is designed to meter conventional services with nominal line-to line voltages up to 480 Volts for meters rated 120-480 Volts or line-to-line voltages up to 208 Volts for meters rated 57-120V. Operation at voltages more than 10% above these ratings can lead to shortened life or failure . Do not apply polyphase test voltages, using “Wye” test conditions, at voltages higher than 305 Volts line-to-neutral (277V + 10%) for 120-480V rating; no higher than 132 Volts line-to-neutral (120V +10%) for 57-120V rating Meter forms 9S, 10A, 36S, 48A, 16S or 16A rated 120-480V may be applied in 600/345V “Wye” services. Polyphase “Wye” test voltages applied to these meters must not exceed 380V line-to-neutral (345V +10%) For example, polyphase testing with 480 Volt “Wye” line-to-neutral conditions will result in voltages in excess of 800 Volts being applied to the meter. Stresses of this magnitude can result in immediate failure of the meter and/ or shorten meter life.
Image of page 87

Subscribe to view the full document.

Image of page 88
GEH-7285, kV2c Encompass Electronic Meter Site Analysis Guides 5-1 5. Site Analysis Guides NOTICE: These site analyses include rudimentary connection diagrams for identification of metering installation. These diagrams are not metering installation guides. Table 5-1 Site Analyses Site Analyses pages to See (Blondel solutions are in bold type ) Traditional metering schemes not satisfying Blondel’s theorem have demonstrated acceptable commercial accuracy. To fully realize the superior accuracy of electronic electricity meters, use Blondel metering solutions everywhere practical . Keep electrical energy the most accurately measured common commodity . See Figure 5-1, The Site Genie ° Worksheet. 2W-1 φ 3W-1 φ 3W-Network 3W- Δ 4W- Δ 4W-Y 5W-2 φ 1S 5-2 2S 5-3 3S 5-4 5-5 4S 5-6 9S 5-7 5-8 12S 5-9 5-10 5-11 16S 5-12 5-13 36S 5-14 45S 5-15 5-16 5-17, 5-18 5-19, 5-20 5-21 56S 5-22 5-23 5-24, 5-25 5-26, 5-27 5-28 10A 5-29 5-30 13A 5-31 5-32 5-33 16A 5-34 5-35 36A 5-36 45A 5-37 5-38 5-39, 5-40 5-41, 5-42 5-43 48A 5-44 5-45
Image of page 89

Subscribe to view the full document.

GEH-7285, kV2c Encompass Electronic Meter 5-2 Site Analysis Guides KV2c Site Analysis Form 1S (Self-Contained) 2-wire, 1-phase, 1-element MO 3 - 5 Actual installation procedures, equipment, and connections must to applicable codes and standards Line Load A N 1S SERVICE KV2c METER E NA 90° 180° 270° V A 90° 180° 270° PHASOR I A I A PF = 1.0 Lagging Lagging 2-Wire Single phase A N B LONDE L solution
Image of page 90
GEH-7285, kV2c Encompass Electronic Meter Site Analysis Guides 5-3 kV2c Site Analysis Form 2S (Self-Contained) N A C 3- Singlephase 3-wire, 1-phase, 1-element MO 2 - 1 Actual installation procedures, equipment, and connections must to applicable codes and Line Load N A C 2S Accuracy is based on assumptions which, if not fulfilled, may result in systematic errors unrelated to meter calibration.
Image of page 91

Subscribe to view the full document.

Image of page 92
  • Spring '18
  • Electric power transmission, Power factor, Electricity distribution, smart grid, Meter Block Diagram

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern