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MEA 2017 ANSI Standards Update

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This presentation was part of a roundtable discussion at the MEA Electric Operations Technical and Leadership Summit and gives background, history and overview of ANSI Standards.

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MEA 2017 ANSI Standards Update

  1. 1. 1 10/02/2012 Slide 1 NEMA/ANSI Standards: Background,Updates, and Discussion Prepared by Rob Reese,TESCO for Midwest Energy Association ELECTRIC OPERATIONS TECHNICAL & LEADERSHIP SUMMIT Springfield, IL May 12, 2017
  2. 2. 2 Agenda •Background, History, and Overview •Updates from Spring 2017 Meetings •Roundtable: -Questions -Discussion
  3. 3. 3 Background, History, and Overview Treaty of the Meter Convention du Mètre – Paris Metre Convention May 20, 1875 17 Nation Signees, including the US The treaty set up an institute for the purpose of coordinating international metrology and for coordinating the development of the metric system. Initially it was only concerned with the units of mass and length but, in 1921, at the 6th meeting of the General Conference on Weights and Measures (CGPM), it was revised and its mandate extended to cover all physical measurements. -Wikipeadia
  4. 4. 4 Background, History, and Overview Treaty of the Meter The treaty also set up associated organizations to oversee the running of the institute. The CGPM (Conférence générale des poids et mesures) – a meeting every four to six years of delegates from all member states. The International Committee for Weights and Measures (Comité international des poids et mesures or CIPM) – an advisory body to the CGPM consisting of 18 prominent metrologists from 18 different countries. The International Bureau of Weights and Measures (Bureau international des poids et mesures or BIPM) – an organisation based at Sèvres, France that has custody of the International Prototype Kilogram, provides metrology services for the GCPM and CIPM, houses the secretariat for these organisations and hosts their formal meetings. - Wikipeadia
  5. 5. 5 Background, History, and Overview Treaty of the Meter International Organization of Legal Metrology Organisation Internationale de Métrologie Légale - OIML Paris, 1955 Promotes the global harmonization of the legal metrology procedures that underpin and facilitate international trade. OIML R46 – International Standard for Electric Meters - Wikipeadia
  6. 6. 6 Background, History, and Overview Treaty of the Meter Therefore, the US has an obligation, as one of the treaty signees, to adhere to the provisions set forth in the treaty and OIML R46 Standard.
  7. 7. 7 Background, History, and Overview ANSI (American National Standards Institute) -Open to All Interested Parties And NEMA (National Electrical Manufacturers Association) -Meter and Equipment Manufacturers Only -Membership Dues are Assessed -8-EI-1 - Meter Manufacturers -8-EI-3 - Sockets and Test Equipment Manufacturers
  8. 8. 8 Background, History, and Overview Both serve to provide accreditation to the various standards committees (or bodies) Separate and independent until the late 80’s/early 90’s NEMA purchased ANSI Allows ANSI to run largely independent
  9. 9. 9 Background, History, and Overview New Standards: The Standards Development Process 1. Project initiation 2. Developing the draft 3. Balloting (gathering comments) 4. Codes and Standards Committee approval 5. Editing and publication Reference: http://www.nema.org/Standards/About-Standards/Pages/How-NEMA-Standards-Are-Developed.aspx
  10. 10. 10 Background, History, and Overview Standards Maintenance Committees must re-affirm, update, or withdraw all current standards every five years (2 year extension available)
  11. 11. 11 Background, History, and Overview Standards Maintenance ANSI C12 Standards Status – April 2017 Designation Final Action Date Title Responsible Subcommittee Responsible NEMA Section Project Action ANSI C12.1-2014 6/27/2008 Electricity Metering, Code for SC 1 8EI - 1TC Published 3-30-16 ANSI C12.4-1984 (R2002, R2011) 5/19/2011 Registers, Mechanical Demand SC 1 8EI – 1TC Reaffirmed. Published Jan. 6, 2012 *Reaffirm or Revise? ANSI C12.5-1978 (R2002) 5/19/2011 Meters, Thermal Demand SC 1 8EI –1TC Reaffirmed. Published Oct. 25, 2012 *Reaffirm or Revise? ANSI C12.6-1987 (R2016) 01/12/17 Phase-Shifting Devices Used in Metering, Marking and Arrangement of Terminals for SC 15 8EI – 3TC Last Published 9-26-2012 Voted to Reaffirm at c12 main 4/2016 Pins submitted 5/27/16 BSR 8 filed BSR9 submitted 1/11/17 ANSI Approval 01/12/17 Reaffirm. In Publication needs re- typing ANSI C12.7-2005 (R2014) 8/14/14 Requirements for Watthour Meter Sockets SC 15 8EI – 3TC Approved August 14, 2014 Published Feb. 23, 2015 ANSI C12.8-1981 (R2012) 5/19/2011 Watthour Meters, Test Blocks and Cabinets for Installation of Self- Contained “A” Base SC 15 8EI – 3TC Published Dec. 18, 2012 *Reaffirm or Revise? 2 – year BSR- 11 Extension request submitted to ANSI
  12. 12. 12 Background, History, and Overview “Org Chart” NEMA ANSI ASC ASC ASC ASC SUB-COMMITTEE WORKING GROUP IEEE SINGLE COMPANY ACCREDITED STANDARDS COMMITTEES (ACTUALLY CREATES AND MAINTAINS THE STANDARDS) EXAMPLE: ANSI C12 SUPPORTS THEIR MEMBER MANUFACTURERS SETS THE RULES -PROCEDURES, DECORUM, ETC.
  13. 13. 13 Background, History, and Overview Who does all this? 1.Users (Utilities) 2. Manufacturers (Meter Manufacturers, Equipment Manufacturers, etc.) 3. Interested Parties (Educational, Legislative, etc.)
  14. 14. 14 Background, History, and Overview Standards are actually created at the sub- committee level: ANSI C12.1 Code for Electricity Metering SC1 ANSI C12.7 Requirements for Watthour Meter Sockets SC15 ANSI C12.20 0.2 and 0.5 Accuracy Class SC16 ANSI C12.29 Field Testing of Metering Sites SC29 (placeholder)
  15. 15. 15 Background, History, and Overview •Meet twice a year (Spring and Fall) •In conjunction with the Edison Electrical Institute (EEI) Conference Paul Orr Program Manager, NEMA Industry Operations National Electrical Manufacturers Association 1300 North 17th Street, Suite 900 Rosslyn, VA 22209 (703) 841-3227 Pau_Orr@nema.org
  16. 16. 16 Background, History, and Overview Next Meeting: October 2-5, 2017 Houston, TX www.eei.org
  17. 17. 17 Updates – Spring 2017 Agenda: ANSI C12-SC24 VAR/VARh Aux. Device Influence WG Field Testing of Metering Sites Demand Type Test WG VA Working Group ANSI C12 SC15 ANSI C12 SC1 ANSI C12 SC16 ANSI Main
  18. 18. 18 Updates – Spring 2017 VAR / VARh SC Working Group is currently working on a draft document to define how to calculate and measure VAR and VARh. Document is in its early stages.
  19. 19. 19 Updates – Spring 2017 Aux. Device Influence WG Working Group is currently working on a draft document to define and test the effects of auxiliary devices to the accuracy and performance of the meter. The committee agreed that the scope should only include wireless communication devices, with PLC devices be added in the future. The committee is also deciding if the standard should be based on the communication device being on or off (i.e. Will the standard test the influence of the communications module on the meter, or the performance of the meter when the communications module is active?)
  20. 20. 20 Updates – Spring 2017 C12 SC15 Test Switches and Sockets No additional information on the proposed instrument transformer barcode system, similar to the “standardized” barcodes for meters. It was announced that the new meter forms, including the auxiliary power input pin, were approved. A review of ANSI C12.8 “Test Blocks and Cabinets for Installation of Self-Contained “A” Base Watthour Meters.” was conducted, and it was deemed that very little remains relevant to the industry now. However, it was noted that Figure 4, in the document, is still relevant and used in EUSERC approved applications. A motion to take figure 4 and move into C12.7 was made and unanimously approved. The rest of C12.8 be withdrawn sometime after C12.7 is updated.
  21. 21. 21 Updates – Spring 2017 Field Testing of Metering Sites Draft allows for testing with a) Customer potential and current, b) Customer potential and generated current, and c) Generated Potential and current. Main conceptual idea: If a technician executes a meter test in the field, in a great majority of cases, the meter will pass the test, and no further analysis is necessary. However, if the meter “fails”, then the technician will need to execute additional analysis to ascertain if the meter is being used within the manufacturer’s specified operating range and the test was executed within the specified bounds. Committee agreed to create a WG to draft a paragraph to direct the field technician as to what additional information/measurements are required for further analysis.
  22. 22. 22 Updates – Spring 2017 C12 SC16 It was announced that ANSI C12-20 will go out to public review soon, and will be officially approved and published by March 2017 (update – end of April) 5.5.2 Loading for accuracy tests Unless otherwise specified, accuracy tests may be done with either series-parallel loading or polyphase loading; however, polyphase loading is recommended for all multi-element meters. For series-parallel loading, the meter shall be tested with the voltage circuit(s) effectively in parallel and with the appropriate current circuit(s) effectively in series. For polyphase loading, the meter shall be tested with voltage and current phase angles similar to actual service installations as described (polyphase loading) in Table 3. Polyphase loading will be mandatory for testing of polyphase meters effective January 1, 2020. When polyphase loading is used, the appropriate loading will depend on the meter configuration (meter Form). Accuracy tests done with polyphase loading shall pass for Typical Loading configurations as shown in Table 3. If the meter is certified for use with an alternate loading configuration, then for those tests designated in the last column of Table 6, testing shall be performed using all Alternate Loading configuration(s) particular to the type description shown in Table 3. The internal meter connections for these Forms Designations are provided in ANSI C12.10.
  23. 23. 23 Updates – Fall 2016 C12 Main Reports of Sub-committees C12-20 by the end of April
  24. 24. 24 Roundtable •Questions? •Discussion?
  25. 25. 25 Thank you! Please feel free to call or e-mail any questions Rob Reese Rob.Reese@TescoMetering.com 215-310-8809 (cell) The Eastern Specialty Company

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