HomeRulebook HomeBalancing and Settlement CodeCodes of PracticeCode of Practice 4 The Calibration Testing and...
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CONTENTS

  • 1. SCOPE
  • 2. APPLICATION TO OTHER CODES OF PRACTICE
  • 3. REFERENCES
  • 4. DEFINITIONS AND INTERPRETATIONS
    • 4.1 Accredited Laboratory ‡
    • 4.2 Actual Metering Point ‡
    • 4.3 Adjustment ‡
    • 4.4 Blank Calibrated Meter ‡
    • 4.5 Boundary Point *
    • 4.6 Calibration ‡
    • 4.7 Commissioning ‡
    • 4.8 Commissioning End to End Check ‡
    • 4.9 Compensation ‡
    • 4.10 Compensated Meter ‡
    • 4.11 Defined Metering Point ‡
    • 4.12 electricity *
    • 4.13 Equipment Owner *
    • 4.14 Independent Connection Provider †
    • 4.15 Meter *
    • 4.16 Meter Type ‡
    • 4.17 Metering Equipment *
    • 4.18 Outstation *
    • 4.19 Overall Accuracy ‡
    • 4.20 Reference Conditions ‡
    • 4.21 Reference Standard ‡
    • 4.22 Reference Temperature ‡
    • 4.23 Single Line Diagram (SLD) ‡
    • 4.24 Standard(s)
    • 4.25 Systems Connection Point *
    • 4.26 Testing Facilities
    • 4.27 Test House ‡
    • 4.28 Traceable ‡
    • 4.29 Transfer Standard ‡
    • 4.30 Working Standard ‡
  • 5 CALIBRATION,COMMISSIONING AND RECORD KEEPING FOR METERING EQUIPMENT [4]
    • 5.1 Meters – Calibration (CoPs 1,2,3,5,6 and 7)
      • 5.1.1 Types of Calibration
      • 5.1.2 Meter Calibration Criteria
      • 5.1.3 Sealing
      • 5.1.4 Records
    • 5.2 Sample Calibrations(CoPs 1,2,3,5,6 and 7)
    • 5.2A End of Life Sample Calibrations
    • 5.4 Measurement Transformers and Testing Facilities
      • 5.4.1 Responsibility for Calibrations and maintenance of Records.
      • 5.4.2 Initial Calibration
      • 5.4.3 Periodic Calibration
      • 5.4.4 Records
    • 5.5 Voltage failure alarm
    • 5.6 Commissioning
      • 5.6.1 Instruments for Commissioning
      • 5.6.2 Commissioning Tests
      • 5.6.3 Sealing
      • 5.6.4 Records
    • 5.7 Proving
    • 5.8 Commissioning End to End Check
    • 5.8 Single Line Diagram
  • 6 NON HALF HOURLY METERING SYSTEMS[15] AND COP10 HH METERING SYSTEMS
    • 6.1 Commissioning
    • 6.2 Commissioning Tests
  • 7 CALIBRATION EQUIPMENT FOR METERS
    • 7.1 Reference Standards
      • 7.1.1 Temperature tolerance
      • 7.1.2 Calibration intervals
    • 7.2 Transfer Standards
      • 7.2.1 Temperature tolerance
      • 7.2.2 Calibration intervals
      • 7.2.3. Outside specification
    • 7.3 Working Standards
      • 7.3.1 Temperature tolerance
      • 7.3.2 Calibration intervals
      • 7.3.3 Outside specification
    • 7.4 Records
    • 8 Calibration Equipment for Measurement Transformers
    • 8.1 Reference Standards
      • 8.1.1 Temperature tolerance
      • 8.1.2 Calibration intervals
    • 8.2 Records
  • APPENDIX A. CALIBRATION PERIOD TABLE
  • APPENDIX B. TEST POINTS
  • APPENDIX C. MEASURED ERRORS
  • APPENDIX D. MEASUREMENT UNCERTAINTY
  • APPENDIX E. ANNUAL REPORT FORMAT

Code of Practice 4: The Calibration, Testing and Commissioning Requirements of Metering Equipment for Settlement Purposes V19.0

Effective From Date:22/09/2025
Status:LIVE
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