JJG 1148-2022 English PDF (JJG1148-2018)

JJG 1148-2022_English: PDF (JJG1148-2022)
Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
JJG 1148-2022260 Add to Cart Auto, < 3 mins AC Charge Spots for Electric Vehicles (for Trial Implementation) Valid
JJG 1148-2018150 Add to Cart Auto, < 3 mins AC Charging Spot for Electric Vehicles Obsolete

BASIC DATA
Standard ID JJG 1148-2022 (JJG1148-2022)
Description (Translated English) AC Charge Spots for Electric Vehicles(for Trial Implementation)
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 20,243
Date of Issue 2022-06-28
Date of Implementation 2022-12-28
Drafting Organization China Institute of Metrology, Shenzhen Institute of Metrology and Quality Inspection
Administrative Organization National Electromagnetic Metrology Technical Committee
Issuing agency(ies) State Administration for Market Regulation

BASIC DATA
Standard ID JJG 1148-2018 (JJG1148-2018)
Description (Translated English) AC Charging Spot for Electric Vehicles
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A55
Word Count Estimation 22,212
Date of Issue 2018-02-27
Date of Implementation 2018-05-27
Drafting Organization China Institute of Metrology, Shenzhen Institute of Metrology and Quality Inspection
Administrative Organization National Electromagnetic Measurement Technical Committee
Issuing agency(ies) State Administration of Quality Supervision, Inspection and Quarantine


JJF 1148-2022 JJF NATIONAL METROLOGICAL VERIFICATION REGULATIONS OF THE PEOPLE’S REPUBLIC OF CHINA JJG 1148-2022 AC Charge Spots for Electric Vehicles (for Trial Implementation) ISSUED ON: JUNE 28, 2022 IMPLEMENTED ON: DECEMBER 28, 2022 Issued by: State Administration for Market Regulation Table of Contents Introduction ... 5 1 Scope ... 6 2 Normative references ... 6 3 Terms ... 6 4 Overview ... 7 5 Metering performance requirements ... 8 5.1 Operate error ... 8 5.2 Clock time error ... 9 6 General technical requirements ... 9 6.1 Identification ... 9 6.2 Testing interface ... 10 6.3 Constant ... 10 6.4 Minimum power variable ... 10 6.5 Display of charging energy ... 10 7 Measuring instrument control ... 10 7.1 First verification, follow-up verification and in-use inspection ... 10 7.2 Verification conditions ... 10 7.3 Verification items and verification methods ... 11 7.4 Processing of verification results ... 16 7.5 Verification period ... 16 Annex A Format for original record of verification ... 17 Annex B Format for inner page of verification certificate/ verification result notification (Page 2) ... 20 Annex C Format for inner page of verification certificate/ verification result notification (Page 3) ... 21 AC Charge Spots for Electric Vehicles (for Trial Implementation) 1 Scope This Regulation applies to the first verification, follow-up verification and in-use inspection for AC charge spots for electric vehicles. The verification of AC charge spots for electric vehicles based on the statistical sampling method can be carried out in accordance with this Regulation. 2 Normative references This Regulation refers to the following documents: JJG 596, Verification Regulation of Electrical Meters for Measuring Alternating- current Electrical Energy JJG 597, Verification Regulation of Verification Equipment for AC Electrical Energy Meters JJF 1139, Principle and method for determination verification period of measuring instruments For the dated documents, only the versions with the dates indicated are applicable to this Regulation; for the undated documents, only the latest version (including all the amendments) is applicable to this Regulation. 3 Terms The following terms and definitions apply to this document. 3.1 AC charge spot A special device that uses conduction method to provide AC power for electric vehicles with on-board charging equipment, it has the functions of measuring and storing AC power and providing results to users. 3.2 connection point A connection point that the AC charge spot is connected to electric vehicle. NOTE: If the output cable is a fixed part of the AC charge spot, this point is defined as the connector at the end of the cable. Otherwise, the connection point is defined as the cable insertion point of the AC charge spot. 3.3 real load test method A method of verification using the actual operating load. 3.4 virtual load test method A method that uses the virtual load provided by the AC charge spot verification device for verification. 3.5 operate error AC power measurement error of AC charge spot under working conditions. 3.6 test output A device that provides pulses corresponding to the AC power measured by the AC charge spot. 3.7 constant A numerical value representing the relationship between the electric energy recorded by the AC charge spot and the corresponding test output value. 3.8 nominal voltage The output voltage of the AC charge spot specified by the manufacturer during normal operation. 4 Overview An AC charge spot (hereinafter referred to as charge spot) is a metering device that provides AC power for electric vehicles. It is mainly composed of spot body, connecting device for conductive charging, control unit, metering module, display interface or data transmission interface and other parts. The schematic diagram of the charge spot is shown in Figure 1. The charge spot provides the required AC power for the electric vehicle through the control unit. The electric energy is transmitted to the electric vehicle through the connection device for conductive charging to meet the charging demand. The metering module completes the metering of electric energy, and outputs the measured quantity to the display interface or data transmission interface. 2 For charge spots installed before January 1, 2023, if the accuracy level is not marked, it will be implemented as level 2. 6.2 Testing interface The technical indicators of the test output and communication interface of the charge spot for verification shall meet the requirements of relevant standards. 6.3 Constant The charge spot shall have a pulse output corresponding to the measured AC power, which shall be consistent with the constant marked on the nameplate. 6.4 Minimum power variable The minimum electric energy variable shall be 0.001kW·h. 6.5 Display of charging energy The charge spot shall be able to display the charging energy. The number of digits displayed for electric energy shall not be less than 6 (including at least 3 decimal places). For charge spots with time-of-use billing function, the clock time display resolution is not greater than 1s. 7 Measuring instrument control 7.1 First verification, follow-up verification and in-use inspection The first verification is a verification of charge spots that have not been verified. The follow-up verification is any verification after the first verification. Repaired charge spots must be verified as the first verification. In-use inspection is an inspection to find out whether the verification mark or verification certificate of the charge spot is valid, and whether the verified charge spot has been significantly modified. 7.2 Verification conditions 7.2.1 Ambient conditions for verification When verifying the charge spot, the following conditions shall be met: - Verification conditions and their deviations do not exceed those specified in Table 3. - There shall be no appreciable shock load. The seal of the charge spot is complete. the electric energy values measured simultaneously by the verification device and the charge spot under verification, so as to determine the operate error of the charge spot under verification. Method I: When both the charge spot calibrator and the charge spot under verification are working continuously, use the pulse output by the charge spot under verification to control the counting of the calibrator to determine the operate error of the charge spot under verification. When using this method, apply method II to check whether the charge spot constant is correct. The operate error γ of the verified charge spot is calculated according to (1). Where, m - the measured pulse number; m0 - the calculated and determined pulse number, calculated according to formula (2). Where, N - the number of pulses of the verified charge spot; C0 - the constant of calibrator, imp/ (kW·h); CL - the constant of the verified charge spot, imp/ (kW·h). NOTE: Select the appropriate pulse number N of the charge spot under verification, so that the quantification error of the calculation and determination of the number of pulses is not greater than 1/10 of the grade index of the charge spot under verification. Method II: When both the charge spot calibrator and the charge spot under verification are working continuously, use the output electric energy indication value of the verified charge spot and the measured electric energy value of the charge spot calibrator to determine the operate error of the verified charge spot. The operate error γ of the verified charge spot is calculated according to (3): Where, E' - the difference between the indicated value of the electric energy when the charge spot under verification stops charging and when charging starts, kW·h; E - the energy value measured by the calibrator, kW·h; γ0 - the established systematic error of the verification device; when no correction is required, γ0=0. The calibrator shall run synchronously with the charge spot under verification. The ratio (%) of the electric energy value represented by the last word (or the minimum scale value) of the display of the charge spot under verification to the accumulated E' shall not be greater than 1/5 of the grade index of the charge spot under verification. During the verification process, record the error measurement data at least twice. Take the average value to calculate the operate error. 2) Virtual load test method Use a verification device. Compare the electric energy values measured simultaneously by the verification device and the charge spot under verification, so as to determine the error of the charge spot under verification. When using the virtual load test method, the influence of the connection position on the test results shall be considered. The standard table method is used to test the charge spot according to the provisions of 1). Use watt-second method to verify the charge spot. Use a calibrator to measure the set constant power or use a standard power source to determine the power. The quantification error of the number of digits displayed by the calibrator or power source shall not be greater than 1/10 of the grade index of the charge spot under verification. At the same time, use a standard timer to measure the time required for the charge spot to output several pulses at a constant power. The actual electric energy is obtained by the product of this time and the constant power. Compare with the electric energy measured by the charge spot to determine the operate error of the charge spot. The operate error is calculated according to formula (4): 7.4 Processing of verification results 7.4.1 Processing of verification results 7.4.1.1 Judging all data shall be subject to the rounded data. 7.4.1.2 The rounding interval of operate error is ......


JJG 1148-2018 JJG NATIONAL METROLOGICAL VERIFICATION REGULATION OF THE PEOPLE’S REPUBLIC OF CHINA AC Charging Spot for Electric Vehicles ISSUED ON. FEBRUARY 27, 2018 IMPLEMENTED ON. MAY 27, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the PRC Table of Contents Introduction ... 6  1 Scope ... 7  2 References ... 7  3 Terms ... 7  3.1 AC charging spot ... 7  3.2 Real load test method ... 7  3.3 Virtual load test method ... 7  3.4 Minimum pay variable ... 8  3.5 Operating error ... 8  3.6 Test output ... 8  3.7 Constant ... 8  3.8 Nominal voltage ... 8  4 Overview ... 8  5 Metrology performance requirements ... 9  5.1 Operating error ... 9  5.2 Indication error ... 10  5.3 Pay amount error ... 11  5.4 Clock indication error... 11  6 General technical requirements ... 11  6.1 Symbol ... 11  6.2 Detection interface ... 11  6.3 Constant ... 11  6.4 Minimum electrical energy variable ... 12  6.5 Display of charging spot ... 12  6.6 Insulation resistance ... 12  7 Metrology instrument control ... 12  7.1 First verification, follow-up verification ... 12  7.2 Verification conditions ... 12  8 Verification items ... 13  9 Verification methods ... 14  9.1 Appearance examination ... 14  9.2 Insulation resistance test ... 14  9.3 Determination of operating error ... 14  9.4 Determination of indication error ... 18  9.5 Determination of charging pay amount error ... 19  9.6 Determination of clock indication error ... 20  10 Verification result processing and verification period ... 20  10.1 Verification result processing ... 20  10.2 Verification period ... 21  Appendix A Format of verification original record of charging spot ... 22  Appendix B Format of inside page of verification certificate/verification result notice (Page 2) ... 24  Appendix C Format of verification result page of verification certificate/verification result notice (Page 3) ... 25  Verification Regulation of AC Charging Spot for Electric Vehicles 1 Scope This Regulation is applicable to the first verification, follow-up verification, and in-service examination of AC charging spot for electric vehicles (hereafter known as charging spot for short). 2 References This Regulation refers to the following documents. JJG 596-2012 Electrical Meters for Measuring Alternating-current Electrical Energy JJG 597-2005 Verification Regulation of Verification Equipment for AC Electrical Energy Meters For the dated references, only the versions with the dates indicated are applicable to this Regulation. For the undated references, the latest version (including all the amendments) are applicable to this Regulation. 3 Terms The following terms and definitions are applicable to this document. 3.1 AC charging spot A special power supply device which supplies AC power to electric vehicles with on-board charging equipment in a conductive manner. 3.2 Real load test method The method for verification by using real operating load. 3.3 Virtual load test method The method for verification by using the simulated load provided by the verification equipment of charging spot. 5.3 Pay amount error The absolute value of the difference between the pay amount shown by the charging spot and the amount payable, calculated according to the unit price and the indication value of charging electrical energy of charging spot, shall not exceed the minimum pay variable. 5.4 Clock indication error For the charging spot with time-sharing charging function, at the first verification, the clock indication error of the charging spot shall not exceed 5 s. At the follow- up verification, it shall not exceed 3 min. 6 General technical requirements 6.1 Symbol There shall be the following symbols on the nameplate. - Name and model; - Name of manufacturer; - Standard on which the product is based; - Number and year of manufacture; - Nominal voltage, minimum current, and maximum current; - Constant; - Accuracy class; - Unit of metrology (The unit of metrology can be displayed in the display). 6.2 Detection interface The technical specifications of test output interface and communication interface for verification of charging spot shall conform to the requirements of relevant standards. 6.3 Constant The charging spot shall have a pulse output for measuring error, which shall be consistent with the constant marked by the nameplate. Where. E′ - The difference between the electrical energy indication at charging cut-off and at the start of charging of the tested charging spot, kWh; E - The electrical energy value measured by the standard electrical energy meter, kWh; γ0 - Defined system error of verification equipment, when correction is not needed, γ0=0. The standard meter shall operate synchronously with the tested charging spot. The ratio (%) of the electrical energy value represented by the last word (or the minimum graduation) of display of the tested charging spot TO the accumulated E' shall not be greater than 1/10 of the class index of the tested charging spot. Under each load power, it shall record the error determination data at least twice and take the average. If the average is at 0.8~1.2 times of the operating error limit of the tested charging spot, it shall carry out two determinations; and take the average of the determination data to calculate the operating error of the tested charging spot. 9.3.2.2 USE virtual load test method to verify charging spot DISCONNECT the tested charging spot from the power grid; USE the verification equipment; under the specified load point, COMPARE the electrical energy values measured simultaneously by the verification equipment and the tested charging spot, to determine the error of the tested charging spot. The verification of charging spot by the standard meter method is performed with reference to the provisions of 9.3.2.1. USE watt-second method to verify charging spot. USE the standard power meter to determine the set constant power; or USE the standard power source to determine the power. The display digits of the power meter or power source shall meet the provisions of Table 7. At the same time, USE a standard time- measurer to measure the time required for the charging spot to output several pulses at constant power. The actual electrical energy, obtained by the product of the time and the constant power, is compared with the electrical energy measured by the charging spot, to determine the relative error of charging spot. The relative error shall be calculated according to the equation (4). Appendix A Format of verification original record of charging spot Verification original record of AC charging spot for electric vehicles Verification certificate/verification result notice No.. Date of verification. Entrusting organization. Address of the organization. Instrument name. Model. Exit-factory No.. Manufacturing company. Accuracy level. Connection mode. Voltage. Current. Phase line. Constant. Technical base. Temperature. °C Relative humidity. % Nominal voltage. V Frequency. Hz Verification place. Names of standards Model Equipment No. Verification/calibration certificate No. Expiration date Accuracy level Verification items Verification results 1. Appearance examination □Qualified/□Unqualified 2. Insulation resistance Test voltage V, insulation resistance value MΩ □Qualified/□Unqualified 3. Operating error □Qualified/□Unqualified Voltage Current Power factor Operating error/% Temperature corrected value. e= Error 1 Error 2 Average Round-off result 4. Indication error □Qualified/□Unqualified ......


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