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JJG 1149-2022 English PDF (JJG1149-2018)

JJG 1149-2022_English: PDF (JJG1149-2022)
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JJG 1149-2022English260 Add to Cart 0--9 seconds. Auto-delivery Off-board Chargers for Electric Vehicles (for Trial Implementation) Valid JJG 1149-2022
JJG 1149-2018English150 Add to Cart 0--9 seconds. Auto-delivery Off-board Charger for Electric Vehicles Obsolete JJG 1149-2018


BASIC DATA
Standard ID JJG 1149-2022 (JJG1149-2022)
Description (Translated English) Off-board Chargers for Electric Vehicles(for Trial Implementation)
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 20,270
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 1149-2018 (JJG1149-2018)
Description (Translated English) Off-board Charger for Electric Vehicles
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A55
Word Count Estimation 22,280
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 1149-2022 JJF NATIONAL METROLOGICAL VERIFICATION REGULATIONS OF THE PEOPLE’S REPUBLIC OF CHINA JJG 1149-2022 Off-board Chargers 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 Metrology 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 ... 17 Annex A Format for original record of verification ... 18 Annex B Format for inner page of verification certificate/ verification result notification (Page 2) ... 21 Annex C Format for inner page of verification certificate/ verification result notification (Page 3) ... 22 Verification Regulation of Off-board Chargers for Electric Vehicles (for Trial Implementation) 1 Scope This Regulation applies to the first verification, follow-up verification and in-use inspection for off-board chargers for electric vehicles. The verification of off-board chargers for electric vehicles based on statistical sampling methods can be carried out in accordance with this Regulation. 2 Normative references This Regulation refers to the following documents: JJG 842-2017, Electronic Meters for Measuring Direct-current Electrical Energy JJF 1139, Principle and method for determination verification period of measuring instruments NB/T 33001-2018, Specification for electric vehicle off-board conductive charger 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 off-board charger A special device that is fixedly connected to an AC or DC power source, converts its electrical energy into DC electrical energy, charges the power battery of an electric vehicle by means of conduction, and has the functions of measuring, storing, and providing results to users. 3.2 connection point A connection point that the off-board charger is connected to the electric vehicle. NOTE: If the output cable is a fixed part of the off-board charger, 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 off-board charger. 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 charger verification device to verify. 3.5 constant-current charge A way that the battery is charged with a controlled constant current when the charging voltage is within the working range. 3.6 constant voltage charge A way when the charging current is within the working range, the battery is charged with a controlled constant voltage. 3.7 operate error DC energy measurement errors of off-board chargers under working conditions. 3.8 test output A device that provides pulses corresponding to the DC energy measured by off-board chargers. 3.9 constant A numerical value representing the relationship between the electric energy recorded by the off-board charger and the corresponding test output value. 4 Overview An off-board chargers for electric vehicles (hereinafter referred to as charger) is a metrology device that provides DC power for electric vehicles. It is mainly composed of rectification and chopper control unit, display interface or data transmission interface, metrology module, connection device for conductive charging and other parts. The schematic diagram of the charger is shown in Figure 1. The charger converts AC power into DC power through the rectification and chopper control unit. The DC power is sent to the electric vehicle through the connection device for conductive charging to meet the charging demand. The metrology module completes the measurement of DC electric energy, and outputs the measured quantity to the display interface or data transmission interface. not marked, the maximum current value is: rated power/[(Umax+Umin)/2]; the minimum current value is: 5A. 2 For chargers 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 charger used for verification shall meet the requirements of relevant standards. 6.3 Constant The charger shall have a pulse output corresponding to the measured DC energy. It 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 charger shall be able to display the charging energy. The number of digits for electric energy display shall be no less than 6 digits (including at least 3 decimal places). For chargers with time-sharing charging function, the resolution of clock time display is not greater than 1s. 7 Measuring instrument control 7.1 First verification, follow-up verification and in-use inspection The first verification is for a charger that has not been verified. The follow-up verification is any verification after the first verification. The repaired charger must be according to the first verification. In-use inspection is an inspection to find out whether the verification mark or verification certificate of the charger is valid, and whether the verified charger has been significantly modified. 7.2 Verification conditions 7.2.1 Ambient conditions for verification When verifying the charger, 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 charger is complete. b) Verification operate error Compare the DC power value measured simultaneously by the verification device and the charger under test, so as to determine the operate error of the charger under test. According to the principle, it can be divided into real load test method and virtual load test method. 1) Real load test method Connect the charger calibrator and load composition verification device to the connection point. Use method I or method II at the selected load point. Compare the DC power values measured simultaneously by the verification device and the charger under test, so as to determine the operate error of the charger under test. Method I: When both the charging pile calibrator and the inspected charger are working continuously, the pulse output by the inspected charger is used to control the counting of the charging pile calibrator to determine the operate error of the inspected charger. When using this method, use method Ⅱ to check whether the charger constant is correct. The operate error γ of the tested charger 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 tested charger; C0 - the constant of calibrator, imp/ (kW·h); CL - the constant of the charger under test, imp/ (kW·h). NOTE: Select the appropriate pulse number N of the tested charger, so that the quantization error of the calculated pulse number is not greater than 1/10 of the grade index of the tested charger. Method II: When both the charging pile calibrator and the inspected charger are working continuously, the operate error of the tested charger is determined by using the output electric energy indication value of the inspected charger and the electric energy value measured by the charging pile calibrator. The operate error γ of the charger under test is calculated according to (3): Where, E' - the difference between the indicated value of the output electric energy when the tested charger stops charging and starts charging, kW·h; E - the electric energy value measured by the standard meter, kW·h; γ0 - the established systematic error of the verification device, when no correction is required, γ0=0. The charging pile calibrator shall run synchronously with the tested charger. The ratio (%) of the electric energy value represented by the last word (or the minimum scale value) of the display of the tested charger to the accumulated E' shall not be greater than 1/5 of the grade index of the tested charger. 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 the verification device. Compare the DC power values measured simultaneously by the verification device and the tested charger, so as to determine the operate error of the tested charger. 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 verify the charger according to the provisions of 1). Use watt-second method to verify the charger. Use a verifier to measure the set constant power, or use a standard power source to determine the power. The quantization error of the number of digits displayed by the verifier or Where, T - the reference clock display time, ××h××min××s; T0 - the display time of the charging pile under inspection, ××h××min××s. The test results shall meet the requirements of 5.2. 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 1/10 of the accuracy level of the charger. 7.4.1.3 The rounding interval of the clock time error is 1s. 7.4.2 Rounding off method for measurement data 7.4.2.1 Rounding off method when the rounding off interval is 1: The right side of the reserved digit is for the reserved digit 1. If it is greater than 0.5, add 1 to the reserved digit. If it is less than 0.5, the reserved digit remains unchanged. If it is equal to 0.5, the reserved digit remains unchanged when it is an even number. Add 1 when the reserved digit is odd. NOTE: "Reserved digit" refers to the number corresponding to the rounding interval. This value is called a "reserved digit". 7.4.2.2 Rounding method when the rounding interval is n (n≠1): Divide the measured data by n. Then round off according to the method of 7.4.2.1. After rounding, multiply by n, which is the final rounding result. 7.4.3 If all items meet the requirements, it is judged as qualified, otherwise it is judged as unqualified. Chargers that pass the verification will be issued with a verification certificate (see Annexes B and C for the format of the verification certificate) and a verification-pass mark. 7.4.4 A verification-pass charger must be sealed at the position of the electric energy meter or metrology module used inside it. Splitters that are used separately also need to be sealed. NOTE: For chargers installed before January 1, 2023, the implementation of shunt seal requirements will be suspended until December 31, 2027, under special circumstances. 7.4.5 A test result notification will be issued to the unqualified charger (see Annexes B and C for the format). Cancel the original verification-pass seal or verification-pass mark. ......


JJG 1149-2018 JJG NATIONAL METROLOGICAL VERIFICATION REGULATION OF THE PEOPLE’S REPUBLIC OF CHINA Off-board Charger 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 Off-board charger ... 7  3.2 Constant current charging ... 7  3.3 Constant voltage charging ... 8  3.4 Minimum pay variable ... 8  3.5 Operating error ... 8  3.6 Test output ... 8  3.7 Constant ... 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 charger ... 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 ... 17  9.5 Determination of charging pay amount error ... 18  9.6 Determination of clock indication error ... 18  10 Verification result processing and verification period ... 19  10.1 Verification result processing ... 19  10.2 Verification period ... 20  Appendix A Format of verification original record of charger ... 21  Appendix B Format of inside page of verification certificate/verification result notice (Page 2) ... 23  Appendix C Format of verification result page of verification certificate/verification result notice (Page 3) ... 24  Verification Regulation of Off-board Charger for Electric Vehicles 1 Scope This Regulation is applicable to the first verification, follow-up verification, and in-service examination of off-board charger for electric vehicles (hereafter known as charger for short). 2 References This Regulation refers to the following documents. JJG 842-2017 Electronic Meters for Measuring Direct-current Electrical Energy NB/T 33001-2010 Specification for Electric Vehicle Off-board Conductive Charger 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 Off-board charger A special device which is fixedly installed on the ground and converts the AC electrical energy of the power grid into DC electrical energy to charge the power storage battery of the electric vehicle in a conductive manner. 3.2 Constant current charging The manner in which the storage battery is charged at a controlled constant current with charging voltage in its operating range. 5.3 Pay amount error The absolute value of the difference between the pay amount shown by the charger and the amount payable, calculated according to the unit price and the indication value of charging electrical energy of charger, shall not exceed the minimum pay variable. 5.4 Clock indication error The time of charger shall be accurate. For the charger with time-sharing charging function, at the first verification, the clock indication error of the charger 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; - Maximum voltage, minimum 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 the charger’s test output interface for verification and communication interface shall conform to the requirements of relevant standards. 6.3 Constant The charger 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 charger, 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, γ [should be. γ0]=0. The standard meter shall operate synchronously with the tested charger. The ratio (%) of the electrical energy value represented by the last word (or the minimum graduation) of display of the tested charger TO the accumulated E' shall not be greater than 1/10 of the class index of the tested charger. 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 charger, it shall carry out the determination twice again; and take the average of the determination data to calculate the operating error of the tested charger. 9.4 Determination of indication error The current circuits of the tested charger and the verification equipment are connected in series; the voltage circuits are connected in parallel; and the maximum load is applied for a period of time. After stopping the operation, the indication error γ (%) of the tested charger is calculated according to the equation (4). Where. E′ - The difference between the electrical energy indication at charging cut-off and at the start of charging of the tested charger, 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. When verifying, the verification equipment shall operate synchronously with the tested charger. The ratio (%) of the electrical energy value represented by the Where. T′ - Displayed time of tested charger, s; T - Displayed time of standard clock tester, s. The test results shall conform to the requirements of 5.4. 10 Verification result processing and verification period 10.1 Verification result processing 10.1.1 The judgment of all data is based on the rounding data. 10.1.2 The operating error and the indication error have a rounding interval of 1/10 of accuracy class of charger. 10.1.3 The minimum pay variable and the amount payable have a rounding interval of 0.01 yuan. The pay amount error has a rounding interval of 0.01 yuan. The rounding interval of the clock indication error is 1 s. If the minimum pay variable is less than 0.01 yuan, then the minimum pay variable is 0.01 yuan. 10.1.4 Rounding method for measured data 10.1.4.1 The rounding method when the number of rounding interval is 1. For the digit 1 of reserved bit, if the right side of the reserved bit is greater than 0.5, then the reserved bit is added by 1. If it is less than 0.5, then the reserved bit remains unchanged. If equal to 0.5, the reserved bit remains unchanged when it is even; the reserved bit is added by 1 when it is odd. Note. “Reserved bit” refers to the digit of the bit corresponding to the rounding interval, which is called “reserved bit”. 10.1.4.2 The rounding method when the number of rounding interval is n (n≠1). DIVIDE the measured data by n; and ROUND the result according to the rounding method of 10.1.4.1; after rounding off, MULTIPLY by n for the final rounding result. 10.1.5 If all items conform to the requirements, it is judged as qualified, otherwise it is judged as unqualified. Certified chargers shall be issued with verification certificates, and the certification marks shall be affixed to the Appendix A Format of verification original record of charger Verification original record of off-board charger 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 class. Connection mode. Voltage. Current. Constant. Technical base. Temperature. °C Relative humidity. % Supply voltage. V Frequency. Hz Verification place. Names of standards Model Equipment No. Verification/calibration certificate No. Expiration date Accuracy class 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 Operating error/% Temperature corrected value. e= Error 1 Error 2 Average Result 4. Indication error □Qualified/□Unqualified ......

Similar standards: JJF 1149-2014  JJG 1148-2022  JJG 1184-2022  
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