Some standard content:
National Metrology Verification Regulation of the People's Republic of China JJG 596-1999
Electrical Energy Meters with Electronies1999-10-21Promulgated
Implementation on 2000-03-15
Promulgated by the State Administration of Quality and Technical Supervision
JFG 596—1999
Verification Regulation of Electronic Energy Meters
Verification Regulation of FlectricalFnergyMctcrswithElcetrnnics
JIG 596—1999
Replaces JJG 596--1989
This regulation was approved by the State Administration of Quality and Technical Supervision on October 21, 1999, and came into effect on March 15, 2000.
Responsible unit: National AC Electricity Measurement Technical Committee Drafting unit: Qianning Provincial Quality Inspection Institute Participating drafting unit: Shenyang Electric Power Measurement Institute Haishi Measurement Testing Technology Research Institute
Zhejiang Haiyan Electric Power Meter Factory
This regulation is entrusted to the National AC Electricity Basic Measurement Reform Technical Committee, which shall be responsible for the interpretation of this regulation. Main drafter:
Yahiko Yu
Participating drafter:
Yue Shenyu
Wang Beihao
Ku Qikang
I.TG: 596-—1999
(Liaoning Quality Metrology and Measurement Research Institute)
(Ningbo Quality and Super Quality Inspection Research Institute)
(Xiyang Electric Power Measurement and Measurement Institute)
(Shanghai Measurement and Measurement Technology Research Institute)
(Zhejiang Haiyan Electric Power Meter Factory)
1: Technical requirements
1.1 Appearance
1.2 Basic error
1.3 Output and display
Start, run and stop
1.6 High short withstand voltage and insulation resistance
1.7 Repeatability of measurement
Daily timing error and time period error
Indication error
Measurement cycle recognition error
2 Setting conditions,
.I3G 596—1999
2.1 Basic conditions for calibrating electric energy meters 2.2 Determination of basic error of electric energy measurement equipment 2.3 Accuracy of standard clocks 2.4 Calibration conditions for measuring error 3 Specification items 3.1 Calibration of standard electric energy meters 3.2 Calibration items for installed electric energy meters 4 Calibration methods 4.1 Power frequency 4.2 Observation and power-on test 4.3 Start, run and stop test 4.4 Verification of meter indication 4.5 Determination of basic error of electric energy measurement 4.6 Determination of estimated value of standard deviation of electric energy measurement 4.7 Determination of 24h variation of electric energy measurement 4.8 Determination of error parameter of 8h continuous operation 4.9 Determination of indication error 4.11 Determination of timing error and time-linked cutting error 5 Handling of verification results and verification period 5.1 Handling of verification results 5.2 Verification period Appendix A Verification wiring diagram Appendix B Method of measurement data integration J3G 596—1999
Appendix "Verification Certificate" and "Verification Notice" of Standard Electric Energy Meter on the Back 3
JJG596—1999
Verification Procedure for Electronic Electric Energy Meters
This procedure is applicable to the verification of electronic electric energy meters (hereinafter referred to as electric energy meters) with a rated frequency of dynamic or 601z, which use the characteristics of electronic components to measure AC active electric energy. These electric energy meters include standard electric energy meters and installed wide-angle electric energy meters. This regulation is not applicable to the verification of inductive energy meters. 1 Technical requirements
1.1 Appearance
The markings on the inspected energy meter shall comply with the provisions of national standards or relevant technical specifications, and at least include the following contents: Factory name: Equipment manufacturing license name and number; Factory terminal number: Accuracy grade: Number of pulses: Rated voltage: Basic current Rated maximum current: 1.2 Basic error
1.2.1 Basic error is expressed as a percentage of the error: Under the circumstances specified in 2.1 of this regulation, the basic error limit value of the energy meter [referred to as the basic error limit] shall not exceed the provisions of Tables 1 to 4. Table 1 Basic error limits of single-phase and three-phase (balanced load) standard energy decay Load current 0.11--1mx User-specific requirements 0.5Fh-Trak U.5Ib--Imx When using special requirements Power factor 0.5S(L):0.8(C) 0.5(1):0.8tt0.5iL);0.8(C) t||0.5(1):0.8C)
Metal: 1----Basic current, F broken energy meter has the same current value: L-represents inductive load;
C represents capacitive load;
Rated current:
Basic recognition limit (%!
The difference between type A and type B is that there are no basic reading requirements. 1
The energy efficiency of the point-to-point multifunctional towel can be obtained. 2
Load current
U.5Ib--Jmzx|| tt||JJG596·1999
Basic error limits of three-phase standard electric energy meters when unbalanced load
Basic error limits (%)
7 Half-balanced negative means that under normal three-phase and positive conditions, there may be current in the circuit, and the remainder is the flow rate of the element current; the power number refers to the current on the component with the current in the empty space: Table 3
Basic error limits of single-phase and three-phase (balanced) installed electric energy meters preload current
D.01To.05 T
0.021<0.051
When the user has special requirements*
oss..th?
0.05110.11m
0.111<0.21
When the user has special requirements
efficiency factor
*1.0 is 0.1%.
Basic error limit (%)
Through mutual corrosion device
According to the meter
With controlled connection and
Multiple energy attenuation
JJG 596—1999
Table 4 Basic error of three-phase installed watt-hour meter when unbalanced load current
O.DS ts *T.
0.11 sa.lmx
rate
main,
H basic error plan
1.2.2 During the inspection period, the basic error value of the electric energy meter shall not exceed the absolute value of the basic error limit of the absolute value of the basic error variable of the electric energy meter during the inspection period. 1.2.3 The absolute value of the basic error variable of the standard electric energy meter within 24h shall not exceed the absolute value of the basic setting limit. 1/5.
1.2.4 Starting from the time of heating, the standard electric energy meter shall work continuously for 18 hours, and the basic error limit shall not be exceeded. The absolute value of the basic error change shall not exceed the absolute value of the basic error change specified in Table 5: 1.3 Output and small
1.3.1 Standard electric energy meter shall be equipped with high-frequency pulse display, and may also have high-frequency and low-frequency pulse output. ：High and low frequency pulses should be rectangular waves of certain amplitude, and the high and low frequency pulses should be output with constants (u(w+) and wh, respectively, and the display should be consistent with the electric energy represented by the input. 1.3.1.1 For standard electric energy meters of all levels, when the rated power is taken, the high frequency pulse frequency F (Hz) shall not exceed the provisions of Table 6.
Table 6 High frequency pulse frequency F-value of standard electric energy transformer at rated input power
FH minimum value (Hz)
1.3.1.2 The number of displayed digits of the display of standard electric energy meters of all levels and the resolution of the display error shall not exceed the provisions of Table 7.
JTG596:1990
Lists the number of digits of the standard electric energy meter display and the resolution of the error of the meter under test. Standard electric energy installation accuracy level
Ding small corresponding electric energy disease for the minimum display digit display error resolution car
1.3.2 The installed electric energy meter shall have electric energy value (kW output) display and shall have a pulse output for measuring the reading error. Give a pulse constant [P/kW-h). Make the display and output pulse consistent with the punctuation on the nameplate. 1.3.3 The display of the energy meter shall be able to reset. When it is automatically reset (automatically switching the display content), the display time of each value shall not be less than 3
Note! tWho can show the pulse technology:
Accuracy can be low:
P—The pulse of the self-energy meter is narrow,
1.4 Control:
There should be a receiving control pulse (time pulse) in the standard relay energy meter (or display) to control the start and stop of the required energy. 1.5 Start, run and stop
1.5.1 Under the conditions of reference voltage, reference frequency and power flash number of 1, when the load current does not exceed the specifications of Table 8, the single-phase standard energy should be started and accumulated. The installation document energy should have a pulse output or represent the power Table 8 Electricity meter starting voltage reaches the level of accuracy of automatic intermediate current. 0.001 (.0011) Note: ".0011) The meter has been connected to the applicable level through five devices. 0.5 level 1.5.2 The voltage circuit captures the reference voltage. When there is no current in the current circuit, the meter-type energy meter generates a pulse under the starting current. Within 10 seconds, the output of the measuring unit should not exceed 1 pulse. 1.5.3 When the energy meter stops counting by other methods, the energy display number should be stable and change slightly. 1. 6 Power frequency voltage and insulation voltage
1.6.1 The power meter should be able to withstand a test of 50Hz actual sinusoidal AC voltage of 2kV (effective value) for 1min at room temperature and relative humidity of air not exceeding 0%, between the voltage terminal, current terminal and auxiliary line terminal with reference voltage greater than 40V to the housing and the accessible metal parts outside the housing. 1.6.2 The standard power meter should be able to withstand a test of 50Hz actual sinusoidal AC voltage of 2kV (effective value) for 1min at room temperature and relative humidity not exceeding 0%, between the input terminal and auxiliary line terminal to the housing (or the grounding terminal connected to the housing), and between the input terminal and the auxiliary line terminal to the auxiliary line terminal. The insulation resistance of the power terminal should not be less than 100M1. 1. In the measurement of JJC596-1999, for each reference point, the standard deviation estimate (weak) calculated according to the test result shall not exceed the provisions of Table 9 for the next measurement: Table 9 Standard deviation estimate of standard electric energy meter n.02 level current item current item current item current item 0.1Ig-- I
0.21,~ I.
1.8 Timing error and time-destruction switching error
Multi-function installed energy meter (including complex rate meter), daily timing error should not exceed 0.5s/d, time switching error should not exceed 5min, and should be signed with detection positions for convenient detection of daily timing error and time switching error (the difference between the start or end time of any preset time period and the actual time is referred to as the time switching error, and its allowable value includes the accumulated daily time error and time preset error).
1.9 Demand indication error
Multi-function installed energy meter, demand indication error is expressed as relative error. When the reference voltage, reference rated voltage, ss=1,0, when I=0,1[h～Iw, its demand error (maximum) should not be greater than the specified accuracy value. 1.10 Demand cycle error
The demand cycle error of the multifunctional installed energy meter shall not exceed 1% of the demand period. The necessary information for testing shall be given when the demand is changed.
2 Verification conditions
2.1 What are the basic conditions that an energy meter should meet? .1.1 Given the standard conditions for energy meters of various levels and their allowable deviations not exceeding the provisions of special 1, the accuracy level of the meter under test shall be close to the requirements of JJG 596-1999 standard specifications and their allowable deviations, position and energy strength.
2.1.2 No perceptible vibration
±05%
±05'6
Waveform distortion is not greater than
Not greater than 0.025 n1
According to the manufacturer's requirements
2.1.3 No strong electromagnetic interference, electric sparks, radiation frequency, etc. 1.0
2.1.4 When calibrating three-phase electric energy meters, the phase sequence of the two-phase electricity and current shall comply with the provisions of the wiring diagram, the three-phase voltage and current system shall be basically symmetrical, and the symmetry program library shall comply with the provisions of Table 12. Table 12. Symmetry of three-phase voltage and current measurement system Accuracy level of the meter under test The difference between the positive average value of each phase (load) and the positive average value of each phase current shall not exceed (%) Level 0.02 Level 0.05 Accuracy level of the meter under test The difference between the phase difference between the current and the corresponding return voltage and the phase leakage and the corresponding voltage shall not exceed 0.02% Level 12. Symmetry of three-phase voltage and current measurement system Accuracy level of the meter under test The difference between the positive average value of each phase (load) and the positive average value of each phase current shall not exceed (%) Level 12. Symmetry of three-phase voltage and current measurement system Accuracy level of the meter under test The difference between the phase difference between the current and the corresponding return voltage and the phase leakage and the corresponding voltage shall not exceed 0.02% Level 12. 596—1999
Capsule 12 (thread)
0.05 level 0.1 level
The following is the number of sub-average phase methods for the three-phase series (the current of each phase): X×100
or medium: K,
any--phase (line) scale or current "i-, h, r); grid (mean) or current average position:
X1 XbI x
2donate (line) F current type:
一=余，中，this road -，中一丸湖干文三想式包尚电医滋前子电资主位 some positive position, traditional Chinese medicine Xie is about the speed when science is negative: 2.2 Determination of the basic error of energy measurement calibration device 2.2.1 When using the "watt-second method" or "standard clothing method" to calibrate the electric energy meter, the calibration device used shall not exceed the requirements of Table 13 and Table 1.1 for the measurement error and evaluation of the standard deviation of the measurement repeatability of the electric energy. Table 13 Permissible measurement error for specified devices [%] Applicable as specified power level Test device Discharge level Power rating .5 (1.0) Applicable, special requirements for uneven loads 1,0 and U.5 (L) ±0, [2] Permissible measurement error6 Power frequency voltage and insulation voltage
1.6.1 The power transformer, under room temperature and relative air humidity not exceeding 0%, shall be able to withstand a test of an actual sinusoidal AC voltage of 2kV (effective value) with a frequency of 50Hz for 1min between the voltage terminal, current terminal and auxiliary line terminal with a reference voltage greater than 40V to the casing and the accessible metal parts outside the casing. 1.6.2 Within the allowable temperature range and under the condition of relative humidity not less than 0%, the insulation resistance of the input terminal and the auxiliary current terminal to the housing (or the grounding terminal connected to the housing), and the insulation resistance of the input terminal to the auxiliary power terminal shall not be less than 100M1. 1. Measurement complexity JJC596-1999 Standard energy meter, under reference voltage and reference frequency, for each reference point, the standard deviation estimate (weak) calculated according to the test result shall not exceed the provisions of Table 9 for dynamic meters: Table 9 Standard deviation estimate of standard energy meter n.02 Class current Standard deviation estimate of installed energy meter (aggregate) Plant current O.1Ig-- I 0.21,~ I.
1.8 Timing error and time switching error
Multifunctional installed energy meter (including multi-rate meter), daily timing error should not exceed 0.5s/d, time switching error should not exceed 5min, and should be signed with detection positions for convenient detection of daily timing error and time switching error (the difference between the start or end time of any preset time period and the actual time is referred to as the time switching error, and its allowable value includes the accumulated daily time error and time preset error).
1.9 Demand indication error
Multifunctional installed energy meter, demand indication error is expressed as relative error. When the reference voltage, reference rated voltage, ss=1,0, when I=0,1[h～Iw, its demand error (maximum) should not be greater than the specified accuracy value. 1.10 Demand cycle error
The demand cycle error of the multifunctional installed energy meter should not exceed 1 of the demand period. When it is necessary to provide the necessary information for testing.
2 Verification conditions
2.1 What are the basic conditions that the electric energy meter should have? .1.1 Given the standard conditions for energy meters of various levels and their allowable deviations not exceeding the provisions of special 1, the accuracy level of the meter under test shall be close to the requirements of JJG 596-1999 standard specifications and their allowable deviations, position and energy strength.
2.1.2 No perceptible vibration
±05%
±05'6
Waveform distortion is not greater than
Not greater than 0.025 n1
According to the manufacturer's requirements
2.1.3 No strong electromagnetic interference, electric sparks, radiation frequency, etc. 1.0
2.1.4 When calibrating three-phase electric energy meters, the phase sequence of the two-phase electricity and current shall comply with the provisions of the wiring diagram, the three-phase voltage and current system shall be basically symmetrical, and the symmetry program library shall comply with the provisions of Table 12. Table 12. Symmetry of three-phase voltage and current measurement system Accuracy level of the meter under test The difference between the positive average value of each phase (load) and the positive average value of each phase current shall not exceed (%) Level 0.02 Level 0.05 Accuracy level of the meter under test The difference between the phase difference between the current and the corresponding return voltage and the phase leakage and the corresponding voltage shall not exceed 0.02% Level 12. Symmetry of three-phase voltage and current measurement system Accuracy level of the meter under test The difference between the positive average value of each phase (load) and the positive average value of each phase current shall not exceed (%) Level 12. Symmetry of three-phase voltage and current measurement system Accuracy level of the meter under test The difference between the phase difference between the current and the corresponding return voltage and the phase leakage and the corresponding voltage shall not exceed 0.02% Level 12. 596—1999
Capsule 12 (thread)
0.05 level 0.1 level
The following is the number of sub-average phase methods for the three-phase series (the current of each phase): X×100
or medium: K,bzxZ.net
any--phase (line) scale or current "i-, h, r); grid (mean) or current average position:
X1 XbI x
2donate (line) F current type:
一=余，中，this road -，中一丸湖干文三想式包尚电医滋前子电资主位 some positive position, traditional Chinese medicine Xie is about the speed when science is negative: 2.2 Determination of the basic error of energy measurement calibration device 2.2.1 When using the "watt-second method" or "standard clothing method" to calibrate the electric energy meter, the calibration device used shall not exceed the requirements of Table 13 and Table 1.1 for the measurement error and evaluation of the standard deviation of the measurement repeatability of the electric energy. Table 13 Permissible measurement error for specified devices [%] Applicable as specified power level Test device Discharge level Power rating .5 (1.0) Applicable, special requirements for uneven loads 1,0 and U.5 (L) ±0, [2] Permissible measurement error6 Power frequency voltage and insulation voltage
1.6.1 The power transformer, under room temperature and relative air humidity not exceeding 0%, shall be able to withstand a test of an actual sinusoidal AC voltage of 2kV (effective value) with a frequency of 50Hz for 1min between the voltage terminal, current terminal and auxiliary line terminal with a reference voltage greater than 40V to the casing and the accessible metal parts outside the casing. 1.6.2 Within the allowable temperature range and under the condition of relative humidity not less than 0%, the insulation resistance of the input terminal and the auxiliary current terminal to the housing (or the grounding terminal connected to the housing), and the insulation resistance of the input terminal to the auxiliary power terminal shall not be less than 100M1. 1. Measurement complexity JJC596-1999 Standard energy meter, under reference voltage and reference frequency, for each reference point, the standard deviation estimate (weak) calculated according to the test result shall not exceed the provisions of Table 9 for dynamic meters: Table 9 Standard deviation estimate of standard energy meter n.02 Class current Standard deviation estimate of installed energy meter (aggregate) Plant current O.1Ig-- I 0.21,~ I.
1.8 Timing error and time switching error
Multifunctional installed energy meter (including multi-rate meter), daily timing error should not exceed 0.5s/d, time switching error should not exceed 5min, and should be signed with detection positions for convenient detection of daily timing error and time switching error (the difference between the start or end time of any preset time period and the actual time is referred to as the time switching error, and its allowable value includes the accumulated daily time error and time preset error).
1.9 Demand indication error
Multifunctional installed energy meter, demand indication error is expressed as relative error. When the reference voltage, reference rated voltage, ss=1,0, when I=0,1[h～Iw, its demand error (maximum) should not be greater than the specified accuracy value. 1.10 Demand cycle error
The demand cycle error of the multifunctional installed energy meter should not exceed 1 of the demand period. When it is necessary to provide the necessary information for testing.
2 Verification conditions
2.1 What are the basic conditions that the electric energy meter should have? .1.1 Given the standard conditions for energy meters of various levels and their allowable deviations not exceeding the provisions of special 1, the accuracy level of the meter under test shall be close to the requirements of JJG 596-1999 standard specifications and their allowable deviations, position and energy strength.
2.1.2 No perceptible vibration
±05%
±05'6
Waveform distortion is not greater than
Not greater than 0.025 n1
According to the manufacturer's requirements
2.1.3 No strong electromagnetic interference, electric sparks, radiation frequency, etc. 1.0
2.1.4 When calibrating three-phase electric energy meters, the phase sequence of the two-phase electricity and current shall comply with the provisions of the wiring diagram, the three-phase voltage and current system shall be basically symmetrical, and the symmetry program library shall comply with the provisions of Table 12. Table 12. Symmetry of three-phase voltage and current measurement system Accuracy level of the meter under test The difference between the positive average value of each phase (load) and the positive average value of each phase current shall not exceed (%) Level 0.02 Level 0.05 Accuracy level of the meter under test The difference between the phase difference between the current and the corresponding return voltage and the phase leakage and the corresponding voltage shall not exceed 0.02% Level 12. Symmetry of three-phase voltage and current measurement system Accuracy level of the meter under test The difference between the positive average value of each phase (load) and the positive average value of each phase current shall not exceed (%) Level 12. Symmetry of three-phase voltage and current measurement system Accuracy level of the meter under test The difference between the phase difference between the current and the corresponding return voltage and the phase leakage and the corresponding voltage shall not exceed 0.02% Level 12. 596—1999
Capsule 12 (thread)
0.05 level 0.1 level
The following is the number of sub-average phase methods for the three-phase series (the current of each phase): X×100
or medium: K,
any--phase (line) scale or current "i-, h, r); grid (mean) or current average position:
X1 XbI x
2donate (line) F current type:
一=余，中，this road -，中一丸湖干文三想式包尚电医滋前子电资主位 some positive position, traditional Chinese medicine Xie is about the speed when science is negative: 2.2 Determination of the basic error of energy measurement calibration device 2.2.1 When using the "watt-second method" or "standard clothing method" to calibrate the electric energy meter, the calibration device used shall not exceed the requirements of Table 13 and Table 1.1 for the measurement error and evaluation of the standard deviation of the measurement repeatability of the electric energy. Table 13 Permissible measurement error for specified devices [%] Applicable as specified power level Test device Discharge level Power rating .5 (1.0) Applicable, special requirements for uneven loads 1,0 and U.5 (L) ±0, [2] Permissible measurement error4 When calibrating three-phase electric energy meters, the phase sequence of the two-phase current should comply with the wiring diagram, the three-phase voltage and current system should be basically symmetrical, and the symmetry code should be in accordance with the provisions of Table 12. Table 12, Symmetry of three-phase voltage and current system Accuracy level of the meter under test The difference between the positive average value of each phase (load) and the positive average value of each phase current should not exceed (%) 0.02 level 0.05 level Accuracy level of the meter under test The difference between the phase difference between the phase leakage and the corresponding voltage should not exceed 0.02% 596—1999
Capsule 12 (thread)
0.05 level 0.1 level
The following is the number of sub-average phase methods for the three-phase series (the current of each phase): X×100
or medium: K,
any--phase (line) scale or current "i-, h, r); grid (mean) or current average position:
X1 XbI x
2donate (line) F current type:
一=余，中，this road -，中一丸湖干文三想式包尚电医滋前子电资主位 some positive position, traditional Chinese medicine Xie is about the speed when science is negative: 2.2 Determination of the basic error of energy measurement calibration device 2.2.1 When using the "watt-second method" or "standard clothing method" to calibrate the electric energy meter, the calibration device used shall not exceed the requirements of Table 13 and Table 1.1 for the measurement error and evaluation of the standard deviation of the measurement repeatability of the electric energy. Table 13 Permissible measurement error for specified devices [%] Applicable as specified power level Test device Discharge level Power rating .5 (1.0) Applicable, special requirements for uneven loads 1,0 and U.5 (L) ±0, [2] Permissible measurement error4 When calibrating three-phase electric energy meters, the phase sequence of the two-phase current should comply with the wiring diagram, the three-phase voltage and current system should be basically symmetrical, and the symmetry code should be in accordance with the provisions of Table 12. Table 12, Symmetry of three-phase voltage and current system Accuracy level of the meter under test The difference between the positive average value of each phase (load) and the positive average value of each phase current should not exceed (%) 0.02 level 0.05 level Accuracy level of the meter under test The difference between the phase difference between the phase leakage and the corresponding voltage should not exceed 0.02% 596—1999
Capsule 12 (thread)
0.05 level 0.1 level
The following is the number of sub-average phase methods for the three-phase series (the current of each phase): X×100
or medium: K,
any--phase (line) scale or current "i-, h, r); grid (mean) or current average position:
X1 XbI x
2donate (line) F current type:
一=余，中，this road -，中一丸湖干文三想式包尚电医滋前子电资主位 some positive position, traditional Chinese medicine Xie is about the speed when science is negative: 2.2 Determination of the basic error of energy measurement calibration device 2.2.1 When using the "watt-second method" or "standard clothing method" to calibrate the electric energy meter, the calibration device used shall not exceed the requirements of Table 13 and Table 1.1 for the measurement error and evaluation of the standard deviation of the measurement repeatability of the electric energy. Table 13 Permissible measurement error for specified devices [%] Applicable as specified power level Test device Discharge level Power rating .5 (1.0) Applicable, special requirements for uneven loads 1,0 and U.5 (L) ±0, [2] Permissible measurement error
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