JB/T 9843-1999 Electromagnetic ammeter for tractors and internal combustion engines
Some standard content:
ICS65.060.10
Machinery Industry Standard of the People's Republic of China
JB7r9843—1999
Electromagoetic ammeter for tractors and internal combustion engines1999-08-06 Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JB/T9843-1999
This standard is a revision of 2168003-90 Magnetic ammeter for tractors and internal combustion engines. The revision is an editorial modification to the original standard, and the technical content is changed. This standard replaces ZBT68003—90 from the date of implementation. This standard is proposed and proposed by the National Technical Committee for Standardization of Tractors and Internal Combustion Engines. The drafting unit of this standard is: China Tractor Research Institute. The main drafter of this standard! Chen Jiagu,
Machinery Industry Standard of the People's Republic of China
Electromagnetle ammeter for tractors and internal combustion engines Electromagnetle ammeter for tractors and internal combustion engines J/T9843—1999
ZRT6R(M03-G
This standard specifies the product classification, technical requirements, test piece method, verification rules, marking, packaging, transportation and storage of electromagnetic ammeters for tractors and internal combustion engines.
This standard applies to ammeters for indicating the charging and discharging status of batteries installed on tractors and internal combustion engines (hereinafter referred to as ammeters) 2 Referenced Standards
The provisions contained in the following standards shall be cited in this standard and constitute the provisions of the above standards. When this standard is published, The version shown is valid: All standards are subject to revision. In case of waiver of this standard, the possibility of using the latest version of the following standards shall be explored: GB/T 2423.4-1W3
Shanghai Electric Electronic Products Environmental Test Specification Test Db: Cyclic Humidity Test Piece Method GB/T 2423.16-1990 Electric Electronic Products Environmental Test Specification Test 1: Length Test Method GB/T 2423.17-1993 Electric and Electronic Products Environmental Test Specification Test Xa: Salt Bomb Test GB/T 2826-1987
GB/T 4942.2—[993
3 Product classification
Batch inspection, counting, sampling procedures and sampling attenuation (applicable to inspection of subsequent batches) Protection level of low-voltage electrical appliances
3.1 The structure is of isolating type. According to the requirements of use, it is divided into ordinary type and mixed type (the following ones are all ordinary types) 3.2 The measurement range of the ammeter shall comply with the provisions of Table 1, A
The test range is
-20-20
-30-130
3.3 The structural size of the ammeter shall be reduced in accordance with the provisions of Table 2. 53
Guohao Machinery Industry Bureau 1999-08-06 approved table 2
-40--40
-64-+0
2000-01-01 implementation
d technical requirements
E/9843-1999
Industry electric elements should be approved by the specified program and the product drawings and technical support parts are produced. 4.2 Metering units and divisions
4.2.1 Metering units of electric meters: A.
4.2.2 Within the scope of the electric meter measurement, there shall be no less than five divisions on the dial: "upper limit value", "middle value", zero point, "+" interval, "+" upper limit value. The smaller "element is required for the effect, "+" meter is required for electric. 4.3 Standard environment conditions The parts shall meet the requirements of Table 3. The working environment conditions in Table 3 shall meet the requirements of Table 4. 4.5 Working position and error % 60 ±15 The angle between the surface glue and the water half surface of the thin surface is 303-40° 4.6 External installation 4.6.1 The core sealing ring shall be installed evenly 4.6.2 The protection shall be even, without obvious bubbles, ripe spots, rust and detachment defects. 4.6.3 The transparent materials shall not be damaged or have defects that will affect the number of 4.6.4 The engraved lines, numbers and other signs shall be clear and transparent: 4.5 The exposed part of the bottom has a glaring luster. Atmospheric pressure kPa 96 ±10
Relative humidity %
4.6.6 The pointer should be straight, the indicating end should be within the range of 1-3 meters, and the pointer track should be within the zero line
4.6. ? Check the firmness of the assembly at all times, and the fasteners should not have any looseness. Parts should not have cracks and defects that affect the performance. 4.7 Paint layer
JB/T9843—1999
In addition to meeting 4.6.2, the coating must be firm and tested by temperature influence After the test, there shall be no shrinkage or peeling. After the wet heat type ammeter is subjected to the variable humidity test, the primer shall not fall off, and the topcoat shall not fall off more than 3 squares. 4.8
In addition to meeting the requirements of 4.6.2, the coating surface shall be smooth and the coating shall be durable. After the wet heat type ammeter is subjected to the alternating humidity test, the coating surface shall not be corroded. 4.9 Performance
4.9.1 Pointer deflection performance
The pointer of the current meter shall be flat. When the current is stable, the pointer shall move smoothly without jumping or stopping. 4.9.2 Basic error
The basic error of the ammeter is the sum of the two upper limits ±7.5% on all graduation lines of the lower part of the dial. 4.9. 3 Damping
The damping time of the ammeter pointer should not exceed 3t4.9.4 Overload
The ammeter with an upper limit of less than 50A on the dial should be able to withstand the test of 3 times the upper limit current; the ammeter with a dial value equal to or greater than 50A should be able to withstand the test of twice its upper limit. After the test, it should comply with the provisions of 4.9.1 and 4.9.2. 4.9.5 Withstand voltage
The meter can be tested with a frequency of 50Fz, an actual sine wave voltage of 550V, and a duration of 1mm. There is no breakdown or damage in the test. 4.6 Temperature influence
The meter is subjected to the impedance influence test according to the working environment temperature range. The absolute value of the change in the indication caused by this should not exceed 5% of the sum of the absolute values of the two upper limits on the dial. After the test, it meets the provisions of 4.7, 4.9.1 and 4.9.2. 4.9. 7 Vibration resistance The instrument should be able to withstand the fixed frequency vibration test in accordance with the test parameters in Table 5 and the gentle frequency vibration test in Table 6. After the test, the instrument shall meet the requirements of 4.6.7 and 4.9.1. The absolute value of the change in the minimum value relative to the absolute value before the test shall not exceed about 5% of the sum of the upper and lower limits of the dial. 4.9.8 Dustproof Acceleration 17-6H., n.35mm 6j-200Hz, 43m/s flow meter can prevent splashing from all directions, and water shall not flow into the interior. 4.9.9 Waterproof Current attenuation The instrument should be able to withstand splashing from all directions, and water shall not flow into the interior. Test time: h,
Sweep procedure
4.9.10 Performance
JB/T 9843-1999
The ammeter shall be able to withstand 30,000 current cycle changes. After the test, it shall comply with the provisions of 4.6.7 and 4.9.1, and the absolute value of the change in its indication shall not exceed 5% of the sum of the absolute values of the two upper limits of the dial compared to before the test. 4.9.[1 Alternating potential
The heat filter type ammeter shall be able to withstand a full-scale heat test at a high overflow temperature of 40℃ for 6 cycles. After the test, it shall comply with the requirements of 4.6.7, 4.7, 4.8, 4.9.1 and 4.9.2.
4.9.12 Salt resistance
The damp heat type ammeter shall be able to withstand a salt test for 16 hours. After the test, it shall comply with the requirements of 4.9.1 to 4.9.2. 4.9.13 The thermal insulation type electric decay protection has a certain degree of protection capability. The exposed current shall not exceed 50% of the surface area of the part after 2000 hours of zero test. 4.9.14 Warranty period: Within one year from the date of export, if the ammeter is damaged or cannot be operated normally due to poor manufacturing, the manufacturer shall be responsible for free repair or replacement. 5 Test method 5.1 Test parts 5.1.1 The current indication value inspection shall be carried out under the standard environmental conditions specified in 4.3. 5.1.2 The installation of the ammeter shall comply with the provisions of 4.5. 5.2 Test instruments and equipment 5.2.1 The accuracy level of the standard ammeter shall not be lower than 1.0 level, 5.2.2 In the withstand voltage test equipment, the transformer capacity is less than 0.5kw. 5.3 Appearance inspection
Under the average light intensity of about 3001x, check with a wire at a distance of 50mm. 5.4 Paint layer inspection
5.4.1 Layer appearance 5.1 Inspection
5.4.7 Continuous layer adhesion test by acid grid method: that is, in a standard environment, the old surface of the current meter paint layer that has been dried is scratched with a new No. 1 or No. 12 tool for 4 vertical and horizontal strokes, with a spacing of 1 meter between each stroke, forming 9 small squares, and inspecting the paint layer in the squares. 5.4.3 The anti-reflective performance of the rub is tested after the temperature influence test. 5.4.4 Alternating damp heat energy test after the alternating damp heat test 5.5 Sharpness test
5.5.1 Plating transmission connection 5.3 Shuttle test
5.5.2 Alternating damp heat energy test piece test 5.6 Basic error test
First check the half balance of the pointer. When the meter is inclined 9 degrees between the left and right sides according to the working position, the axis of the pointer should be within the lower dividing line. Then use the force method to compare with the standard ammeter. First check the "2" and then "_". The dividing line marked with numbers is the standard measuring point.
5.7 Deflection stability test
Observe in the test of 5.6
5. Self-damping test
JB/T9843—1999
The time taken for the needle of the rising current meter to return from the power failure at the upper limit value of the dial to the time when it stops. Take the average value of the time measured in 3 tests
5.9 Overload test
Connect the ammeter to the current value of 3 (or 2) of the upper limit value of the dial, and after 19, the test current will only escape in one direction. Test 5 is followed by the inspection in 5.6 and 5.7.
5.10 Withstand voltage test
In the test environment specified in 4.1, the test voltage specified in 4.1 is applied between the ammeter circuit and the external device. During the test, the applied voltage starts from more than half of the full value of the test voltage, rises uniformly from about 1m to the full value, and is maintained for 1m0, and then drops uniformly. The rise and fall time is 10s.
5.11 Test
The current value is tested in a standard environment. Then put the ammeter into the low-temperature (and high-temperature) box, keep it warm for 2 hours as the box cools down [and heats up] to 40±3℃ (and 70℃±2℃), and then check its water value. From this, the difference between the low-temperature (and high-temperature) indication and the standard ambient temperature is obtained. After the test, the ammeter is placed in the environment for 4 hours, and then tested in 5.4, 5.6 and 5.1. 5.12 Vibration test
Fix the ammeter on the test plate, and pass a current of 1/100% of the upper limit of the dial (the first half of the test is passed with "forward current", and the second half is passed with "same current") in the reverse vibration test. Perturbation The vibration waveform of the test bench is a sine wave, and the distortion of the acceleration waveform should not exceed 25%. The test is carried out continuously, and the frequency changes exponentially with time. The frequency tolerance is: ±1-111 for 5-50Hz; ±2% for more than 50Hz. During the test, the fixed frequency vibration is performed first, followed by the sweep vibration. After the test, the ammeter is placed in a standard environment for 4 hours, and then the second type of the reduced test method a of [P5X in GB/T4942.2 is performed according to 5.3, 3.6 and 5.7. 14 Waterproof test
Perform the test method and system of X in B State 2 5.15 Durability test
On the test bench, give the ammeter an output current of 13 above the upper limit, at a rate of 0.017-0.08Hz, dial the dial from "+ upper limit value 13-0" to "upper limit value 13-0" for alternating test, and the test piece is calibrated again in 5.3, 5.6 and 5.7 5.16 Humidity test
Perform the provisions of GB/T2423.4. After the test, the ammeter is placed in a standard environment After 2 hours of placement, check according to 5.3~5.7. 5.17 Salt penetration test
Perform according to GB/T 2423.17. The test duration is 16 hours. After the test, place in the standard environment for 2 hours and then install 5.65.7 Inspection:
s.18 Long case test
Perform on representative power and components according to GBT 242316. After the test, the ammeter is taken out from the test chamber and the inspection is carried out immediately:
JB/T 9843—1990
All G According to the provisions of B/T2423.16, for parts made of materials that have undergone aging tests and whose self-growth does not exceed 50% of the area in the table, there is no need to undergo aging tests.
6 Inspection rules
6.1 Age test classification
Electric meters are divided into factory inspection and type inspection: 6.2 Factory inspection
Electric meters must be inspected in accordance with 4.6, 4.9.1 and 4.9.2, and only qualified pieces can be shipped. 6.3 Type inspection
Type inspection should be carried out in the following circumstances: New products should be inspected for production Product transfer! After the formal production, if there are major changes in structure, materials, and process, which may affect the product performance; during normal production, regular or accumulated production, once a year, an inspection is carried out: after a long-term suspension of production, the production is resumed, 6.3.1 Sampling piece method
6.3.1.1 According to the current normal acceptance plan specified in GBT2828, it is carried out and specified: Stock inspection level II 6.3.1.2 Building 5 batches A-2650 sets,
6.3.1.3 Sample size n=8.
6.3.1.4 The classification of unqualified is shown in Table 7.
Unqualified classification
Class A unqualified
Class II unqualified
Unqualified item name
Pointer false rotation level: Unqualified operation requirements
Basic difference technology meets the requirements
Overload activity requirements
Motion resistance requirements
Damping does not meet the requirements
Withstand voltage does not meet the requirements
Heat influence technology meets the requirements
Anti-cloud decision requirements
Water does not meet the requirements Requirements
Moisture seal does not meet the requirements
Protective layer does not meet the requirements
Period and other requirements of the original material
Supply supervision does not meet the requirements
Required parts do not meet the requirements
Assembly parts do not meet the requirements
Paint layer does not meet the requirements
Plating layer does not meet the requirements
Structural dimensions do not meet the requirements
JB/T9843-1999
The sampling plan is shown in Table 8. Ae and e show the number of unqualified samples. G.3, L, 5
Technical qualification classification
6.3.2 Implementation of sampling inspection
The sampling shall first be inspected according to Table 7 for the following items: Class C, Class A, F and 2, and then divided into four groups for separate inspections.
The first dimension is to conduct A-type 3 and 0-type 3~5 items
The second dimension is to conduct the first and second items of the oral type and A-type 4 items, the first two boxes are to conduct durability tests,
The fourth two sets are to conduct alternating cooling and hot fog tests, 6.3.3 Evaluation of sampling inspection
6.3.3.1 If the first and second groups of inspection stations and 6.3.2 both meet the requirements of Table 8, they are evaluated as qualified, otherwise they are evaluated as unqualified: 6.3.3.2 If one of the resistance to women, alternating damp heat and resistance to recruitment does not meet the requirements, it is still evaluated as unqualified. ? , marking, packaging, transportation, storage
7.1 Marking
The center of the current meter shall be marked with:
Manufacturer name, trademark and address:
b) Product number or research name;
e! Inspection mark:
d) Manufacturer's name.
7.2 Packaging
7.2.1 Each outlet meter accessory must be packaged separately before being assembled. No movable objects are allowed in the packaging box. The total weight after packing is generally not more than 40kg. 7.2.2 The outside of the packing box should be marked: a) Name and address of the receiving list: company name or model, specification number of products: e) Name and address of the shipping unit: total weight of the box: e) Note: "Fang Sheng", "Ou Qing", "Xiao Xiao Jing Fang", "Xiao Xu Huan Wei" and other words or logos, 7.2.3 Attached with the product documents in the packing: a) Product certificate: h) Product tax declaration: packing list. The ammeter should be stored in a sterile and dry air, and the indoor air should not corrode the ammeter. 7.4.2 The storage period of the ammeter is 2 hours (starting from the date of storage at the factory). During the storage period, the ammeter should comply with the provisions of the standard.4.4.1. 5.4.7. 5.4.8. 5.4.9. 5.5.1. 5.5.2. 5.6. 5.7. 5.8. 5.9. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70. 71. 72. 73. 74. 75. 76. 77. 78. 79. 80. 81. 82. 83. 84. 85. 86. 87. 88. 89. 90. 91. 92. 93. 94. 95. 96. 97 ... Then compare with the standard ammeter! Force method, first "2" and then "_". Take the scale line marked with numbers as the measurement point.
5.7 Deflection stability test
Observe in the test of 5.6
5. Self-damping test
JB/T9843—1999
The time it takes for the needle of the rising current meter to return from the power failure of the upper limit value of the dial to the time it stops. Take the average value of the time measured in 3 tests
5.9 Overload test
Connect the ammeter to the current value of 3 (or 2) of the upper limit value of the dial, and after 19, the test current will only escape to either side. Test 5 is followed by the inspection in 5.6 and 5.7.
5.10 Withstand voltage test
In the test environment specified in 4.1, the test voltage specified in 4.1 is applied between the ammeter circuit and the external device. During the test, the applied voltage starts from more than half of the full value of the test voltage, rises uniformly from about 1m to the full value, and is maintained for 1m0, and then drops uniformly. The rise and fall time is 10s.
5.11 Test
The current value is tested in a standard environment. Then put the ammeter into the low-temperature (and high-temperature) box, keep it warm for 2 hours as the box cools down [and heats up] to 40±3℃ (and 70℃±2℃), and then check its water value. From this, the difference between the low-temperature (and high-temperature) indication and the standard ambient temperature is obtained. After the test, the ammeter is placed in the environment for 4 hours, and then tested in 5.4, 5.6 and 5.1. 5.12 Vibration test
Fix the ammeter on the test plate, and pass a current of 1/100% of the upper limit of the dial (the first half of the test is passed with "forward current", and the second half is passed with "same current") in the reverse vibration test. Perturbation The vibration waveform of the test bench is a sine wave, and the distortion of the acceleration waveform should not exceed 25%. The test is carried out continuously, and the frequency changes exponentially with time. The frequency tolerance is: ±1-111 for 5-50Hz; ±2% for more than 50Hz. During the test, the fixed frequency vibration is performed first, followed by the sweep vibration. After the test, the ammeter is placed in a standard environment for 4 hours, and then the second type of the reduced test method a of [P5X in GB/T4942.2 is performed according to 5.3, 3.6 and 5.7. 14 Waterproof test
Perform the test method and system of X in B State 2 5.15 Durability test
On the test bench, give the ammeter an output current of 13 above the upper limit, at a rate of 0.017-0.08Hz, dial the dial from "+ upper limit value 13-0" to "upper limit value 13-0" for alternating test, and the test piece is calibrated again in 5.3, 5.6 and 5.7 5.16 Humidity test
Perform the provisions of GB/T2423.4. After the test, the ammeter is placed in a standard environment After 2 hours of placement, check according to 5.3~5.7. 5.17 Salt penetration test
Perform according to GB/T 2423.17. The test duration is 16 hours. After the test, place in the standard environment for 2 hours and then install 5.65.7 Inspection:
s.18 Long case test
Perform on representative power and components according to GBT 242316. After the test, the ammeter is taken out from the test chamber and the inspection is carried out immediately:
JB/T 9843—1990
All G According to the provisions of B/T2423.16, for parts made of materials that have undergone aging tests and whose self-growth does not exceed 50% of the area in the table, there is no need to undergo aging tests.
6 Inspection rules
6.1 Age test classification
Electric meters are divided into factory inspection and type inspection: 6.2 Factory inspection
Electric meters must be inspected in accordance with 4.6, 4.9.1 and 4.9.2, and only qualified pieces can be shipped. 6.3 Type inspection
Type inspection should be carried out in the following circumstances: New products should be inspected for production Product transfer! After the formal production, if there are major changes in structure, materials, and process, which may affect the product performance; during normal production, regular or accumulated production, once a year, an inspection is carried out: after a long-term suspension of production, the production is resumed, 6.3.1 Sampling piece method
6.3.1.1 According to the current normal acceptance plan specified in GBT2828, it is carried out and specified: Stock inspection level II 6.3.1.2 Building 5 batches A-2650 sets,
6.3.1.3 Sample size n=8.
6.3.1.4 The classification of unqualified is shown in Table 7.
Unqualified classification
Class A unqualified
Class II unqualified
Unqualified item name
Pointer false rotation level: Unqualified operation requirements
Basic difference technology meets the requirements
Overload activity requirements
Motion resistance requirements
Damping does not meet the requirements
Withstand voltage does not meet the requirements
Heat influence technology meets the requirements
Anti-cloud decision requirements
Water does not meet the requirements Requirements
Moisture seal does not meet the requirements
Protective layer does not meet the requirements
Period and other requirements of the original material
Supply supervision does not meet the requirements
Required parts do not meet the requirements
Assembly parts do not meet the requirements
Paint layer does not meet the requirements
Plating layer does not meet the requirements
Structural dimensions do not meet the requirements
JB/T9843-1999
The sampling plan is shown in Table 8. Ae and e show the number of unqualified samples. G.3, L, 5
Technical qualification classification
6.3.2 Implementation of sampling inspection
The sampling shall first be inspected according to Table 7 for the following items: Class C, Class A, F and 2, and then divided into four groups for separate inspections.
The first dimension is to conduct A-type 3 and 0-type 3~5 items
The second dimension is to conduct the first and second items of the oral type and A-type 4 items, the first two boxes are to conduct durability tests,
The fourth two sets are to conduct alternating cooling and hot fog tests, 6.3.3 Evaluation of sampling inspection
6.3.3.1 If the first and second groups of inspection stations and 6.3.2 both meet the requirements of Table 8, they are evaluated as qualified, otherwise they are evaluated as unqualified: 6.3.3.2 If one of the resistance to women, alternating damp heat and resistance to recruitment does not meet the requirements, it is still evaluated as unqualified. ? , marking, packaging, transportation, storage
7.1 Marking
The center of the current meter shall be marked with:
Manufacturer name, trademark and address:
b) Product number or research name;
e! Inspection mark:
d) Manufacturer's name.
7.2 Packaging
7.2.1 Each outlet meter accessory must be packaged separately before being assembled. No movable objects are allowed in the packaging box. The total weight after packing is generally not more than 40kg. 7.2.2 The outside of the packing box should be marked: a) Name and address of the receiving list: company name or model, specification number of products: e) Name and address of the shipping unit: total weight of the box: e) Note: "Fang Sheng", "Ou Qing", "Xiao Xiao Jing Fang", "Xiao Xu Huan Wei" and other words or logos, 7.2.3 Attached with the product documents in the packing: a) Product certificate: h) Product tax declaration: packing list. The ammeter should be stored in a sterile and dry air, and the indoor air should not corrode the ammeter. 7.4.2 The storage period of the ammeter is 2 hours (starting from the date of storage at the factory). During the storage period, the ammeter should comply with the provisions of the standard.4.4.1. 5.4.7. 5.4.8. 5.4.9. 5.5.1. 5.5.2. 5.6. 5.7. 5.8. 5.9. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70. 71. 72. 73. 74. 75. 76. 77. 78. 79. 80. 81. 82. 83. 84. 85. 86. 87. 88. 89. 90. 91. 92. 93. 94. 95. 96. 97 ... Then compare with the standard ammeter! Force method, first "2" and then "_". Take the scale line marked with numbers as the measurement point.
5.7 Deflection stability test
Observe in the test of 5.6
5. Self-damping test
JB/T9843—1999
The time it takes for the needle of the rising current meter to return from the power failure of the upper limit value of the dial to the time it stops. Take the average value of the time measured in 3 tests
5.9 Overload test
Connect the ammeter to the current value of 3 (or 2) of the upper limit value of the dial, and after 19, the test current will only escape to either side. Test 5 is followed by the inspection in 5.6 and 5.7.
5.10 Withstand voltage test
In the test environment specified in 4.1, the test voltage specified in 4.1 is applied between the ammeter circuit and the external device. During the test, the applied voltage starts from more than half of the full value of the test voltage, rises uniformly from about 1m to the full value, and is maintained for 1m0, and then drops uniformly. The rise and fall time is 10s.
5.11 Test
The current value is tested in a standard environment. Then put the ammeter into the low-temperature (and high-temperature) box, keep it warm for 2 hours as the box cools down [and heats up] to 40±3℃ (and 70℃±2℃), and then check its water value. From this, the difference between the low-temperature (and high-temperature) indication and the standard ambient temperature is obtained. After the test, the ammeter is placed in the environment for 4 hours, and then tested in 5.4, 5.6 and 5.1. 5.12 Vibration test
Fix the ammeter on the test plate, and pass a current of 1/100% of the upper limit of the dial (the first half of the test is passed with "forward current", and the second half is passed with "same current") in the reverse vibration test. Perturbation The vibration waveform of the test bench is a sine wave, and the distortion of the acceleration waveform should not exceed 25%. The test is carried out continuously, and the frequency changes exponentially with time. The frequency tolerance is: ±1-111 for 5-50Hz; ±2% for more than 50Hz. During the test, the fixed frequency vibration is performed first, followed by the sweep vibration. After the test, the ammeter is placed in a standard environment for 4 hours, and then the second type of the reduced test method a of [P5X in GB/T4942.2 is performed according to 5.3, 3.6 and 5.7. 14 Waterproof test
Perform the test method and system of X in B State 2 5.15 Durability test
On the test bench, give the ammeter an output current of 13 above the upper limit, at a rate of 0.017-0.08Hz, dial the dial from "+ upper limit value 13-0" to "upper limit value 13-0" for alternating test, and the test piece is calibrated again in 5.3, 5.6 and 5.7 5.16 Humidity test
Perform the provisions of GB/T2423.4. After the test, the ammeter is placed in a standard environment After 2 hours of placement, check according to 5.3~5.7. 5.17 Salt penetration test
Perform according to GB/T 2423.17. The test duration is 16 hours. After the test, place in the standard environment for 2 hours and then install 5.65.7 Inspection:
s.18 Long case test
Perform on representative power and components according to GBT 242316. After the test, the ammeter is taken out from the test chamber and the inspection is carried out immediately:
JB/T 9843—1990
All G According to the provisions of B/T2423.16, for parts made of materials that have undergone aging tests and whose self-growth does not exceed 50% of the area in the table, there is no need to undergo aging tests.
6 Inspection rules
6.1 Age test classification
Electric meters are divided into factory inspection and type inspection: 6.2 Factory inspection
Electric meters must be inspected in accordance with 4.6, 4.9.1 and 4.9.2, and only qualified pieces can be shipped. 6.3 Type inspection
Type inspection should be carried out in the following circumstances: New products should be inspected for production Product transfer! After the formal production, if there are major changes in structure, materials, and process, which may affect the product performance; during normal production, regular or accumulated production, once a year, an inspection is carried out: after a long-term suspension of production, the production is resumed, 6.3.1 Sampling piece method
6.3.1.1 According to the current normal acceptance plan specified in GBT2828, it is carried out and specified: Stock inspection level II 6.3.1.2 Building 5 batches A-2650 sets,
6.3.1.3 Sample size n=8.
6.3.1.4 The classification of unqualified is shown in Table 7.
Unqualified classification
Class A unqualified
Class II unqualified
Unqualified item name
Pointer false rotation level: Unqualified operation requirements
Basic difference technology meets the requirements
Overload activity requirements
Motion resistance requirements
Damping does not meet the requirements
Withstand voltage does not meet the requirements
Heat influence technology meets the requirements
Anti-cloud decision requirements
Water does not meet the requirements Requirements
Moisture seal does not meet the requirements
Protective layer does not meet the requirements
Period and other requirements of the original material
Supply supervision does not meet the requirements
Required parts do not meet the requirements
Assembly parts do not meet the requirements
Paint layer does not meet the requirements
Plating layer does not meet the requirements
Structural dimensions do not meet the requirements
JB/T9843-1999
The sampling plan is shown in Table 8. Ae and e show the number of unqualified samples. G.3, L, 5
Technical qualification classification
6.3.2 Implementation of sampling inspection
The sampling shall first be inspected according to Table 7 for the following items: Class C, Class A, F and 2, and then divided into four groups for separate inspections.
The first dimension is to conduct A-type 3 and 0-type 3~5 items
The second dimension is to conduct the first and second items of the oral type and A-type 4 items, the first two boxes are to conduct durability tests,
The fourth two sets are to conduct alternating cooling and hot fog tests, 6.3.3 Evaluation of sampling inspection
6.3.3.1 If the first and second groups of inspection stations and 6.3.2 both meet the requirements of Table 8, they are evaluated as qualified, otherwise they are evaluated as unqualified: 6.3.3.2 If one of the resistance to women, alternating damp heat and resistance to recruitment does not meet the requirements, it is still evaluated as unqualified. ? , marking, packaging, transportation, storage
7.1 Marking
The center of the current meter shall be marked with:
Manufacturer name, trademark and address:
b) Product number or research name;
e! Inspection mark:
d) Manufacturer's name.
7.2 Packaging
7.2.1 Each outlet meter accessory must be packaged separately before being assembled. No movable objects are allowed in the packaging box. The total weight after packing is generally not more than 40kg. 7.2.2 The outside of the packing box should be marked: a) Name and address of the receiving list: company name or model, specification number of products: e) Name and address of the shipping unit: total weight of the box: e) Note: "Fang Sheng", "Ou Qing", "Xiao Xiao Jing Fang", "Xiao Xu Huan Wei" and other words or logos, 7.2.3 Attached with the product documents in the packing: a) Product certificate: h) Product tax declaration: packing list. The ammeter should be stored in a sterile and dry air, and the indoor air should not corrode the ammeter. 7.4.2 The storage period of the ammeter is 2 hours (starting from the date of storage at the factory). During the storage period, the ammeter should comply with the provisions of the standard.4.5.5.1.5.3.5.2.5.5.6 ...
5.7 Deflection stability test
Observe in the test of 5.6
5. Self-damping test
JB/T9843—1999
The time taken for the needle of the rising current meter to return from the power failure at the upper limit value of the dial to the time when it stops. Take the average value of the time measured in 3 tests
5.9 Overload test
Connect the ammeter to the current value of 3 (or 2) of the upper limit value of the dial, and after 19, the test current will only escape in one direction. Test 5 is followed by the inspection in 5.6 and 5.7.
5.10 Withstand voltage test
In the test environment specified in 4.1, the test voltage specified in 4.1 is applied between the ammeter circuit and the external device. During the test, the applied voltage starts from more than half of the full value of the test voltage, rises uniformly from about 1m to the full value, and is maintained for 1m0, and then drops uniformly. The rise and fall time is 10s.
5.11 Test
The current value is tested in a standard environment. Then put the ammeter into the low-temperature (and high-temperature) box, keep it warm for 2 hours as the box cools down [and heats up] to 40±3℃ (and 70℃±2℃), and then check its water value. From this, the difference between the low-temperature (and high-temperature) indication and the standard ambient temperature is obtained. After the test, the ammeter is placed in the environment for 4 hours, and then tested in 5.4, 5.6 and 5.1. 5.12 Vibration test
Fix the ammeter on the test plate, and pass a current of 1/100% of the upper limit of the dial (the first half of the test is passed with "forward current", and the second half is passed with "same current") in the reverse vibration test. Perturbation The vibration waveform of the test bench is a sine wave, and the distortion of the acceleration waveform should not exceed 25%. The test is carried out continuously, and the frequency changes exponentially with time. The frequency tolerance is: ±1-111 for 5-50Hz; ±2% for more than 50Hz. During the test, the fixed frequency vibration is performed first, followed by the sweep vibration. After the test, the ammeter is placed in a standard environment for 4 hours, and then the second type of the reduced test method a of [P5X in GB/T4942.2 is performed according to 5.3, 3.6 and 5.7. 14 Waterproof test
Perform the test method and system of X in B State 2 5.15 Durability test
On the test bench, give the ammeter an output current of 13 above the upper limit, at a rate of 0.017-0.08Hz, dial the dial from "+ upper limit value 13-0" to "upper limit value 13-0" for alternating test, and the test piece is calibrated again in 5.3, 5.6 and 5.7 5.16 Humidity test
Perform the provisions of GB/T2423.4. After the test, the ammeter is placed in a standard environment After 2 hours of placement, check according to 5.3~5.7. 5.17 Salt penetration test
Perform according to GB/T 2423.17. The test duration is 16 hours. After the test, place in the standard environment for 2 hours and then install 5.65.7 Inspection:
s.18 Long case test
Perform on representative power and components according to GBT 242316. After the test, the ammeter is taken out from the test chamber and the inspection is carried out immediately:
JB/T 9843—1990
All G According to the provisions of B/T2423.16, for parts made of materials that have undergone aging tests and whose self-growth does not exceed 50% of the area in the table, there is no need to undergo aging tests.
6 Inspection rules
6.1 Age test classification
Electric meters are divided into factory inspection and type inspection: 6.2 Factory inspection
Electric meters must be inspected in accordance with 4.6, 4.9.1 and 4.9.2, and only qualified pieces can be shipped. 6.3 Type inspection
Type inspection should be carried out in the following circumstances: New products should be inspected for production Product transfer! After the formal production, if there are major changes in structure, materials, and process, which may affect the product performance; during normal production, regular or accumulated production, once a year, an inspection is carried out: after a long-term suspension of production, the production is resumed, 6.3.1 Sampling piece method
6.3.1.1 According to the current normal acceptance plan specified in GBT2828, it is carried out and specified: Stock inspection level II 6.3.1.2 Building 5 batches A-2650 sets,
6.3.1.3 Sample size n=8.
6.3.1.4 The classification of unqualified is shown in Table 7.
Unqualified classification
Class A unqualified
Class II unqualified
Unqualified item name
Pointer false rotation level: Unqualified operation requirements
Basic difference technology meets the requirements
Overload activity requirements
Motion resistance requirements
Damping does not meet the requirements
Withstand voltage does not meet the requirements
Heat influence technology meets the requirements
Anti-cloud decision requirements
Water does not meet the requirements Requirements
Moisture seal does not meet the requirements
Protective layer does not meet the requirements
Period and other requirements of the original material
Supply supervision does not meet the requirements
Required parts do not meet the requirements
Assembly parts do not meet the requirements
Paint layer does not meet the requirements
Plating layer does not meet the requirements
Structural dimensions do not meet the requirements
JB/T9843-1999
The sampling plan is shown in Table 8. Ae and e show the number of unqualified samples. G.3, L, 5
Technical qualification classification
6.3.2 Implementation of sampling inspection
The sampling shall first be inspected according to Table 7 for the following items: Class C, Class A, F and 2, and then divided into four groups for separate inspections.
The first dimension is to conduct A-type 3 and 0-type 3~5 items
The second dimension is to conduct the first and second items of the oral type and A-type 4 items, the first two boxes are to conduct durability tests,
The fourth two sets are to conduct alternating cooling and hot fog tests, 6.3.3 Evaluation of sampling inspection
6.3.3.1 If the first and second groups of inspection stations and 6.3.2 both meet the requirements of Table 8, they are evaluated as qualified, otherwise they are evaluated as unqualified: 6.3.3.2 If one of the resistance to women, alternating damp heat and resistance to recruitment does not meet the requirements, it is still evaluated as unqualified. ? , marking, packaging, transportation, storage
7.1 Marking
The center of the current meter shall be marked with:
Manufacturer name, trademark and address:
b) Product number or research name;
e! Inspection mark:
d) Manufacturer's name.
7.2 Packaging
7.2.1 Each outlet meter accessory must be packaged separately before being assembled. No movable objects are allowed in the packaging box. The total weight after packing is generally not more than 40kg. 7.2.2 The outside of the packing box should be marked: a) Name and address of the receiving unit: company name or model, specification number: e) Name and address of the shipping unit: total weight of the box: e) Note: "Fang Sheng", "Ou Qing", "Xiao Xiao Jing Fang", "Xiao Xu Huan Wei" and other words or logos, 7.2.3 Attached with the product documents in the packing: a) Product certificate: h) Product tax declaration: packing list. The ammeter should be stored in a sterile and dry air, and the indoor air should not corrode the ammeter. 7.4.2 The storage period of the ammeter is 2 hours (starting from the date of storage at the factory). During the storage period, the ammeter should comply with the provisions of the standard.4.5.5.1.5.3.5.2.5.5.6 ...
5.7 Deflection stability test
Observe in the test of 5.6
5. Self-damping test
JB/T9843—1999
The time taken for the needle of the rising current meter to return from the power failure at the upper limit value of the dial to the time when it stops. Take the average value of the time measured in 3 tests
5.9 Overload test
Connect the ammeter to the current value of 3 (or 2) of the upper limit value of the dial, and after 19, the test current will only escape in one direction. Test 5 is followed by the inspection in 5.6 and 5.7.
5.10 Withstand voltage test
In the test environment specified in 4.1, the test voltage specified in 4.1 is applied between the ammeter circuit and the external device. During the test, the applied voltage starts from more than half of the full value of the test voltage, rises uniformly from about 1m to the full value, and is maintained for 1m0, and then drops uniformly. The rise and fall time is 10s.
5.11 Test
The current value is tested in a standard environment. Then put the ammeter into the low-temperature (and high-temperature) box, keep it warm for 2 hours as the box cools down [and heats up] to 40±3℃ (and 70℃±2℃), and then check its water value. From this, the difference between the low-temperature (and high-temperature) indication and the standard ambient temperature is obtained. After the test, the ammeter is placed in the environment for 4 hours, and then tested in 5.4, 5.6 and 5.1. 5.12 Vibration test
Fix the ammeter on the test plate, and pass a current of 1/100% of the upper limit of the dial (the first half of the test is passed with "forward current", and the second half is passed with "same current") in the reverse vibration test. Perturbation The vibration waveform of the test bench is a sine wave, and the distortion of the acceleration waveform should not exceed 25%. The test is carried out continuously, and the frequency changes exponentially with time. The frequency tolerance is: ±1-111 for 5-50Hz; ±2% for more than 50Hz. During the test, the fixed frequency vibration is performed first, followed by the sweep vibration. After the test, the ammeter is placed in a standard environment for 4 hours, and then the second type of the reduced test method a of [P5X in GB/T4942.2 is performed according to 5.3, 3.6 and 5.7. 14 Waterproof test
Perform the test method and system of X in B State 2 5.15 Durability test
On the test bench, give the ammeter an output current of 13 above the upper limit, at a rate of 0.017-0.08Hz, dial the dial from "+ upper limit value 13-0" to "upper limit value 13-0" for alternating test, and the test piece is calibrated again in 5.3, 5.6 and 5.7 5.16 Humidity test
Perform the provisions of GB/T2423.4. After the test, the ammeter is placed in a standard environment After 2 hours of placement, check according to 5.3~5.7. 5.17 Salt penetration test
Perform according to GB/T 2423.17. The test duration is 16 hours. After the test, place in the standard environment for 2 hours and then install 5.65.7 Inspection:
s.18 Long case test
Perform on representative power and components according to GBT 242316. After the test, the ammeter is taken out from the test chamber and the inspection is carried out immediately:
JB/T 9843—1990
All G According to the provisions of B/T2423.16, for parts made of materials that have undergone aging tests and whose self-growth does not exceed 50% of the area in the table, there is no need to undergo aging tests.
6 Inspection rules
6.1 Age test classification
Electric meters are divided into factory inspection and type inspection: 6.2 Factory inspection
Electric meters must be inspected in accordance with 4.6, 4.9.1 and 4.9.2, and only qualified pieces can be shipped. 6.3 Type inspection
Type inspection should be carried out in the following circumstances: New products should be inspected for production Product transfer! After the formal production, if there are major changes in structure, materials, and process, which may affect the product performance; during normal production, regular or accumulated production, once a year, an inspection is carried out: after a long-term suspension of production, the production is resumed, 6.3.1 Sampling piece method
6.3.1.1 According to the current normal acceptance plan specified in GBT2828, it is carried out and specified: Stock inspection level II 6.3.1.2 Building 5 batches A-2650 sets,
6.3.1.3 Sample size n=8.
6.3.1.4 The classification of unqualified is shown in Table 7.
Unqualified classification
Class A unqualified
Class II unqualified
Unqualified item name
Pointer false rotation level: Unqualified operation requirements
Basic difference technology meets the requirements
Overload activity requirements
Motion resistance requirements
Damping does not meet the requirements
Withstand voltage does not meet the requirements
Heat influence technology meets the requirements
Anti-cloud decision requirements
Water does not meet the requirements Requirements
Moisture seal does not meet the requirements
Protective layer does not meet the requirements
Period and other requirements of the original material
Supply supervision does not meet the requirements
Required parts do not meet the requirements
Assembly parts do not meet the requirements
Paint layer does not meet the requirements
Plating layer does not meet the requirements
Structural dimensions do not meet the requirements
JB/T9843-1999
The sampling plan is shown in Table 8. Ae and e show the number of unqualified samples. G.3, L, 5
Technical qualification classification
6.3.2 Implementation of sampling inspection
The sampling shall first be inspected according to Table 7 for the following items: Class C, Class A, F and 2, and then divided into four groups for separate inspections.
The first dimension is to conduct A-type 3 and 0-type 3~5 items
The second dimension is to conduct the first and second items of the oral type and A-type 4 items, the first two boxes are to conduct durability tests,
The fourth two sets are to conduct alternating cooling and hot fog tests, 6.3.3 Evaluation of sampling inspection
6.3.3.1 If the first and second groups of inspection stations and 6.3.2 both meet the requirements of Table 8, they are evaluated as qualified, otherwise they are evaluated as unqualified: 6.3.3.2 If one of the resistance to women, alternating damp heat and resistance to recruitment does not meet the requirements, it is still evaluated as unqualified. ? , marking, packaging, transportation, storage
7.1 Marking
The center of the current meter shall be marked with:
Manufacturer name, trademark and address:
b) Product number or research name;
e! Inspection mark:
d) Manufacturer's name.
7.2 Packaging
7.2.1 Each outlet meter accessory must be packaged separately before being assembled. No movable objects are allowed in the packaging box. The total weight after packing is generally not more than 40kg. 7.2.2 The outside of the packing box should be marked: a) Name and address of the receiving list: company name or model, specification number of products: e) Name and address of the shipping unit: total weight of the box: e) Note: "Fang Sheng", "Ou Qing", "Xiao Xiao Jing Fang", "Xiao Xu Huan Wei" and other words or logos, 7.2.3 Attached with the product documents in the packing: a) Product certificate: h) Product tax declaration: packing list. The ammeter should be stored in a sterile and dry air, and the indoor air should not corrode the ammeter. 7.4.2 The storage period of the ammeter is 2 hours (starting from the date of storage at the factory). During the storage period, the ammeter should comply with the provisions of the standard.Self-damping test
JB/T9843—1999
The time it takes for the needle of the rising ammeter to recover from the power failure at the upper limit of the dial to the time it stops. Take the average value of the time measured in 3 tests
5.9 Overload test
Connect the ammeter to the current value of 3 (or 2) of the upper limit of the dial, and after 19, the test current will only escape in one direction. Test 5 is connected to 5.65.7 test,
5.10 Withstand voltage test
In the standard circuit, apply the test voltage specified in 4. years between the ammeter circuit and the external circuit. During the test, the applied voltage starts from more than half of the full value of the test voltage, and rises to full stop evenly by about 1m0, and then drops evenly to the same value. The rising and falling time are both 10s.
5.11 Test
Test the current indication value in the standard environment. Then put the ammeter into the low-temperature (and high-temperature) box, keep it warm for 2h after the box cools down [and heats up] to 40±3℃ (and 70℃±2℃), and check its water value. From this, the difference between the low temperature (and high temperature) and the indication value at the standard ambient temperature is obtained. After the test, the ammeter is placed in the environment for 4, and then tested in 5.4, 5.6 and 5.1. 5.12 Vibration test
Fix the ammeter on the test stand, and pass a current of 1/100% of the upper limit of the dial (the first half of the test is passed with "forward current", and the second half is passed with "same current") in the reverse vibration test. Perturbation The vibration waveform of the test bench is a sine wave, and the distortion of the acceleration waveform should not exceed 25%. The test is carried out continuously, and the frequency changes exponentially with time. The frequency tolerance is: ±1-111 for 5-50Hz; ±2% for more than 50Hz. During the test, the fixed frequency vibration is performed first, followed by the sweep vibration. After the test, the ammeter is placed in a standard environment for 4 hours, and then the second type of the reduced test method a of [P5X in GB/T4942.2 is performed according to 5.3, 3.6 and 5.7. 14 Waterproof test
Perform the test method and system of X in B State 2 5.15 Durability test
On the test bench, give the ammeter an output current of 13 above the upper limit, at a rate of 0.017-0.08Hz, dial the dial from "+ upper limit value 13-0" to "upper limit value 13-0" for alternating test, and the test piece is calibrated again in 5.3, 5.6 and 5.7 5.16 Humidity test
Perform the provisions of GB/T2423.4. After the test, the ammeter is placed in a standard environment After 2 hours of placement, check according to 5.3~5.7. 5.17 Salt penetration test
Perform according to GB/T 2423.17. The test duration is 16 hours. After the test, place in the standard environment for 2 hours and then install 5.65.7 Inspection:
s.18 Long case test
Perform on representative power and components according to GBT 242316. After the test, the ammeter is taken out from the test chamber and the inspection is carried out immediately:
JB/T 9843—1990
All G According to the provisions of B/T2423.16, for parts made of materials that have undergone aging tests and whose self-growth does not exceed 50% of the area in the table, there is no need to undergo aging tests.
6 Inspection rules
6.1 Age test classification
Electric meters are divided into factory inspection and type inspection: 6.2 Factory inspection
Electric meters must be inspected in accordance with 4.6, 4.9.1 and 4.9.2, and only qualified pieces can be shipped. 6.3 Type inspection
Type inspection should be carried out in the following circumstances: New products should be inspected for production Product transfer! After the formal production, if there are major changes in structure, materials, and process, which may affect the product performance; during normal production, regular or accumulated production, once a year, an inspection is carried out: after a long-term suspension of production, the production is resumed, 6.3.1 Sampling piece method
6.3.1.1 According to the current normal acceptance plan specified in GBT2828, it is carried out and specified: Stock inspection level II 6.3.1.2 Building 5 batches A-2650 sets,
6.3.1.3 Sample size n=8.
6.3.1.4 The classification of unqualified is shown in Table 7.
Unqualified classification
Class A unqualified
Class II unqualified
Unqualified item name
Pointer false rotation level: Unqualified operation requirements
Basic difference technology meets the requirements
Overload activity requirements
Motion resistance requirements
Damping does not meet the requirements
Withstand voltage does not meet the requirements
Heat influence technology meets the requirements
Anti-cloud decision requirements
Water does not meet the requirements Requirements
Moisture seal does not meet the requirements
Protective layer does not meet the requirements
Period and other requirements of the original material
Supply supervision does not meet the requirements
Required parts do not meet the requirements
Assembly parts do not meet the requirements
Paint layer does not meet the requirements
Plating layer does not meet the requirements
Structural dimensions do not meet the requirements
JB/T9843-1999
The sampling plan is shown in Table 8. Ae and e show the number of unqualified samples. G.3, L, 5
Technical qualification classification
6.3.2 Implementation of sampling inspection
The sampling shall first be inspected according to Table 7 for the following items: Class C, Class A, F and 2, and then divided into four groups for separate inspections.
The first dimension is to conduct A-type 3 and 0-type 3~5 items
The second dimension is to conduct the first and second items of the oral type and A-type 4 items, the first two boxes are to conduct durability tests,
The fourth two sets are to conduct alternating cooling and hot fog tests, 6.3.3 Evaluation of sampling inspection
6.3.3.1 If the first and second groups of inspection stations and 6.3.2 both meet the requirements of Table 8, they are evaluated as qualified, otherwise they are evaluated as unqualified: 6.3.3.2 If one of the resistance to women, alternating damp heat and resistance to recruitment does not meet the requirements, it is still evaluated as unqualified. ? , marking, packaging, transportation, storage
7.1 Marking
The center of the current meter shall be marked with:
Manufacturer name, trademark and address:
b) Product number or research name;
e! Inspection mark:
d) Manufacturer's name.
7.2 Packaging
7.2.1 Each outlet meter accessory must be packaged separately before being assembled. No movable objects are allowed in the packaging box. The total weight after packing is generally not more than 40kg. 7.2.2 The outside of the packing box should be marked: a) Name and address of the receiving list: company name or model, specification number of products: e) Name and address of the shipping unit: total weight of the box: e) Note: "Fang Sheng", "Ou Qing", "Xiao Xiao Jing Fang", "Xiao Xu Huan Wei" and other words or logos, 7.2.3 Attached with the product documents in the packing: a) Product certificate: h) Product tax declaration: packing list. The ammeter should be stored in a sterile and dry air, and the indoor air should not corrode the ammeter. 7.4.2 The storage period of the ammeter is 2 hours (starting from the date of storage at the factory). During the storage period, the ammeter should comply with the provisions of the standard.Self-damping test
JB/T9843—1999
The time it takes for the needle of the rising ammeter to recover from the power failure at the upper limit of the dial to the time it stops. Take the average value of the time measured in 3 tests
5.9 Overload test
Connect the ammeter to the current value of 3 (or 2) of the upper limit of the dial, and after 19, the test current will only escape in one direction. Test 5 is connected to 5.65.7 test,
5.10 Withstand voltage test
In the standard circuit, apply the test voltage specified in 4. years between the ammeter circuit and the external circuit. During the test, the applied voltage starts from more than half of the full value of the test voltage, and rises to full stop evenly by about 1m0, and then drops evenly to the same value. The rising and falling time are both 10s.
5.11 Test
Test the current indication value in the standard environment. Then put the ammeter into the low-temperature (and high-temperature) box, keep it warm for 2h after the box cools down [and heats up] to 40±3℃ (and 70℃±2℃), and check its water value. From this, the difference between the low temperature (and high temperature) and the indication value at the standard ambient temperature is obtained. After the test, the ammeter is placed in the environment for 4, and then tested in 5.4, 5.6 and 5.1. 5.12 Vibration test
Fix the ammeter on the test stand, and pass a current of 1/100% of the upper limit of the dial (the first half of the test is passed with "forward current", and the second half is passed with "same current") in the reverse vibration test. Perturbation The vibration waveform of the test bench is a sine wave, and the distortion of the acceleration waveform should not exceed 25%. The test is carried out continuously, and the frequency changes exponentially with time. The frequency tolerance is: ±1-111 for 5-50Hz; ±2% for more than 50Hz. During the test, the fixed frequency vibration is performed first, followed by the sweep vibration. After the test, the ammeter is placed in a standard environment for 4 hours, and then the second type of the reduced test method a of [P5X in GB/T4942.2 is performed according to 5.3, 3.6 and 5.7. 14 Waterproof test
Perform the test method and system of X in B State 2 5.15 Durability test
On the test bench, give the ammeter an output current of 13 above the upper limit, at a rate of 0.017-0.08Hz, dial the dial from "+ upper limit value 13-0" to "upper limit value 13-0" for alternating test, and the test piece is calibrated again in 5.3, 5.6 and 5.7 5.16 Humidity test
Perform the provisions of GB/T2423.4. After the test, the ammeter is placed in a standard environment After 2 hours of placement, check according to 5.3~5.7. 5.17 Salt penetration test
Perform according to GB/T 2423.17. The test duration is 16 hours. After the test, place in the standard environment for 2 hours and then install 5.65.7 Inspection:
s.18 Long case test
Perform on representative power and components according to GBT 242316. After the test, the ammeter is taken out from the test chamber and the inspection is carried out immediately:
JB/T 9843—1990
All G According to the provisions of B/T2423.16, for parts made of materials that have undergone aging tests and whose self-growth does not exceed 50% of the area in the table, there is no need to undergo aging tests.
6 Inspection rules
6.1 Age test classification
Electric meters are divided into factory inspection and type inspection: 6.2 Factory inspection
Electric meters must be inspected in accordance with 4.6, 4.9.1 and 4.9.2, and only qualified pieces can be shipped. 6.3 Type inspection
Type inspection should be carried out in the following circumstances: New products should be inspected for production Product transfer! After the formal production, if there are major changes in structure, materials, and process, which may affect the product performance; during normal production, regular or accumulated production, once a year, an inspection is carried out: after a long-term suspension of production, the production is resumed, 6.3.1 Sampling piece method
6.3.1.1 According to the current normal acceptance plan specified in GBT2828, it is carried out and specified: Stock inspection level II 6.3.1.2 Building 5 batches A-2650 sets,
6.3.1.3 Sample size n=8.
6.3.1.4 The classification of unqualified is shown in Table 7.
Unqualified classification
Class A unqualified
Class II unqualified
Unqualified item name
Pointer false rotation level: Unqualified operation requirements
Basic difference technology meets the requirements
Overload activity requirements
Motion resistance requirements
Damping does not meet the requirements
Withstand voltage does not meet the requirements
Heat influence technology meets the requirements
Anti-cloud decision requirementsbZxz.net
Water does not meet the requirements Requirements
Moisture seal does not meet the requirements
Protective layer does not meet the requirements
Period and other requirements of the original material
Supply supervision does not meet the requirements
Required parts do not meet the requirements
Assembly parts do not meet the requirements
Paint layer does not meet the requirements
Plating layer does not meet the requirements
Structural dimensions do not meet the requirements
JB/T9843-1999
The sampling plan is shown in Table 8. Ae and e show the number of unqualified samples. G.3, L, 5
Technical qualification classification
6.3.2 Implementation of sampling inspection
The sampling shall first be inspected according to Table 7 for the following items: Class C, Class A, F and 2, and then divided into four groups for separate inspections.
The first dimension is to conduct A-type 3 and 0-type 3~5 items
The second dimension is to conduct the first and second items of the oral type and A-type 4 item
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