JB/T 5467.2-2002 Electromechanical AC active and reactive energy meters Part 2: Special requirements for long-life energy meters
Some standard content:
ICS17.220.20
N22
JB
Machinery Industry Standard of the People's Republic of China
JB/T5467.22002
Replaces JB/T54671997
Electromechanical meters for active energy and reactive energyPart 2: Particular requirements for long life meter2002-12-27 Issued
2003-04-01 Implementation
Issued by the State Economic and Trade Commission of the People's Republic of China
Foreword,
Introduction,
1
2
3
Scope
Normative references
Terms and definitions
Classification
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
According to the connection line method and the measured energy, it is divided into
According to the environmental tolerance performance, it is divided into
According to the insulation protection level, it is classified into
Standard reference current
Rated maximum current.
Standard reference voltage,
Standard reference frequency..
Naming
5
Requirements
5.1
5.2| |tt||5.3
5.4
5.5
5.6
5.7
5.8
Mechanical requirements.
Electrical requirements
Accuracy requirements.
Starting and creeping
Electric energy meter constants,
Adjustment device.
Weather resistance
Average life (reliability requirements)
6
Test methods,
6.1||tt ||6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
6.11
6.12
6.13
6.14
General mechanical requirements test
Case test.
Terminals, terminal blocks
Terminal covers
Tracking and creepage distances| |tt||11 types of protective insulation encapsulated watt-hour meter
Heat resistance and flame retardancy..
Dust and water resistance test of watt-hour meter
Meter
Basket of watt-hour meter.
Electromagnetic drive element
Moving parts..
Damping magnetic steel
Other parts in the meter
Item
Time
JB/T5467.2—2002
10
10
JB/T5467. 2—2002
6.15
Direction of rotation
6.16
6.17
6.18
6.19
6.20
6.21
6.22
6.23
6.24
6.25
6.26
6.27
6.28
6.29
6.30||tt| |6.31
6.32
6.33
Butterfly sound,
Power loss
Temperature rise test
Short-time overcurrent,
Self-heating effect
Insulation test
Anti-ground fault capability test.
Test of change caused by current change
Light load stability test
Starting and creeping test
Electric energy meter constant.
Ambient temperature effect
Meter machinery Influence of load
Influence of other influencing quantities,
Adjustment device
Explanation of test results
Weather resistance test,
Average life
6.34 Marking
7 Inspection rules
8 Marking, packaging and storage
8.1 Marking
8.2 Packaging and storage
Appendix A (Normative Appendix) Inspection items for long-life electric energy meters Appendix B (Informative Appendix) Simplified operation method for testing the resistance torque of the rotating system! Basic environmental conditions of each group of electric energy meters Table 2 Limits of error changes caused by temperature, Table A.1 Test items
n
10
10
10
10
10
10
10
10
10
10
10
1
11|| tt||11
12
12
12
12
13
15
Foreword
JB/T5467 "Electromechanical AC active and reactive energy meters" is divided into two parts:-Part 1: General requirements:
-Part 2: Special requirements for long-life energy meters. This part is Part 2 of JB/T5467. The main differences between this part and JB/T5467.1 are as follows; JB/T5467.2-2002
stipulates that the average life span (MTTF) of long-life electric energy meters is 20 years and above (5.8 of JB/T5467.1: 5.8 of this part): - Added salt spray and carbon dioxide test requirements and test methods (5.7.3, 6.32.4 and 5.7.4, 6.32.5 of this part): Other environmental performance aspects also put forward higher requirements than Part 1: For long-life electric energy meters that are not repaired Due to the long service life, corresponding provisions are made for the structure, materials and performance of the housing, meter, electric energy meter base, electromagnetic components, bearing system, worm, disc, anti-submarine device, damping magnetic steel, adjustment device, other internal parts, etc. as the guiding requirements for design: 1. Added requirements for operating noise (5.1.16 of this part): higher provisions are made for technical indicators such as terminal block, rated maximum current, meter, and friction torque of bearing system, mechanical load influence, light load stability, temperature influence, etc. Appendix A of this part is a normative appendix.
Appendix B of this part is an informative appendix.
This part is proposed by China Machinery Industry Federation. This part is under the jurisdiction of the National Technical Committee for Standardization of Electrical Instruments. Drafting units of this part: Huali Group Co., Ltd., Ningbo Samsung Group Co., Ltd., Zhengtai Group Zhejiang Zhengtai Instrument Co., Ltd., Harbin Electric Instrument Research Institute, Ningbo Kaihui Electronic Industry Co., Ltd., Qingdao Electricity Meter Factory, Shanghai Jinling Intelligent Electricity Meter Co., Ltd., Siemens Meter (Zhuhai) Co., Ltd., Henan Jinque Electric Co., Ltd., Shanghai Yingfute Electronic Technology Co., Ltd., Changchao Electricity Meter Factory, Tianjin Tengma Electricity Meter Factory. The main drafters of this part: Xue Dejin, Fang Jiliu, Chen Weizhen, Sheng Quangen, Wang Xiaochuan, Bai Jingfang. The previous versions of the standards replaced by this part are: JB/T5467-1991, JB/T5467-1997. m
Introduction
JB/T5467.22002
The formulation of this part aims to stipulate the requirements for long-life electric energy meters through standardized means as a technical basis for design, production and inspection.
In addition, in conjunction with this part, the industry standard "Reliability Requirements and Assessment Methods for Electric Energy Meters" and the industry standard "Magnetic Bearing Components for Parts and Parts for Electric Energy Meters" have also been formulated accordingly. In this way, the standard system for electromechanical AC energy meters has been standardized, unified and improved from all aspects. After my country implements the one-household-meter electricity charging policy, the effective use period without repair of ordinary level 2 charging electric energy meters will determine the consumption of manpower, material resources, and financial resources for implementing the one-household meter policy. Therefore, the problem of long-life electric energy meters mentioned on the agenda. Long-life electric energy meters mainly refer to single-phase electric energy meters that charge fees. Considering that three-wire four-wire active electric energy meters may also be included in the scope of long-life electric energy meters, the scope of application of this part is mainly 2-level single-phase and 3-level electric energy meters. Camera electrical AC energy meter. As my country's industrialization level gradually increases, the effects of sulfur dioxide and salt spray in the atmosphere will appear. This part also lists salt spray and sulfur dioxide tests as environmental test requirements. Generally, electric energy meters do not have this requirement. In terms of other environmental performance requirements, It is also more stringent than the standard for ordinary electromechanical AC energy meters (JB/T5467.1). The sulfur dioxide test time and sulfur dioxide content of long-life electric energy meters are stipulated with reference to foreign standards.
V
1 range
Electromechanical AC active and reactive energy meters
Part 2: Special requirements for long-life energy meters JB/T5467.2-- -2002
This part specifies the classification, requirements, test methods, inspection rules, packaging and storage of electromechanical AC active and reactive long-life electric energy meters. This section only applies to electromechanical AC active and reactive long-life electric energy meters (hereinafter referred to as electric energy meters) that are used in fixed installations and measure AC active energy with a reference frequency of 50Hz and an accuracy level of Level 2. This section also applies to basic meters with other additional functions, such as pulse, multiple rate, prepayment, etc. The added functional requirements should comply with the requirements of the corresponding standards.
2 Normative reference documents
The provisions in the following documents become the provisions of this part through the reference of this part of B/5467. For dated reference documents, all subsequent amendments (excluding corrigenda) or revisions do not apply to this section. However, parties to an agreement based on this section are encouraged to study whether the latest versions of these documents can be used. . For undated documents, the latest version applies to this section. GB/T2423.17-1993 Basic Environmental Testing Procedures for Electrical and Electronic Products Test Ka: Salt Spray Test Method (eqvEC60068-2-11:1981)
GB/T2423.33-1989 Basic Environmental Testing Procedures for Electrical and Electronic Products Test Kca: Test method for high concentration sulfur dioxide (neqDIN 50018:1978)
GB4793.1-1995 Safety requirements for electrical equipment for measurement, control and laboratory use Part 1: General requirements (idtIEC61010-1:1990)|| tt||0.5, 1 and 2 level AC active watt-hour meter (idtIEC60521:1988) GB/T15283-1994
Calculator for watt-hour meter
JB/T5459I991
JB /T5467.1-2002 Electromechanical AC active and reactive energy meters Part 1: General requirements Electric energy meter reliability requirements and assessment methods
JB/T50070-2002
3 Terms and definitions|| tt||GB/T152831994 and JB/T5467.1--2002 and the following terms and definitions apply to this section. 3.1
Failure failure
The event that the product terminates its ability to complete the specified function. 3.2
Mean time to failure meantimetfailure (MTTF) expectation of time to failure. | |tt | Electric energy meters are considered non-repairable products based on their value. 3.4
Long life electric energy meter longlifeWatt-hourmeterJB/T5467.2—2002
An electric energy meter with an average effective life of 20 years or more without repair. The average effective service time without repair referred to in this section refers to the mean time to failure (MTTF) when the timed and fixed-number truncation reliability verification test is used in the laboratory, also known as the average life. It may take some time to obtain the average time before failure through field tests, which requires negotiation, coordination and joint efforts between the supply and demand parties. 3.5
Laboratory test laboratorytest
A verification test or determination test done under specified and controlled conditions (which may or may not simulate on-site conditions). 3.6
Field test fieldtest
A verification test or determination test conducted on-site where working, environmental, maintenance and measurement conditions are recorded. 4 categories
According to the access line method and measurement capabilities, it is divided into 4.1
a)
b)
c)
d)| |tt||e)
Single-phase two-wire direct connection type:
Single-phase three-wire direct connection type;
Single-phase two-wire type connected through transformer: || tt||Three-phase four-wire direct connection type;
Three-phase four-wire connection type through current transformer. Table 1 Basic environmental conditions of each group of electric energy meters
Group mark
Environmental parameters
Reference humidity
Reference humidity
Specified working environment Temperature
Working limit temperature range
Transportation and storage limit temperature range
Phase
Operation
Temperature
degree
Average annual
30 days (these days are distributed in a natural way
throughout the year)
The rest of the time sometimes reaches
sun exposure
salt spray| |tt||Condensation
Dust seconds
Rain travel
Sulfur dioxideWww.bzxZ.net
P group
No mark
-10℃~45 ℃
-25℃~55℃
-25℃~70℃
None
None
None
Slightly||tt ||23 ℃
40%~60% (23℃)
≤75%
95%
85%
There is a possibility of vertical dripping| |tt||Slight
Note 1: For the provisions of relative humidity as a function of ambient temperature, see Appendix A of JB/T5467.1-2002 (Normative Appendix) Note 2: Temperature limit values ??of electric energy meters during storage and transportation The maximum time is 6h. 4.2 According to the environmental resistance performance, it is divided into
indoor type (P group):
a)
b) outdoor type (C group).
2
Group C
c
25℃~55C
40℃~70℃
40℃~70℃|| tt||Yes
Yes
Yes
Yes
Yes
Yes
See Table 1 for the specific usage environment.
4.3 According to the insulation protection level, it is classified as
a) Class II protective insulation-encapsulated electric energy meter:
b) Class II protective insulation-encapsulated electric energy meter.
4.4 standard reference current
The standard reference current is the same as JB/T5467.1-2002 Table 2. 4.5 rated maximum current
JB/T5467.2-2002|| tt||Direct connection type is the product of the basic current (1) of the electric energy meter and the maximum allowable overload multiple. The overload factor should be 4 times or above. When connected through a transformer, it is the product of the rated current (1) of the secondary side of the transformer and the maximum allowable overload multiple. Such as 1.21n, 1.51. or 2I, 4.6 standard reference voltage
The standard reference voltage is the same as JB/T5467.1---2002 Table 3. 4.7 standard reference frequency
The standard value of the scaling rate is 50Hz.
4.8 Naming
After reliability laboratory tests have been conducted by a nationally recognized authoritative laboratory, electric energy meters with an MTTF of 20 years or more (complying with all the provisions of this part) can be named long-life electric energy meters on their nameplates. , its characteristic code is "L". For example: DDL-×××, DTL-×XX, their models are promulgated by the standardization management department. 5 Requirements
5.1 Mechanical requirements
5.1.1 General requirements
should comply with the provisions of 5.1.1 of JB/T5467.1-2002. 5.1.2 Case
5.1.2.1 Structure
The casing of the electric energy meter should be lead-sealed. The internal components of the electric energy meter can only be accessed after the lead seal is removed, without using tools, coins or similar tools. Open the meter cover, and
the case will not hinder the normal operation of the electric energy meter during any non-permanent deformation. 5.1.2.2 Mechanical properties
After the spring hammer test (see Appendix C of GB4793.1-1995), the case and end cover should not be damaged that could affect the function of the electric energy meter, and live parts should not be touched. Even slight damage is considered satisfactory without reducing the protection against indirect contact, liquids, dust and water.
The casing of group P electric energy meters should comply with IP51 requirements, and the casing of group C electric energy meters should comply with IP54 requirements. The overall dimensions and installation dimensions of the electric energy meter are shown in Appendix B of JB/T5467.1-2002 (informative appendix). 5.1:2.3 The watch cover
should be a continuous whole with a certain strength and resistant to deformation and corrosion. The nameplate of the electric energy meter should be clean, transparent, and without scratches so that the nameplate and rotor can be clearly observed and the counter can be read. 5.1.2.4 Base
The base should be an extended base, that is, a structure connected to the base of the terminal button. 5.1.3 Terminals and terminal blocks
shall comply with the requirements of 5.1.4 of JB/T5467.1--2002. The method of connecting the current terminal to the current coil in the meter should be: welding type, crimping type or embedded double screw tightening method. The terminal block should be able to withstand the test of 5.7 (climate environment resistance) without corrosion. 5.1.4 Terminal cover
3
JB/T5467.22002
The terminal cover should be made of insulating material, and there should be a wiring diagram on the inside of the cover. The remaining requirements are the same as 5.1.5 of JB/T5467.1-2002. The 5.1.5 space and filter distance
should comply with the provisions of 5.1.6 of JB/T5467.1-2002. 5.1.6 Class IⅡ protective insulation-encapsulated electric energy meters shall comply with the provisions of 5.1.7 of JB/T5467.1-2002. 5.1.7 Heat resistance and flame retardancy
shall comply with 5.1 of JB/T5467.1-2002. 8 regulations. 5.1.8 Dustproof and waterproof
should comply with the provisions of 5.1.9 of JB/T5467.1-2002. 5.1.9 Counter (counting mechanism)
5.1.9.1 Structural requirements
The counter should be of drum type and comply with the provisions of 5.1.10 of JB/T5467.1-2002. The curved frame of the meter should be made of high-strength alloy plywood, the axis needle should be made of stainless steel, the axis hole should not be lubricated, the character wheel font should be clear, the character height should not be less than 5mm, and the width should not be less than 3mm. And it can withstand sunlight without fading and the information does not change. The structure of the meter should ensure that it is fixed on the electric energy meter base frame without displacement, and there should be positioning measures to ensure that the meshing depth of the worm gear and worm is between 1/3 and 2/3 of the tooth height.
5.1.9.2 Friction torque of the counter
When the transmission ratio is 1200, the friction torque of the counter should not be greater than 0.05μN·m. Note: The friction torque of other transmission ratios shall be converted according to the provisions of JB/T5459-1991. 5.1.10 Electric energy meter base frame
Made of alloy material that is not easy to rust after treatment. 5.1.11 Electromagnetic drive element
The combination of voltage and current components and base frame should ensure that the electric energy meter does not shift or loosen during its life cycle. The fastening method can be press or other methods such as screws with positioning structures, but the screws should be tightened with spring washers. The surface treatment of voltage and current iron cores should ensure that no rust will affect product performance during the product's service life. 5.1.12 Movable parts
5.1.12.1 Magnetic bearing system
Bearings should adopt magnetic bearing systems. The magnetic bearing system consists of a magnetic bearing, a guide ring and a guide pin. The magnetic components of the magnetic bearing should be made of high-stability, non-corrosive magnetic materials. The upper and lower guide pins should be made of stainless steel, with a hardness greater than or equal to 680HV and an excellent roughness. At R, 0.1um: No lubricant should be added between the guide ring and the guide pin. 5.1.12.2 The resistance moment of the bearing system
The resistance moment of the bearing system should not be greater than 0.1% of the basic driving torque of the electric energy meter. 5.1.12.3 The rotating shaft
The rotating shaft and the worm should be integrated into one body. The worm should be smooth and clean, and the surface roughness should not be greater than 0.8um. 5.1.12.4 Discs
The two discs should be flat, and the edges of the discs should be smooth and clean, without cracks, dents, defects or other spots. The edges should be painted with black counting marks about 10mm long at the corresponding positions to prevent under-the-surface holes. , the logo should not peel off, change color, and be non-reflective. There should be 100 evenly divided grid marking lines and graduation numbers in multiples of 10 on the edge of the upper surface of the disk.
5.1.12.5 Anti-submersible device
An anti-submersible hole should be set on the disc, and a thick black mark line should be printed on an anti-submersible hole, which is the starting point of the disc index line Wire. 5.1.13 Damping magnet
10 regulations. The bending frame of the meter should be made of high-strength alloy plywood, the shaft needle should be made of stainless steel, the shaft hole should not be lubricated, the font of the wheel should be clear, the height should not be less than 5mm, and the width should not be less than 3mm. It should be able to withstand sunlight without fading and the information should not be changed. The structure of the meter should ensure that it is fixed on the base of the electric energy meter without displacement, and there should be positioning measures to ensure that the meshing depth of the worm gear and worm is between 1/3 and 2/3 of the tooth height.
5.1.9.2 Friction torque of the meter
When the transmission ratio is 1200, the friction torque of the meter should not be greater than 0.05μN·m. Note: The friction torque of other transmission ratios shall be converted according to the provisions of JB/T5459-1991. 5.1.10 Electricity meter base
The base shall be made of alloy material with certain strength, good dimensional stability and not easy to rust after surface treatment. 5.1.11 Electromagnetic drive element
The combination of voltage and current elements and base shall ensure that the electricity meter will not shift or loosen during its service life. The fastening method can be fastened by pressing or other methods such as screws with positioning structures, but the screws shall be fastened with spring washers. The surface treatment of the voltage and current cores shall ensure that no rust that affects the product performance will occur during the product life. 5.1.12 Movable parts
5.1.12.1 Magnetic bearing system
The bearings shall adopt a magnetic bearing system. The magnetic bearing system consists of a magnetic bearing, a guide ring and a guide needle. The magnetic element of the magnetic bearing should be made of a highly stable, non-corrosive magnetic material. The upper and lower guide needles should be made of stainless steel with a hardness greater than or equal to 680HV and a roughness better than R, 0.1um: Lubricant shall not be added between the guide ring and the guide needle. 5.1.12.2 The resistance torque of the bearing system
The resistance torque of the bearing system shall not be greater than 0.1% of the basic driving torque of the electric energy meter. 5.1.12.3 The shaft
The shaft and the worm shall be combined as one, the worm shall be smooth, and the surface roughness shall not be greater than 0.8um. ??5.1.12.4 The disc
The two discs shall be flat, the disc edge shall be smooth, without cracks, concave, defect or other sores, and the edge shall be coated with a black counting mark of about 10mm in length at the corresponding position of the anti-submarine hole. The mark shall not fall off, change color, and have no reflection. The upper edge of the disk should have 100 evenly spaced grid marking lines and graduation numbers that are multiples of 10.
5.1.12.5 Anti-submarine device
Anti-submarine holes should be set on the disk, and a thick black marking line should be printed at one of the anti-submarine holes, which is the starting line of the disk's graduation line. 5.1.13 Damping magnetic steel
10 regulations. The curved frame of the meter should be made of high-strength alloy plywood, the axis needle should be made of stainless steel, the axis hole should not be lubricated, the character wheel font should be clear, the character height should not be less than 5mm, and the width should not be less than 3mm. And it can withstand sunlight without fading and the information does not change. The structure of the meter should ensure that it is fixed on the electric energy meter base frame without displacement, and there should be positioning measures to ensure that the meshing depth of the worm gear and worm is between 1/3 and 2/3 of the tooth height.
5.1.9.2 Friction torque of the counter
When the transmission ratio is 1200, the friction torque of the counter should not be greater than 0.05μN·m. Note: The friction torque of other transmission ratios shall be converted according to the provisions of JB/T5459-1991. 5.1.10 Electric energy meter base frame
Made of alloy material that is not easy to rust after treatment. 5.1.11 Electromagnetic drive element
The combination of voltage and current components and base frame should ensure that the electric energy meter does not shift or loosen during its life cycle. The fastening method can be pressing or other methods such as screws with positioning structures, but the screws should be tightened with spring washers. The surface treatment of the voltage and current cores should ensure that no rust will affect the performance of the product during the service life of the product. 5.1.12 Movable parts
5.1.12.1 Magnetic bearing system
Bearings should adopt magnetic bearing systems. The magnetic bearing system consists of a magnetic bearing, a guide ring and a guide pin. The magnetic components of the magnetic bearing should be made of high-stability, non-corrosive magnetic materials. The upper and lower guide pins should be made of stainless steel, with a hardness greater than or equal to 680HV and an excellent roughness. At R, 0.1um: No lubricant should be added between the guide ring and the guide pin. 5.1.12.2 The resistance moment of the bearing system
The resistance moment of the bearing system should not be greater than 0.1% of the basic driving torque of the electric energy meter. 5.1.12.3 The rotating shaft
The rotating shaft and the worm should be integrated into one body. The worm should be smooth and clean, and the surface roughness should not be greater than 0.8um. 5.1.12.4 Discs
The two discs should be flat, and the edges of the discs should be smooth and clean, without cracks, dents, defects or other spots. The edges should be painted with black counting marks about 10mm long at the corresponding positions to prevent under-the-surface holes. , the logo should not peel off, change color, and be non-reflective. There should be 100 evenly divided grid marking lines and graduation numbers in multiples of 10 on the edge of the upper surface of the disk.
5.1.12.5 Anti-submersible device
An anti-submersible hole should be set on the disc, and a thick black mark line should be printed on an anti-submersible hole, which is the starting point of the disc index line Wire. 5.1.13 Damping magnet
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