SJ/T 10727-1996 Blank Detailed Specification for Glass Vacuum Shaped Tubes for Low Voltage Circuit Breakers SJ/T10727-1996 Standard Download Decompression Password: www.bzxz.net

Record number: 112-1997
Electronic Industry Standard of the People's Republic of China
SJ/T10727-1996
Glass vacuum switch tubes for low-voltage circuit breakers
Blank detail specification of glassvacuumswitch tubes for low-voltage circuit breakers1996-07-22 Issued
Ministry of Electronics Industry of the People's Republic of China
1996-11-01 Implementation
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Electronic Industry Standard of the People's Republic of China
Glass vacuum switch tubes for low-voltage circuit breakers
Blank detail specification of glass vacuumswitch tubes for low-voltage circuit breakers1Subject content and scope of application
SJ/T10727-1996
This blank detailed specification is a supplementary document to SJ/T10581-94 <General specification for vacuum switch tubes for low-voltage circuit breakers>, which specifies the format and contents of the detailed specification. This standard applies to glass vacuum switch tubes for low-voltage circuit breakers with rated voltage of 1.2kV and below and rated frequency of 50Hz (or 60Hz). Vacuum switch tubes are also called vacuum interrupters (hereinafter referred to as switch tubes). 2 Reference standards
SJ/T10581-94 General specification for vacuum switch tubes for low-voltage circuit breakers SJ/T10582-94 Test methods for vacuum switch tubes for low-voltage circuit breakers 3 Structure, content and filling order of detailed specifications 3.1 The "Introduction" part of the detailed specification should use the following typical terms: "This standard is formulated in accordance with SJ/T10727-1996 "Blank detailed specification for glass vacuum switch tubes for low-voltage circuit breakers" and meets the requirements of SJ/T10581-94 "General specification for vacuum switch tubes for low-voltage circuit breakers". 3.2 The "Subject content and scope of application" part of the detailed specification should use the following typical terms: "This standard specifies the technical performance, inspection methods and marking, packaging, transportation and storage of glass vacuum switch tubes for ×××× type low-voltage circuit breakers."
"This standard applies to glass vacuum switch tubes for ×××× type low-voltage circuit breakers (hereinafter referred to as switch tubes). 3.3 The "referenced standards" section of the detailed specification mainly describes the standards that are directly referenced and must be used in conjunction with the product. 3.4 The detailed specification should describe the structural type of the product and provide the product appearance drawing. The main dimension items and tolerance markings of the appearance drawing should comply with the provisions of Appendix A (Supplement). 3.5 The "technical performance part" of the detailed specification shall comply with the following provisions: 3.5.1 Product performance parameters shall be filled in according to Table 1. Approved by the Ministry of Electronics Industry of the People's Republic of China on July 22, 1996 YKAONrKAcas
Implementation on November 1, 1996
Rated working voltage
Rated insulation voltage
Rated working current
Rated frequency
Rated short-circuit making capacity (current)
Rated short-circuit breaking capacity (current)
SJ/T10727-1996
Performance parameter table
Table 1
Rated short-circuit ultimate breaking capacity (current) Rated operating short-circuit breaking capacity (current) Rated short-time withstand current
Power frequency withstand voltage
|Mechanical life
Electrical life
Rated contact opening
Maximum contact opening
Contact self-closing force
Tensile force at rated contact opening
Contact resistance under contact self-closing force
Allowable contact wear thickness
Static safety bearing capacity
Storage period (standing time ti=d, t2=d, t=d)
Note: Serial number: Items 12 and 13 should indicate the number of operating cycles of the test and the number of operating cycles per hour in the remarks column. 3.5.2www.bzxz.net
The mechanical operating parameters that the low-voltage circuit breaker assembled with the switch tube should achieve should be filled in according to Table 2. Table 2 Mechanical operating parameters of the low-voltage circuit breaker after assembly
Rated opening
Contact contact travel||tt ||Average closing speed
Average opening speed
Minimum working pressure of contacts
Contact closing bounce time
Three-pole synchronicity
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SJ/T10727--1996
3.5.3 The maximum value of allowable defects on the glass bulb surface shall be filled in according to the contents specified in Table 3, and its value shall be in accordance with the provisions of the detailed specifications. Table 3 Maximum value of allowable defects on the glass bulb surface
Defect items
Defect range
Transparent sand spots
Opaque sand spots
3.6 The "Inspection items and inspection requirements" section of the detailed specifications shall include: factory inspection, routine inspection, and type inspection. 3.6.1
Factory inspection shall be filled in according to Table 4.
Table 4 Factory inspection
Inspection items
Dimensions
Contact self-closing force
Tension at rated opening distance
Contact resistance under contact self-closing force
Power frequency withstand voltage
Storage period (t,=d,t2-d,tj=d)
Routine inspection Fill in according to Table 5.
Inspection items Date
Temperature change
Maximum contact opening distance
Static safe bearing capacity
Test method as per
SJ/T10582
Sampling plan
Table 5 Routine inspection
Test method
As per SJ/T10582
5.4.1 or 5.4.2
3.6.3 Type inspection as per Table 6.
Sampling plan
Inspection requirements
Conform to SJ/T10581
Conform to SJ/T10581
6.1.3, 6.1.4, 6.1.6~6.1.10, 6.1.12 requirements
Conform to product appearance drawing
Conform to SI/T10581
Conform to SJ/T10581
Conform to SJ/T1058 1
SJ/T10581
Conforms to SJ/T10581
Conforms to SJ/T10581
6.3.3 requirements
Conforms to SJ/T10581
Conforms to SJ/T10581
Conforms to SJ/T10581
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6.3.2, 9.2.5.1, 9.2.5.2
Rated operating short-circuit breaking capacity (current) Rated ultimate short-circuit breaking capacity (current) Rated short-time withstand current
Electrical life
Mechanical life
Alternating damp heat
SJ/T10727-1996
Table 6 Type inspection
Inspection method
According to SJ/T10582
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Inspection requirements
Dimension marking
SJ/T10727-1996
Appendix A
Dimension marking provisions
(Supplement)
Dimension items and tolerance markings shall be in accordance with the provisions of Table A1. Table A1
Length of the mating part on the conductive rod
Diameter (or width) of the mating part on the conductive rodLength between the two mounting end faces
Maximum outer diameter or insulation shell diameter
Diameter of the Kovar ring
Marking position
Specification and length of the connecting thread
Diameter of the lifting surface
Position, specification and length (depth) of the lifting threadParallelism of the two mounting surfaces
Coaxiality of the dynamic and static ends (or dynamic and static conductive rods)Verticality of the static conductive rod and the static end mounting surfaceRoughness of the electrical connection surface Note: ① The symbol "√\" indicates "applicable". ② The five dimensions of serial numbers 9 to 13 are marked according to the requirements of the product structure. Additional notes: This standard is proposed by the Ministry of Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of the Standardization Institute of the Ministry of Electronics Industry. This standard is drafted by Wuxi Vacuum Electric Appliance Factory. The main drafters of this standard are: Hu Raoqi, Shen Xifen, Fang Jide, and Liu Jianbai. Tolerance selection Quantitative tolerance rYKAOMrKAa Unmarked tolerance Reference size
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