JB/T 9864.1-1999 This standard is a revision of ZB J94 005-88 "Technical conditions for circuit breakers for magneto motors". The main changes are as follows: - The impact test in the original standard has been cancelled; - The frequency sweep vibration test has been added. This standard specifies the technical requirements, inspection rules, marking, packaging, transportation and storage of circuit breakers for magneto motors (hereinafter referred to as circuit breakers). This standard is applicable to quality spot checks, supervisory inspections, new product identification and commissioned inspections of circuit breakers. This standard was first issued in 1988. JB/T 9864.1-1999 Technical conditions for circuit breakers for magneto motors JB/T9864.1-1999 Standard download decompression password: www.bzxz.net

ICS27.020
Machinery Industry Standard of the People's Republic of China
JB/T 9864.19864.2—1999
Magneto breakers
Published on August 6, 1999
National Bureau of Machinery Industry
Implemented on January 1, 2000
JR/T9864.1-1999
This standard is a revision of ZBJ94H5-8 Technical Conditions for Magneto Breakers. This standard is different from ZBJ94005-8 in terms of breaking ratio and installation technology. The following changes are made to the impact test in the original standard: a sweep frequency alarm test has been added. This standard replaces ZBJ94005-88 from the date of implementation. This standard was proposed by Tianjin Internal Combustion Engine Research Institute in 198. The drafting unit of this standard is: Tianjin Internal Combustion Engine Research Institute. The main person in charge of this standard is Ren Lihuan. The account must be small. This standard was first issued in 198.
1 Scope
Machinery Industry Standard of the People's Republic of China
Breakers for Magneto Motors
Technical spectfications for magneto breakersJB/T9864.J—1999
Generation Z[9405—B8
Technical standard specifies the technical requirements, inspection rules and markings, packaging, transportation and storage, etc. of breakers for fuel-fired motors [hereinafter referred to as magneto breakers].
This standard is applicable to the quality inspection, supervision inspection, new product supervision appraisal and entrusted inspection of breakers. 2
Cited Standards
The clauses contained in the following standards are cited in this standard and are the clauses of the standards. When this standard is published, the version shown is the effective version. All standards will be revised. All parties using this standard shall discuss the possibility of using the latest version of the following standards: GB/T2B2B—1987
J8-T 5140.1—1999
JB/T6730—1993
JHrT9860.2—1955
3 Technical requirements
Remote batch inspection station teaching sampling procedures and throwing sample table (applicable to continuous batch inspection) Magnetic motor technical conditions
Magnetic motor ignition system test force method
Technical conditions for tungsten rods for circuit breaker contacts
3.1 The magnetic motor shall comply with the requirements of this standard and be manufactured in accordance with the product drawings and technical documents approved by the prescribed procedures. 3.2 Under the following environmental conditions, the magnetic motor can work normally: a) Ambient medium limit: .-40~80℃;
b) Relative humidity: not more than 95%.
3.3 The breaker can withstand the sweep frequency vibration specified in Table 4 of 5140.1-199. 3.4 Continuous ignition performance
When the breaker works under a certain working current, it should ensure that the ignition is connected within the range of the minimum to maximum speed specified in Table 1 and the distance between the two electrodes of the three-pole needle-shaped effect device specified in 7.1.1 of JB/T6730-1993 (hereinafter referred to as the distance between the two electrodes) (hereinafter referred to as the distance between the two electrodes) (hereinafter referred to as the minimum continuous ignition speed and the range of continuous ignition speed) The measured low reverse ignition speed and the high speed waiting time shall not be less than 205e
Magnetic hair machine type
Equipped with steam engine as the volume
Three-pole ratio
Continuous high speed test plan
Flywheel! Including flash rotor)
50-125
=320-quantity*rotor
Note: The maximum speed of the electric appliance is 1.2 times of the new secondary fire transfer of the dense motor, approved by the Machinery Industry Bureau on 1999-08-06
176 General commercial transfer
2000-01-01 implementation
JB/T 9864.1—1999
3.5 The gap between the two contacts of the circuit breaker can be adjusted arbitrarily within the prescribed range. 3.6 When the circuit breaker is disconnected, the moving contact to the ground should be able to withstand a positive voltage test of 50Hz and 300V for 1mn, and there should be no damage to the insulation. 3.7 When the circuit breaker contacts are disconnected, the insulation resistance of the moving contact to the ground should not be less than 1/2. 3.8 The contact tension of the circuit breaker should comply with the requirements of the product technical documents, and the measurement tolerance is ±15%. The maximum allowable value of the contact surface roughness R of the two contacts of the circuit breaker is 0.4Lm. 3.10 The contacts of the breaker should be welded firmly, and the welding strength of the weld should not be less than T8.45MPa3. [When the contacts of the breaker are closed, the contact resistance should be no more than 0.32, and the contact resistance after cleaning should not be greater than 0.15. 3.12 When the contacts of the breaker are closed, the coaxiality should not be more than Φ0.25mm (axial rate momentum is excluded; the two contact surfaces of the plane point should be examined.
3.13 Chemical, physical and mechanical properties of the contacts of the breaker pin It should meet the requirements of JB/T98603. 3.14 Appearance of the circuit breaker
a) The appearance should be good, without cracks and other defects b) The contact surface of the two contacts should be clean, without dust and other defects that hinder contact; c) The ferrous metal base should have a visible pre-coated layer; d) The rivets and joints should be firm and not loose or cracked; c) The spring tube should be flat and not be bent or twisted. 3.15 The circuit breaker should be waterproof and moisture-proof during transportation and storage. 316 The durability test time of the circuit breaker shall not be less than 250h. 4 Inspection rules
4.1 Inspection classification of circuit breakers
4. 1.1 Factory inspection
Breaker products are inspected according to the following factory test items. They are allowed to leave the factory after passing the inspection and are accompanied by a mark certifying the quality: a) Inspection of appearance and installation dimensions:
: b) Inspection of the spring tension of the circuit breaker contacts:
) Inspection of the insulation resistance of the circuit breaker
d) Inspection of the insulation dielectric strength of the circuit breaker, Www.bzxZ.net
e) Inspection of the insulation resistance of the circuit breaker:
f Inspection of the reverse firing performance.
4. 1. 2 Type test
Type test shall be carried out for the products of the breakers in one of the following cases: a) New products are finalized;
b) Products are modified, modified or the process and raw materials are changed;
Products are transferred to other factories or used for production for more than one year;
4.1.2.1 Products produced by pallet shall be inspected regularly, not less than once every two years;
4.1.2.1 Products undergoing type test shall be inspected from the time they are shipped out! Randomly select 9 pairs of products from the same batch of products that meet the inspection standards, and first inspect them according to the factory inspection items. The qualified products are divided into three groups and subjected to the following tests respectively: the first group of products undergoes reverse frequency vibration test, low temperature test, high temperature test and wet melting test; the second group of products undergoes black metal coating test, contact resistance test, and contact surface proximity test of two sealing points including contact joint proximity measurement; the third group of products undergoes durability test: 4.3 After the supply and demand are in accordance with the provisions of T2828, the acceptance is also carried out according to the method specified in T2828. The specific acceptance plan needs to be agreed upon by both parties. Marking, packaging, transportation, storage, and the manufacturer's name and trademark shall be clearly marked in a conspicuous position on the circuit breaker. 5.1 The product packaging box should indicate:
b) Manufacturer name and trademark:
b) Product model and name;
e) Quantity:
d) Manufacturing date
5.3 The packaging box must be placed in a packaging box with moisture-proof materials and must not be stacked. 5.4 The outer surface of the packaging box should be marked with:
3) Manufacturer name and address;
b) Product model and name;
c) Factory date; year
d) Overall dimensions: length × width × height, mm;
e) Dimensions: length × width × height, mm;
f) Number of containers:
) Place of shipment and receiving unit:
h) "Handle with care", "Moisture-proof".
5.5 The technical documents supplied with the product include: a) packing list; b) product factory certificate; c) instruction manual for use and maintenance.
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