QB/T 1614-2000 Flame-retardant insulated polyvinyl chloride cable ducts and accessories
Some standard content:
QB/T 1614—2000
This standard is a revised version of QB1614—1992 "Flame-retardant polyfluoroethylene cable ducts and accessories". It is not equivalent to the first edition of the international standard IEC1084-2-1 in 1996 "Cable duct series for electrical installation Part 2: Special requirements Part 1: Cable duct series for wall (ceiling) installation", and adds the technical indicators and test methods of relevant mandatory regulations in my country. The product performance part of this standard adopts the provisions of the relevant IEC standards, and the mechanical properties, combustion performance, electrical properties, and inspection rules of the product are greatly modified compared with the original standard QB1614-1992. This standard is proposed by the Industry Management Department of the State Bureau of Light Industry. This standard is under the jurisdiction of the National Plastic Products Standardization Center. The drafting units of this standard are: Guangdong Plastic Leather Industry Research Institute, Shunde Gudi Plastic Co., Ltd. The main drafters of this standard are: Li Yuanda, Xie Shixiong, and Zhao Xia. From the date of implementation of this standard, the industry standard QB1614-1992 "Flame-retardant polyvinyl fluoride wire duct and accessories" issued by the former Ministry of Light Industry shall be abolished.
1 Scope
Light Industry Industry Standard of the People's Republic of China
Flame-retardant insulated polyvinyl chloride wire duct and accessories QB/T 1614-—2000
neq IEC 1084-2-1:1996
Replaces QB1614—1992
This standard specifies the definition, classification, requirements, test methods, inspection rules and marking, packaging, transportation and storage of flame-retardant insulated wire ducts (hereinafter referred to as "wire ducts") and injection molding accessories made of polyvinyl chloride resin as the main raw material through extrusion. This standard applies to wire ducts and accessories used for installing wires (cables) in buildings and other devices. The use type is indicated in Appendix A. Cited standards
The clauses contained in the following standards constitute the clauses of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T2406-1993 Test method for burning performance of plastics Oxygen index method GB/T 2408--1996
GB/T 2828-1987
Test method for burning performance of plastics Horizontal method and vertical method Batch inspection counting sampling procedure and sampling table (applicable to continuous batch inspection) GB/T 8627-1988
Test method for smoke density of burning or decomposition of building materials 3 Definition
Wire duct #
Refers to a device with a square cross-section, a removable cover and a base, which can completely surround the wires installed therein. 4 Classification
4.1 The classification code consists of three digits. That is:
4.2 Classification by mechanical properties
Classification (first digit of the mark code)
4.3 Classification by use temperature
Classification (second and third digits of the mark code)
Approved by the State Bureau of Light Industry on 2000-03-30
Table 1 Classification of mechanical properties
Use stress
Table 2 Classification of use temperature
Transportation temperature
Installation temperature
Use temperature
—15～60
5～60
2000-08-01 implementation
5 Requirements
5.1 Appearance
QB/T1614—2000
The inner and outer walls of the product should be flat, free of bubbles, obvious impurities and variegated colors, and sharp parts that damage the wires. 5. 1. 1
5.1.2 The cover of the cable duct should be able to be opened by hand or with simple tools after being closed without damaging the cable duct. 5.1.3 The accessories should be able to cooperate with the cable duct during installation and not fall off during use. 5.1.4 The product logo should be clear and firm.
5.2 Dimension deviation
The dimensional deviation of the cable duct should comply with the provisions of Table 3.
Table 3 Dimension deviation
Trough width or groove height
4000 (can also be determined according to transportation and engineering
requirements)
5.2.2 The wall thickness of the accessories shall not be less than the wall thickness of the cable duct, and the deviation of the wall thickness of the accessories shall not be greater than the deviation of the wall thickness of the cable duct. 5.3 Performance
The performance of the cable duct and accessories shall comply with the requirements of Table 4. Table 4 Performance of cable duct and accessories
6 Test methods
6.1 Appearance
Load deformation performance
Strike performance
External load performance
Heat resistance
Oxygen index
Horizontal burning performance
Vertical burning performance
Smoke density level
Withstand voltage
Insulation resistance
6.1.1 Appearance shall be determined by feel and visual inspection under natural light. Wire
Da≤H/10 and Da≤10 mm
Dg≤W/10 and Dg≤10 mm
No visible breakage and cracks
Does not detach from the bracket
OI≥32
SDR≤75
No breakdown within 1 min
R≥1.0×10°n
Dimension deviation
Accessories and slot covers do not fall off
No visible breakage and cracks
01≥32
SDR≤75
1 min No breakdown inside
R≥1.0×10°2
6.1.2 The product mark is firm. First wipe it with a hand-held cotton cloth soaked in water for 15s, then wipe it with a cotton cloth soaked in gasoline for 15s and wipe it dry without falling off mm
QB/T 1614—2000
6.2 The length is measured with a steel tape measure with a minimum scale of 1mm. Other dimensions are measured with a vernier caliper with a minimum scale of 0.02mm. 6.3 Load deformation test
6.3.1 The sample is 3 250mm long covered wire ducts and 3 accessories, a total of 2 groups. 6.3.2 Use a fixing element with a minimum outer diameter of 10mm (referring to the screw head and washer) to firmly install the sample on a rigid bracket and install the accessories at the same time.
6.3.3 Use one group of samples to be fixed at position A in Figure 1. The wire duct is evenly loaded with soft insulated wires (or conductors) of the same length as the wire duct. The weight of the wire loaded in each meter of the wire duct is: 0.13kg/cm2 multiplied by the cross-sectional area of the wire duct. After loading, the entire device is kept at (60±2)℃ for 2 hours, and the deformation DA is immediately measured with an accuracy of 0.5mm. Another group of samples is fixed at position B in Figure 1 and the test of 6.3.3 is repeated. 6.4 Impact test
6.4.1 The samples are 3 accessories and 3 wire ducts with a length of 250mm and covered. The samples are placed at room temperature for 24 hours. 6.4.2 Use the test machine shown in Figure 2 to place on a 40mm thick foamed (density 450kg/m2550kg/m) rubber pad. The test temperature is ±1℃ of the lowest storage and transportation temperature. The wire duct and accessories are assembled together and the test machine is kept at the test temperature for 2 hours before the test is carried out. If the testing machine is placed at room temperature, the time from leaving the constant temperature environment to completing a test for each sample is required to be no more than 10 seconds. 6.4.3 See Table 5 for impact energy requirements.
Table 5 Impact Energy
Mechanical Property Classification
Hammer Weight/kg
Drop Height/mm
100±1
100±1
300±1
Equivalent Energy J
6.4.4 After constant temperature, turn the wire duct cover (front of the accessory) upward, first punch the center point of the sample once, then immediately move the sample horizontally and punch the edge once.
6.5 External Load Test
6.5.1 The sample is a wire duct with a length of (250±5) mm and a cover. 6.5.2 Fix the cable duct on the bracket (see Figure 3) with $2.0mm steel nails (3.0mm steel nails for slot width not less than 60mm) and keep it at (40±2)℃ for 2h.
6.5.3 Apply a force of (100±5)N to the cable duct at a 90° angle to the cable duct cover surface in the direction of maximum force, and the line of force passes through the fixing element, and keep it for 60+s.
6.6 Heat resistance test of accessories
Cut the plane (front) part of the three accessories into 80mm×80mm samples. If the size of the accessories is not enough, place the accessories directly as samples with the front side facing down and the opening facing up on the support table of the heat resistance tester shown in Figure 4. Place the entire device in an environment of (60±2)℃. After the temperature stabilizes, press a 20N load with a R2.5mm indenter on the middle part of the sample. Keep it for 1h, then take it out and cool it at room temperature, and measure the diameter of the indentation on the sample.
6.7 Combustion performance
6.7.1 Oxygen index test
Perform in accordance with GB/T2406.
6.7.2 Horizontal combustion and vertical combustion tests
Perform in accordance with GB/T2408.
6.7.3 Smoke density test
Perform according to GB/T8627.
6.8 Electrical performance
6.8.1 The sample consists of 3 600mm long covered wire ducts (which can be installed into 600mm length by two sections of wire ducts and accessories) and 3 accessories as a group, with a total of 2 groups.
T KANT KAca
6.8.2 Sample pretreatment
QB/T1614--2000
Put the sample at 20℃ (or any temperature between 20℃ and 30℃) for 4h, then keep it at the same temperature and humidity of 91% to 95% for 48h, and test it at the same temperature. 6.8.3 Sample assembly
Immediately fill a group of treated samples with conductive metal balls (d 2.5 mm) and insert an insulated wire with a 12 mm long conductive contact with the metal balls as one pole (see Figure 5). Position “A
Rigid support
Figure 1 Load deformation test
Pot “B
Pot base 10kg
Section A—B
QB/T 1614—2000
Steel intermediate pad weighing 100 g
Edges slightly chamfered
Figure 2 Impact test device
QB/T 1614—2000
Figure 3 External load test
If necessary, another insulated wire of the same type can be inserted into the metal ball. The conductive contact ends of the two wires should be more than 12.5mm apart. The resistance between the two wires should be less than 100Ω.
Then wrap a layer of conductive metal foil or mesh tightly around the outside of the sample as the other pole. 6.8.4 Insulation resistance test
Use a group of samples prepared according to 6.8.3, and apply a voltage of DC500V between the two electrodes for 1 minute to measure the insulation resistance. 6.8.5 Withstand voltage test
Use a group of samples prepared according to 6.8.3, and apply a voltage of 50Hz, 2500V between the electrodes for 1 minute. The equipment used should be able to output a current of not less than 200mA at 50Hz, 1250V. The test voltage should start from less than 1250V and rise to the required value as soon as possible. 709
Test point
QB/T1614—2000
Steel support
Figure 4 Heat resistance test device
Metal sheet (mesh)
8888888888888888888888888888888888888888888888888888 Covered wire trough
Test point
Metal ball
10 μ A ammeter for measuring insulation resistance
Figure 5 Electrical insulation test device
Test point
7 Inspection rules
QB/T 1614—2000
7.1 Products must be inspected by the quality inspection department of the manufacturer and be accompanied by a certificate of conformity before they can leave the factory. 7.2 Batch
Products of the same specification produced under the same raw materials, formula and process conditions are considered as a batch, and the quantity of each batch shall not exceed 50t. If the production quantity is small and the production period of 7 days is less than 50t, the 7-day output shall be considered as a batch. 7.3 Sampling
7.3.1 The inspection of items 5.1 and 5.2 shall adopt the normal inspection single sampling plan according to GB/T2828, take the general inspection level I, and the qualified quality level AQL=6.5, see Table 6.
Table 6 Sampling plan
Batch range N
≤150
150~280
281~500
501~1200
1 201-~3 200
3201~10000
Sample size n
Qualified judgment number A
7.3.2 Other items Randomly select sufficient samples from qualified products in the counting sampling for testing 7.4 Factory inspection
The factory inspection items are the mechanical properties in 5.15.2 and 5.3. 7.5 Type inspection
Number of unqualified judgment R.
Type inspection items are all items specified in Chapter 5. Type inspection should generally be carried out in any of the following situations. a) Trial design and identification of new products or old products transferred to the factory for production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance; c) During normal production, inspection should be carried out at least once every six months; d) When the product is resumed after long-term suspension of production; e) When the factory inspection results are significantly different from the last type inspection; f) When the national quality and technical supervision agency proposes a requirement for type inspection. 7.6 Judgment rules
5.1,5.2 shall be judged according to the provisions of Table 6. If one of the remaining performance items fails to meet the target, double samples can be randomly drawn from the original batch for retesting of the item. If it still fails, the batch is judged to be unqualified. 8 Marking, packaging, transportation, storage
8.1 Marking
8.1.1 The following should be marked on the wire duct for every 1.5m length: factory name, trademark, classification mark code, fire production license number. 8.1.2 The product should have a certificate of conformity, and the outer packaging should be marked with: product name, specification, implementation standard number, trademark, factory name and address. 8.2 Packaging
Wire ducts should be packaged with plastic film and tied firmly, and accessories should be packaged in paper boxes or plastic bags. The product should have instructions. 8.3 Transportation
Products should be kept away from exposure to the sun, rain and mechanical impact, and should be loaded and unloaded with care. 8.4 Storage
Products should not be stored in the open air. The warehouse should be ventilated and dry, at least 1m away from heat sources, and the stacking height should not exceed 1.5m. 711
Figure A number
1.7,11.13
Open cover
QB/T1614—-2000
Appendix A
(Suggestive appendix)
Wall (ceiling) installation product usage type
Table A1 Wall (ceiling) installation product usage type definition
Wire duct and accessories
Wire duct and accessories
Wire duct and accessories
Wire and accessories
Wire, cable, insulated wire, installation and wiring
Wire, cable, insulated wire, installation and wiring
Wire, cable, insulated wire, installation and wiring
Wire, cable, insulated wire, installation and wiring
Figure A1 Product usage type (reference Table A1)
(Ceiling) exposed installation. Horizontal, vertical
direct, indirect
wall (ceiling) surface installation. Ceiling
wall (ceiling) concealed installation. Horizontal, vertical wall (ceiling) corner surface installation3. Apply 50Hz, 2500V voltage between electrodes for 1min. The equipment used should be able to output no less than 200mA current at 50Hz, 1250V. The test voltage should start from less than 1250V and rise to the required value as quickly as possible. 709
Test point
QB/T1614—2000
Steel support
Figure 4 Heat resistance test device
Metal sheet (mesh)
8888888888888888888888888888888888888888888888888888 Covered wire trough
Test point
Metal ball
10 μ A ammeter for measuring insulation resistance
Figure 5 Electrical insulation test device
Test point
7 Inspection rules
QB/T 1614—2000
7.1 Products must be inspected by the quality inspection department of the manufacturer and be accompanied by a certificate of conformity before they can leave the factory. 7.2 Batch
Products of the same specification produced under the same raw materials, formula and process conditions are considered as a batch, and the quantity of each batch shall not exceed 50t. If the production quantity is small and the production period of 7 days is less than 50t, the 7-day output shall be considered as a batch. 7.3 Sampling
7.3.1 The inspection of items 5.1 and 5.2 shall adopt the normal inspection single sampling plan according to GB/T2828, take the general inspection level I, and the qualified quality level AQL=6.5, see Table 6.
Table 6 Sampling plan
Batch range N
≤150
150~280
281~500
501~1200
1 201-~3 200
3201~10000
Sample size n
Qualified judgment number A
7.3.2 Other items Randomly select sufficient samples from qualified products in the counting sampling for testing 7.4 Factory inspection
The factory inspection items are the mechanical properties in 5.15.2 and 5.3. 7.5 Type inspection
Number of unqualified judgment R.
Type inspection items are all items specified in Chapter 5. Type inspection should generally be carried out in any of the following situations. a) Trial design and identification of new products or old products transferred to the factory for production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance; c) During normal production, inspection should be carried out at least once every six months; d) When the product is resumed after long-term suspension of production; e) When the factory inspection results are significantly different from the last type inspection; f) When the national quality and technical supervision agency proposes a requirement for type inspection. 7.6 Judgment rules
5.1,5.2 shall be judged according to the provisions of Table 6. If one of the remaining performance items fails to meet the target, double samples can be randomly drawn from the original batch for retesting of the item. If it still fails, the batch is judged to be unqualified. 8 Marking, packaging, transportation, storage
8.1 Marking
8.1.1 The following should be marked on the wire duct for every 1.5m length: factory name, trademark, classification mark code, fire production license number. 8.1.2 The product should have a certificate of conformity, and the outer packaging should be marked with: product name, specification, implementation standard number, trademark, factory name and address. 8.2 Packaging
Wire ducts should be packaged with plastic film and tied firmly, and accessories should be packaged in paper boxes or plastic bags. The product should have instructions. 8.3 Transportation
Products should be kept away from exposure to the sun, rain and mechanical impact, and should be loaded and unloaded with care. 8.4 Storage
Products should not be stored in the open air. The warehouse should be ventilated and dry, at least 1m away from heat sources, and the stacking height should not exceed 1.5m. 711
Figure A number
1.7,11.13
Open cover
QB/T1614—-2000
Appendix A
(Suggestive appendix)
Wall (ceiling) installation product usage type
Table A1 Wall (ceiling) installation product usage type definition
Wire duct and accessories
Wire duct and accessories
Wire duct and accessories
Wire and accessories
Wire, cable, insulated wire, installation and wiring
Wire, cable, insulated wire, installation and wiring
Wire, cable, insulated wire, installation and wiring
Wire, cable, insulated wire, installation and wiring
Figure A1 Product usage type (reference Table A1)
(Ceiling) exposed installation. Horizontal, vertical
direct, indirect
wall (ceiling) surface installation. Ceiling
wall (ceiling) concealed installation. Horizontal, vertical wall (ceiling) corner surface installation3. Apply 50Hz, 2500V voltage between electrodes for 1min. The equipment used should be able to output no less than 200mA current at 50Hz, 1250V. The test voltage should start from less than 1250V and rise to the required value as quickly as possible. 709
Test point
QB/T1614—2000
Steel support
Figure 4 Heat resistance test device
Metal sheet (mesh)
8888888888888888888888888888888888888888888888888888 Covered wire trough
Test point
Metal ball
10 μ A ammeter for measuring insulation resistance
Figure 5 Electrical insulation test device
Test point
7 Inspection rules
QB/T 1614—2000
7.1 Products must be inspected by the quality inspection department of the manufacturer and be accompanied by a certificate of conformity before they can leave the factory. 7.2 Batch
Products of the same specification produced under the same raw materials, formula and process conditions are considered as a batch, and the quantity of each batch shall not exceed 50t. If the production quantity is small and the production period of 7 days is less than 50t, the 7-day output shall be considered as a batch. 7.3 Sampling
7.3.1 The inspection of items 5.1 and 5.2 shall adopt the normal inspection single sampling plan according to GB/T2828, take the general inspection level I, and the qualified quality level AQL=6.5, see Table 6.
Table 6 Sampling plan
Batch range N
≤150
150~280
281~500
501~1200
1 201-~3 200
3201~10000
Sample size n
Qualified judgment number A
7.3.2 Other items Randomly select sufficient samples from qualified products in the counting sampling for testing 7.4 Factory inspection
The factory inspection items are the mechanical properties in 5.15.2 and 5.3. 7.5 Type inspection
Number of unqualified judgment R.
Type inspection items are all items specified in Chapter 5. Type inspection should generally be carried out in any of the following situations. a) Trial design and identification of new products or old products transferred to the factory for production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance; c) During normal production, inspection should be carried out at least once every six months; d) When the product is resumed after long-term suspension of production; e) When the factory inspection results are significantly different from the last type inspection; f) When the national quality and technical supervision agency proposes a requirement for type inspection. 7.6 Judgment rules
5.1,5.2 shall be judged according to the provisions of Table 6. If one of the remaining performance items fails to meet the target, double samples can be randomly drawn from the original batch for retesting of the item. If it still fails, the batch is judged to be unqualified. 8 Marking, packaging, transportation, storage
8.1 Marking
8.1.1 The following should be marked on the wire duct for every 1.5m length: factory name, trademark, classification mark code, fire production license number. 8.1.2 The product should have a certificate of conformity, and the outer packaging should be marked with: product name, specification, implementation standard number, trademark, factory name and address. 8.2 Packaging
Wire ducts should be packaged with plastic film and tied firmly, and accessories should be packaged in paper boxes or plastic bags. The product should have instructions. 8.3 Transportation
Products should be kept away from exposure to the sun, rain and mechanical impact, and should be loaded and unloaded with care. 8.4 Storage
Products should not be stored in the open air. The warehouse should be ventilated and dry, at least 1m away from heat sources, and the stacking height should not exceed 1.5m. 711
Figure A number
1.7,11.13
Open cover
QB/T1614—-2000
Appendix A
(Suggestive appendix)
Wall (ceiling) installation product usage type
Table A1 Wall (ceiling) installation product usage type definition
Wire duct and accessories
Wire duct and accessories
Wire duct and accessories
Wire and accessories
Wire, cable, insulated wire, installation and wiring
Wire, cable, insulated wire, installation and wiring
Wire, cable, insulated wire, installation and wiring
Wire, cable, insulated wire, installation and wiring
Figure A1 Product usage type (reference Table A1)
(Ceiling) exposed installation. Horizontal, vertical
direct, indirect
wall (ceiling) surface installation. Ceiling
wall (ceiling) concealed installation. Horizontal, vertical wall (ceiling) corner surface installation13
Opening surface
QB/T1614—-2000
Appendix A
(Suggested Appendix)
Wall (ceiling) installation product use type
Table A1 Wall (ceiling) installation product use type definition
Wire duct and accessories
Wire duct and accessories
Wire duct and accessories
Wire and accessoriesbzxz.net
Wire, cable, insulated wire, installation and wiring
Wire, cable, insulated wire, installation and wiring
Wire, cable, insulated wire, installation and wiring
Figure A1 Product use type (reference Table A1)
(Ceiling) surface installation. Horizontal, vertical
Direct, indirect
Wall (ceiling) surface installation. Ceiling
Wall (ceiling) concealed installation. Horizontal, vertical wall (ceiling) corner exposed installation13
Opening surface
QB/T1614—-2000
Appendix A
(Suggested Appendix)
Wall (ceiling) installation product use type
Table A1 Wall (ceiling) installation product use type definition
Wire duct and accessories
Wire duct and accessories
Wire duct and accessories
Wire and accessories
Wire, cable, insulated wire, installation and wiring
Wire, cable, insulated wire, installation and wiring
Wire, cable, insulated wire, installation and wiring
Figure A1 Product use type (reference Table A1)
(Ceiling) surface installation. Horizontal, vertical
Direct, indirect
Wall (ceiling) surface installation. Ceiling
Wall (ceiling) concealed installation. Horizontal, vertical wall (ceiling) corner exposed installation
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