GB/T 15411-1994 General technical requirements for explosion-proof televisions
Some standard content:
National Standard of the People's Republic of China
GB/T15411-—1994
Generic specification for explosiveatmospheresappliedTv
Published on December 6, 1994
State Administration of Technical Supervision
Implementation on June 1, 1995
National Standard of the People's Republic of China
Generic specification for explosiveatmospheresappliedTV
1 Subject content and scope of application
GB/T15411—1994
This standard specifies the product classification, technical requirements and test methods, inspection rules, as well as marking, packaging, transportation and storage of explosion-proof applied TV equipment (hereinafter referred to as equipment).
This standard applies to explosive gas environments in factories with a temperature of -20 to +60°C and an air pressure of 86 to 106 kPa and equipment used underground in coal mines.
2 Reference standards
GB191 Pictorial signs for packaging, storage and transportation
GB2423.1 Japan
Basic environmental test regulations for electric and electronic products Test A: Low temperature test method GB2423.2
Basic environmental test regulations for electric and electronic products Test B: High temperature test method Basic environmental test regulations for electric and electronic products Test Db: Alternating damp heat test method GB2423.5 Japan
Basic environmental test regulations for electric and electronic products Test Ea: Impact test method Basic environmental test regulations for electric and electronic products Test Ed: Free fall test method GB2423.8E
Basic environmental test regulations for electric and electronic products Test Fc: Vibration (sine) )Test methods GB2423.10
GB3836.1 General requirements for explosion-proof electrical equipment for explosive atmospheres GB3836.2 Explosion-proof electrical equipment for explosive atmospheres Flameproof electrical equipment "d" GB3836.3 Explosion-proof electrical equipment for explosive atmospheres Increased safety electrical equipment \e" GB3836.4 Explosion-proof electrical equipment for explosive atmospheres Intrinsically safe circuits and electrical equipment "1" GB6587.6 Transportation test for electronic measuring instruments GB12322 Reliability test method for general application television equipment GB/T13953 Explosion-proof performance test method for flameproof application television equipment GB14861 Safety requirements and test methods for application television equipment 3 Terminology
3.1 Explosion-proof application TV equipment
TV equipment designed and manufactured according to specified conditions, and will not cause the explosion of the surrounding explosive mixture. 3.2 Flameproof explosion-proof application TV equipment (abbreviated as: flameproof equipment) Equipment with flameproof enclosure.
3.3 Increased safety explosion-proof application TV equipment (abbreviated as: increased safety equipment) Equipment that will not produce arcs, sparks or high temperatures that may ignite explosive mixtures under normal operating conditions, and takes structural measures to improve the safety level to avoid these phenomena under normal and recognized overload conditions. Approved by the State Bureau of Technical Supervision on December 6, 1994 and implemented on June 1, 1995
GB/T15411—1994
3.4 Essence Safety explosion-proof application television equipment (abbreviated as: intrinsically safe equipment) is equipment whose entire circuit is an intrinsically safe circuit (abbreviated as intrinsically safe circuit). 4 Product classification
4.1 Equipment can be divided into two categories according to its use environment. 4.1.1 Class I equipment, which is suitable for underground coal mines. 4.1.2 Class I equipment, which is suitable for factories. According to its maximum test safety gap or minimum ignition current ratio for explosive gas mixtures, it can be divided into three levels: A, B, and C, and according to its maximum surface temperature, it can be divided into three groups: 85, 100, and 135°C. Note: For flammable gas, vapor level, and temperature group, see Table 1 and Appendix A (reference) in GB3836.1. 4.2 Equipment is divided into three categories according to its explosion-proof type. 4.2.1 Flameproof equipment d".
4.2.2 Increased safety equipment "e".
4.2.3 Intrinsically safe equipment "i". According to the use place and safety degree of the intrinsically safe circuit, it can be divided into two levels: ia and ib. 4.2.3.1ia level
Equipment that cannot ignite explosive gas mixtures in normal operation, one fault and two faults. In normal operation, the safety factor is 2.0.
In case of one fault, the safety factor is 1.5.
In case of two faults, the safety factor is 1.0.
Contacts with sparks in normal operation must be equipped with flameproof enclosures, airtight enclosures or double the safety factor. 4.2.3.2b level
Equipment that cannot ignite explosive gas mixtures in normal operation and one fault. In normal operation, the safety factor is 2.0.| |tt||When there is one fault, the safety factor is 1.5.
Contacts with sparks in normal operation must be protected by flameproof enclosures or airtight enclosures, and measures for self-display of faults must be taken. When there is one fault, the safety factor is 1.0.
Note: When calculating intrinsically safe circuits, the minimum ignition current and voltage curves can be found in Appendix A (Supplement) of GB3836.4. 4.3 Explosion-proof category: The explosion-proof category of the equipment should be specified in the product standard. 5 Technical requirements and test methods
5.1 Appearance
5.1.1 Requirements
5.1.1.1 The appearance of the equipment should be neat and tidy, and there should be no obvious dents, scratches, cracks, deformations, etc. on the surface. 5.1.1.2 The metal parts of the equipment should not be rusted or have other mechanical damages, and the exposed chrome-plated screws should be smooth and bright, and the fasteners should not be loose. 5.1.2 Test method
Inspect by visual inspection.
5.2 Electrical performance
The electrical performance requirements and test methods of the equipment shall comply with the relevant national standards and shall be specified in the product standards. 5.3 Explosion-proof performance
5.3.1 Flameproof equipment
5.3.1.1 Shell material
5.3.1.1.1 Requirements
The shell material of the flameproof equipment shall comply with the provisions of Chapter 7 and Chapter 8 of GB3836.1 and Chapter 3 of GB3836.2. 5.3.1.1.2 Test method
GB/T15411—1994
The material analysis test shall be carried out in accordance with the provisions of Article 4.3 of GB/T13953; a.
The impact test shall be carried out in accordance with GB3836 .1 in accordance with Article 21.1; b.
The thermal stability test shall be carried out in accordance with Article 4.8 of GB/T13953. The explosion-proof performance of the sample shall not be affected after the test; c.
Plastic shell insulation resistance test shall be carried out in accordance with Article 4.5 of GB/T13953. d.
5.3.1.2 Shell strength
5.3.1.2.1 Requirements
105Pas
The shell shall be able to withstand 1.5 times the reference pressure measured in the test method of Article 5.3.1.2.2 of this standard, and shall not be less than 3.5×b.
When the shell is subjected to dynamic strength test, there shall be no damage and permanent deformation that affects the explosion-proof performance, and the gap of the explosion-proof joint surface shall comply with the provisions of Tables 1 to 4 of GB3836.2; c. When the shell is subjected to static strength test with water, there shall be no continuous dripping. Note: dripping one drop of water every interval greater than 10s is considered as discontinuous dripping. 5.3.1.2.2 Test method
The strength test of the shell shall be carried out in accordance with the provisions of Article 4.2 and Article 4.12.3 of GB/T13953. 5.3.1.3 Flameproof joint
5.3.1.3.1 Requirements
The structural parameters of the flameproof joint of flameproof equipment shall comply with the provisions of Chapter 6 of GB3836.2. 5.3.1.3.2 Test method
Inspect by measurement and visual inspection.
5.3.1.4 Gasket
5.3.1.4.1 Requirements
The gasket of flameproof equipment shall comply with the provisions of Chapter 7 of GB3836.2. 5.3.1.4.2 Test method
Inspect by measurement and visual inspection.
5.3.1.5 Glue seal
5.3.1.5.1 Requirements
When the shell components of flameproof equipment adopt the glue seal structure, the glue seal shall comply with the provisions of Articles 8.1 and 8.2 of GB3836.2. The glue seal shall be subjected to the thermal stability test, and the flameproof performance shall still be guaranteed after the test. 5.3.1.5.2 Test method
The thermal stability test of the glue seal shall be carried out in accordance with the provisions of Article 4.8 of GB/T13953. Other requirements shall be checked by measurement and visual inspection.
5.3.1.6 Transparent parts
5.3.1.6.1 Requirements
The transparent parts used in flameproof equipment shall comply with the provisions of Chapter 9 of GB3836.2. 5.3.1.6.2 Test method
The impact test of transparent parts shall be carried out in accordance with the provisions of Article 4.1.1 of GB/T13953. Other requirements shall be checked by measurement. 5.3.1.7 Fastening of the shell
5.3.1.7.1 Requirements
The fastening of the shell of flameproof equipment and the fasteners shall comply with the provisions of Chapter 9 of GB3836.1 and Chapter 11 of GB3836.2. 5.3.1.7.2 Test method
Inspect by measurement and visual inspection.
5.3.1.8 Lead-in device
5.3.1.8.1 Requirements
GB/T15411—1994
The lead-in method and the lead-in device used for flameproof equipment cables and wires shall comply with the provisions of Chapter 14 of GB3836.1 and Chapter 12 of GB3836.2;Www.bzxZ.net
b. After the clamping test of the lead-in device for non-armored cables and wires, the displacement size shall not be greater than 6mm, and the parts of the lead-in device shall not be damaged (deformation of the sealing ring). Except for ); After the clamping test of armored cable and shielded wire entry devices, the armor layer should have almost no displacement, and the parts of the entry devices should not be damaged;
c. After the test specified in Article 5.3.1.8.2c of this standard for sealing ring type or metal sealing ring type entry devices, there should be no trace of water drops on the absorbent paper and the parts of the entry devices should not be damaged (except for sealing rings); After the test specified in Article 5.3.1.8.2d of this standard for cast curing filler sealed entry devices, there should be no trace of water drops on the absorbent paper. d.
5.3.1.8.2 Test method
The clamping test of cable and wire entry devices shall be carried out in accordance with the provisions of Article 4.6 of GB/T13953; a.
The aging test of rubber materials shall be carried out in accordance with the provisions of Article 4.4 of GB/T13953; b.
c.The test of sealing ring type or metal sealing ring type entry devices shall be carried out in accordance with the provisions of Article 4.10.1 of GB/T13953; d.
The sealing performance test of cast-curing filler sealed entry devices shall be carried out in accordance with the provisions of Article 4.10.2 of GB/T13953. 5.3.1.9 Junction box
5.3.1.9.1 Requirements
When the indirect introduction method is used for the cables and wires of flameproof equipment, the junction box used shall comply with the provisions of Articles 13.3 and 13.4 of GB3836.1 and Chapter 13 of GB3836.2. 5.3.1.9.2 Test method
Inspect by measurement and visual inspection.
5.3.1.10 Interlocking device and warning sign
5.3.1.10.1 Requirements
When sparks or arcs are generated during normal operation of flameproof equipment, interlocking devices and warning signs that comply with the provisions of Chapter 10 of GB3836.1 and Chapter 14 of GB3836.2 shall be provided. 5.3.1.10.2 Test method
Inspect by measurement and visual inspection.
5.3.1.11 Flameproof performance
5.3.1.11.1 Requirements
No explosion transmission phenomenon should occur during the flameproof performance test of flameproof equipment. 5.3.1.11.2 Test method
Perform in accordance with the provisions of Article 4.12.4 of GB/T13953. 5.3.1.12 Insulating sleeve and wiring
5.3.1.12.1 Requirements
The insulating sleeve and wiring of flameproof equipment shall comply with the provisions of Chapter 11 and Chapter 16 of GB3836.1. 5.3.1.12.2 Test method
a. Check by visual inspection;
b. The torsion test of the connector shall be carried out in accordance with the provisions of Article 4.11 of GB/T13953. 5.3.1.13 Drop test
5.3.1.13.1 Requirements
Portable equipment shall be subjected to a drop test that does not affect the explosion-proof performance. After the test, no deformation or damage that affects the explosion-proof performance shall occur, but the equipment is allowed to have local damage that does not affect the explosion-proof performance, such as: paint peeling, heat sink or other similar parts breaking, etc. 5.3.1.13.2 Test method
A fully assembled equipment is freely dropped from a height of 1m onto a cement platform for 4 drops. The position of the equipment before the fall shall be specified in the 4
product standard.
5.3.2 Increased safety equipment
5.3.2.1 Shell material
5.3.2.1.1 Requirements
GB/T15411—1994
The shell material of increased safety equipment shall comply with the provisions of Chapter 7 and Chapter 8 of GB3836.1. 5.3.2.1.2 Test method
Perform in accordance with the provisions of Article 5.3.1.1.2 of this standard. 5.3.2.2 Protection level of shell
The protection level of the shell of increased safety equipment shall comply with the provisions of Chapter 11 of GB3836.3. 5.3.2.3 Fastening and fasteners
5.3.2.3.1 Requirements
Class I equipment shall comply with the provisions of Article 9.2 of GB3836.1. Class II equipment may be reinforced by ordinary methods. 5.3.2.3.2 Test method
Inspect by measurement and visual inspection.
5.3.2.4 Connectors
5.3.2.4.1 Requirements
The connectors of increased safety equipment shall comply with the provisions of Chapter 3 of GB3836.3.5.3.2.4.2 Test method
Inspect by visual inspection.
5.3.2.5 Internal wire connection
5.3.2.5.1 Requirements
The connection of internal wires of increased safety equipment shall comply with the provisions of Chapter 4 and Chapter 10 of GB3836.3. 5.3.2.5.2 Test method
Inspect by visual inspection.
5.3.2.6 Clearance
5.3.2.6.1 Requirements
The clearance of increased safety equipment shall comply with the provisions of Chapter 5 of GB3836.3. 5.3.2.6.2 Test method
Check by measurement.
5.3.2.7 Creepage distance
5.3.2.7.1 Requirements
The creepage distance of increased safety equipment shall comply with the provisions of Chapter 6 of GB3836.3. 5.3.2.7.2 Test method
Check by measurement.
5.3.2.8 Limit temperature
5.3.2.8.1 Requirements
In addition to complying with the provisions of Article 5.4.1 of this standard, the limit temperature of increased safety equipment shall also comply with the provisions of Chapter 9 of GB3836.3. 5.3.2.8.2 Test method
Inspect by measuring method.
5.3.2.9 Drop test
The drop test requirements and methods for portable increased safety equipment shall be carried out in accordance with the provisions of Article 5.3.1.13 of this standard. 5.3.3 Intrinsically safe equipment
5.3.3.1 Shell material
5.3.3.1.1 Requirements
GB/T15411—1994
The shell material of intrinsically safe equipment shall comply with the provisions of Articles 7.2 and 8.1 of GB3836.1. 5.3.3.1.2 Test method
a. The insulation resistance test of plastic shell shall be carried out in accordance with the provisions of Article 5.3.1.1.2d of this standard; b. The material analysis test of light alloy shell shall be carried out in accordance with the provisions of Article 5.3.1.1.2a of this standard. 5.3.3.2 Protection level of enclosure
The protection level of enclosure of intrinsically safe equipment shall comply with the provisions of Article 4.4 of GB3836.4. 5.3.3.3 Installation of components
5.3.3.3.1 Requirements
The installation of components inside intrinsically safe equipment shall comply with the provisions of Article 4.3 of GB3836.4. 5.3.3.3.2 Test method
Inspect by visual inspection.
5.3.3.4 External connection
5.3.3.4.1 Requirements
The connection between intrinsically safe equipment and related equipment and the outside shall comply with the provisions of Article 4.5 and Article 9.2.2 of GB3836.4. 5.3.3.4.2 Test method
Inspect the junction box, terminal blocks and connectors by measurement and visual inspection respectively. 5.3.3.5 Electrical clearance and creepage distance
5.3.3.5.1 Requirements
The electrical clearance and creepage distance of intrinsically safe equipment shall comply with the provisions of Article 4.6 of GB3836.4. 5.3.3.5.2 Test method
Inspect by measurement and visual inspection.
5.3.3.6 Glue sealing
5.3.3.6.1 Requirements
When the exposed conductors in intrinsically safe equipment are sealed with insulating materials, the provisions of Article 4.7 of GB3836.4 shall be met, and the thickness of the glue a.
seal shall not be less than 3mm;
b. Insulation withstand voltage test: arcing and breakdown shall not occur after 1 minute of test at 500V test voltage. 5.3.3.6.2 Test method
a. Use measurement and visual inspection to check the spacing before glue sealing and the thickness of glue sealing respectively: b. Insulation withstand voltage test: Between the ground and the glue sealing layer, an adjustable power supply with a power of not less than 500W is used to feed the specified test voltage. The test voltage shall gradually rise to the specified value to avoid transient changes. Maintain the specified test voltage for 1 minute, then steadily drop to zero volts, and then disconnect the test power supply.
5.3.3.7 Circuit grounding
5.3.3.7.1 Requirements
The grounding of the intrinsically safe circuit of intrinsically safe equipment shall comply with the provisions of Article 4.8 of GB3836.4. 5.3.3.7.2 Test method
Inspect by visual inspection.
5.3.3.8 Insulation
5.3.3.8.1 Requirements
The insulation between the intrinsically safe circuit and the frame, grounding part and non-intrinsically safe circuit of the equipment shall comply with the provisions of Article 4.9 of GB3836.4. Insulation withstand voltage test, arcing and breakdown shall not occur after 1 minute of testing at the specified voltage. b.
5.3.3.8.2 Test method
GB/T15411—1994
Insulation withstand voltage test: Between the tested parts, an adjustable power supply with a power of not less than 500W is used to feed the specified test voltage. The test voltage should gradually rise to the specified value to avoid transient changes. Maintain the specified test voltage for 1 minute. Then steadily drop to zero volts and disconnect the test power supply.
5.3.3.9 Internal wires
5.3.3.9.1 Requirements
a. The wires used inside intrinsically safe equipment should comply with the provisions of Article 4.10 and Article 9.2.1 of GB3836.4; b. The withstand voltage test should comply with the provisions of Article 5.3.3.8.1b of this standard. 5.3.3.9.2 Test method
a. Check the internal wiring and the color of the wire by visual inspection; b. The withstand voltage test of the wire shall be carried out in accordance with the provisions of Article 5.3.3.8.2 of this standard. 5.3.3.10 Safety barrier
5.3.3.10.1 Requirements
One of the associated equipment of the intrinsically safe equipment is the safety barrier (which is a reliable component), and the design shall comply with the provisions of Articles 7.1 to 7.6 of GB3836.4.
5.3.3.10.2 Test method
Carry out in accordance with the provisions of Article 7.7 of GB3836.4. 5.3.3.11 Spark test
5.3.3.11.1 Requirements
The intrinsically safe equipment shall be subjected to a spark test. The spark test requirements shall comply with the provisions of Articles 8.1, 8.2 and 8.3 of GB3836.4.
5.3.3.11.2 Test method
Perform in accordance with the provisions of Article 8.4 of GB3836.4. 5.3.3.12 Temperature test
5.3.3.12.1 Requirements
The maximum surface temperature of components and wires used in intrinsically safe circuits and equipment shall not be higher than the maximum surface temperature specified in Table 1 of GB3836.1.
5.3.3.12.2 Test method
Use the measurement method to check the maximum surface temperature of components and wires in normal working and fault conditions of intrinsically safe circuits and equipment. 5.3.3.13 Drop test
The drop test requirements and methods for portable intrinsically safe equipment shall be carried out in accordance with the provisions of Article 5.3.1.13 of this standard. 5.4 Safety
In addition to complying with the provisions of this standard, the safety requirements and test methods of the equipment shall also comply with the provisions of GB14861. 5.4.1 Temperature
5.4.1.1 Requirements
a. The maximum permissible surface temperature of the equipment shall comply with the provisions of Article 4.1 of GB3836.1; b. The local maximum surface temperature of the equipment shall comply with the provisions of Article 4.2 of GB3836.1. 5.4.1.2 Test method
The temperature test of the equipment shall be carried out in accordance with the provisions of Article 24.1 of GB3836.1. 5.4.2 Grounding
5.4.2.1 Requirements
The grounding of the equipment shall comply with the provisions of Chapter 15 of GB3836.1. 5.4.2.2 Test method
Inspect by measurement and visual inspection.
5.5 Reliability
5.5.1 Requirements
GB/T15411—1994
Reliability requirements are expressed by the lower limit value (G) of the assumed value of the mean time between failures (MTBF). The reliability index of the equipment shall be specified in the product standard.
5.5.2 Test method
The reliability test method of the equipment shall be carried out in accordance with the provisions of GB12322. After the test, the explosion-proof performance of the equipment shall still comply with the provisions of Article 5.3 of this standard, and no failure is allowed. 5.6 Environmental adaptability
This standard only specifies the basic environmental adaptability requirements and test methods of the equipment, and the special environmental adaptability requirements and test methods shall be specified in the product standard.
5.6.1 Requirements
5.6.1.1 The specific requirements of the environmental adaptability test of the equipment, such as the severity level, intermediate detection, recovery conditions, and final detection, shall be specified in the product standard.
5.6.1.2 The order of basic test items is: low temperature - high temperature - alternating damp heat - vibration - impact - transportation - drop. 5.6.2 Test method
5.6.2.1 The low temperature test shall be carried out in accordance with the provisions of GB2423.1. 5.6.2.2 The high temperature test shall be carried out in accordance with the provisions of GB2423.2. 5.6.2.3 The alternating damp heat test shall be carried out in accordance with the provisions of GB2423.4. Its severity level is: high temperature 40℃, test cycle number 12d. After the test, the electrical insulation performance of the equipment shall be evaluated, and the flameproof surface of the flameproof equipment shall not have rust. 5.6.2.4 The vibration test shall be carried out in accordance with the provisions of GB2423.10. 5.6.2.5 The impact test shall be carried out in accordance with the provisions of GB2423.5. 5.6.2.6 The transportation test shall be carried out in accordance with the provisions of GB6587.6. 5.6.2.7 The drop test shall be carried out in accordance with the provisions of GB2423.8. 6 Inspection rules
The inspections specified in this standard are divided into type inspection, acceptance inspection and routine inspection. 6.1 Type inspection
6.1.1 The number of samples for type inspection is 2.
6.1.2 The type inspection shall be carried out by the inspection unit specified by the superior competent department of the manufacturer according to the items specified in Table 1. 6.1.3 If one item is unqualified in the type inspection, the type inspection shall be judged to be unqualified. 6.2 Acceptance inspection
6.2.1 Generally, all acceptance inspection samples shall be inspected. In special cases, it may be determined according to the requirements of the recipient. 6.2.2 The acceptance inspection shall be carried out by the inspection department of the manufacturer (the recipient may send a representative to participate) in accordance with the provisions of Table 1. If one item is unqualified, the acceptance inspection shall be judged to be unqualified.
6.2.3 If the acceptance inspection is unqualified, the number of unqualified items of the product shall be doubled for re-inspection. If the item is still unqualified after repeated inspection, the manufacturer shall conduct 100% picky inspection on the product and submit it for acceptance again, but a report on the reasons for the failure of the batch of products shall be attached. 6.3 Routine inspection
6.3.1 Routine inspection is carried out by the inspection department of the manufacturer or the inspection unit specified by the superior competent department randomly selecting 2 units from the products that have passed the delivery inspection as the test products, and inspecting them according to the items specified in Table 1. 6.3.2 In batch production, routine inspection is carried out once for each batch (once a year when the annual output is less than 100 units). However, routine inspection is also required when there are major changes in design and process, and the explosion-proof performance inspection must be carried out again. 6.3.3 Before routine inspection, all test samples shall be retested according to the delivery inspection items. If unqualified products are found, they shall be replaced with qualified products. At the same time, the reasons shall be analyzed and included in the routine inspection report, but they shall not be used as the basis for judging the results of routine inspection. 8
GB/T15411—1994
6.3.4 When a fault or unqualified item occurs during routine inspection, immediately analyze and find out the cause, eliminate the fault and double the number of unqualified items. After passing the test, do the remaining items. If the item is still found to be unqualified during the double inspection, the inspection should be stopped and the routine inspection of the batch of products should be judged to be unqualified. At this time, find out the cause, take measures, and completely eliminate the unqualified factors until the routine inspection is passed. At the same time, take corresponding measures for all products in the batch.
Inspection category
Inspection items
(Article 5.1)
Electrical performance
(5.2)
Explosion-proof performance
(Article 5.3)
Safety
(Article 5.4)
Reliability
(Article 5.5)
Environmental adaptability
(Article 5.6)
(Article 7.1.1)
Type inspection
Note: 1) The electrical performance inspection items during the delivery inspection are specified in the product standard. 2) The safety inspection items during the delivery inspection are voltage test and insulation resistance test. 6.4 Explosion-proof performance inspection procedure
Explosion-proof performance inspection procedure is shown in Appendix A (supplement) 7 Marking, packaging, transportation, purchase and storage
7.1 Marking
7.1.1 Product marking
7.1.1.1 The markings for each explosion-proof type are:
Flameproof equipment: "d";
Increased safety equipment: "e"
Intrinsically safe equipment: "ia", \ib". Delivery inspection
Part 1
Part 2)||t t||Routine inspection
7.1.1.2 A clear and permanent embossed mark "Ex" shall be set on the obvious part of the equipment shell. For small equipment, the mark plate can be riveted or welded on the shell, or a concave mark can be used.
7.1.1.3 A nameplate shall be set on the obvious part of the equipment shell and fixed reliably. The nameplate shall include the following main contents: a.
There shall be a clear mark "Ex" on the upper right of the nameplate; explosion-proof mark, and the explosion-proof type, category, level, temperature group and other marks shall be marked in sequence; explosion-proof certificate number;
Product date and product number,| |tt||Contents that must be noted in the GB/T15411—1994
Product standard. e.
7.1.1.4 In addition to the contents specified in Article 7.1.1.3 of this standard, the nameplate of increased safety equipment shall also include the following contents: a.
Rated voltage and rated current;
Restricted environmental conditions, such as only allowed to be used in clean rooms; special protective devices.
In addition to the contents specified in Article 7.1.1.3 of this standard, the nameplate of associated equipment of intrinsically safe equipment shall also include the following contents:||t t||Maximum allowable voltage;
Maximum short-circuit current;
Maximum open-circuit voltage;
Allowable distributed capacitance (C), inductance (L) or ratio of inductance to resistance (L/R) of external connecting wires or cables. 6 In addition to the contents specified in Article 7.1.1.3 of this standard, the nameplate of intrinsically safe equipment shall also add the following contents: 7.1.1.6
Associated equipment model and specifications,
Battery model and specifications.
Nameplates and warning signs shall be made of bronze, brass or stainless steel, and their thickness shall not be less than 1mm. 7.1. 1.7
7.1.2 Packaging Marks
The following marks shall be on the packaging box:
Manufacturer's name and trademark,
Product name and model:
Product production date and quality,
Upward, Handle with care, Afraid of moisture, etc. The graphic marks shall comply with the provisions of GB191. 7.2 Packaging
Qualified equipment shall be packed together with the certificate, packing list, instruction manual and related accessories after being cleaned. 7.3 Transportation
Packaged products can be transported by all means of transportation, sea, land and air, in the correct position shown on the packaging box, but mechanical collision and direct exposure to rain and snow should be avoided.
7.4 Storage
The packaged products should be stored in a warehouse with an ambient temperature of -10 to +40℃ and a relative humidity of 50% to 80%. There should be no acidic, alkaline or other corrosive gases in the room, and no strong mechanical vibration. Under this condition, the storage period is one year (the product should be powered on at least once every six months).
GB/T15411—1994
Appendix A
Explosion-proof performance inspection procedure
(Supplement)
A1 Equipment trial-produced in accordance with this standard and other relevant national standards must be sent to the national designated inspection unit for explosion-proof performance inspection in accordance with the provisions of the corresponding standards. For products that have obtained the "explosion-proof certificate", other factories must still re-perform the inspection procedure when producing. A2 The explosion-proof performance inspection work includes drawing review and sample inspection. A3 The following materials must be submitted for drawing review:
a. Product standards (or technical conditions);
b. Product design drawings (complete signatures and binding); c. Necessary calculation data and explanations.
Two copies of the above materials, stamped after passing the review, one copy is kept in the inspection unit, and one copy is kept in the inspection unit. A4 The following samples and materials must be submitted for sample inspection. A4.1 Provide complete samples that meet the qualified drawings, and the number should meet the needs of the test. The inspection unit has the right to retain the samples if it deems it necessary.
Two copies of the product use and maintenance instructions, stamped after passing the review, one copy is kept in the inspection unit, and one copy is kept in the inspection unit. A4.3 Provide the parts and components required for inspection and necessary disassembly tools. A4.4 Relevant test reports:
Common test reports for all explosion-proof types, including electrical performance test reports, temperature rise (including maximum surface temperature) test reports, wet heat tests specified in a.
This standard and other relevant test reports, etc.: b. Relevant test reports and relevant explosion-proof parameter detection records specified in the explosion-proof type to which the sample belongs. Note: One copy of each of the above test reports and records. A5 After the sample passes the inspection, the inspection unit will issue an "explosion-proof certificate" with a validity period of five years, and its number must be indicated on the product nameplate. A6 For products that have obtained the "explosion-proof certificate", when partial changes are made and involve the relevant provisions of the corresponding standards, the changed drawings and relevant instructions must be sent to the original inspection unit for re-inspection in duplicate. If the changes do not involve the relevant provisions of the corresponding standards, the changed drawings and instructions should be sent to the inspection unit for filing.
A7 Equipment manufactured with new structures, new materials, and new technologies will be issued an "industrial test license" after passing the inspection. Products that have obtained the "industrial test license" must undergo industrial testing (conducted at the specified time, place, and number of units). After passing the appraisal, the original inspection unit will issue the "explosion-proof certificate" based on the appraisal information provided, the opinions of the presiding appraisal department, and the provisions of this standard and relevant standards before it can be put into production. A8 The inspection unit has the right to re-inspect the products that have been issued with the "explosion-proof certificate". If it is found that the product quality does not meet the original inspection and affects the explosion-proof performance, it should give opinions to the manufacturer and revoke the original "explosion-proof certificate" if necessary. Additional remarks:
This standard was proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard was drafted by Nantong Television Factory. The main drafters of this standard are Lu Libin, Liu Yunru and Shi Songtao. 11
Rated voltage and rated current;
Restricted environmental conditions, such as only allowed to be used in clean rooms, etc.; special protective devices.
In addition to the contents specified in Article 7.1.1.3 of this standard, the nameplate of the associated equipment of intrinsically safe equipment shall also add the following contents:
The maximum allowable voltage;
The maximum short-circuit current;
The maximum open-circuit voltage;
The allowable distributed capacitance (C), inductance (L) or the ratio of inductance to resistance (L/R) of the external connecting wire or cable. 6 In addition to the contents specified in Article 7.1.1.3 of this standard, the nameplate of intrinsically safe equipment shall also add the following contents: 7.1.1.6
Associated equipment model and specifications,
Battery model and specifications.
Nameplates and warning signs shall be made of bronze, brass or stainless steel, and their thickness shall not be less than 1mm. 7.1.1.7
7.1.2 Packaging Marks
The following marks shall be on the packaging box:
Manufacturer's name and trademark,
Product name and model:
Product date and quality,
Upward, Handle with care, Keep away from moisture, etc. The graphic marks shall comply with the provisions of GB191. 7.2 Packaging
Qualified equipment shall be packed together with the certificate, packing list, instruction manual and related accessories after being cleaned. 7.3 Transportation
Packaged products can be transported by all means of transportation, sea, land and air, in the correct position indicated on the packaging box, but mechanical collision and direct exposure to rain and snow shall be avoided.
7.4 Storage
The packaged products should be stored in a warehouse with an ambient temperature of -10 to +40℃ and a relative humidity of 50% to 80%. There should be no acidic, alkaline or other corrosive gases in the room, and no strong mechanical vibration. Under this condition, the storage period is one year (the product should be powered on at least once every six months).
GB/T15411—1994
Appendix A
Explosion-proof performance inspection procedure
(Supplement)
A1 Equipment trial-produced in accordance with this standard and other relevant national standards must be sent to the national designated inspection unit for explosion-proof performance inspection in accordance with the provisions of the corresponding standards. For products that have obtained the "explosion-proof certificate", other factories must still re-perform the inspection procedure when producing. A2 The explosion-proof performance inspection work includes drawing review and sample inspection. A3 The following materials must be submitted for drawing review:
a. Product standards (or technical conditions);
b. Product design drawings (complete signatures and binding); c. Necessary calculation data and explanations.
Two copies of the above materials, stamped after passing the review, one copy is kept in the inspection unit, and one copy is kept in the inspection unit. A4 The following samples and materials must be submitted for sample inspection. A4.1 Provide complete samples that meet the qualified drawings, and the number should meet the needs of the test. The inspection unit has the right to retain the samples if it deems it necessary.
Two copies of the product use and maintenance instructions, stamped after passing the review, one copy is kept in the inspection unit, and one copy is kept in the inspection unit. A4.3 Provide the parts and components required for inspection and necessary disassembly tools. A4.4 Relevant test reports:
Common test reports for all explosion-proof types, including electrical performance test reports, temperature rise (including maximum surface temperature) test reports, wet heat tests specified in a.
This standard and other relevant test reports, etc.: b. Relevant test reports and relevant explosion-proof parameter detection records specified in the explosion-proof type to which the sample belongs. Note: One copy of each of the above test reports and records. A5 After the sample passes the inspection, the inspection unit will issue an "explosion-proof certificate" with a validity period of five years, and its number must be indicated on the product nameplate. A6 For products that have obtained the "explosion-proof certificate", when partial changes are made and involve the relevant provisions of the corresponding standards, the changed drawings and relevant instructions must be sent to the original inspection unit for re-inspection in duplicate. If the changes do not involve the relevant provisions of the corresponding standards, the changed drawings and instructions should be sent to the inspection unit for filing.
A7 Equipment manufactured with new structures, new materials, and new technologies will be issued an "industrial test license" after passing the inspection. Products that have obtained the "industrial test license" must undergo industrial testing (conducted at the specified time, place, and number of units). After passing the appraisal, the original inspection unit will issue the "explosion-proof certificate" based on the appraisal information provided, the opinions of the presiding appraisal department, and the provisions of this standard and relevant standards before it can be put into production. A8 The inspection unit has the right to re-inspect the products that have been issued with the "explosion-proof certificate". If it is found that the product quality does not meet the original inspection and affects the explosion-proof performance, it should give opinions to the manufacturer and revoke the original "explosion-proof certificate" if necessary. Additional remarks:
This standard was proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard was drafted by Nantong Television Factory. The main drafters of this standard are Lu Libin, Liu Yunru and Shi Songtao. 11
Rated voltage and rated current;
Restricted environmental conditions, such as only allowed to be used in clean rooms, etc.; special protective devices.
In addition to the contents specified in Article 7.1.1.3 of this standard, the nameplate of the associated equipment of intrinsically safe equipment shall also add the following contents:
The maximum allowable voltage;
The maximum short-circuit current;
The maximum open-circuit voltage;
The allowable distributed capacitance (C), inductance (L) or the ratio of inductance to resistance (L/R) of the external connecting wire or cable. 6 In addition to the contents specified in Article 7.1.1.3 of this standard, the nameplate of intrinsically safe equipment shall also add the following contents: 7.1.1.6
Associated equipment model and specifications,
Battery model and specifications.
Nameplates and warning signs shall be made of bronze, brass or stainless steel, and their thickness shall not be less than 1mm. 7.1.1.7
7.1.2 Packaging Marks
The following marks shall be on the packaging box:
Manufacturer's name and trademark,
Product name and model:
Product date and quality,
Upward, Handle with care, Keep away from moisture, etc. The graphic marks shall comply with the provisions of GB191. 7.2 Packaging
Qualified equipment shall be packed together with the certificate, packing list, instruction manual and related accessories after being cleaned. 7.3 Transportation
Packaged products can be transported by all means of transportation, sea, land and air, in the correct position indicated on the packaging box, but mechanical collision and direct exposure to rain and snow shall be avoided.
7.4 Storage
The packaged products should be stored in a warehouse with an ambient temperature of -10 to +40℃ and a relative humidity of 50% to 80%. There should be no acidic, alkaline or other corrosive gases in the room, and no strong mechanical vibration. Under this condition, the storage period is one year (the product should be powered on at least once every six months).
GB/T15411—1994
Appendix A
Explosion-proof performance inspection procedure
(Supplement)
A1 Equipment trial-produced in accordance with this standard and other relevant national standards must be sent to the national designated inspection unit for explosion-proof performance inspection in accordance with the provisions of the corresponding standards. For products that have obtained the "explosion-proof certificate", other factories must still re-perform the inspection procedure when producing. A2 The explosion-proof performance inspection work includes drawing review and sample inspection. A3 The following materials must be submitted for drawing review:
a. Product standards (or technical conditions);
b. Product design drawings (complete signatures and binding); c. Necessary calculation data and explanations.
Two copies of the above materials, stamped after passing the review, one copy is kept in the inspection unit, and one copy is kept in the inspection unit. A4 The following samples and materials must be submitted for sample inspection. A4.1 Provide complete samples that meet the qualified drawings, and the number should meet the needs of the test. The inspection unit has the right to retain the samples if it deems it necessary.
Two copies of the product use and maintenance instructions, stamped after passing the review, one copy is kept in the inspection unit, and one copy is kept in the inspection unit. A4.3 Provide the parts and components required for inspection and necessary disassembly tools. A4.4 Relevant test reports:
Common test reports for all explosion-proof types, including electrical performance test reports, temperature rise (including maximum surface temperature) test reports, wet heat tests specified in a.
This standard and other relevant test reports, etc.: b. Relevant test reports and relevant explosion-proof parameter detection records specified in the explosion-proof type to which the sample belongs. Note: One copy of each of the above test reports and records. A5 After the sample passes the inspection, the inspection unit will issue an "explosion-proof certificate" with a validity period of five years, and its number must be indicated on the product nameplate. A6 For products that have obtained the "explosion-proof certificate", when partial changes are made and involve the relevant provisions of the corresponding standards, the changed drawings and relevant instructions must be sent to the original inspection unit for re-inspection in duplicate. If the changes do not involve the relevant provisions of the corresponding standards, the changed drawings and instructions should be sent to the inspection unit for filing.
A7 Equipment manufactured with new structures, new materials, and new technologies will be issued an "industrial test license" after passing the inspection. Products that have obtained the "industrial test license" must undergo industrial testing (conducted at the specified time, place, and number of units). After passing the appraisal, the original inspection unit will issue the "explosion-proof certificate" based on the appraisal information provided, the opinions of the presiding appraisal department, and the provisions of this standard and relevant standards before it can be put into production. A8 The inspection unit has the right to re-inspect the products that have been issued with the "explosion-proof certificate". If it is found that the product quality does not meet the original inspection and affects the explosion-proof performance, it should give opinions to the manufacturer and revoke the original "explosion-proof certificate" if necessary. Additional remarks:
This standard was proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard was drafted by Nantong Television Factory. The main drafters of this standard are Lu Libin, Liu Yunru and Shi Songtao. 11Relevant test reports and explosion-proof parameter test records as specified by the explosion-proof type of the sample. Note: One copy of each of the above test reports and records. A5 After the sample passes the inspection, the inspection unit will issue an "explosion-proof certificate" with a validity period of five years, and its number must be indicated on the product nameplate. A6 For products that have obtained the "explosion-proof certificate", when partial changes are made and the relevant provisions of the corresponding standards are involved, two copies of the changed drawings and relevant instructions must be sent to the original inspection unit for re-inspection. If the changes do not involve the relevant provisions of the corresponding standards, the changed drawings and instructions should be submitted to the inspection unit for filing.
A7 Equipment manufactured with new structures, new materials, and new technologies will be issued an "industrial test license" after passing the inspection. Products that have obtained the "industrial test license" must undergo industrial testing (performed at the specified time, place, and number of units). After passing the appraisal, the original inspection unit will issue the "explosion-proof certificate" based on the appraisal information provided, the opinions of the presiding appraisal department, and the provisions of this standard and relevant standards before it can be put into production. A8 The inspection unit has the right to re-inspect the products that have been issued with the "explosion-proof certificate". If it is found that the product quality does not meet the original inspection and affects the explosion-proof performance, it should give opinions to the manufacturer and revoke the original "explosion-proof certificate" if necessary. Additional remarks:
This standard was proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard was drafted by Nantong Television Factory. The main drafters of this standard are Lu Libin, Liu Yunru and Shi Songtao. 11Relevant test reports and explosion-proof parameter test records as specified by the explosion-proof type of the sample. Note: One copy of each of the above test reports and records. A5 After the sample passes the inspection, the inspection unit will issue an "explosion-proof certificate" with a validity period of five years, and its number must be indicated on the product nameplate. A6 For products that have obtained the "explosion-proof certificate", when partial changes are made and the relevant provisions of the corresponding standards are involved, two copies of the changed drawings and relevant instructions must be sent to the original inspection unit for re-inspection. If the changes do not involve the relevant provisions of the corresponding standards, the changed drawings and instructions should be submitted to the inspection unit for filing.
A7 Equipment manufactured with new structures, new materials, and new technologies will be issued an "industrial test license" after passing the inspection. Products that have obtained the "industrial test license" must undergo industrial testing (performed at the specified time, place, and number of units). After passing the appraisal, the original inspection unit will issue the "explosion-proof certificate" based on the appraisal information provided, the opinions of the presiding appraisal department, and the provisions of this standard and relevant standards before it can be put into production. A8 The inspection unit has the right to re-inspect the products that have been issued with the "explosion-proof certificate". If it is found that the product quality does not meet the original inspection and affects the explosion-proof performance, it should give opinions to the manufacturer and revoke the original "explosion-proof certificate" if necessary. Additional remarks:
This standard was proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard was drafted by Nantong Television Factory. The main drafters of this standard are Lu Libin, Liu Yunru and Shi Songtao. 11
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