Some standard content:
National Standard of the People's Republic of China
Degrees of protection provided by enclosure (IP code)
Degrees of protection provided by enclosure (IP code)
This standard is equivalent to IEC529 (1989) "Enclosure Protection Level (IP code)" IP code)》. 1 Scope of application
GB4208-93
Replaces GB420884
This standard is applicable to the protection classification of electrical equipment with a rated voltage not exceeding 72.5kV and protected by an enclosure. 2 Purpose
The purpose of this standard is as follows:
a Specifies the enclosure protection level of electrical equipment for the following contents: 1) Preventing the human body from approaching dangerous parts inside the enclosure; 2) Preventing solid foreign matter from entering the equipment inside the enclosure: ;3) Prevent harmful effects on the equipment due to water entering the shell: indication of protection levels;
b.
c.
Requirements for each protection level;
d. Conduct verification tests on the enclosure in accordance with the requirements of this standard. The degree and method of quoting the protection level of the shell for various products, as well as what kind of shell is used, are left to be determined by the product standards. The tests used for the specific protection levels should comply with the provisions of this standard. If necessary, supplements can be added to the relevant product labels. Require. See Appendix B for details that may be specified in relevant product standards. For special types of equipment, product standards can specify different requirements, but at least the same level of safety must be ensured. This standard only considers enclosures that comply with relevant product standards in all aspects. Under normal use conditions, the materials and processes of the enclosure should ensure that the required protection level is achieved.
If a certain type of equipment meets the general requirements for testing and the selected protection level is suitable for that type of equipment, this standard also applies to the empty enclosure of that type of equipment.
Related to mechanical damage, rust, corrosive solvents, mold, insect damage, solar radiation, ice, moisture (such as caused by condensation), explosive gas and other external influences or environmental conditions that damage the shell and the equipment inside the shell Protective measures and prevention of contact with dangerous moving parts outside the enclosure (such as fans) are specified by the relevant product standards.
Partitions that are not connected to the enclosure and barriers specifically designed for personal safety are not considered part of the enclosure. 3 Terms
3.1 Enclosure
Equipment components that protect the equipment from certain external influences and prevent direct contact in all directions. Note: Parts that prevent or restrict the entry of test tools specified in this standard, and that form holes or other openings, whether attached to the enclosure or covering the equipment, are considered part of the enclosure and do not require the use of keys or tools. Except for parts that can be removed. The State Bureau of Technical Supervision approved the implementation on 1994-08-01 on 1993-12-28
3.2 Direct contact directcontact
Contact between humans or livestock and live parts.
3.3 degree of protection GB4208-93
According to the inspection method specified in the standard, the degree of protection provided by the shell to access dangerous parts and prevent the entry of solid foreign objects or the entry of water. 3.4 IP code IPcode
A code system that indicates the enclosure's level of protection against hazardous parts for human access, protection against the ingress of solid foreign objects or water, and additional information related to these protections.
3.5 Hazardous parts hazardous parts
Parts that are dangerous when approached or contacted.
3.5.1 Hazardous live parts hazardous live parts are live parts that can cause electric shock under certain external influence conditions. 3.5.2 Hazardous mechanical parts are moving parts that are dangerous when in contact with hazardous mechanical parts. Except for smooth rotating shafts. 3.6: The protection provided by the enclosure against access to hazardous parts protectionprovidedbyanenclosureagainstaccesstohazardousparts
The enclosure protects the human body from contact with dangerous low-voltage live parts, contact with dangerous mechanical parts, and access to dangerous high-voltage live parts with less than a sufficient gap inside the enclosure.
Note: This protection can be achieved by means of the enclosure itself, by means of partitions that are part of the enclosure or by means of distances within the enclosure. 3.7 Sufficient clearance to prevent access to hazardous parts adequateclearanceforprotectionagainstaccesstohazardousparts
The distance that can prevent the test tool from contacting or approaching the hazardous parts. See 11.3 for details. 3.8 Access probe accessprobe | || tt | holes or gaps formed. 4 mark
4.1 Composition and meaning of IP code
IP code consists of code letters IP (International Protection), the first characteristic number, the second characteristic number, additional letters, and supplementary letters.
When the characteristic number is not required to be specified, the letter "X" is used instead (if both letters are omitted, "XX" is used). Additional letters and/or supplementary letters may be omitted and do not need to be replaced. When more than one supplementary letter is used, they should be arranged in alphabetical order. When the enclosure uses different installation methods to provide different protection levels, the manufacturer should indicate the protection levels in the instructions for the corresponding installation methods.
Please see Chapter 9 for details on how to mark the shell.
The composition of the IP code is shown in Table 1. For detailed instructions, see the regulations indicated in Table 1. Group
into
code letter
first digit
characteristic number
second digit
characteristic number
appended Letters
(optional)
Supplementary letters
(optional)
4.2 IP code examples
Numbers or letters
IP| |tt||0
1
2
3
4
5
6
0||tt ||1
2
3
4
5
6
7
8
A
B
c
D
H
M
s
W
GB4208- 93
Table 1 Composition and meaning of IP code
Meaning of equipment protection
Prevent solid foreign matter from entering
No protection
≥50mm||tt| |≥g12.5mm
≥2.5mm
≥1.0mm
Dust-proof
Dust-tight
Prevent harmful effects caused by water ingress||tt| |No protection
Vertical dripping
15° dripping
Spraying
Splashing
Spraying
Violent spraying||tt ||Short-term immersion
Continuous immersion
Special supplementary information
High-pressure equipment
Operation of the specimen during waterproof test
Test during waterproof test Like static
Climate conditions
4.2.1 Meaning of IP codes without additional letters and supplementary letters for personal protection
Prevention of access to hazardous parts
No protection||tt ||Back of hand
Fingers
Tools
Metal wire
Metal wire
Metal wire
Prevent access to hazardous parts
Back of hand
Fingers
Tools
Metal wire
Refer to the regulations
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Among them:
IP
3
4
GB4208--93
Two-digit characteristic number
First characteristic number
Code letter
3 - Prevent people from approaching dangerous parts with tools with a diameter of not less than 2.5mm; prevent people with a diameter of not less than 2.5mm solid foreign matter enters the device casing.
4 One by one, prevent harmful effects on the equipment caused by water splashing in all directions of the casing. IPX5-
IP2X-
does not require the first characteristic digit.
One does not require the second characteristic digit.
IPX5/IPX7-one provides two different protection levels for different functions: anti-spray and anti-short-term water immersion. 4.2.2 IP code using optional letters
IP2
The shell carries the above IP code, meaning:
C
Supplementary letters
appended Letters
The second characteristic number
The first characteristic number
Code letters
2 prevent people from approaching dangerous parts with their fingers; prevent the diameter from being less than 12.5mm Solid foreign matter enters the housing. 3—Prevent water splashing from causing harmful effects on the equipment inside the housing. C
S
Prevent people from approaching dangerous parts with tools with a diameter of not less than 2.5mm and a length of not more than 100mm. - Tests to prevent harmful effects of water ingress are carried out with all equipment parts stationary. IP20C-
IPXXC
IPX1C
IP3XD
uses additional letters.
does not require two character digits, use additional letters. The first characteristic digit is not required, additional letters are used. The second characterizing digit is not required, an additional letter is used. IP23S-
Use supplementary letters.
IP21CM—Using additional letters and supplementary letters, the first characteristic digit of 5
indicates that both conditions of 5.1 and 5.2 are met. When the enclosure also complies with all levels below a certain level of protection, only this level shall be designated by this number. If the test is clearly applicable to any lower level of protection, the test for lower levels need not be carried out. 5.1 Protection against access to hazardous parts
The level of protection against access to hazardous parts represented by the first characteristic number is shown in Table 2. In the table, only the first characteristic number specifies the protection level, and the brief description and meaning do not serve as regulations for the protection level. According to the provisions of the first characteristic number, sufficient clearance should be maintained between the test tool and the dangerous parts. See Chapter 11 for testing.
First place
Characteristic number
0
2
6
GB4208—93
Table 2 First The level of protection against access to hazardous parts represented by the characteristic number Protection level
Brief description
No protection
Prevent the back of the hand from approaching hazardous parts
Prevent fingers from approaching hazardous parts| |tt||Prevent tools from approaching dangerous parts
Prevent metal wires from approaching dangerous parts
pieces
Prevent metal wires from approaching dangerous parts
pieces
Prevent metal The line is close to the dangerous part
piece
including
meaning
The spherical test tool with a diameter of 50mm should have sufficient clearance from the dangerous
hazardous part||tt| |Hinged joint with a diameter of 12mm and a length of 80mm
There should be sufficient clearance between the test finger and the dangerous parts
clearance
The test tool with a diameter of 2.5mm shall not enter
the shell| |tt||Test tools with a diameter of 1.0mm are not allowed to enter
Inside the shell
Test tools with a diameter of 1.0mm are not allowed to enter
Inside the shell
Test tools with a diameter of 1.0mm Tools are not allowed to enter
Inside the shell
Test conditions
See regulations
11.2
11.2
11:2||tt ||11.2
11.2
11.2
Note: For the cases where the first characteristic number is 3, 4, 5 and 6, if the test tool maintains sufficient distance from the dangerous parts in the shell gap, the test is deemed to be qualified. 5.2 Protection against the entry of solid foreign objects
The protection level against the entry of solid foreign objects (including dust) represented by the first characteristic number is shown in Table 3. Table 3 only specifies the protection level by the first characteristic number. The brief description and meaning are not used as regulations for the protection level to prevent the entry of solid foreign objects. When the first characteristic number in Table 3 is 1 or 2, it means that the object test tool shall not completely enter. The entire diameter of the shell, meaning the ball, must not pass through the shell opening. When the first characteristic number is 3 or 4, the object test tool must not enter the housing at all. Number 5 dustproof enclosures that allow the entry of limited amounts of dust under certain specified conditions. The dust-tight enclosure numbered 6 does not allow any dust to enter. Note: The enclosure with the first characteristic number 1 to 4 should be able to prevent solid foreign objects with regular or irregular shapes, whose three mutually perpendicular dimensions exceed the corresponding number in the third column of Table 3, from entering the enclosure.
See Chapter 12 for the test.
First place
Characteristic number
0
1
2
3
4
GB4208--93
The protection level to prevent the entry of solid foreign matter represented by the first characteristic number in Table 3 Protection level
Brief description
No protection
Solid foreign objects less than 50
mm
Prevent solid foreign objects with a diameter not less than 12.5
mm
Prevent solid foreign objects with a diameter not less than 2.5
mm| |tt||Prevent solid foreign matter with a diameter not less than 1.0
mm
Dust-proof
Dense
Note: 1) The diameter part of the object test tool shall not enter the shell Open your mouth. 6 The second characteristic number
includes
meaning
The spherical object test tool with a diameter of 50mm cannot
completely enter the shell 1
with a diameter of 12.5mm The test tool for spherical objects
shall not completely enter the shell 1》
The test tool for objects with a diameter of 2.5mm shall not completely enter the shell 1
The test tool for objects with a diameter of 1.0mm The equipment must not enter the shell completely
It cannot completely prevent dust from entering, but the amount of dust that enters
must not affect the normal operation of the equipment and must not affect safety
No dust intrusion
The second characteristic number indicates the protection level of the enclosure against harmful effects on the equipment due to water ingress.
See regulations
12.2.
12.2
12.2
12.2
12.4,12.5
12.4,12.6
Table 4 gives the second characteristic number Brief description and meaning of the protection level represented. The brief description and meaning are not used as regulations for the protection level.
The second characteristic number is 6 or lower. For each level, the marked level also indicates compliance with the requirements of levels below that level. Therefore, if the test is clearly applicable to any level below that level, the test below that level does not need to be performed. Table 4. The second digit of the protection level represented by the second characteristic number
Characteristic number
0
1
Brief description
No protection||tt| |Prevent vertical dripping
Protection level
Inclusive
meaning
Vertical dripping should have no harmful effects
Test conditions
See chapter Article
13.2.1
Second digit
Characteristic number
3
4
5
6
7||tt| | 8 |
Vertical dripping when tilted inwards
Proof against splashing water
Proof against splashing water||Proof against water spray
Proof against strong water spray
Proof against water spray Effects of short-term immersion in water
Anti-effects of continuous diving
meaning
When each vertical surface of the housing is tilted within 15°
, vertical dripping water should not be harmful|| tt||Impact
Spraying water on each vertical surface within 60° will have no harmful effects
Splashing water in all directions of the shell will have no harmful effects
Spraying water in all directions of the shell will have no harmful effects Impact
Strong spraying of water in all directions of the casing has no harmful effects
Hazardous impact
Immersed in water with specified pressure for specified time
The amount of water entering the casing will not reach harmful levels| | tt | |tt||Degree
Test conditions
See regulations
13.2.2
13.2.3
13.2.4
13.2 .5
13.2.6
13.2.7
13.2.8
Only the shells marked with the second characteristic number 7 or 8 are not suitable for water spraying (marked The second characteristic number is 5 or 6), does not need to meet the requirement of number 5 or 6, unless there is a double mark in Table 5. Table 5 Double Marking of the Second Characteristic Number
Tests passed by the enclosure
Marks and Marks
Spray
Water
Second Characteristic Number| |tt||5
6
5
6
Short/continuous diving
Second characteristic number
7| |tt||7
8
8
7
8
or continued diving requirements. 2) It means that the shell is only suitable for short-term or continuous diving, but not suitable for water spraying. IPX5/IPX7
IPX6/IPX7
IPX5/IPX8
IPX6/IPX8
IPX7
IPX8
Application scope||tt| |Universal 1
Universal
Universal
Universal\
Limited
Limited
7 additional letters
GB4208-- 93
Additional letters indicate the level of protection against human access to hazardous parts. Additional letters are used in the following two situations: a.
The actual protection close to hazardous parts is higher than the protection level represented by the first characteristic number; b.
The first characteristic number is represented by "X ” Instead, it is only necessary to indicate the degree of protection against access to hazardous parts. Such higher levels of protection are achieved, for example, by baffles, appropriate shapes of openings, or distances from components within the housing. Table 6 lists hand-held test tools that can conveniently represent parts of the human body or objects and the meaning of the level of protection against access to hazardous parts. These contents are represented by additional letters. Table 6. Protection levels against access to hazardous parts represented by additional letters. Protection level
Additional letters
Brief description
A
B
C|| tt || D | | tt | |tt|| There must be sufficient clearance between the spherical test tool with a diameter of 50mm and the dangerous parts
There must be sufficient clearance between the articulated test finger with a diameter of 12mm and a length of 80mm and the dangerous parts
A diameter of 2.5mm and a length of A sufficient gap must be maintained between the 100mm test tool and the dangerous parts
The test tool with a diameter of 1.0mm and a length of 100mm must maintain a sufficient gap between the dangerous parts
Test conditions
See regulations| |tt||14.2
14.2
14.2
14.2
This additional letter is only required to designate the enclosure if it is suitable for use in grades below a certain grade. Tests below that level need not be performed if the test is clearly applicable to all levels below that level. See Chapter 14 for testing.
See Appendix A for examples of IP codes.
8 supplementary letters
In relevant product standards, supplementary letters may be used to indicate supplementary content. Supplementary letters are placed after the second characteristic number or additional letters. The supplementary content should be consistent with the requirements of this standard, and the product standard should clearly state the supplementary requirements for this level of testing. The letters and meanings of supplementary content are shown in Table 7. Word
H
Mother
M
s
W
High voltage equipment
GB4208—93||tt| |Table 7 supplementary letters and their meanings
Contains
meaning
Waterproof test is carried out when the movable parts of the equipment (such as the rotor of the rotating motor) are running. Components (such as the rotor of a rotating electrical machine) that are suitable for the specified climatic conditions and have additional protective features or processes when stationary. Supplementary letters other than those listed in Table 7 may be used in product standards. In order to avoid repeated use of supplementary letters, the requirements for citing new letters in product standards are shown in Appendix B8.
If there are no letters S and M, it means that the protection level has nothing to do with whether the equipment components are running or not, and the test needs to be done both when the equipment is running and when it is stationary. However, if the test is obviously passable under another condition, it is generally sufficient to do the test under one condition. 9Mark
Product standards should stipulate the requirements for marking. For the following situations, product standards should also make appropriate provisions for marking methods: a. When one part of the shell has a different protection level from another part; when the installation position affects the protection level; b.
c.| |tt||The maximum diving depth and time must be stated. 10 General requirements for testing
10.1 Environmental conditions for waterproof and dustproof testing
Unless otherwise specified in the relevant product standards, the test should be conducted under the specified standard environmental conditions. , during the test, the recommended environmental conditions are as follows: Temperature range: 15~35℃
Relative humidity: 25%~75%
Atmospheric pressure: 86~106kPa
(860~1060mbar )
10.2 Sample
The test specified in this standard is a type test. Unless otherwise specified in the product standard, the samples used for each test should be clean and new. All components should be installed in place as specified by the manufacturer.
If the test cannot be carried out on the entire equipment, it should be carried out on representative parts or on smaller equipment designed with the same proportions. Relevant product standards should stipulate the number of specimens, specimen installation, combination, positioning conditions (such as ceiling, floor or wall installation), pretreatment methods (if any), and whether they are powered or running during the test. If the product standard does not specify details, they should be specified by the manufacturer's instructions. 10.3 Application of test requirements and judgment of test results When the application of general test requirements and equipment have drain holes and ventilation holes, the acceptance conditions for the test are stipulated by the relevant product standards. If there are no such provisions, the provisions of this standard shall be followed.
The judgment of test results is stipulated by relevant product standards. If not specified, the acceptance conditions of this standard shall be regarded as minimum requirements. 10.4 Test conditions for the first characteristic digit
The test conditions for the first characteristic digit are shown in Table 8.8 | double logo. Table 5 Double Marking of the Second Characteristic Number
Tests passed by the enclosure
Marks and Marks
Spray
Water
Second Characteristic Number| |tt||5
6
5
6
Short/continuous diving
Second characteristic number
7| |tt||7
8
8
7
8
or continued diving requirements. 2) It means that the shell is only suitable for short-term or continuous diving, but not suitable for water spraying. IPX5/IPX7
IPX6/IPX7
IPX5/IPX8
IPX6/IPX8
IPX7
IPX8
Application scope||tt| |Universal 1
Universal
Universal
Universal\
Limited
Limited
7 additional letters
GB4208-- 93
Additional letters indicate the level of protection against human access to hazardous parts. Additional letters are used in the following two situations: a.
The actual protection close to hazardous parts is higher than the protection level represented by the first characteristic number; b.
The first characteristic number is "X ” Instead, it is only necessary to indicate the degree of protection against access to hazardous parts. Such higher levels of protection are achieved, for example, by baffles, appropriate shapes of openings, or distances from components within the housing. Table 6 lists hand-held test tools that can conveniently represent parts of the human body or objects and the meaning of the level of protection against access to hazardous parts. These contents are represented by additional letters. Table 6. Protection levels against access to hazardous parts represented by additional letters. Protection level
Additional letters
Brief description
A
B
C|| tt || D | | tt | |tt|| There must be sufficient clearance between the spherical test tool with a diameter of 50mm and the dangerous parts
There must be sufficient clearance between the articulated test finger with a diameter of 12mm and a length of 80mm and the dangerous parts
A diameter of 2.5mm and a length of A sufficient gap must be maintained between the 100mm test tool and the dangerous parts
The test tool with a diameter of 1.0mm and a length of 100mm must maintain a sufficient gap between the dangerous parts
Test conditions
See regulations| |tt||14.2
14.2
14.2
14.2
This additional letter is only required to designate the enclosure if it is suitable for use in grades below a certain grade. Tests below that level need not be performed if the test is clearly applicable to all levels below that level. See Chapter 14 for testing.
See Appendix A for examples of IP codes.
8 supplementary letters
In relevant product standards, supplementary letters may be used to indicate supplementary content. Supplementary letters are placed after the second characteristic number or additional letters. The supplementary content should be consistent with the requirements of this standard, and the product standard should clearly state the supplementary requirements for this level of testing. See Table 7 for the letters and meanings of supplementary content. Word
H
Mother
M
s
W
High voltage equipment
GB4208—93||tt| |Table 7 supplementary letters and their meanings
Contains
meaning
Waterproof test is carried out when the movable parts of the equipment (such as the rotor of the rotating motor) are running. Components (such as the rotor of a rotating electrical machine) that are suitable for the specified climatic conditions and have additional protective features or processes when stationary. Additional letters other than those listed in Table 7 may be used in product standards. In order to avoid repeated use of supplementary letters, the requirements for citing new letters in product standards are shown in Appendix B8.
If there are no letters S and M, it means that the protection level has nothing to do with whether the equipment components are running or not, and the test needs to be done both when the equipment is running and when it is stationary. However, if the test is obviously passable under another condition, it is generally sufficient to do the test under one condition. 9Mark
Product standards should stipulate the requirements for marking. For the following situations, product standards should also make appropriate provisions for marking methods: a. When one part of the shell has a different protection level from another part; when the installation position affects the protection level; b.
c.| |tt||The maximum diving depth and time must be stated. 10 General requirements for testing
10.1 Environmental conditions for waterproof and dustproof testing
Unless otherwise specified in the relevant product standards, the test should be conducted under the specified standard environmental conditions. , during the test, the recommended environmental conditions are as follows: Temperature range: 15~35℃
Relative humidity: 25%~75%
Atmospheric pressure: 86~106kPa
(860~1060mbar )
10.2 Sample
The test specified in this standard is a type test. Unless otherwise specified in the product standard, the samples used for each test should be clean and new. All components should be installed in place as specified by the manufacturer.
If the test cannot be carried out on the entire equipment, it should be carried out on representative parts or on smaller equipment designed with the same proportions. Relevant product standards should stipulate the number of specimens, specimen installation, combination, positioning conditions (such as ceiling, floor or wall installation), pretreatment methods (if any), and whether they are powered or running during the test. If the product standard does not specify details, they should be specified by the manufacturer's instructions. 10.3 Application of test requirements and judgment of test results. The application of general test requirements and the acceptance conditions of the test when the equipment has drain holes and ventilation holes are stipulated by the relevant product standards. If there are no such provisions, the provisions of this standard shall be followed.
The judgment of test results is stipulated by relevant product standards. If not specified, the acceptance conditions of this standard shall be regarded as minimum requirements. 10.4 Test conditions for the first characteristic digit
The test conditions for the first characteristic digit are shown in Table 8.8 | double logo. Table 5 Double Marking of the Second Characteristic Number
Tests passed by the enclosure
Marks and Marks
Spray
Water
Second Characteristic Number| |tt||5
6
5
6
Short/continuous diving
Second characteristic number
7| |tt||7
8
8
7
8
or continued diving requirements. 2) It means that the shell is only suitable for short-term or continuous diving, but not suitable for water spraying. IPX5/IPX7
IPX6/IPX7
IPX5/IPX8
IPX6/IPX8
IPX7
IPX8
Application scope||tt| |Universal 1
Universal
Universal
Universal\
Limited
Limited
7 additional letters
GB4208-- 93
Additional letters indicate the level of protection against human access to hazardous parts. Additional letters are used in the following two situations: a.
The actual protection close to hazardous parts is higher than the protection level represented by the first characteristic number; b.
The first characteristic number is represented by "X ” Instead, it is only necessary to indicate the degree of protection against access to hazardous parts. Such higher levels of protection are achieved, for example, by baffles, appropriate shapes of openings, or distances from components within the housing. Table 6 lists hand-held test tools that can conveniently represent parts of the human body or objects and the meaning of the level of protection against access to hazardous parts. These contents are represented by additional letters. Table 6. Protection levels against access to hazardous parts represented by additional letters. Protection level
Additional letters
Brief description
A
B
C|| tt || D | | tt | |tt|| There must be sufficient clearance between the spherical test tool with a diameter of 50mm and the dangerous parts
There must be sufficient clearance between the articulated test finger with a diameter of 12mm and a length of 80mm and the dangerous parts
A diameter of 2.5mm and a length of A sufficient gap must be maintained between the 100mm test tool and the dangerous parts
The test tool with a diameter of 1.0mm and a length of 100mm must maintain a sufficient gap between the dangerous parts
Test conditions
See regulations| |tt||14.2
14.2
14.2
14.2
This additional letter is only required to designate the enclosure if it is suitable for use in grades below a certain grade. Tests below this level need not be performed if the test is clearly applicable to all levels below that level. See Chapter 14 for testing.
See Appendix A for examples of IP codes.
8 supplementary letters
In relevant product standards, supplementary letters may be used to indicate supplementary content. Supplementary letters are placed after the second characteristic number or additional letters. The supplementary content should be consistent with the requirements of this standard, and the product standard should clearly state the supplementary requirements for this level of testing. The letters and meanings of supplementary content are shown in Table 7. Word
H
Mother
M
s
W
High voltage equipment
GB4208—93||tt| |Table 7 supplementary letters and their meanings
Contains
meaning
Waterproof test is carried out when the movable parts of the equipment (such as the rotor of the rotating motor) are running. Components (such as the rotor of a rotating electrical machine) that are suitable for the specified climatic conditions and have additional protective features or processes when stationary. Supplementary letters other than those listed in Table 7 may be used in product standards. In order to avoid repeated use of supplementary letters, the requirements for citing new letters in product standards are shown in Appendix B8.
If there are no letters S and M, it means that the protection level has nothing to do with whether the equipment components are running or not, and the test needs to be done both when the equipment is running and when it is stationary. However, if the test is obviously passable under another condition, it is generally sufficient to do the test under one condition. 9Mark
Product standards should stipulate the requirements for marking. For the following situations, product standards should also make appropriate provisions for marking methods: a. When one part of the shell has a different protection level from another part; when the installation position affects the protection level; b.
c.| |tt||The maximum diving depth and time must be stated. 10 General requirements for testing
10.1 Environmental conditions for waterproof and dustproof testing
Unless otherwise specified in the relevant product standards, the test should be conducted under the specified standard environmental conditions. , during the test, the recommended environmental conditions are as follows: Temperature range: 15~35℃
Relative humidity: 25%~75%
Atmospheric pressure: 86~106kPa
(860~1060mbar )
10.2 Sample
The test specified in this standard is a type test. Unless otherwise specified in the product standard, the samples used for each test should be clean and new. All components should be installed in place as specified by the manufacturer. bzxz.net
If the test cannot be carried out on the entire equipment, it should be carried out on representative parts or on smaller equipment designed with the same proportions. Relevant product standards should stipulate the number of specimens, specimen installation, combination, positioning conditions (such as ceiling, floor or wall installation), pretreatment methods (if any), and whether they are powered or running during the test. If the product standard does not specify details, they should be specified by the manufacturer's instructions. 10.3 Application of test requirements and judgment of test results. The application of general test requirements and the acceptance conditions of the test when the equipment has drain holes and ventilation holes are stipulated by the relevant product standards. If there are no such provisions, the provisions of this standard shall be followed.
The judgment of test results is stipulated by relevant product standards. If not specified, the acceptance conditions of this standard shall be regarded as minimum requirements. 10.4 Test conditions for the first characteristic digit
The test conditions for the first characteristic digit are shown in Table 8.0mm, a sufficient gap must be maintained between the test tool and the dangerous parts with a length of 100mm
Test conditions
See regulations
14.2
14.2
14.2|| tt||14.2
If the enclosure is suitable for use in classes below a certain class, this additional letter is only required to designate that class. Tests below this level need not be performed if the test is clearly applicable to all levels below that level. See Chapter 14 for testing.
See Appendix A for examples of IP codes.
8 supplementary letters
In relevant product standards, supplementary letters may be used to indicate supplementary content. Supplementary letters are placed after the second characteristic number or additional letters. The supplementary content should be consistent with the requirements of this standard, and the product standard should clearly state the supplementary requirements for this level of testing. The letters and meanings of supplementary content are shown in Table 7. Word
H
Mother
M
s
W
High voltage equipment
GB4208—93||tt| |Table 7 supplementary letters and their meanings
Contains
meaning
Waterproof test is carried out when the movable parts of the equipment (such as the rotor of the rotating motor) are running. Components (such as the rotor of a rotating electrical machine) that are suitable for the specified climatic conditions when stationary and have additional protective features or processes. Additional letters other than those listed in Table 7 may be used in product standards. In order to avoid repeated use of supplementary letters, the requirements for citing new letters in product standards are shown in Appendix B8.
If there are no letters S and M, it means that the protection level has nothing to do with whether the equipment components are running or not, and the test needs to be done both when the equipment is running and when it is stationary. However, if the test is obviously passable under another condition, it is generally sufficient to do the test under one condition. 9Mark
Product standards should stipulate the requirements for marking. For the following situations, product standards should also make appropriate provisions for marking methods: a. When one part of the shell has a different protection level from another part; when the installation position affects the protection level; b.
c.| |tt||The maximum diving depth and time must be stated. 10 General requirements for testing
10.1 Environmental conditions for waterproof and dustproof testing
Unless otherwise specified in the relevant product standards, the test should be conducted under the specified standard environmental conditions. , during the test, the recommended environmental conditions are as follows: Temperature range: 15~35℃
Relative humidity: 25%~75%
Atmospheric pressure: 86~106kPa
(860~1060mbar )
10.2 Sample
The test specified in this standard is a type test. Unless otherwise specified in the product standard, the samples used for each test should be clean and new. All components should be installed in place as specified by the manufacturer.
If the test cannot be carried out on the entire equipment, it should be carried out on representative parts or on smaller equipment designed with the same proportions. Relevant product standards should stipulate the number of specimens, specimen installation, combination, positioning conditions (such as ceiling, floor or wall installation), pretreatment methods (if any), and whether they are powered or running during the test. If the product standard does not specify details, they should be specified by the manufacturer's instructions. 10.3 Application of test requirements and judgment of test results. The application of general test requirements and the acceptance conditions of the test when the equipment has drain holes and ventilation holes are stipulated by the relevant product standards. If there are no such provisions, the provisions of this standard shall be followed.
The judgment of test results is stipulated by relevant product standards. If not specified, the acceptance conditions of this standard shall be regarded as minimum requirements. 10.4 Test conditions for the first characteristic digit
The test conditions for the first characteristic digit are shown in Table 8.0mm, a sufficient gap must be maintained between the test tool and the dangerous parts with a length of 100mm
Test conditions
See regulations
14.2
14.2
14.2|| tt||14.2
If the enclosure is suitable for use in classes below a certain class, this additional letter is only required to designate that class. Tests below this level need not be performed if the test is clearly applicable to all levels below that level. See Chapter 14 for testing.
See Appendix A for examples of IP codes.
8 supplementary letters
In relevant product standards, supplementary letters may be used to indicate supplementary content. Supplementary letters are placed after the second characteristic number or additional letters. The supplementary content should be consistent with the requirements of this standard, and the product standard should clearly state the supplementary requirements for this level of testing. The letters and meanings of supplementary content are shown in Table 7. Word
H
Mother
M
s
W
High voltage equipment
GB4208—93||tt| |Table 7 supplementary letters and their meanings
Contains
meaning
Waterproof test is carried out when the movable parts of the equipment (such as the rotor of the rotating motor) are running. Components (such as the rotor of a rotating electrical machine) that are suitable for the specified climatic conditions and have additional protective features or processes when stationary. Supplementary letters other than those listed in Table 7 may be used in product standards. In order to avoid repeated use of supplementary letters, the requirements for citing new letters in product standards are shown in Appendix B8.
If there are no letters S and M, it means that the protection level has nothing to do with whether the equipment components are running or not, and the test needs to be done both when the equipment is running and when it is stationary. However, if the test is obviously passable under another condition, it is generally sufficient to do the test under one condition. 9Mark
Product standards should stipulate the requirements for marking. For the following situations, product standards should also make appropriate provisions for marking methods: a. When one part of the shell has a different protection level from another part; when the installation position affects the protection level; b.
c.| |tt||The maximum diving depth and time must be stated. 10 General requirements for testing
10.1 Environmental conditions for waterproof and dustproof testing
Unless otherwise specified in the relevant product standards, the test should be conducted under the specified standard environmental conditions. , during the test, the recommended environmental conditions are as follows: Temperature range: 15~35℃
Relative humidity: 25%~75%
Atmospheric pressure: 86~106kPa
(860~1060mbar )
10.2 Sample
The test specified in this standard is a type test. Unless otherwise specified in the product standard, the samples used for each test should be clean and new. All components should be installed in place as specified by the manufacturer.
If the test cannot be carried out on the entire equipment, it should be carried out on representative parts or on smaller equipment designed with the same proportions. Relevant product standards should stipulate the number of specimens, specimen installation, combination, positioning conditions (such as ceiling, floor or wall installation), pretreatment methods (if any), and whether they are powered or running during the test. If the product standard does not specify details, they should be specified by the manufacturer's instructions. 10.3 Application of test requirements and judgment of test results. The application of general test requirements and the acceptance conditions of the test when the equipment has drain holes and ventilation holes are stipulated by the relevant product standards. If there are no such provisions, the provisions of this standard shall be followed.
The judgment of test results is stipulated by relevant product standards. If not specified, the acceptance conditions of this standard shall be regarded as minimum requirements. 10.4 Test conditions for the first characteristic digit
The test conditions for the first characteristic digit are shown in Table 8.
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