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NB/T 10295-2019: (Household and similar plugs and sockets)
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NB/T 10295-2019
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Basic data | Standard ID | NB/T 10295-2019 (NB/T10295-2019) | | Description (Translated English) | (Household and similar plugs and sockets) | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | K30 | | Classification of International Standard | 29.120.30 | | Word Count Estimation | 13,127 | | Date of Issue | 2019-11-04 | | Date of Implementation | 2020-05-01 | | Issuing agency(ies) | National Energy Administration | NB/T 10295-2019: (Household and similar plugs and sockets)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Plugs and socket-outlets for household and similar purposes-Desktop socket-outlets
ICS 29.120.30
K 30
NB
Energy Industry Standards of the People's Republic of China
Household and similar plugs and sockets desktop sockets
2019-11-04 released
2020-05-01 implementation
Issued by National Energy Administration
Table of contents
Foreword...III
1 Scope...1
2 Normative references...1
3 Terms and definitions...1
4 General requirements...2
5 Test overview...2
6 Ratings...2
7 Classification...3
8 Logo...3
9 Size check...3
10 Protection against electric shock...3
11 Grounding Measures...3
12 Terminals and ends...4
13 The structure of the fixed desktop socket...4
14 Interlocking socket...4
15 Resistance to aging, protection provided by the housing and moisture resistance...4
16 Insulation resistance and electric strength...4
17 Working of the ground contact...5
18 Temperature rise...5
19 Breaking capacity...5
20 Normal operation...5
21 Force required to pull out the plug...5
22 Flexible cable and its connection...5
23 Mechanical strength...6
24 Heat resistance...6
25 Screws, current-carrying parts and their connections...7
26 Creepage distance, electrical clearance and distance through sealant...7
27 Abnormal heat resistance, flame resistance and tracking resistance of insulating materials...7
28 Anti-rust performance...7
Appendix A (Normative Appendix) List of Samples Required for Test...10
References...11
Figure 1 Schematic diagram of the desktop opening size of the square structure...8
Figure 2 Schematic diagram of 23.2 compression test...8
Figure 3 Schematic diagram of 23.3 impact test...9
Table 1 Preferred combination of type and rating...3
Table A.1 List of samples required for the test...10
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by China Electrical Equipment Industry Association.
This standard is under the jurisdiction of the National Electrical Accessories Standardization Technical Committee (SAC/TC 67).
Drafting organizations of this standard. Philips Technology Co., Ltd., Weikai Testing Technology Co., Ltd., Bull Group Co., Ltd., Panasonic Corporation
Information Instrument (Shanghai) Co., Ltd., Dongguan Liansheng Wire and Cable Co., Ltd., Legrand (Beijing) Electric Co., Ltd., Hangzhou Hongyan Electric
Co., Ltd., Tianji Electric (Shenzhen) Co., Ltd., Siemens (China) Co., Ltd., Huizhou Mani Electric Industrial Co., Ltd.,
Shenzhen Shenghe Communication Co., Ltd., China National Electrical Equipment Research Institute Co., Ltd., Nice Electric (Jiaxing) Co., Ltd., Zhejiang China Telecom
Co., Ltd., Zhejiang Delixi International Electrical Co., Ltd., Yuehua Holding Group Co., Ltd., Beijing Aosheng Innovation Technology Co., Ltd., South
Tongshi Zeshan Electric Co., Ltd., Guangdong Bengao Hardware Products Co., Ltd., China Saibao Laboratory.
The main drafters of this standard. Zhou Yipeng, Cai Jun, Cai Yingfeng, Yan Jingjing, Qiu Hong, Shen Tao, Wang Fengqin, Xie Xianqun, Cha Pengzhan, Peng
Jia Gang, Wu Bochun, Li Xiqin, Zhang Lirong, Qu Hailiang, Ke Hanwen, Wang Chaosheng, Liu Qingping, Zhou Yaping, Liu Le, Wang Shenghong, Luo Deyuan,
Li Xin, Chen Kejie.
Household and similar plugs and sockets desktop sockets
1 Scope
This standard applies to indoor use, only for single-phase AC, rated voltage above 50 V but not more than 440 V, rated current not
Desktop sockets for household and similar purposes over 16 A.
For desktop sockets equipped with screwless terminals, the maximum rated current is limited to 16 A.
Desktop sockets that meet the requirements of this standard are suitable for use in ambient temperatures that usually do not exceed 35 ℃ and occasionally reach 40 ℃.
In places with special conditions, such as ships, vehicles, and dangerous places where explosions may occur, special structures may be required.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 2099.1-2008 General requirements for household and similar plugs and sockets-Part 1 General requirements
GB/T 2423.17 Environmental testing of electrical and electronic products Part 2.Test method Test Ka. Salt spray
GB/T 6461 Rating of samples and test pieces of metal and other inorganic coatings on metal substrates after corrosion tests
GB/T 17466.1 Household and similar fixed electrical installations and electrical accessories installation boxes and enclosures-Part 1.General requirements
3 Terms and definitions
The following terms and definitions defined in GB/T 2099.1-2008 apply to this document.
3.1
Desktop socket-outlets
Installed on a desktop or similar place, and formed a whole with the socket for connection with fixed wiring.
Note. After leaving the installation place, the socket cannot be used alone.
3.2
Function module
The installation unit used in the desktop socket to achieve functions such as power access, safety protection, and signal transmission.
3.3
Desktop socket-outlet with bounding device
A desktop socket that uses a pop-up method to achieve normal use.
3.4
Desktop socket-outlet with revolving device
The desktop socket for normal use is realized by rotating.
3.5
Desktop socket-outlet with turned device
The cover is opened manually by pushing and pulling to realize the desktop socket for normal use.
4 General requirements
4.1 The design and structure of the desktop socket should be able to ensure that. during normal use, it has reliable performance and will not cause cost to the user or the surrounding environment
Risks affecting safety within the meaning of the standard.
Compliance is checked through all relevant requirements and prescribed tests.
4.2 Whether the desktop socket installation box is qualified should be checked by all relevant requirements and prescribed tests of GB/T 17466.1.
4.3 The devices installed on the desktop sockets (such as USB charging ports) should meet the requirements of the corresponding standards.
5 Test overview
5.1 The following tests shall be carried out to verify compliance with the requirements specified in this standard.
-A type test shall be carried out on a representative sample of each desktop socket;
- When applicable, routine tests shall be carried out on each desktop socket manufactured in accordance with this standard.
The tests carried out in accordance with this standard are type tests.
5.2 Unless otherwise specified, the samples shall be tested as delivered and under normal use conditions.
A desktop socket with a complete enclosure must be provided with a mounting box, and the test should be carried out together with its mounting box.
5.3 Unless otherwise specified, the test should be carried out at an ambient temperature of (15～35)℃ in the order of the various clauses.
When in doubt, the test should be carried out at an ambient temperature of (20 ± 5) °C.
If there is a neutral line, the neutral line is treated as a pole.
5.4 Carry out all relevant tests with 3 samples.
According to the test of 12.3.11 in GB/T 2099.1-2008, the total number of samples with screwless terminals required to be sent to the additional socket is at least
Five.
According to the test of 12.3.12 in GB/T 2099.1-2008, 3 additional socket samples need to be sent, and each sample should be used for a clamping element
experimenting.
For the tests of Chapter 19 and Chapter 20, 3 additional samples may be required (see Chapter 20, Chapter 21 and Figure 43 of GB/T 2099.1-2008).
Test 23.5 may require 3 additional samples.
The test of Chapter 27 may require 3 additional samples.
Note. A list of the number of samples required for the test is given in Appendix A.
5.5 Samples need to be sent for testing of all related items. If all tests are met, the standard requirements are met.
If a sample fails a test due to assembly or manufacturing defects, the test and the previous test results that may have an impact on it
One (or several) tests should be retested, and the retest and subsequent tests should use another set of samples in the required order.
All samples shall pass the retest.
Note. The applicant may submit additional samples at the same time as the number of samples specified in 5.4, in case any samples fail. In this way, the test station
There is no need to wait for the applicant to make a request again to test the additional sample, and only when there is another unqualified item will it be judged as unqualified. in case
If additional samples are not submitted at the same time, as long as any sample fails, it will be judged as unqualified.
6 Rating
6.1 The desktop socket should be of the preferred type shown in Table 1 and the preferred voltage and current ratings shown in Table 1.
Note. The standardized values and graphics of my country's existing systems are in GB/T 1002.
6.2 The preferred degree of protection for desktop sockets should be. IP20, IP40 or IP44.
7 categories
7.1 Classified by the materials exposed on the desktop after installation.
--Metal desktop sockets, such as copper alloy, aluminum alloy, zinc alloy, stainless steel, etc.;
--Plastic material desktop socket;
--Mixed material desktop sockets, such as exposed parts have both metal parts and plastic parts.
7.2 Classification according to the way the cover is opened.
-Pop-up desktop socket;
--Rotating desktop socket;
--Clamshell desktop socket.
8 signs
The logo of the desktop socket should comply with the regulations in Chapter 8 of GB/T 2099.1-2008 except 8.4.
9 size check
9.1 The marking of the desktop socket should comply with the provisions in Chapter 9 of GB/T 2099.1-2008 except for 9.3.
9.2 The following dimensions are recommended for desktop openings for desktop socket installation.
--Circular structure. φ 60 mm, φ 80 mm, φ 100 mm, φ 120 mm.
--Square structure. see Figure 1.
10 Protection against electric shock
The protection against electric shock of the desktop socket should comply with the provisions of GB/T 2099.1-2008 Chapter 10 except 10.4.
11 Grounding measures
The grounding measures of the desktop socket should comply with the provisions of Chapter 11 of GB/T 2099.1-2008.
12 Terminals and ends
The terminals and ends of the desktop socket should comply with the provisions of Chapter 12 of GB/T 2099.1-2008.
13 The structure of the fixed desktop socket
13.1 The structure of the fixed desktop socket should comply with the provisions of Chapter 13 of GB/T 2099.1-2008.
13.2 The structure of the desktop socket should ensure that the wiring of the external electrical components can be reliably fixed and will not loosen during use.
Compliance is checked by manual operation.
13.3 The cover of the desktop socket should have sufficient mechanical strength.
Compliance is checked by carrying out the tests of 23.2 and 23.3.
13.4 The cover or functional module of the desktop socket should have a reliable structure and flexible opening.
Compliance is checked by observation and the tests in Chapter 20.
13.5 The structure of the desktop socket should be ensured to be reliably fixed to the installation surface and will not loosen during use.
Compliance is checked by manual operation.
13.6 The desktop socket should have a hole specially used for drainage. The diameter of the drainage hole should not be less than 5 mm or the area should not be less than 20 mm2 (length and width are not small).
At 3 mm). The size of the drain hole should be provided by the manufacturer (if necessary), and the drain hole should be able to do so when the product is open or closed.
Water can be drained out of the shell.
Compliance is checked by observation and measurement.
Note. The gaps between product assembly or the gaps between structures are not regarded as drainage holes.
13.7 The desktop socket should have a protective door.
14 Interlocking socket
The desktop socket interlocked with the switch shall comply with the provisions of Chapter 15 of GB/T 2099.1-2008.
15 Resistance to aging, protection provided by the shell and moisture resistance
This chapter of GB/T 2099.1-2008 applies after the following changes.
15.1 The aging resistance, the protection provided by the shell and the moisture resistance of the desktop socket shall comply with GB/T 2099.1-2008 Chapter 16 except 16.2.1
Regulations.
15.2 The desktop socket and its shell shall provide a degree of protection against the entry of hazardous parts and the harmful effects of solid objects.
Install the desktop socket on a level surface as required for normal use. The desktop socket is installed in a proper installation according to the manufacturer's instructions
In the box.
The screws of the shell should be tightened with 2/3 of the torque specified in Table 6 of GB/T 2099.1-2008.
Parts that can be removed without tools are removed.
If the electrical accessories have successfully passed this test, then the combination of these single electrical accessories is deemed to have passed the test.
16 Insulation resistance and electric strength
16.1 The insulation resistance and electrical strength of the desktop socket should comply with the provisions in Chapter 17 of GB/T 2099.1-2008 except for 17.1.2 and 17.2.
16.2 Between the parts specified in 17.1 of GB/T 2099.1-2008, apply a substantially sinusoidal waveform with a frequency of 50 Hz.
Voltage 1 min.
The test voltage between all connected poles and the body is 2 500 V, and the test voltage between other parts is 2 000 V.
At the beginning, the applied voltage should not be more than half of the specified value, and then quickly increase to the specified value.
During the test, no flashover or breakdown shall occur.
Note 1.The high-voltage transformer used in the test should be designed so that. when the output voltage is adjusted to the corresponding test voltage and the output terminal is short-circuited, the output current
At least.200 mA.
Note 2.When the output current is less than 100 mA, the overcurrent relay must not operate.
Note 3.The root mean square value of the applied test voltage should be within ±3%.
Note 4.Glow discharge that does not cause a voltage drop can be ignored.
17 Working of the ground contact
The grounding contact should provide sufficient contact pressure, and should not be degraded during normal use.
Compliance is checked by the tests in Chapter 18 and Chapter 20.
18 Temperature rise
The temperature rise of the desktop socket should comply with the provisions of Chapter 19 of GB/T 2099.1-2008.
19 Breaking capacity
The breaking capacity of the desktop socket should comply with the provisions of Chapter 20 of GB/T 2099.1-2008.
20 Normal operation
The normal operation of the desktop socket should comply with the provisions of Chapter 21 of GB/T 2099.1-2008 except for the last paragraph.
Only through the movement of the moving parts can the functional module reach the desktop socket in the normal use state, and it is operated according to the movement mode specified by the manufacturer.
5,000 trips (10,000 trips).
After the test, the sample shall not appear.
-Abrasion affecting future use;
-Loose electrical or mechanical connections;
-Mechanical damage that affects normal use.
After the tests in this chapter, perform the tests in GB/T 2099.1-2008 11.5, 13.2 and Chapter 22 of this standard.
21 Force required to pull out the plug
The force required to pull out the plug from the desktop socket should comply with the provisions of Chapter 22 of GB/T 2099.1-2008.
22 Flexible cable and its connection
22.1 The desktop socket flexible cable and its connection shall comply with the provisions of Chapter 23 of GB/T 2099.1-2008.
22.2 Insulated cords should be used for internal connection wires in desktop sockets, and the cords should be of sufficient length so that there is no connection point
Excessive stress damage.
When it must be connected to a terminal that allows only hard copper wires to be connected, the flexible wire should be welded, crimped or equivalently connected to the hard connector.
Connect to the terminal after the method is connected. The connection between the flexible wire and the hard connector shall have an insulating sheath.
Compliance is checked by the following tests and observations immediately after the tests in Chapter 20.
--When the test current specified in Chapter 20 flows through each contact and the corresponding flexible wire, the voltage drop between them shall not exceed 10 mV
(The measuring point is as close as possible to the contact point);
--The sheath (if any) must not be separated from the cord body;
--The insulation of the cord must not show signs of wear;
--The broken wire of the flexible cord shall not pierce the insulation and be exposed;
--If a clamping piece is used at the end of the cord, the clamping piece shall not be loose or damaged from the cord.
23 Mechanical strength
23.1 The desktop socket should have sufficient mechanical strength to withstand the mechanical stress generated during installation and use.
Compliance is checked by the appropriate tests in 23.2 and 23.3.
23.2 Desktop sockets should be able to withstand the following compression test.
The desktop socket should be placed on a level surface. Place the desktop socket horizontally on the simulated desktop and place the simulated desktop horizontally.
Note 1.The simulated desktop and bracket should have sufficient strength, and no deformation or damage that affects the test result should occur during the test. Steel plate or wooden board can be used
And other materials.
Note 2.The simulated desktop can be opened to place the desktop socket in accordance with the instructions of the desktop socket.
The sample was subjected to the compression test performed by the test device shown in FIG. 2.
The cover of the desktop socket is closed, the cube steel block is placed in the middle of the cover of the sample, and pressure is applied to the cube steel block.
The sample is uniformly increased in load to.200 N within 30 s and maintained for 1 min.
Place the cube steel block in sequence at the four most unfavorable points on the edge of the cover, and repeat the above test.
After the test.
-The cover must not be deformed or damaged that affects normal use;
--The parts used to keep the cover in the normal position shall not be deformed or damaged that affects normal use.
23.3 The desktop socket should be able to withstand the following impact test.
When the lid is closed, the sample is subjected to the impact test performed by the test device shown in Figure 3.
Let the falling weight drop from a height of 300 mm, the weight of the falling weight is (1 000±4) g.
The impact points of the drop hammer should be evenly distributed.
The method of impact is as follows.
- Make an impact on the center. After the sample moves horizontally as a whole, impact at the most unfavorable point between the center point and the edge of the cover.
once;
-Impact once at the center point of the parts used to open the cover.
Note. For desktop sockets that use a pressing mechanism to open the cover, there will be no impact on the pressing mechanism.
After the test, the desktop socket must not be deformed or damaged that affects normal use.
23.4 The desktop socket shall comply with the provisions of 24.14~24.18 in GB/T 2099.1-2008.
23.5 The protective door of the desktop socket should meet the requirements of 24.8 in GB/T 2099.1-2008.
24 Heat resistance
The heat resistance of the desktop socket should meet the requirements of Chapter 25 of GB/T 2099.1-2008.
25 Screws, current-carrying parts and their connections
The screws, current-carrying parts and their connections of desktop sockets should comply with the provisions of Chapter 26 of GB/T 2099.1-2008.
26 Creepage distance, electrical clearance and distance through sealant
The creepage distance, electrical clearance and distance through the sealant of the desktop socket should meet the requirements of Chapter 27 of GB/T 2099.1-2008.
27 Abnormal heat resistance, flame resistance and tracking resistance of insulating materials
27.1 The resistance to abnormal heat, flame resistance and tracking resistance of the desktop socket insulation material shall meet the requirements of 28.1 in GB/T 2099.1-2008.
27.2 The tracking resistance of the desktop socket insulation material should meet the requirements of 28.2 in GB/T 2099.1-2008.
28 Anti-rust performance
28.1 The anti-rust performance of desktop sockets should meet the requirements of Chapter 29 of GB/T 2099.1-2008.
28.2 The exposed iron parts of the desktop socket during normal use should be properly protected to prevent rust.
Compliance is judged by the following tests and ratings.
Test according to GB/T 2423.17, the duration of the continuous atomization test is 24 hours, according to normal use, the cover is closed and placed horizontally.
After the test, perform protection rating according to GB/T 6461.
--The front protection level of exposed metal parts when the lid is closed shall not be lower than 9, and the protection level of the side and back shall not be lower than
Level 8;
--The protection level of metal parts exposed after the cover is opened shall not be lower than 8.
AA
Appendix AA
(Normative appendix)
List of test samples required
The number of samples required for the test according to 5.4 is shown in Table A.1.
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