NB/T 10202-2019 English PDF (NBT10202-2019)

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NB/T 10202-2019: Plugs with thermal protection function for charging mode 2 of electric vehicles
NB/T 10202-2019
GB
ENERGY INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 29.120.30
K 30
Plugs with thermal protection function for charging
mode 2 of electric vehicles
ISSUED ON: JUNE 04, 2019
IMPLEMENTED ON: OCTOBER 01, 2019
Issued by: National Energy Administration
Table of Contents
Foreword ... 4 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 6 
4 General requirements ... 7 
5 Rating ... 7 
6 Categories... 7 
7 Signs ... 7 
8 Dimensions ... 8 
9 Protection against electric shock ... 8 
10 Temperature protection function ... 8 
11 Grounding measures ... 9 
12 Terminals and Terminations ... 9 
13 Aging and moisture resistance ... 9 
14 Structure ... 9 
15 Protection ... 9 
16 Insulation resistance and electrical strength ... 9 
17 Temperature rise ... 10 
18 Flexible cables and their connections ... 10 
19 Mechanical strength ... 11 
20 Current-carrying parts and their connections ... 11 
21 Creepage distances, clearances, through-sealant distances ... 11 
22 Heat resistance ... 11 
23 Resistance to abnormal heat, flame, tracking of insulating materials ... 11 
24 Corrosion and rust resistance ... 12 
25 Limit short-circuit current withstanding test ... 12 
26 Damp heat test ... 12 
27 Low temperature test ... 12 
28 Safety service life ... 12 
29 Environmental requirements ... 13 
References ... 14 
Plugs with thermal protection function for charging
mode 2 of electric vehicles
1 Scope
This standard specifies the technical requirements for the marking, structure,
electrical properties, mechanical properties, other technical requirements of
plugs with thermal protection function for charging mode 2 of electric vehicles.
This standard applies to the power supply plugs with thermal protection function
for charging mode 2 of electric vehicles, which are only used for AC current,
have a rated voltage of above 50V but not more than 250V, have a rated current
of not more than 16A (hereinafter referred to as the plug).
The plug, which conform to this standard, adopts the type and size of the single-
phase two-pole grounding plug in GB/T 1002. It does not use the type and size
of single-phase two-pole plug.
Note 1: The plug of GB/T 1003 can be used with reference to this standard.
This standard does not apply to plugs in GB/T 20234-2015.
Plugs, which conform to this standard, are suitable for use in ambient
temperatures ranging in -40°C ~ 50°C.
Note 2: The conductive charging plug, which is connected to the vehicle, complies with
GB/T 20234-2015.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) is applicable to this standard.
GB/T 1002 Single phase plugs and socket-outlets for household and similar
purposes - Types, basic parameters and dimensions
GB/T 1003 Three phases plugs and socket-outlets for household and similar
purposes - Types, basic parameters and dimensions
GB/T 2099.1-2008 Plugs and socket-outlets for household and similar
Meanwhile, it shall add the relevant descriptions on the "safety service life".
The relevant descriptions on the "safety service life" can be marked on the
instruction manual OR on the packaging.
Note: See Chapter 28 for "safety service life".
8 Dimensions
The type, basic parameters, dimensions of the plug shall meet the requirements
of GB/T 1002. Whether it is qualified shall be checked by the test in Chapter 9
of GB/T 2099.1-2008.
9 Protection against electric shock
The protection against electric shock of the plug shall meet the requirements of
Chapter 10 of GB/T 2099.1-2008.
10 Temperature protection function
10.1 The plug can realize the temperature protection function, through one of
the following measures:
- Configure a temperature protection device inside the plug, which is
connected in series in the circuit. When the temperature exceeds the
specified value, it can cut off the power supply.
Note 1: Temperature protection devices such as temperature switches, electronic
protection circuits and other devices. These devices comply with their respective
standards.
Note 2: The deviation value of temperature is determined by the manufacturer.
- A temperature sensing device is arranged in the plug, to feed back the
temperature change value to the control unit.
Note 3: Temperature sensing devices, such as PTC, NTC, PT, etc. These devices
comply with their respective standards.
Note 4: The deviation value of temperature is determined by the manufacturer.
10.2 The maximum operating temperature of the control unit, for the
temperature protection device and the temperature sensing device is 90°C; OR
the temperature value is agreed by the supplier and the buyer.
16.2 Put the plug assembly into the water tank, which has a water depth of 1m.
After 12 hours, carry out the test of 16.1.
17 Temperature rise
The temperature rise of the plug shall meet the requirements of Chapter 19 of
GB/T 2099.1-2008.
18 Flexible cables and their connections
18.1 The cable fixing parts of the plug shall meet the requirements of 23.1 of
GB/T 2099.1-2008.
18.2 The effectiveness of the cable fixing of the plug shall meet the
requirements of 23.2 of GB/T 2099.1-2008; however, the tensile test of the
flexible cable shall be modified to 90N, 25 times.
18.3 The plug shall be equipped with wires, that meet GB/T 33594 or related
standards.
For the 10A plug, the nominal cross-sectional area of the conductor of the non-
grounding wire of the equipped wire is not less than 1.5mm2.
For the 16A plug, the nominal cross-sectional area of the conductor of the non-
earthed wire of the equipped wire is not less than 2.5mm2.
18.4 The bending performance of the plug shall meet the requirements of 23.4
of GB/T 2099.1-2008.
After the bending test, the number of broken wires of each core shall not exceed
10% of the total number of conductors.
18.5 The connection, between the plug terminal and the wire, shall be reliable;
the connection shall not be disconnected, under certain tensile force.
Compliance is checked by the following test.
Apply the following force, between the wire and the terminal, for a duration of
1min; the force moves in the axial direction, at about 100mm/min:
- For a cross-sectional area of 1.5mm2, 150N;
- For a cross-sectional area of 2.0mm2, 195N;
- For a cross-sectional area of 2.5mm2, 200N.
Note: This force can be provided by weights or a pull tester.
When applying force, do not use explosive force.
After the test, the wire shall not be pulled off.
19 Mechanical strength
19.1 The mechanical strength of the plug shall meet the requirements of
Chapter 24 of GB/T 2099.1-2008.
19.2 The vehicle rolling test of the plug shall meet the requirements of 6.21 and
7.21 of GB/T 20234.1-2015.
After the test, the specimen shall be free of damage, that affects further use,
such as the breakage of the plug; however, the plug and pin, that can be
corrected with tools, are acceptable.
20 Current-carrying parts and their connections
The current-carrying parts of the plug and their connections shall meet the
requirements of Chapter 26 of GB/T 2099.1-2008.
21 Creepage distances, clearances, through-seal...