QB/T 5244-2018Fur-liner garment (English PDF)

3.1 Vehicle coupler

A component that can connect a cable to an electric vehicle, consisting of a vehicle connector and a vehicle socket.

[SOURCE. GB/T 20234.1-2023, 3.6]

3.2 Vehicle connector

The movable part of the vehicle coupler that is connected to the charging cable.

[SOURCE. GB/T 20234.1-2023, 3.8]

3.3 Function box

A device that is contained in the Mode 2 cable assemblies, implementing control guidance functions and safety functions.

3.4 Operating mode

It is used to describe the input and output status of the sample under test.

Operating mode 1.The sample under test is not connected to the input and output.

Operating mode 2.The input end of the sample under test is connected to the AC power supply, but it is not in the charging output state.

Operating mode 3.The input and output of the sample under test are both in the rated state.

4.1 Requirements for functional status level

The functional level of the cable assembly shall meet the relevant requirements of Clause 6 of

GB/T 28046.1-2011.

Level A. All functions of the cable assembly meet the design requirements during and after the test.

Level B. All functions of the cable assembly meet the design requirements during the test, but one or more functions are allowed to exceed the specified tolerance. All functions shall automatically recover to the specified limits after the test.

Level C. One or more functions of the cable assembly do not meet the design requirements during the test, but all functions can automatically recover to normal operation after the test.

Level D. One or more functions of the cable assembly do not meet the design requirements during the test and cannot automatically recover to normal operation after the test; and the device or system needs to be reactivated through simple operations.

4.2 General requirements

4.2.1 The easily accessible surface of the cable assembly for conductive charging of electric vehicles with a function box shall be free of burrs, flash and similar sharp edges.

4.2.2 The cable assembly housing shall be marked with the manufacturer's name or trademark, product model, rated voltage and rated current, etc.; and the writing shall be clear and not easy to erase. The function box shall have a high-voltage warning mark.

4.2.3 The vehicle connector of the cable assembly shall comply with the provisions of GB/T

20234.1-2023 and GB/T 20234.2-2015.

4.2.4 The three-core plug of the cable assembly shall comply with the provisions of GB/T

2099.1 and GB/T 1002.

4.2.5 The shell protection level of the vehicle connector and the three-core plug of the cable assembly and the corresponding socket after being plugged in shall at least meet the requirements of IPXXD in GB/T 4208-2017.

4.3 Control and guidance function

The control and guidance function of the cable assembly shall comply with the relevant provisions of GB/T 18487.1.

4.4 Safety protection function

4.4.5 Residual current protection

The cable assembly shall at least be able to meet the operating characteristic requirements for type A residual current protection devices in GB/T 6829-2017.The rated residual operating current values of different products should refer to the provisions of Table 1.

4.4.6 Overtemperature protection

The function box of the cable assembly shall have an overtemperature protection function.

When the temperature exceeds its set value, the function box shall enter the overtemperature protection state, and the functional state level shall be no lower than Level D. When the temperature returns to normal, it shall be able to charge normally. The specific temperature value and response time shall be subject to the manufacturer's agreed requirements.

4.4.7 Grounding warning function

When the cable assembly cuts off the electrical connection of the protective grounding conductor before charging, the charging shall not be started. When the electrical connection of the protective grounding conductor is cut off during charging, the output shall be cut off within

100 ms, and an alarm shall be given through an indicator light or other means.

4.5 Electrical insulation performance

4.5.1 Insulation resistance

The insulation resistance of the cable assembly shall meet the following requirements.

a) The insulation resistance between each independent live port loop and the ground (housing) shall be no less than 100 Mohm;

b) The insulation resistance between each live port loop that is not electrically connected to each other shall be no less than 100 Mohm.

4.5.2 Withstand voltage

The withstand voltage performance between each independent live port circuit of the cable assembly and the ground (housing), and between each live port circuit that is not electrically connected to each other shall meet the requirements that under 2,000 V AC, test duration of 1 min, there is no breakdown and arc phenomenon, and leakage current shall be no greater than

10 mA.

4.5.3 Impulse withstand voltage

Apply 3 short-term impulse voltages of positive polarity and 3 short-term impulse voltages of negative polarity lightning waves between each independent live port circuit of the cable assembly and the ground (housing), and between each live port circuit that is not electrically connected to each other, with each interval no less than 5 s, impulse voltage 2.5 kV, impulse waveform 1.2/50 µs, power supply impedance 500 ohm, other circuits and exposed conductive parts are grounded during the test, and no breakdown discharge shall occur at the test position.

4.6 Environmental adaptability

4.6.1 Environmental conditions

4.6.1.1 Ambient temperature

Unless otherwise specified, the cable assembly shall meet the ambient temperature limits specified in Table 2.

4.6.1.3 Altitude

Altitude is no higher than 4,000 m.

4.6.2 Storage at low temperature

The storage performance at low temperature of cable assemblies shall meet the requirements of

5.1.1.1 in GB/T 28046.4-2011.

4.6.3 Operating at low temperature

The operating performance at low temperature of cable assemblies shall meet the requirements of 5.1.1.2 in GB/T 28046.4-2011.

4.6.4 Storage at high temperature

The storage performance at high temperature of cable assemblies shall meet the requirements of 5.1.2.1 in GB/T 28046.4-2011.

4.6.5 Operating at high temperature

The operating performance at high temperature of cable assemblies shall meet the requirements of 5.1.2.2 in GB/T 28046.4-2011.

4.6.6 Temperature cycle

The temperature cycle performance of the cable assembly shall meet the requirements of 5.3.1 of GB/T 28046.4-2011.

5.1 Appearance structure

5.1.1 Check the appearance and structure of the product by observation and manual test.

5.1.2 Use a cotton cloth soaked in water to wipe the mark for 5 s; and then use a cotton cloth soaked in gasoline to wipe for 5 s; the mark after wiping is still clearly visible.

NOTE. It is recommended to use gasoline composed of hexane solvent, the volume content of the aromatic agent of the hexane solvent is up to 0.1%; the kauri-butanol value is about 29; the initial boiling point is about 65 °C; the dry point is about 69 °C; and the concentration is about 0.68 g/cm3.

5.2 Control and guidance function test

The test is carried out in accordance with the requirements of 6.4 in GB/T 34657.1-2017.

5.3 Safety protection function test

5.3.1 Input overvoltage protection

Connect the cable assembly to the load and the control guide simulation device; start the cable assembly under the rated input conditions; make it operate under the rated power state;

gradually adjust the AC input voltage to the overvoltage protection value; and observe the output state of the cable assembly.

5.3.2 Input undervoltage protection

Connect the cable assembly to the load and the control guide simulation device; start the cable assembly under the rated input conditions; make it operate under the rated power state;

gradually adjust the AC input voltage to the undervoltage protection value; and observe the output state of the cable assembly.

5.3.3 Output overload protection

Connect the cable assembly to the load and the control guide simulation device; under the rated input conditions, make the cable assembly under the rated power state; adjust the load to simulate the output overload; and observe the output state of the cable assembly.

5.3.4 Output short-circuit protection

Connect the cable assembly to the load and the control guide simulation device; under the rated input conditions, make the cable assembly under the rated power state; adjust the load to simulate the short-circuit fault; and observe the output state of the cable assembly.

5.3.5 Residual current protection

Test in accordance with the provisions of GB/T 6829.

5.3.6 Overtemperature protection

Put the cable assembly in a temperature chamber; connect the load and control guide simulation device; set the output voltage to the rated voltage; under the rated input conditions, put the cable assembly under the rated power state; and observe the output state of the cable assembly when the temperature of the temperature chamber exceeds its set value.

5.3.7 Grounding warning

Connect the cable assembly to the load and control guide simulation device; cut off the grounding wire connection before and during operation; and observe the output status of the cable assembly.

5.4 Electrical insulation test

5.4.1 Insulation resistance

5.4.2 Dielectric strength

5.4.3 Impulse withstand voltage

Apply short-term impulse voltages of 3 positive and 3 negative lightning waves, each with a interval of no less than 5 s; impulse voltage 2.5 kV, pulse waveform 1.2/50µs, power supply impedance 500 ohm; and other circuits and exposed conductive parts are grounded during the test.

Test location. between non-electrically connected live circuits, and between each independent live circuit and the ground (metal casing).

5.5 Environmental adaptability test

5.5.1 Storage at low-temperature

Put the cable assembly in a temperature chamber with an initial temperature of room temperature and connect all electrical harnesses intact; adjust the temperature of the temperature chamber to -40 °C ± 2 °C; and the cable assembly is in a non-powered state during storage at low-temperature for 24 h.

5.5.4 Operating at high temperature

After the test of storage at high temperature, adjust the temperature of the temperature chamber to the temperature value of operating at high temperature and keep it for 2 h; then power on the cable assembly to make it operate at rated power and continue to operate for 48 h.

5.5.5 Temperature cycle test

According to the requirements of 5.3.1 in GB/T 28046.4-2011, the cable assembly is placed in a temperature chamber and subjected to the following temperature change environment. The cable assembly is required to operate normally when the temperature reaches -40°C; and during the period of 210 min to 410 min, it takes operating mode 3; and the test cycle is 30 times. The test time and corresponding temperature requirements are shown in Table 4.

5.5.6 Temperature shock test

Time/min Temperature/°C

According to the requirements of 5.3.2 of GB/T 28046.4-2011, set the high temperature to 85 °C,

20 min; low temperature to -40 °C, 20 min; conversion time is less than 30 s; the number of cycles is 100 times (1 time for hot and cold alternation), and take operation mode 1.

5.5.7 Damp heat cycle test

According to the requirements of 5.6.2.2 of GB/T 28046.4-2011, set the upper limit temperature to 55 °C; the number of cycles. 6; each cycle is 24 h. Perform insulation resistance and dielectric strength retests 2 h before the end of the damp heat test.

5.5.8 Salt spray test

According to the requirements of 5.5.1 of GB/T 28046.4-2011, during the test, the cable assembly takes operating mode 1.Test chamber temperature. 35°C ± 1°C; brine concentration.

5%; brine pH value 6.5~7.2; start the test machine for testing, time. 48 h.

5.5.9 High-altitude test

Place the cable assembly in a high-altitude environment chamber; simulate the altitude of 4,000 m atmospheric pressure (62 kPa); connect the rated load and control guide simulation device;

the cable assembly takes operation mode 3, test time. 24 h.

5.5.10 Protection level

Perform the protection level test in accordance with the provisions of GB/T 4208.

5.5.11 Corrosive environment test

Perform the test in accordance with the "luggage compartment" and "external installation" required by Table 1 in GB/T 28046.5-2013; select at least 3 solvents; and the cable assembly takes operation mode 1.

5.6 Mechanical properties test

7.1 Marking

The following contents shall be clearly marked.

7.2 Packaging

7.2.1 The documents and attachments accompanying the product shall include. packing list, exit-factory inspection report, certificate of conformity, wiring diagram and installation and operation instructions.

7.2.2 There shall be protective measures in the product packaging box to prevent the product from being bumped. The outer surface of the box shall be marked with rainproof, moisture- proof, and allowed stacking layers, etc.

7.3 Transportation

7.3.1 Rainproof, snow-proof, and waterproof measures shall be taken during transportatio.

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