GB/T 18384.3-2015[Including 2017-XG1 Modification] Electrically propelled road vehicles -- Safety specifications -- Part 3: Protection of persons against electric shock (English PDF)

Foreword

GB/T 18384 "Electrically propelled road vehicles - Safety specifications" is divided into

three parts.

- Part 1.On-board rechargeable energy storage system (REESS);

- Part 2.Vehicle operational safety means and protection against failures;

- Part 3.Protection of persons against electric shock.

This Part is Part 3 of GB/T 18384.

This Part was drafted according to the given rules of GB/T 1.1-2009.

This Part replaces GB/T 18384.3-2001 "Electric vehicles - Safety specification - Part 3.

Protection of persons against electric shock". Compared with GB/T 18384.3-2001, except

for structure difference in article and chapter and editorial modification, the main technical

changes are as follows.

- Modify the applicable scope of the standard (see Chapter 1; Chapter 1 in version 2001);

- Delete the terms and definitions that have already been defined in the GB/T 19596

(see Chapter 3 in version 2001);

- Add the definition of the rechargeable energy storage system (see 3.1);

- Add the definition of "voltage Class A electric circuits" (see 3.2);

- Add the definition of "voltage Class B electric circuits" (see 3.3);

- Add the definition of "basic protection" (see 3.4);

- Add the definition of "barriers" (see 3.5);

- Add the definition of "enclosures" (see 3.6);

- Modify the definition of "potential equalization" (see 3.7);

- Add the definition of "balance of electric power system" (see 3.8);

- Modify the voltage class division (see Chapter 4; Chapter 4 in version 2001).

- Add the marking requirements (see Chapter 5);

- Modify the protection in case of basic protection failure (see 6.3; 5.3 and Chapter 6 in

version 2001);

- Modify the requirements of isolation resistance (see 6.3.2; 6.2 in version 2001);

- Add the capacitance coupling requirements (see 6.3.3);

- Add power-off requirements (see 6.3.4);

- Modify the barriers/enclosures requirements (see 6.6; 6.3 in version 2001);

- Modify the measuring method of isolation resistance (see 7.2; 6.2.2 in version 2001).

- Modify the test method of withstand voltage (see 7.3; 6.2.3 in version 2001);

- Modify the test method of potential equalization (see 7.4; 6.4 in version 2001);

- Modify the waterproof requirements (see Chapter 8; Chapter 7 in version 2001).

This Part uses redrafting method to modify and adopt ISO 6469-3.2011 "Electrically

propelled road vehicles - Safety specifications - Part 3.Protection of persons against

electric shock".

The technical differences between this Part and ISO 6469-3.2011 and its reasons are as

follows.

- Delete some terms and definitions that have already been defined in the GB/T 19596,

see Chapter 3.

- Delete the explanation statement in Chapter 4 Environment and Operating Conditions

in ISO 6469-1.2009.The related contents have been included in the experimental

condition; the numbers of later sections and chapters are increased sequentially, see

Chapter 4;

- Add the waterproof requirements;

- Delete the requirements about REESS crash test. There have been corresponding

crash standards in China; the numbers of later sections and chapters are increased

sequentially, see Chapter 7.

This Part was proposed by the Ministry of Industry and Information Technology of People's

Republic of China.

This Part shall be under jurisdiction of the National Vehicle Standardization Technical

Committee (SAC/TC 114).

Responsible drafting organizations of this Part. China Automotive Technology Research

Center, Anhui Ankai Vehicle Co., Ltd., Hunan CSR Times Electric Vehicle Co., Ltd., and

Shanghai Motor Vehicle Inspection Center.

This Part was first-time issued in July 2001; this is the first revision.

1 Scope

This Part of GB/T 18384 specifies the requirements for the electric vehicle's electric drive

system and auxiliary system of conduction connection (if any), so as to protect the persons

in car and out of the car from electric shock.

2 Normative references

The following documents are essential to the application of this document. For dated

references, only the dated version is applicable to this document. For undated references,

its latest version (including all amendments) is applicable to this document.

GB 2893 Safety colours (GB 2893-2008, ISO 3864-1.2002, MOD)

GB 2894 Safety signs and guideline for the use

GB 4208 Degrees of protection provided by enclosures (IP code) (GB 4208-2008, IEC 60529.2001, IDT)

GB 4943.1 Information technology equipment - Safety - Part 1.General requirements

(GB 4943.1-2011, IEC 60950-1.2005, MOD)

3 Terms and definitions

For the purpose of this document, the following terms and definitions AND those defined

in GB/T 19596 shall apply.

30 V a.c. (rms), or less than or equal to 60 V d.c.

4 Voltage Classes

Voltage class B's electric energy storage systems, such as REESS and fuel cell stack,

shall be marked with the symbol as shown in Figure 1.

The outer layer of cable and wire-harness in Class B electric circuit shall be distinguished

by orange, except for those inside the enclosures or behind the barriers.

6 Method and requirement of electric shock protection for persons

7 Test method of electric shock protection

In principle, the protection method mentioned in Chapter 6 shall be under the condition that

power inlet is disconnected; such method shall be tested and confirmed in each Class B

electric circuit on the vehicle.

Prior to the measurement, the device under test shall be subjected to a preconditioning

period of at least 8 h at 5°C±2°C, followed by a conditioning period of 8 h at a temperature

of 23°C±5°C, a humidity of 90+10-5%, and an atmospheric pressure of between 86 kPa and

106 kPa, so as to achieve the dew point.

8 Waterproof

Waterproof monitoring shall be provided through an isolation resistance's monitoring

system, or by a covered Class B electric circuit to prevent its exposure to water, or by other

ways. If the vehicle is equipped with isolation resistance monitoring system, it shall meet

the requirements in 8.3.1; if the vehicle is not equipped with isolation resistance monitoring

system, test as specified in 8.2 shall be carried out and meet the requirements in 8.3.2.

9 Owner's manual

Special attention to electric safety shall be given in the owner's manual.

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