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GB/Z 17624.2-2013 (GB/Z17624.2-2013, GBZ 17624.2-2013, GBZ17624.2-2013)
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GB/Z 17624.2-2013: PDF in English (GBZ 17624.2-2013)

GB/Z 17624.2-2013
GZ
NATIONAL STANDARDIZATION GUIDING TECHNICAL
DOCUMENT OF THE PEOPLE'S REPUBLIC OF CHINA
ICS 33.100
L 06
GB/Z 17624.2-2013 / IEC/TS 61000-1-2:2008
Electromagnetic compatibility - General - Methodology for
the achievement of functional safety of electrical and
electronic systems including equipment with regard to
electromagnetic phenomena
(IEC/TS 61000-1-2:2008, Electromagnetic compatibility (EMC) - Part 1-2: General -
Methodology for the achievement of functional safety of electrical and electronic
systems including equipment with regard to electromagnetic phenomena, IDT)
ISSUED ON: DECEMBER 17, 2013
IMPLEMENTED ON: APRIL 09, 2014
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3
Introduction ... 5
1 Scope ... 8
2 Normative references ... 9
3 Terms, definitions and abbreviations ... 10
4 General considerations ... 16
5 The achievement of functional safety ... 18
6 The electromagnetic environment ... 23
7 EMC aspects of the design and integration process ... 28
8 Verification/validation of immunity against electromagnetic disturbances for
functional safety ... 32
9 EMC tests for functional safety ... 38
10 Documentation ... 46
Annex A (informative) Examples of electromagnetic disturbance levels ... 47
Annex B (informative) Measures and techniques for the achievement of functional
safety with regard to electromagnetic disturbances ... 54
Annex C (informative) Information concerning performance criteria ... 85
Annex D (informative) Considerations on the relationship between safety-related
system, ... 90
equipment and product, and their specifications ... 90
Annex E (informative) Considerations on electromagnetic phenomena and safety
integrity level ... 94
Annex F (informative) EMC safety planning ... 98
Bibliography ... 101
Foreword
GB/Z 17624 "Electromagnetic compatibility - General" currently includes the
following parts:
- Electromagnetic compatibility. General. Application and interpretation of
fundamental definitions and terms (GB/T 17624.1-1998)
- Electromagnetic compatibility - General - Methodology for the achievement of
functional safety of electrical and electronic systems including equipment with
regard to electromagnetic phenomena (GB/Z 17624.2-2013).
This Technical Specification is Part 2 of GB/Z 17642.
This Technical Specification was drafted in accordance with the rules given in GB/T
1.1-2009.
This Technical Specification uses translation method to identically adopts the
international standard IEC/TS 61000-1-2:2008 "Electromagnetic compatibility (EMC)
- Part 1-2: General - Methodology for the achievement of functional safety of electrical
and electronic systems including equipment with regard to electromagnetic
phenomena".
The Chinese documents that have consistent correspondence with the international
documents normatively cited in this Technical Specification are as follows:
- GB/T 4365-2003, Electrotechnical terminology -- Electromagnetic compatibility
(IEC 60050 (161):1990, IDT);
- GB/T 16499-2008, The Preparation of safety publication and the use of basic safety
publications and group safety publications (IEC 104 Guidance:1997, NEQ);
- GB/T 17626 (all parts), Electromagnetic compatibility -- Testing and measurement
techniques [IEC 61000-4 (all parts)];
- GB/T 17626.1-2006, Electromagnetic compatibility -- Testing and measurement
techniques -- Overview of immunity tests (IEC 61000-4-1:2000, IDT);
- GB/Z 18039.1-2000, Electromagnetic compatibility. Environment. Classification
of electromagnetic environments (IEC 61000-2-5:1996, IDT);
- GB/T 20438 (all parts), Functional safety of electrical/electronic/programmable
electronic safety-related systems [IEC 61508 (all parts)];
- GB/T 20438.1-2006, Functional safety of electrical/electronic/programmable
electronic safety-related systems -- Part 1: General requirements (IEC 61508-
1:1998, IDT);
Electromagnetic compatibility - General - Methodology for
the achievement of functional safety of electrical and
electronic systems including equipment with regard to
electromagnetic phenomena
1 Scope
This Technical Specification establishes a methodology for the achievement of
functional safety only with regard to electromagnetic phenomena of electrical and
electronic systems and installations, as installed and used under operational conditions.
This methodology includes the implication it has on equipment used in such systems
and installations.
This technical specification:
a) applies to safety-related systems incorporating
electrical/electronic/programmable electronic equipment;
b) considers the influence of the electromagnetic environment on safety-related
systems; it is intended for designers, manufacturers and installers of safety-related
systems and can be used as a guide by IEC committees;
c) is not concerned with direct hazards from electromagnetic fields on living beings
nor is it concerned with safety-related to breakdown of insulation or other
mechanisms by which persons can be exposed to electrical hazards.
It mainly covers EMC related aspects of the design phase of safety-related systems and
equipment used therein, and deals in particular with
- some basic concepts in the area of functional safety,
- the various EMC specific steps for the achievement and management of functional
safety,
- the description and assessment of the electromagnetic environment,
- the EMC aspects of the design and integration process taking into account the
process of EMC safety planning on system as well as on equipment level,
- the validation and verification processes regarding the immunity against
electromagnetic disturbances,
integrity of its constituent elements (which depends on their random failure rates).
Systematic safety integrity (which includes software safety integrity) relates to
dangerous failures that will always occur given a particular set of circumstances.
Systematic safety integrity is difficult to quantify accurately. The safety integrity level
allocated to the safety-related system (as a result of its safety integrity requirements)
will affect the degree of rigor necessary when meeting requirements for controlling or
avoiding systematic failures. Some of these requirements are explicitly graded
according to safety integrity level (see Table 4).
The failure or malfunction of a safety-related system due to an electromagnetic
disturbance with a given strength is systematic as long as the duration of the disturbance
is longer or equal to the operating cycle of the safety-related system. In this document,
it is therefore assumed that the duration of the disturbance is such, moreover the
influence of given electromagnetic disturbances on a given safety-related system is
considered the same for each occurrence. At system level, appropriate mitigation
techniques increase immunity of the safety-related functions and shall be considered as
part of the systematic capability.
Any equipment that has been developed to fully meet the requirements of the IEC 61508
series concerning systematic safety integrity for a given safety integrity level (SIL) is
said to have the corresponding systematic capability. Alternatively, the systematic
capability of equipment can be demonstrated through proven in use evidence according
to the strict requirements of IEC 61508-2.
In general, all equipment used in a safety-related system shall have a systematic
capability of at least the safety integrity level (SIL) allocated to the system.
Therefore, the suitability of equipment for safety-related systems is in general
determined by both the random hardware failure data for the equipment and by its
systematic capability.
5.4 EMC specific steps for the achievement of functional safety
To achieve functional safety the following actions with regard to electromagnetic
influences shall be undertaken:
a) consider the structure, design and intended functions of the projected or existing
safety-related system;
b) describe the relevant electromagnetic environment in which the safety-related
system is intended to be used over its lifecycle (see 6.1);
c) consider the physical and climatic environments and the degradation due to
normal use and foreseeable misuse with respect to electromagnetic aspects in
which the safety-related system is intended to be used over its lifecycle;
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.