Guidelines on safety designs for electric equipment
1 Scope
This standard specifies the basic criteria for the safety designs for electric equipment with a voltage less than 1,000 V in the case of AC or 1,500 V in the case of DC.
This standard is applicable to the safety designs for electric equipment.
Professional or product safety design shall be based on relevant standards. If there is no professional or product safety design method, it may be based on this standard.
Notes:
1 Electric equipment including products related to power transmission, distribution, storage, measurement, supervision, control, regulation, conversion and consumption, as well as electric installations, electric devices and electric appliances in the information technology field which is assembled with the aforesaid ones.
2 Even if the designer has completed the design for electric equipment according to those specified in this standard, it does not mean that the electric equipment meets the safety requirements. Electric equipment may only be considered safe after passing the specified inspection or test and passing the qualification assessment.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB 4208 Degrees of protection provided by enclosure (IP code) (GB 4208-2008; IEC 60529: 2001, IDT)
GB/T 4776 Electrical safety terminology
GB/T 5465.2-2008 Graphical symbols for use on electrical equipment - Part 2: Graphical symbols (IEC 60417 DB: 2007, IDT)
GB/T 22696 (all parts) Electrical equipment safety - Risk assessment and risk reduction
3 Terms and definitions
For the purposes of this standard, the terms and definitions given in GB/T 4776 apply.
4 Electric safety design principles
4.1 General
4.1.1 For the national laws and regulations, including mandatory standards, on electric safety, their content and the identified conformance standards are the basis for the safety designs for electric equipment, and the conformance standards will be continuously updated with the development of technology.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Electric safety design principles
4.1 General
4.2 Basic criteria
4.3 Basic elements of electric safety design
5 Requirements for electric safety design
5.1 Requirements for environmental adaptation design
5.2 Design requirements for protection against electric shock hazards
5.3 Design requirements for protection against hazards caused by indirect effect of electric energy and external factors
5.4 Design requirements for protection against mechanical hazards
5.5 Design requirements for electric and mechanical connections
5.6 Design requirements for protection against operational hazards
5.7 Design requirements for electric energy control and hazard prevention
5.8 Design requirements for marking and instructions
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