1 Scope
This part applies to the application of electrical and electronic equipment and systems to machines not portable by hand while working, including a group of machines working together in a coordinated manner but excluding higher level systems aspects (i.e. communications between systems).
Note 1: In this standard, the term electrical includes both electrical and electronic matters (i.e. electrical equipment means both the electrical and the electronic equipment).
Note 2: In the context of this standard, the term person refers to any individual and includes those persons who are assigned and instructed by the user or his agent(s) in the use and care of the machine in question.
The equipment covered by this standard commences at the point of connection of the supply to the electrical equipment of the machine (see 5.1).
Note 3: For the requirements for the electrical supply installation in buildings, see IEC 60364.
This part is applicable to the electrical equipment or parts of the electrical equipment that operate with nominal supply voltages not exceeding 1 000V for alternating current and not exceeding 1500V for direct current, and with nominal frequencies not exceeding 200Hz. For higher voltages or frequencies, special requirements may be needed.
This part is an application standard and is not intended to limit or inhibit technological advancement. It does not cover all the requirements (e.g. guarding, interlocking, or control) that are needed or required by other standards or regulations in order to safeguard persons from hazards other than electrical hazards. Each type of machine has unique requirements to be accommodated to provide adequate safety.
This part specifically includes, but is not limited to, the electrical equipment of machines as defined in 3.33 (annex A lists examples of machines whose electrical equipment may be covered by this standard).
Additional and special requirements can apply to the electrical equipment of machines that:
—are used in open air (i.e. outside buildings or other protective structures);
—use, process, or produce potentially explosive material (e.g. paint or sawdust);
—are used in potentially explosive and/or flammable atmospheres;
—have special risks when producing or using certain materials;
—are used in mines;
—are sewing machines, units, and systems (which are covered by IEC 60204-31);
—are hoisting machines (which are covered by IEC 60204-32).
Power circuits where electrical energy is directly used as a working tool are excluded from this part.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB 5226. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part 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 755-2000 Rotating electrical machines—Rating and performance (idt IEC 60034-1:1996)
GB/T 2900.18-1992 Electrotechnical terminology—Low voltage apparatus (eqv IEC 60050(441):1984)
GB/T 3859.1-1993 Semiconductor convertors—Specification of basic requirements (eqv IEC 60146-1-1:1991)
GB/T 4026-1992 Identification of electric equipment terminals and of terminations of certain designated conductors, including general rules for an alphanumeric system (idt IEC 60445:1988)
GB 4208-1993 Degrees of protection provided by enclosure (IP code) (eqv IEC 60529:1989)
GB/T 4728 Graphical symbols for electrical diagrams (GB/T 4728.1-1985, GB/T 4728.2~4728.3-1998, GB/T 4728.4~1999, GB/T 4728.5~4728.8-2000, GB/T 4728.9~4728.10-1999, GB/T 4728.11-2000, GB/T 4728.12f~4728.13-1996, idt IEC 60617-1~60617-13:1996)
GB/T 4772.1-1999 Dimensions and output series for rotating electrical machines—Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080 (idt IEC 60072-1:1991)
GB/T 4772.2-1999 Dimensions and output series for rotating electrical machines—Part 2: Frame numbers 355 to 1 000 and flange numbers 1180 to 2360 (idt IEC 60072-2:1990)
GB/T 4942.1-2001 Classification of degrees of protection provided by enclosures of rotating electrical machines (IP code) (idt IEC 60034-5:1991)
GB/T 5465.2-1996 Graphical symbols for use on electrical equipment (idt IEC 60417:1994)
GB/T 6988 Preparation of documents used in electrotechnology (GB/T 6988.1-1997, idt IEC 61082-1:1991; GB/T 6988.2-1997, idt IEC 61082-2:1993; GB/T 6988.3-1997, idt IEC 61082-3:1993)
GB 7251.1-1997 Low-voltage switchgear and controlgear assemblies—Part 1: Type-tested and partially type-tested assemblies (idt IEC 60439-1:1992)
GB 7947-1997 Identification of conductors by colours or numerals (idt IEC 60446:1989)
GB/T 13002-1991 Built-in thermal protection for rotating electrical machines—Rules for protection of rotating electrical machines (eqv IEC 60034-11:1978)
GB 13028-1991 Isolating transformers and safety isolating transformers-Requirements (eqv IEC 60742:1983)
GB 14048.3-1993 Low-voltage switchgear and controlgear—Low-voltage switches, disconnectors, switch disconnectors and fuse-combination units (eqv IEC 60947-3:1990)
GB 14048.5-1993 General rules for low-voltage switchgear and control-gear control circuit devices and switching elements section one. Electromechanical control circuit device (eqv IEC 60947-5-1:1990)
Foreword i
IEC foreword iii
Introduction v
1 Scope
2 Normative references
3 Definitions
4 General requirements
5 Incoming supply conductor terminations and devices for disconnecting and switching off
6 Protection against electric shock
7 Protection of equipment
8 Equipotential bonding
9 Control circuits and control functions
10 Operator interface and machine-mounted control devices
11 Electronic equipment
12 Controlgear: location, mounting, and enclosures
13 Conductors and cables
14 Wiring practices
15 Electric motors and associated equipment
16 Accessories and lighting
17 Marking, warning signs and reference designations
18 Technical documentation
19 Testing and verification
Annex A (Informative) Examples of machines covered by this part
Annex B (informative) Inquiry form for the electrical equipment of machines
Annex C (informative) Current-carrying capacity and overcurrent protection of conductors and cables in the electrical equipment of machines
Annex D (informative) Explanation of emergency operation functions
Annex E (informative) Bibliography
Annex F (informative) Guide for the use of this part
Index
