GB 5226.1-2002 Safety of machinery - Electrical equipment of machinery - Part 1: General technical requirements
Some standard content:
ICS29.020
National Standard of the People's Republic of China
GB5226.1-2002/IEC60204-1:2000 replaces GB/T5226.1-—1996
Safety of machinery
Electrical equipment of machinery
Part 1: General technical requirements
Safety of machinery--Electrical equipment of machinesPart 1: General requirements(IEC 60204-1:2000,IDT)
Published on October 8, 2002
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implemented on October 1, 2003
GB 5226. 1—2002/1EC 60204-1:2000 Foreword
Chapter 1, Chapter 2, Chapter 3, Article 4.4.2, Article 12.2.1, Article 12.5, and Chapter 18 (excluding Article 18.2) of this part are recommended, and the rest are mandatory.
GB5226 "Safety of machinery - Electrical equipment of machinery" is divided into the following parts: Part 1: General technical conditions
Part 11: General technical conditions for AC voltage higher than 1000V or DC voltage higher than 1500V but not exceeding 36kV - Part 31: Particular requirements for sewing machines, units and systems Part 32: General technical conditions for lifting machinery This part is the first part of GB5226, corresponding to IFC60204-1:2000 "Safety of machinery - Electrical equipment of machinery - Part 1:
General technical conditions" (Edition 4.1), and the consistency of this part is equivalent to that of IEC60204-1. This part replaces GB/T5226.1-1996 "Industrial machinery electrical equipment Part 1: General technical conditions". The main differences between this part and GB/T5226.1-1996 in terms of technical content are as follows: the attribute of the standard is changed from recommendation to mandatory provisions. - The name of the standard is changed to "Safety of machinery electrical equipment of machinery Part 1: General technical conditions"; - The scope of application of the standard is expanded to mechanical electrical equipment rather than limited to industrial machinery electrical equipment; regulations are made for on-board power supplies;
requirements for preventing the occurrence of dangerous touch potentials; protection against surge overvoltages is required;
requirements for wireless control are specified;
the meaning and application of emergency operation functions are specified; requirements for cables are added, including cable classification, mechanical properties, current carrying capacity and installation; the chapter on control interface (Chapter 11 of GB/T5226.1-1996 edition) is deleted; Appendix F, the user guide of this part, is added.
From the date of implementation of this part, it will replace GB/T5226.1-1996. Appendices A, B, C, D, E and F of this part are informative appendices. This part is proposed by China Machinery Industry Federation. This part is under the jurisdiction of the National Technical Committee for Standardization of Industrial Machinery Electrical Systems (CSBTS/TC231). The drafting units of this part are: Beijing Machine Tool Research Institute, China Jiuchuan Electric Co., Ltd. and Changsha Construction Machinery Research Institute of the Ministry of Construction. The main drafters of this part are: Sun Juan, Huang Lin, Huang Zuguang. Previous versions of the standards replaced by this part are: JB 2738-1980. GB 5226 --1985. GB/T 5226. 1--1996. 208
IEC Foreword
GB 5226. 1-2002/IEC 60204-1: 2000IEC (International Electrotechnical Commission) is a world standardization organization composed of national electrotechnical committees (IEC National Committees). 1)
IEC's purpose is to promote cooperation on all issues related to standardization in the electrical and electronic fields. For this purpose and other activities, IEC publishes international standards. The formulation of standards is entrusted to technical committees, and any IEC National Committee interested in the subject may participate in its formulation. National governments and non-governmental organizations that have relations with IEC may also participate in the formulation of standards. IEC and the International Organization for Standardization (ISO) cooperate closely under the terms agreed upon by the two organizations. IEC decisions or agreements on technical matters are made by technical committees represented by all national committees particularly concerned with these matters, and express as far as possible an international consensus on the issues covered. Documents are published as recommendations for international use in the form of standards, technical specifications, technical reports or specifications, and are accepted by the national committees in this sense. In order to promote international unification, IEC National Committees have the responsibility to apply IEC International Standards to their national and regional standards to the greatest extent possible. Any differences between IEC standards and their corresponding national or regional standards should be clearly indicated in the national or regional standards. IEC does not provide a marking method to indicate approval and is not responsible for any equipment claiming to conform to IEC standards. 5)
It should be noted that some elements of this part may be subject to patent rights. IEC will not be responsible for identifying any or all such patent rights. This part was prepared by IEC/TC44: Machinery Safety - Electrotechnical Technical Committee. The 4th edition of IEC 60204-1 replaces the 3rd edition published in 1992. The 4th edition incorporates the information of the 3rd edition and the amendments to the general technical conditions for machinery. Machinery also includes mobile machinery and complex (e.g. large) mechanical devices. The consolidated version of IEC 60204-1 is based on the 4th edition published in 1997 [Documents 44/205/FDIS and 44/211/RVDI, the Corrigendum of March 1998 and Amendment No. 1 of 1999 [Documents 44/247/FDIS and 44/256/RVDJ. The version number of this part is 4.1.
A vertical line in the margin indicates that the basic publication has been modified by Amendment No. 1. Appendices A, B, C, D, E and F are informative. This part has incorporated the contents of the Corrigendum of March 1998. The following differences exist in some countries:
-4.3.1: The voltage characteristics of the supply from the public distribution system are specified by EN50160:1994 "Voltage characteristics of the supply from the public distribution system" (Europe).
-7.2.3: The neutral conductor of the TN-S system is disconnected by force (France). -10.7.2: The use of a non-latching emergency stop device in conjunction with a separate reset device is considered an acceptable common practice (USA). -13.6 Table 6: The cross-section of copper conductors is specified according to the American Wire Gauge (AWG) (USA). -14.2.2: The color identification of the protective conductor, green (with or without yellow stripe) is equivalent to the yellow/continuous two-color combination (USA and Canada).
-14.2.3: The grounded neutral conductor is marked with white or natural gray instead of light blue (USA and Canada). -14.2.4: The use of yellow instead of orange (USA). 1) Amendment No. 1 adds Appendix F. In the table of contents and introduction, the English version draws a vertical line between the right margin of "Appendix F\" and the right margin of "Full text of Appendix F" to indicate the difference between Version 4.0 and Version 4.1.
GB5226.1--2002/IEC60204-1:2000 Introduction
This part proposes technical requirements and recommendations for mechanical electrical equipment to promote the improvement of: - Safety of personnel and property,
Consistency of control response;
Convenience of maintenance.
It is not advisable to sacrifice the above basic elements to obtain high performance. For example, a group of machines is used for the production of scattered parts. The failure of such mass-produced machinery, manufacturing systems or manufacturing units will cause serious economic losses.
Figure 1 Figure 1 and Figure 2 help to understand the relationship between the various links of a machine and its related equipment. Figure 1 shows the overall block diagram of a typical manufacturing system (a group of machines working together in a collaborative manner), and Figure 2 is a block diagram of a typical machine and related equipment, which shows the various links of the electrical equipment involved in this part. It can be seen from Figures 1 and 2 that all links including safety protection devices, cutting/clamping, software and documents together constitute the machine, and more than one machine works together through at least one level of monitoring to form a manufacturing system or manufacturing unit. The guide to the use of this part is shown in Appendix F.
Actual environment of equipment
[System/unit safety equipment
Electrical equipment (see 2)
Processing equipment
Original science and tools
Actual environment (4.4)
See 1EC60364
(External protection conductor connection)
Conductors and cables (13)
Wiring technology (14)
Testing (19)
■High-level controller
Information transmission
Local network/data transmission
Operation station
Electrical equipment (see enclosure 2)
Processing equipment
Material transportation
Block diagram of a typical manufacturing system
Warning signs, project code (17)
Technical documents (18)
Power cut-off switch (5.3)
Electric shock protection (6)
Equipment protection (7)
Earth (PE) terminal (5.2)
Protective earth circuit (8. 2)
Control circuits and functions (9)
Emergency stop function (9.2.5, 4)
Control devices (12)
Accessories and lighting (16)
Programmable logic controller
Motor control equipment
Motor (15)
And transducer
Input/output interface
Actuator and sensor
Processing equipment
Block diagram of typical machinery
System/unit
Control data
Data transmission
Master stop device (10.7)
Operation station (10)
Safety protection devices and
Warnings
1 Scope
GB5226.1--2002/IEC 60204-1:2000 Safety of machinery Electrical equipment of machinery
Part 1: General technical requirements
This standard applies to electrical and electronic equipment and systems of machinery (including a group of machinery working together), but does not apply to electrical and electronic equipment and systems of portable working machinery and advanced systems (such as communication between systems). Note 1: The word "electrical" in this standard includes both electrical and electronic aspects (such as electrical equipment refers to electrical equipment and electronic equipment). Note 2: For the purpose of this standard, the word "person" refers to any individual, including those assigned by the user or his agent to use and manage the above-mentioned machinery. The equipment discussed in this standard starts from the power supply entry of the electrical equipment of the machine (see 5.1). Note 3: The requirements for electrical installations in buildings are given in IEC60364. This standard applies to electrical equipment or parts of electrical equipment with a rated voltage not exceeding 1000Va.c or 1500Vd.c. and a rated frequency not exceeding 200Hz. For higher voltages or frequencies, special requirements must be met. This standard is a general standard and does not restrict or hinder technical progress. It does not include all technical requirements (such as protection, interlocking or control) that are required by other standards or regulations to protect people from non-electrical injuries. Special requirements may be made for safety of various types of machinery with special requirements.
This standard specifically applies to (but is not limited to) the electrical equipment of machinery defined in 3.33 (the electrical equipment of the machinery listed in Appendix A is within the scope of this standard).
Special technical requirements may be added to the electrical equipment of the following machinery: - open-air machinery (i.e. outside buildings or other protective structures); - machinery that uses, processes or produces explosive materials (such as paint or sawdust); - machinery used in explosive and flammable environments; - machinery that increases special hazards when processing or using certain materials; - mining machinery;
sewing machinery, devices and systems (including those in IEC60204-31); - lifting machinery (including those in IEC60204-32). Power circuits that directly use electrical energy as a processing means are not within the scope of this standard. 2 Normative references
The clauses in the following documents become clauses of this part through reference in this part of GB 5226. For all dated references, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, parties to agreements based on this part are encouraged to study whether the latest versions of these documents can be used. For all undated references, the latest versions apply to this part. GB755-2000 Ratings and performance of rotating electrical machines (idtIEC60034-1: 1996) GB/T2900.18—1992 Electrical terminology: low voltage electrical appliances (eqv1EC60050(441): 1984) GB/T3859.1-1993 Provisions for basic requirements for semiconductor converters (egvIEC60146-1-1: 1991) GB/T4026-1992 General rules for the identification and application of alphanumeric systems for terminals and specific wire ends of electrical equipment (idtIEC60445: 1988)
GB4208----1993 Enclosure protection degree (IP code) eqvIEC60529: 1989) GB/T 4728
Graphical symbols for electrical diagrams (GB/T4728.1-1985, GB/T4728.2~4728.3-1998, 211
GB 5226.1—2002/1EC 60204-1:2000GB/T 4728.4~1999, GB/T 4728.5~4728.8--2000.GB/T 4728.9~~4728.10 ~1999, GB/T 4728.112000, GB/T 4728.12~4728.13---1996, idt IEC 60617-1~60617-13:1996) GB/T4772.1-1999 Rotating electrical machines - Dimensions and output power classes - Part 1: Frame size 56-400 and flange size 551080 (idt IEC 60072-1:1991)
GB/T4772.2—1999 Rotating electrical machines - Dimensions and output power classes - Part 2: Frame size 355-1000 and flange size 1180-2360 (idt IEC 60072-2:1990) GB/T4942.1—2001 Degrees of protection of rotating electrical machine enclosures (IP code) (idtIEC60034-5:1991) GB/T5465.2--1996 Graphical symbols for electrical equipment (idtIEC60417:1994) GB/T6988 Preparation of electrical technical documents (GB/T6988.1—1997, idtIEC61082-1:1991; GB/T 6988.2--1997, idt IEC 61082-2:1993; GB/T 6988.3-1997, idt IEC 61082-3:1993) GB7251.1-1997 Low-voltage switchgear and controlgear Part: Type test and part of type test complete equipment (idt IEC 60439-1:1992)
GB79471997 Color or numerical identification of conductors (idtIEC60446:1989)GB/T13002-1991 Thermal protection of rotating machines - Protection rules for rotating machines (eqvIEC60034-11:1978)GB13028--1991 Technical requirements for isolating transformers and safety isolating transformers (egvIEC60742:1983)GB14048.3--1993 Low-voltage switchgear and controlgear - Low-voltage switches, isolators, disconnectors and fuse combination devices (eqvIFC 60947-3:1990)
GB14048.5-1993 Low-voltage switchgear and controlgear - Part 5-1 Control circuit devices and switching elements - Electromechanical control circuit devices (eqvIEC60947-5-1:1990)GB 14048. 7—1998
IEC 60947-7-1:1989)
Low-voltage switchgear and controlgear auxiliary equipment Part 1 Copper conductor terminal blocks (eqvGB14821.1—1993
Protection against electric shock of electrical installations in buildings (eqvIEC60364-4-41:1992) GB/T15706.1--1995 Basic concepts and general principles for mechanical safety Part 1: Basic terms and methodology (eqvISO/TR 12100-1:1992)
GB/T15969.1-1995 Programmable controller Part 1: General requirements (eqvIEC61131-1:1992) GB/T15969.2-1995 Programmable controller Part 2: Equipment technical requirements and tests (eqvIEC61131-2:1992)
GB16895.3-1997 Electrical installations of buildings Part 5: Selection and installation of electrical equipment Chapter 54: Grounding arrangements and protective conductors (idtIEC60364-5-54: 1980) GB/T16935.1-1997 Insulation coordination of equipment in low-voltage systems Part - Principles, requirements and tests (idtIEC60664-1: 1992)
GB/T18380.1-2001E
Cable combustion test under flame conditions Part 1 : Single insulated wire or cable vertical flame test method (idtIEC60332-1: 1993) ISO3864: 1984 Safety colors and safety signs ISO7000: 1989 List of graphic symbols used in equipment 1EC60050 (191): 1990 International Electrotechnical Vocabulary (IEV) - Chapter 191: Reliability and maintainability IEC60050 (826): 1982 International Electrotechnical Vocabulary (IEV) - Chapter 826: Electrical installations in buildings IE C60073:1996 General safety principles for human-machine interfaces, marking and identification - Principles for marking indicators and actuators IEC60076-5:1976 Power transformers Part 5: Capacity to withstand short circuits IEC60204-31:1996 Electrical equipment of machinery Part 31: Particular requirements for sewing machines, units and systems IEC60309-1:1988 Industrial plugs, sockets and couplers Part 1: General requirements 1EC60364-4-46:1981 Buildings Electrical installations Part 4: Safety protection Chapter 46: Isolation and switching IEC60364-4-47:1981
Electrical installations of buildings Part 4: Safety protection Chapter 47: Application of safety protection measures 212
Section 470: General Section 471: Electric shock protection measures GB5226.1--2002/IEC60204-1:2000?Electrical installations of buildings Part 4: Safety protection Chapter 47: Application of safety protection measures - IEC 60364-4-473:1977
Section 473: Overcurrent protection measures
IEC60364-4-481:1993 Electrical installations of buildings Part 4: Safety protection - Chapter 481: Choice of protective measures when functions are affected by external influences - Section 481: Choice of protection measures for electric shock related to external influencesIEC60364-5-523:1983 Electrical installations of buildings Part 5: Selection and installation of electrical equipment - Chapter 52: Wiring systems - Section 523: Current carrying capacity
Electrical installations of buildings Part 6: Inspection - Chapter 61: Initial inspection according to Amendment No. 1 (1993)IEC 60364-6-61:1986
Corrected 60536:1976
Human-machine interface (MMI) -
Operation principles
Classification of protection against electric shock of electrotechnical and electronic equipment
IEC60621-3:1979 Outdoor electrical equipment for severe conditions (including open-pit iron ore mines and quarries) - Part 3: General requirements for equipment and auxiliary equipment
IEC 60947-2:1995
Low-voltage switchgear and controlgear - Part 2: Circuit breakers Industrial systems, installations, equipment and industrial products - Construction principles and standard representation - Part 1: BasicIEC 61346-1:1996
3 Definitions
This part adopts the following definitions:
Actuator
A component that applies external operating force to the operating system. [3.3.48 of GB/T 2900.18—1992] Note 1: handle, knob, button, roller, push rod operator, etc. Note 2: Some operating modes require only action without external force. Note 3: See 3.32.
ambient temperatureambient temperature
The temperature of air or other medium where electrical equipment is applied. [IEV 826-01-04]
barrier
Parts that prevent direct contact from all normal passage directions. [IEV 826-03-13]
cable tray
A cable support with a continuous strip bottom that is slightly folded upwards but without a cover. Note: The cable tray may be perforated or non-perforated. [IEV 826-06-07]
cable trunking system cable trunking system is a closed enclosure consisting of a base and a removable cover, which is a conduit containing insulated wires, cables, cords and other electrical equipment. [IEV 826-06-04]
GB 5226. 1—2002/IEC 60204-1:20003.6
Joint initiation
concurrent
acts in a combined form. Used in the following situations: under operating conditions, there are two or more control actions at the same time (but not necessarily at the same time).
conduit
a tubular component used for wiring, insulated wires and cables pass through it and can be replaced. Note: The conduit should be tightly connected so that the insulated wires and/or cables can only pass through the tube and are not allowed to pass through the outside. [IEV826-06-03]3.8
control circuit (of a machine) (Mechanical) Control circuit
Circuit used to control machinery and power protection circuit. 3.9
Control device control device
Device connected in the control circuit to control the operation of the machine (such as position sensor, manual switch, relay, solenoid valve, etc.). 3.10
Control gear control gear
Control gear is a general term, including the combination of switching electrical appliances and related control, measurement, protection and regulation equipment, and also includes the combination of these devices and equipment with related internal connections, auxiliary devices, housings and supporting structures, generally used for the control of equipment that consumes electrical energy. [GB/T 2900.18-1992 3.1.6]3. 11
Controlled stop controlledstopwww.bzxz.net
Once the control has recognized the stop signal, the command signal is converted to zero to stop the mechanical movement, but the power of the mechanical actuator is maintained during the stop process.
Digital
Works with discrete signals to represent data of digits or other characters. 3.13
Direct contact
Contact between humans or animals and live parts.
［IEV826-03-05]
Duct
Enclosed conduit used to place and protect wires, cables and busbars. Note: Channel types include conduit (3.7), cable duct installation (3.5) and underground cable duct. 3.15
Electrical operating areaCompartment or location used for electrical equipment, which is only accessible to skilled or trained personnel without keys or tools to open the door or remove the fence, and the electrical operating area is marked with clear warning signs. 3.16
Electronic equipmentElectronic equipment components whose circuits are mainly composed of electronic devices and components. 3.17
enclosed electrical operating area
GB 5226. 1--2002/IEC 60204-1:2000 A compartment or location for electrical equipment that is only accessible to skilled or trained personnel who can open the door with a key or tool or remove the barrier. The electrical working area is marked with clear warning signs. 3.18
enclosure
Equipment protection components provided to protect against certain external influences and prevent direct contact from any direction. [IEV826-03-12]
Note: The definition taken from the current IEV needs to be interpreted as follows within the scope of this part (see 3.1 in GB4208). 1) The enclosure provides protection for people or animals from accessing dangerous parts; 2) Fences, hole-type passages or any other devices used to prevent or limit the entry of special test probes, whether attached to the enclosure or composed of closed equipment, can be regarded as part of the enclosure unless they can be removed without a key or tool. - Cabinets or boxes installed on or independent of the machine; - Walls formed by enclosed spaces on the machine structure. 3.19
Equipmentequipment is a general term, including materials, devices, components, tools, fixtures, instruments and parts related to or used in electrical devices.
equipotential bonding
Equipotential bonding
Electrically bonding each exposed conductive part and the external conductive part to achieve substantially equal potential. [IEV 826-04-09]
Exposed conductive part
exposed conductive part
Conductive part of electrical equipment that is easily accessible, not normally energized, but may be energized in the event of a fault. Note: Conductive parts in electrical equipment that can only be energized through exposed conductive parts in the event of a fault are not considered to be exposed conductive parts. EIEV 826-03-02]
Extraneous conductive partConductive part that is not part of the electrical device and is easily led to potential (usually ground potential). [IEV 826-03-03]
failure
The termination of a specified capability.
Note 1: After a failure, the functional item is faulty. Note 2: "Failure" is an event, as distinct from "fault" which is a state. Note 3: This concept, as a definition, does not apply to functional items consisting only of software. [IEC60050(191):1990 191-04-01] Note 4: In practice, the terms fault and failure are often used in apposition. 3.24
fault
A characteristic state in which a specified function cannot be performed. It does not include the inability to perform a specified function during preventive maintenance and other planned actions, nor the inability to perform a specified function due to lack of external resources. Note 1: A fault is often the result of a failure of the functional item itself, but may have existed before the failure. Note 2: The term "fault" and its definition used in English are similar to those given in IEC 60050 (191): 1990, 191-05-01. In the field of organizations, the French term "defaut" and the German term "Fehler" are used instead of the terms "Panne" and "Fehlzustand". 3.25
Protective device
GB 5226. 1--2002/IEC 60204-1:2000 Part of a machine specially designed to provide protection by means of physical obstacles. According to the structure, it can be called a shell, cover, screen, door, closed protective device, etc. EGB/T 15706. 1-1995 3.22] 3.26
Hazard
Origin of possible damage or injury to health. [3.5 in GB/T 15706.1-1995]
Indirect contact
Contact between a person or animal and an exposed conductive part that becomes live in the event of a fault. [IFV 826-03-06]
(Electrical) Trained person (electrically) Instructed person A person who is instructed and trained by a skilled electrical person to detect risks and avoid electrical hazards. [IEV 826-09-02]
interlock (for safeguarding) Interlock
A circuit that interconnects a protective device or component with a control system and/or distributes all or part of the electrical energy to the machinery. 3.30
Limiting device
Prevents machinery or mechanical elements from exceeding design limits (such as space limits or pressure limits). [3.23.7 in GB/T15706,1-1995]
live part
a conductor or conductor that is live during normal operation, including a neutral conductor N, but excluding a PEN conductor as specified. Note: This term does not necessarily imply a risk of electric shock. [3.32 in IEV826-03-01]
machine actuator-a power mechanism used to cause mechanical movement. 3.33
machinery (machine) machinery (machine) is composed of a number of parts and components, at least one of which is movable and has appropriate mechanical operating actuators, control and power circuits, etc. Their combination has a certain application purpose, such as material processing, handling, handling or packaging, etc. The term machinery also includes a combination of machines, that is, several machines for the same application purpose are arranged and controlled to perform their functions as a complete machine.
Machinery also refers to replaceable devices that can change the function of the machinery. These devices are placed on the market (supplied) with the intention that the operator can assemble it with a machine or some different machines or with traction equipment by himself. Such devices are not spare parts or tools. 3.34
Narking
Symbols or nameplates used by component manufacturers to distinguish the types of components. 3.35
Neutral conductor (symbol N) Neutral conductor (symbol N) A conductor connected to the neutral point of the system and capable of transmitting electrical energy. LIEV 826-01-03]
Obstacle
GB5226.1—2002/IEC60204-1:2000 A component used to prevent unintentional direct contact, but not intentional direct contact [IEV 826-03-14]
Overcurrent
Various currents exceeding the rated value. For conductors the rated value refers to the current carrying capacity. [IFV 826-05-06]
overload (of a circuit)
Overload is the relationship between time and current in a circuit when the circuit exceeds the full load value in the absence of faults. Note: Overload should not be used as a synonym for overcurrent. 3.39
Plug/socket combination plug/socket combination power plugs and sockets, cable couplers or appliance couplers shall comply with the provisions of IEC60309-1:1988. 3.40
positive opening operation (of a contact element) specified movement of the switch actuator to open the contacts by means of non-elastic parts (i.e. without the use of springs). [3.1.2 in GB14048.5-1993]
Power circuit
A circuit that supplies power from the power grid to electrical equipment units and control circuit transformers for productive operation. 3.42
Protective bonding circuitA complete system of protective wires and conductors that participate in protecting against the adverse consequences of grounding faults. 3.43
Protective conductorprotectiveconductor
A type of wire required for measures to prevent electric shock, used for electrical connection between the following parts: an exposed conductive part;
an external conductive part;
-the main grounding terminal.
[IFV 826-04-05]
Redundancy
Multiple devices or systems used to ensure that when one circuit fails, another circuit can effectively perform the required function. 3.45
reference designation A distinguishable code used to identify items in diagrams, tables, diagrams and equipment. 3.46
The combination of the probability and degree of possible damage or harm to health in a dangerous state. [3,7 in GB/T15706.1]
GB 5226.12002/IEC 60204-1:20003. 47
safe working procedure A working method to reduce risk.
safeguard
A protective device or protective component used in a safety function to protect people from existing or imminent hazards3.49
Safeguarding
Safety measures consisting of special safety devices that protect people when the danger cannot be reasonably eliminated or adequately limited by design.
Servicing level
The surface on which maintenance personnel usually stand when operating or servicing electrical equipment. 3.51
Short-circuit current short-circuit current Overcurrent caused by a short circuit due to a fault in the circuit or a connection error. [GB/T 2900.18—6.1.26]
(Electrically) skilled person
(Electrically) skilled person Personnel who have technical knowledge or sufficient experience to detect risks and avoid electrical hazards. [IEV826-09-01]
5supplier
An entity (such as a manufacturer, contractor, installer, assembler) that provides electrical equipment or auxiliary equipment related to machinery. Note: The user himself can also be the supplier.
Switching device
An electrical device used to connect or disconnect the current of one or several circuits. [3.1.7 in GB/T 2900.18-1992] Note: A switching device can perform one or two such actions. 3.55
Terminal
A conductor that provides electrical connection between the device and the external circuit. 3.56
Uncontrolled stop
Uncontrolled stop
Stop the movement of the machine by cutting off the power of the mechanical actuator, all brakes or other activated mechanical stopping devices. 3.57
User
The entity that uses the machine and its related electrical equipment. 4 Basic requirements
General principles
This standard applies to electrical equipment of various machines and groups of machines working together. 218
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