GB/T 5226.1-2019Electrical safety of machinery -- Electrical equipment of machines -- Part 1: General requirements (English PDF)

Foreword

GB/T 5226 Electrical Safety of Machinery - Electrical Equipment of Machines is divided

into the following parts.

---Part 1.General Requirements;

---Part 6.Requirements for Construction Machinery;

---Part 7.Requirements of Industrial Robot;

---Part 11.Requirements for HV Equipment for Voltages above 1,000 V a.c. or

1,500 V d.c. and not Exceeding 36 kV;

---Part 31.Particular Safety and EMC Requirements for Sewing Machines, Units

and Systems;

---Part 32.Requirements for Hoisting Machines;

---Part 33.Requirements for Semiconductor Fabrication Equipment

---Part 34.Requirements for Machine Tools.

This Part is Part 1 of GB/T 5226.

This Part was drafted in accordance with the rules in GB/T 1.1-2009.

This Part serves as a replacement of GB 5226.1-2008 Electrical Safety of Machinery -

Electrical Equipment of Machines - Part 1.General Requirements. In comparison with

GB 5226.1-2008, the main technical changes are as follows.

---Related factors that need to be reduced for equipment used at high altitudes are

added (see 4.4.5);

---When the power supply disconnecting device is a plug / socket combination,

relevant requirements are put forward (see 5.3.3);

---New requirements are put forward for the operating device of the power supply

disconnecting device (see 5.3.4);

---Automatic disconnection of supply is used as protection to put forward specific

requirements for power systems with different grounding forms (see 6.3.3);

---The requirements for determining short-circuit current rating of electrical

equipment are put forward (see 7.10);

---More provisions are made for protective bonding circuit (see 8.2);

---Many control functions are added, for example, the capability of monitoring

wireless control system in machinery control (see 9.2);

---The protection of control circuit faults has been specified in more detail (see

9.4.3);

---Brand-new provisions are made for technical documentation (see Chapter 17);

---New requirements are made for the installation method of wires and cables (see

Annex D);

---Annex H is added; measures of reducing electromagnetic effects are specifically

discussed (see Annex H);

---Annex I is added to provide users with relevant information (see Annex I).

This Part adopts the Translation Method in the equivalent adoption of IEC 60204-

1 Scope

This Part of GB/T 5226 applies to electrical, electronic and programmable electronic

equipment and systems to machines not portable by hand while working, including a

group of machines working together in a coordinated manner.

2 Normative References

The following documents are indispensable to the application of this document. In

terms of references with a specified date, only versions with a specified date are

applicable to this document. In terms of references without a specified date, the latest

version (including all the modifications) is applicable to this document.

GB/T 16754-2008 Safety of Machinery - Emergency Stop - Principles for Design (ISO

13850.2006, IDT)

GB/T 16895.3-2017 Low-voltage Electrical Installations - Part 5-54.Selection and

Erection of Electrical Equipment - Earthing Arrangements and Protective Conductors

(IEC 60364-5-54.2011, IDT)

GB/T 16895.5-2012 Low-voltage Electrical Installations - Part 4-43.Protection for

Safety - Protection against Overcurrent (IEC 60364-4-43.2008, IDT)

GB/T 16895.6-2014 Low-voltage Electrical Installations - Part 5-52.Selection and

Erection of Electrical Equipment - Wiring Systems (IEC 60364-5-52.2009, IDT)

GB/T 16895.21-2011 Low-voltage Electrical Installations - Part 4-41.Protection for

Safety - Protection against Electric Shock (IEC 60364-4-41.2005, IDT)

GB/T 16895.22-2004 Electrical Installations of Buildings - Part 5-53.Selection and

Erection of Electrical Equipment - Isolation, Switching and Control - Section 534.

Devices for Protection against over-voltages (IEC 60364-5-53.2001, IDT)

GB/T 16895.23-2012 Low-voltage Electrical Installations - Part 6.Verification (IEC

60364-6.2006, IDT)

3 Terms, Definitions and Abbreviated Terms

4 General requirements

This standard specifies requirements for the electrical equipment of machines.

The risks associated with the hazards relevant to the electrical equipment shall be

assessed as part of the overall requirements for risk assessment of the machine.

5 Incoming Supply Conductor Terminations and Devices for Disconnecting and Switching off

It is recommended that, where practicable, the electrical equipment of a machine is

connected to a single incoming supply. Where another supply is necessary for certain

parts of the equipment, that supply should be derived, as far as is practicable,

from devices forming part of the electrical equipment of the machine.

6 Protection against Electric Shock

Live parts shall be located inside enclosures that provide protection against contact

with live parts of at least IP2X or IPXXB.

7 Protection of Equipment

Overcurrent protection shall be provided where the current in any circuit can exceed

either the rating of any component or the current carrying capacity of the conductors,

whichever is the lesser value.

8 Equipotential Bonding

Where a part is removed for any reason, the protective bonding circuit for the remaining parts shall not be interrupted.

9 Control Circuits and Control Functions

Where control circuits are supplied from an AC source, transformers having separate windings shall be used to separate the power supply from the control supply.

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