GB 5226.3-2005 PDF English
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Safety of machinery -- Electrical equipment of machines -- Part 11: Requirements for HV equipment for voltages above 1 000 V a.c. or 1500Vd.c. and not exceeding 36kV
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GB 5226.3-2005: Safety of machinery -- Electrical equipment of machines -- Part 11: Requirements for HV equipment for voltages above 1 000 V a.c. or 1500Vd.c. and not exceeding 36kV
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB5226.3-2005
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.020
J 09
GB 5226.3-2005 / IEC 60204-11.2000
Safety of Machinery - Electrical Equipment of Machines -
Part 11.Requirements for HV Equipment for Voltages
above 1,000 Va.c. or 1,500 Vd.c. and Not Exceeding 36 kV
(IEC 60204-11.2000, IDT)
Issued on. SEPTEMBER 9, 2005
Implemented on. SEPTEMBER 1, 2006
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... 4
1 Scope... 6
2 Normative References... 7
3 Definitions... 9
4 General Requirements... 16
5 Incoming Supply Conductor Terminations, Devices for Disconnecting and Switching
off, and Means for Earthing... 18
6 Protection against Electric Shock... 22
7 Protection of HV Equipment... 25
8 Equipotential Bonding... 28
9 Control Circuits and Control Functions... 33
10 Operator Interface and Machine-mounted Control Devices... 33
11 Electronic Equipment... 33
12 Controlgear. Location, Mounting, and Enclosures... 33
13 Conductors and Cables... 36
14 Wiring Practices... 42
15 Electric Motors and Associated Equipment... 45
16 Accessories... 45
17 Marking, Warning Signs and Reference Designations... 46
18 Technical Documentation... 46
19 Testing and Verification... 46
Annex A (informative) Examples of Machines Covered by this Part of GB 5226... 49
Annex B (informative) Inquiry Form for the HV Equipment of Machines... 50
Annex C (informative) Method of Calculation for the Cross-sectional Area of Bare
Protective Conductors in Supply Systems with Direct Earthing or Low Impedance
Earthing of the Neutral... 54
Annex D (informative) Relationship between Cable Rated Voltages and Highest
Voltage for HV Equipment... 55
Annex E (informative) Rationalization of the Use of Terms Relating to Earthing and
Protective Bonding... 56
Index... 59
Foreword
In this Part, Clause 1, Clause 2, Clause 3, 4.5, 12.3 and Clause 18 are recommended, and
the remaining is mandatory.
GB 5226 Safety of Machinery - Electrical Equipment of Machines is divided into the following
parts.
---Part 1.General Requirements;
---Part 11.Requirements for HV Equipment for Voltages above 1,000 Va.c. or 1,500 Vd.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.
This is Part 11 of GB 5226.It equivalently adopts IEC 60204-11.2000 Safety of Machinery -
Electrical Equipment of Machines - Part 11.Requirements for HV Equipment for Voltages
above 1,000 Va.c. or 1,500 Vd.c. and Not Exceeding 36 kV (English Version).
This Part equivalently translates IEC 60204-11.2000.
In this Part, Annex A, Annex B, Annex C, Annex D and Annex E are informative.
This Part was proposed by China Machinery Industry Federation.
This Part shall be under the jurisdiction of National Technical Committee on Industrial
Machinery Electrical System of Standardization Administration of China (SAC/TC 231).
The drafting organizations of this Part. School of Mechanical Engineering, Beijing Union
University; Beijing Beikai Electric Co., Ltd.
The main drafters of this Part. Xue Lijun, Lv Dezeng, Huang Ping, Gong Daoxiong, Liu Huan.
1 Scope
This Part of GB 5226 applies to the electrical and electronic equipment and systems of machines,
including a group of machines working together in a coordinated manner, but excluding higher
level system aspects (i.e., communications between systems).
2 Normative References
The clauses of the following documents become clauses of this Part through the normative
references in this Part of GB 5226.In terms of references with a specified date, all subsequent
amendments (excluding errata content) or revisions do not apply to this Part. However, the
various parties that reach an agreement in accordance with this Part are encouraged to explore
whether the latest versions of these documents are applicable. In terms of references without a
date, the latest versions apply to this Part.
3 Definitions
NOTE The index lists, in alphabetical order, the terms defined in this clause and indicates where
they are used in the text of this Part of GB 5226.
4 General Requirements
Electrical equipment shall be installed in accordance with the supplier's instructions, and
ergonomic principles should be taken into account.
5 Incoming Supply Conductor Terminations, Devices for
Disconnecting and Switching off, and Means for Earthing
For each incoming HV supply, means shall be provided to earth and short-circuit all live
conductors by connecting them to the earthing system (e.g., for work on the HV equipment).
6 Protection against Electric Shock
Protection against direct contact with live parts, parts with insulation for functional purposes
only and with parts which can be considered to have a hazardous potential (for examples of
such parts see 7.1.1 of HD 637.1999) shall be provided as follows.
7 Protection of HV Equipment
Overcurrent protection shall be provided where the current in a machine circuit can exceed
either the rating of any component or the current-carrying capacity of the conductors, whichever
is the lesser value. The ratings or settings to be used are detailed in 7.2.6.
8 Equipotential Bonding
Where the continuity of the protective bonding circuit can be interrupted by means of removable
current collectors or plug/socket combinations, the protective bonding circuit shall not be
interrupted before the live conductors have been disconnected, and shall be reestablished before
any live conductor is reconnected. This also applies to removable or withdrawable plug-in units
(see also 14.4).
9 Control Circuits and Control Functions
The requirements of Clause 9 of GB 5226.1-2002 apply except where the LV control circuits
are covered by other standards. Control circuits directly connected to high-voltage circuits (e.g.,
thyristor gate circuits) shall be electrically separated from low voltage circuits by the use of an
interface technique such as optical coupling or transformer coupling.
10 Operator Interface and Machine-mounted Control Devices
The requirements of Clause 10 of GB 5226.1-2002 apply, but the minimum degree of protection
against direct contact shall be IPXXDH for operator interface and machine-mounted control
devices (see also 6.2, protection against direct contact).
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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