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GB 4943-2001 (GB4943-2001)

GB 4943-2001_English: PDF (GB4943-2001)
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GB 4943-2001English770 Add to Cart 0--9 seconds. Auto-delivery Safety of information technology equipment Obsolete GB 4943-2001

BASIC DATA
Standard ID GB 4943-2001 (GB4943-2001)
Description (Translated English) Safety of information technology equipment
Sector / Industry National Standard
Classification of Chinese Standard L09
Classification of International Standard 35.020
Word Count Estimation 166,143
Date of Issue 2001-11-12
Date of Implementation 2002-05-01
Older Standard (superseded by this standard) GB 4943-1995
Adopted Standard IEC 60950-1999, MOD
Drafting Organization China Electronics Standardization Institute
Administrative Organization China Electronics Standardization Institute
Regulation (derived from) Announcement of Newly Approved National Standards No. 23 of 2011
Proposing organization Ministry of Information Industry of the People Republic of China
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary This Chinese standard applies to power supply or battery-powered, rated voltage not exceeding 600V of information technology equipment, including electrical business equipment and associated equipment. This standard is also applicable to the design and reserve directly connected to the communication network information technology equipment, regardless of the way power.

Standards related to: GB 4943-2001

GB 4943-2001 (Replaced by GB 4943.1-2011)
GB4943-2001 (Replaced by GB4943.1-2011)
ICS 35.020
L 09
GB
National Standard
of The People’s Republic of China
GB 4943-2001 (Replaced by. GB 4943.1-2011)
Eqv. IEC 60950. 1999
Safety of Information Technology
Equipment
ISSUED ON. NOVEMBER 12, 2001
IMPLEMENTED ON. MAY 1, 2002
Issued by. State Administration of Quality Supervision, Inspection and
Quarantine, PRC
Table of Contents
Preface ... 14
IEC Foreword ... 15
INTRODUCTION ... 16
0 Principles of safety ... 16
0.1 General principles of safety ... 16
0.2 Hazards ... 18
0.2.1 Electric shock ... 18
0.2.2 Energy related hazards ... 20
0.2.3 Fire ... 21
0.2.4 Heat related hazards ... 21
0.2.5 Mechanical hazards ... 22
0.2.6 Radiation ... 22
0.2.7 Chemical hazards ... 23
0.3 Materials and components ... 23
1 General ... 24
1.1 Scope ... 24
1.1.1 Equipment covered by this Standard ... 24
1.1.2 Additional requirements ... 25
1.1.3 Exclusions ... 26
1.2 Definitions ... 26
1.2.1 Equipment electrical ratings ... 26
1.2.2 Operating conditions ... 27
1.2.3 Equipment mobility ... 28
1.2.3.2 HAND-HELD EQUIPMENT ... 28
1.2.4 Classes of equipment – Protection against electric shock ... 29
1.2.5 Connection to the supply ... 30
1.2.6 Enclosures ... 31
1.2.7 Accessibility ... 32
1.2.8 Circuits and circuit characteristics ... 33
1.2.9 Insulation ... 37
1.2.10 CLEARANCE & CREEPAGE DISTANCE ... 38
1.2.11 Components ... 39
1.2.12 Flammability ... 40
1.2.13 Miscellaneous ... 42
1.3 General requirements ... 44
1.3.1 Application of requirements ... 44
1.3.2 Equipment design and construction ... 45
1.3.3 Supply voltage ... 45
1.3.4 Constructions not specifically covered ... 45
1.3.5 Equivalent materials ... 45
1.3.6 Orientation during transport and use ... 46
1.3.7 Choice of criteria ... 46
1.3.8 Examples mentioned in this Standard ... 46
1.3.9 Conductive liquids ... 46
1.4 General conditions for tests ... 46
1.4.1 Application of tests ... 46
1.4.2 Type tests ... 47
1.4.3 Test samples... 47
1.4.4 Operating parameters for tests ... 48
1.4.5 Supply voltage for tests ... 48
1.4.6 Supply frequency for tests ... 49
1.4.7 Electrical measuring instruments... 49
1.4.8 Normal operating voltages ... 49
1.4.9 Measurement of voltage to earth ... 50
1.4.10 Loading configuration of the EUT ... 50
1.4.11 Power from a telecommunication network ... 51
1.4.12 Temperature measurement conditions ... 51
1.4.13 Temperature measurement methods ... 51
1.4.14 Simulated faults and abnormal conditions ... 52
1.5 Components... 53
1.5.1 General ... 53
1.5.2 Evaluation and testing of components ... 53
1.5.3 Thermal controls ... 54
1.5.4 Transformers ... 54
1.5.5 Interconnecting cables ... 54
1.5.6 Capacitor of PRIMARY CIRCUIT ... 54
1.5.7 Components bridging double insulation or reinforced insulation ... 55
1.5.7.1 Bridging Capacitor ...
...