GB/T 21711.1-2008 English PDF (GBT21711.1-2008)

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GB/T 21711.1-2008: Electromechanical elementary relays -- Part 1: General and safety requirements
GB/T 21711.1-2008
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 29.120.70; 31.220.99
L 25
GB/T 21711.1-2008 / IEC 61810-1.2003
Electromechanical elementary relays –
Part 1. General and safety requirements
(IEC 61810-1.2003, IDT)
ISSUED ON. APRIL 11, 2008
IMPLEMENTED ON. SEPTEMBER 1, 2008
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword ... 4 
1 Scope ... 5 
2 Normative references ... 6 
3 Terms and definitions ... 8 
4 Influence quantities ... 20 
5 Rated values ... 21 
6 General provisions for testing ... 24 
7 Documentation and marking ... 25 
8 Terminations ... 28 
9 Sealing ... 30 
10 Insulation resistance and dielectric strength ... 30 
11 Heating ... 33 
12 Basic operating function ... 37 
13 Heat and fire resistance ... 38 
14 Electrical endurance ... 39 
15 Mechanical endurance ... 40 
16 Clearances, creepage distances and solid insulation ... 41 
Annex A ... 48 
Annex B ... 51 
Annex C ... 52 
Annex D ... 53 
Annex E ... 56 
Annex F ... 58 
Annex G ... 60 
Annex H ... 62 
Annex I ... 67 
Annex J ... 68 
Annex K ... 69 
Foreword
GB/T 21711 Electromechanical elementary relays consists of the following parts.
- Part 1. General and safety requirements;
- Part 2. Reliability;
- Part 7. Test and measurement procedures.
This Part is the first part of GB/T 21711 Electromechanical elementary relays.
This Part is identical with IEC 61810-1.2003 Electromechanical elementary
relays - Part 1. General and safety requirements (English version). For easy of
use, this Part makes the following editorial changes.
a) deleted IEC foreword;
b) footnotes in tables used lowercase English letters to meet writing
requirements for national standards;
c) used decimal point “.” to replace the “,” that acts as decimal point;
d) used “this Part” to replace “this international standard”.
Annex A, Annex B, Annex D, Annex E, Annex F, Annex H, Annex I, Annex J,
Annex K of this Part are normative; Annex C, Annex G are informative.
This Part was proposed by Ministry of Information Industry of the People’s
Republic of China.
This Part shall be under the jurisdiction of National Technical Committee on All
or Nothing Relays of Standardization Administration of China.
The drafting organization of this Part. China Electronics Standardization
Institute (CESI).
Main drafters of this Part. Wang Jue, Shi Xinyuan.
Electromechanical elementary relays –
Part 1. General and safety requirements
1 Scope
This Part applies to electromechanical elementary relays (non-specified time all
or-nothing relays) for incorporation. It defines the basic safety-related and
functional requirements for applications in all areas of electrical engineering or
electronics, such as.
• general industrial equipment,
• electrical facilities,
• electrical machines,
• electrical appliances for household and similar use,
• information technology and business equipment,
• building automation equipment,
• automation equipment,
• electrical installation equipment,
• medical equipment,
• control equipment,
• telecommunications,
• vehicles,
• transportation,
• etc.
Compliance with the requirements of this Standard is verified by the type tests
indicated.
In case the application of a relay determines additional requirements exceeding
those specified in this Standard, the relay should be assessed in line with this
application in accordance with the relevant IEC standard(s) (for example IEC
60730-1.1999, IEC 60335-1.1991, IEC 60950-1.2001).
2 Normative references
The following standards contain the provisions which, through reference in this
Part, constitute the provisions of this Part. For dated references, subsequent
amendments (excluding corrections) or revisions do not apply to this Part.
However, the parties who enter into agreement based on this Part are
encouraged to investigate whether the latest versions of these documents are
applicable. For undated reference documents, the latest versions apply to this
Part.
GB/T 16935.1-1997 Insulation coordination for equipment within low-
voltage systems. Part 1. Principles, requirements and tests (idt IEC 60664-
1.1992)
Amendment 1 (2000)
Amendment 2 (2002)
GB 17196-1997 Connecting devices - Flat quick-connect terminations for
electrical copper conductors - Safety requirements (idt IEC 61210.1993)
GB/T 19405.1-2003 Surface mounting technology - Part 1. Standard
method for the specification of surface mounting components (SMDs) (idt
IEC 61760-1.1998)
IEC 60038.1993 IEC standard voltages
Amendment 1 (1984)
Amendment 2 (1997)
IEC 60050 International Electrotechnical Vocabulary
IEC 60068-2-17.1994 Basic environmental testing procedures - Part 2.
Tests - Test Q. Sealing
IEC 60068-2-20.1979 Basic environmental testing procedures - Part 2.
Tests - Test T. Soldering
Amendment 2 (1987)
IEC 60085.1984 Thermal evaluation and classification of electrical
insulation
IEC 60112.2003 Method for the determination of the proof and the
comparative tracking indices of solid insulating materials
IEC 60335-1.1991 Safety of household and similar electrical appliances -
Part 1. General requirements
IEC 60364-4-44.2001 Electrical installations of buildings Part 4-44.
Protection for safety - Protection against voltage and electromagnetic
disturbance
IEC 60417-DB.2002 Graphical symbols for use on equipment
IEC 60695-2-2.1991 Fire hazard testing - Part 2. Test methods - Section 2.
Needle flame test
Amendment 1 (1994)
IEC 60695-2-10.2000 Fire hazard testing - Part 2-10. Glowing/hot-wire
based test methods - Glow-wire apparatus and common test procedure
IEC 60695-10-2.1995 Fire hazard testing - Part 10-2. Guidance and test
methods for the minimization of the effects of abnormal heat on
electrotechnical products involved in fires - Method for testing products made
from non-metallic materials for resistance to heat using the ball pressure test
Amendment 1 (2001)
IEC 60721-3-3.1994 Classification of environmental conditions - Part 3-3.
Classification of groups of environmental parameters and their severities –
Stationary use at weather protected locations
Amendment 1 (1995)
Amendment 2 (1996)
IEC 60730-1.1999 Automatic electrical controls for household and similar
use - Part 1. General requirements
IEC 60947-5-1.1997 Low-voltage switchgear and controlgear - Part 5-1.
Control circuit devices and switching elements - Electromechanical control
circuit devices
Amendment 1 (1999)
Amendment 2 (1999)
IEC 60950-1.2001 Information technology equipment - Safety - Part 1.
General requirements
IEC 60999-1.1999 Connecting devices - Electrical copper conductors -
Safety requirements for screw-type and screwless-type clamping units - Part
1. General requirements and particular requirements for clamping units for