This part of IEC 60947 applies to control circuit devices and switching elements intended for controlling, signalling, interlocking, etc., of switchgear and controlgear.<\/p>\n
It applies to control circuit devices having a rated voltage not exceeding 1 000 V a.c. (at a frequency not exceeding 1 000 Hz) or 600 V d.c.<\/p>\n
However, for operational voltages below 100 V a.c. or d.c., see 4.3.2.2.<\/p>\n
This standard applies to specific types of control circuit devices such as:<\/p>\n
manual control switches, for example push-buttons, rotary switches, foot switches, etc.;<\/p>\n<\/li>\n
electromagnetically operated control switches, either time-delayed or instantaneous, for example contactor relays;<\/p>\n<\/li>\n
pilot switches, for example pressure switches, temperature sensitive switches (thermostats), programmers, etc.;<\/p>\n<\/li>\n
position switches, for example control switches operated by part of a machine or mechanism;<\/p>\n<\/li>\n
associated control circuit equipment, for example indicator lights, etc.<\/p>\n<\/li>\n<\/ul>\n
\nNOTE 1 A control circuit device includes (a) control switch(es) and associated devices such as (an) indicator light(s).<\/p>\n
NOTE 2 A control switch includes (a) switching element(s) and an actuating system.<\/p>\n
NOTE 3 A switching element can be a contact element or a semiconductor element.<\/p>\n<\/blockquote>\n
It also applies to specific types of switching elements associated with other devices (whose main circuits are covered by other standards) such as:<\/p>\n
\n
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auxiliary contacts of a switching device (e.g. contactor, circuit breaker. etc.) which are not dedicated exclusively for use with the coil of that device;<\/p>\n<\/li>\n
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interlocking contacts of enclosure doors;<\/p>\n<\/li>\n
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control circuit contacts of rotary switches;<\/p>\n<\/li>\n
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control circuit contacts of overload relays.<\/p>\n<\/li>\n<\/ul>\n
Contactor relays also comply with the requirements and tests of IEC 60947-4-1 except for the utilization category which comply with this standard.<\/p>\n
This standard does not include the relays covered in IEC 60255 or in the IEC 61810 series, nor automatic electrical control devices for household and similar purposes.<\/p>\n
The colour requirements of indicator lights, push-buttons, etc., are found in IEC 60073 and also in CIE S 0004\/E-2001 from the Commission of Illumination (CIE)<\/p>\n
The object of this standard is to state:<\/p>\n
\n
- \n
the characteristics of control circuit devices;<\/p>\n<\/li>\n
- \n
the electrical and mechanical requirements with respect to:<\/p>\n
\n
- \n
the various duties to be performed;<\/p>\n<\/li>\n
- \n
the significance of the rated characteristics and of the markings;<\/p>\n<\/li>\n
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the tests to verify the rated characteristics;<\/p>\n<\/li>\n<\/ol>\n<\/li>\n
- \n
the functional requirements to be satisfied by the control circuit devices with respect to:<\/p>\n
\n
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environmental conditions, including those of enclosed equipment;<\/p>\n<\/li>\n
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dielectric properties;;<\/p>\n<\/li>\n
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terminals.<\/p>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n
PDF Catalog<\/h4>\n
\n
\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 2<\/td>\n undefined <\/td>\n<\/tr>\n \n 11<\/td>\n English
CONTENTS <\/td>\n<\/tr>\n\n 18<\/td>\n FOREWORD <\/td>\n<\/tr>\n \n 20<\/td>\n 1 General
1.1 Scope and object <\/td>\n<\/tr>\n\n 21<\/td>\n 1.2 Normative references <\/td>\n<\/tr>\n \n 23<\/td>\n 2 Terms and definitions <\/td>\n<\/tr>\n \n 25<\/td>\n 2.1 Basic terms and definitions <\/td>\n<\/tr>\n \n 26<\/td>\n 2.2 Control switches <\/td>\n<\/tr>\n \n 29<\/td>\n 2.3 Parts of control switches <\/td>\n<\/tr>\n \n 31<\/td>\n 2.4 Operation of control switches
2.4.1 Operation of contactor relays
2.4.2 Operation of pilot switches <\/td>\n<\/tr>\n\n 32<\/td>\n 2.4.3 Operation of rotary switches <\/td>\n<\/tr>\n \n 33<\/td>\n 2.4.4 Operation of mechanically operated control switches <\/td>\n<\/tr>\n \n 34<\/td>\n 3 Classification
3.1 Contact elements
3.2 Control switches
3.3 Control circuit devices
3.4 Time delay switching elements
3.5 Control switch mounting
4 Characteristics
4.1 Summary of characteristics
4.1.1 General <\/td>\n<\/tr>\n\n 35<\/td>\n 4.1.2 Operation of a control switch
4.2 Type of control circuit device or switching element
4.2.1 Kind of control circuit device
4.2.2 Kind of switching elements
4.2.3 Number of poles
4.2.4 Kind of current <\/td>\n<\/tr>\n\n 36<\/td>\n 4.2.5 Interrupting medium
4.2.6 Operating conditions
4.3 Rated and limiting values for switching elements
4.3.1 General
4.3.2 Rated voltages (of a switching element) <\/td>\n<\/tr>\n\n 37<\/td>\n 4.3.3 Currents
4.3.4 Rated frequency
4.3.5 Vacant
4.3.6 Normal and abnormal load characteristics
4.3.7 Shortcircuit characteristics
4.4 Utilization categories for switching elements <\/td>\n<\/tr>\n\n 38<\/td>\n 4.5 Vacant
4.6 Vacant
4.7 Vacant
4.8 Vacant
4.9 Vacant
4.10 Electrically separated contact elements
4.11 Actuating quantities for pilot switches
4.12 Pilot switches having two or more contact elements
5 Product information
5.1 Nature of information
Tables
Table 1 \u2013 Utilization categories for switching elements <\/td>\n<\/tr>\n\n 39<\/td>\n 5.2 Marking
5.2.1 General
5.2.2 Terminal identification and marking <\/td>\n<\/tr>\n\n 40<\/td>\n 5.2.3 Functional markings
5.2.4 Emergency stop
5.2.5 Operating diagram
5.2.6 Time delay markings
5.3 Instructions for installation, operation and maintenance <\/td>\n<\/tr>\n\n 41<\/td>\n 5.4 Additional information
6 Normal service, mounting and transport conditions
6.3.1 Mounting of single hole mounted devices
Table 2 \u2013 Mounting hole diameter and dimensions of the key recess (if any) <\/td>\n<\/tr>\n\n 42<\/td>\n 7 Constructional and performance requirements
7.1 Constructional requirements
7.1.1 General
7.1.2 Materials
Table 3 \u2013 Preferred minimum distances between centres of mounting holes <\/td>\n<\/tr>\n\n 43<\/td>\n 7.1.3 Current-carrying parts and their connections
7.1.4 Clearances and creepage distances <\/td>\n<\/tr>\n\n 44<\/td>\n 7.1.7 Conditions for control switches suitable for isolation
7.1.8 Terminals
7.1.14 Class II control circuit devices
7.1.15 Requirements for control devices with integrally connected cables
7.2 Performance requirements
7.2.3 Dielectric properties
7.2.4 Ability to make and break under normal and abnormal load conditions <\/td>\n<\/tr>\n\n 45<\/td>\n 7.2.5 Conditional short-circuit current
7.2.6 Vacant
7.2.7 Additional requirements for control switches suitable for isolation
7.2.8 Maximum recovery time
7.3 Electromagnetic compatibility (EMC)
7.3.1 General <\/td>\n<\/tr>\n\n 46<\/td>\n 7.3.2 Immunity <\/td>\n<\/tr>\n \n 47<\/td>\n 7.3.3 Emission <\/td>\n<\/tr>\n \n 48<\/td>\n Table 4 \u2013 Verification of making and breaking capacities of switching elements under normal conditions corresponding to the utilization categories <\/td>\n<\/tr>\n \n 49<\/td>\n Table 5 \u2013 Verification of making and breaking capacities of switching elements under abnormal conditions corresponding to the utilization categories
Table 6 \u2013 Test conditions for glow-wire test <\/td>\n<\/tr>\n\n 50<\/td>\n Table 7 \u2013 Acceptance criteria <\/td>\n<\/tr>\n \n 51<\/td>\n Table 8 \u2013 Immunity tests <\/td>\n<\/tr>\n \n 52<\/td>\n 8 Tests
8.1 Kinds of test
8.1.1 General
8.1.2 Type tests
8.1.3 Routine tests <\/td>\n<\/tr>\n\n 53<\/td>\n 8.1.4 Sampling tests
8.1.5 Special tests
8.2 Compliance with constructional requirements
8.2.1 Materials
8.2.2 Equipment <\/td>\n<\/tr>\n\n 54<\/td>\n 8.2.3 Enclosures for equipment
8.2.4 Mechanical and electrical properties of terminals <\/td>\n<\/tr>\n\n 55<\/td>\n 8.2.5 Verification of actuating force (or moment)
8.2.6 Verification of limitation of rotation (of a rotary switch)
8.2.7 Conduit pull-out test, torque test and bending test with metallic conduits
8.3 Performance
8.3.1 Test sequences <\/td>\n<\/tr>\n\n 56<\/td>\n 8.3.2 General test conditions <\/td>\n<\/tr>\n \n 57<\/td>\n 8.3.3 Performance under no-load, normal load and abnormal load conditions <\/td>\n<\/tr>\n \n 60<\/td>\n 8.3.4 Performance under conditional short-circuit current <\/td>\n<\/tr>\n \n 61<\/td>\n 8.4 Tests for EMC
8.4.1 General
8.4.2 Immunity <\/td>\n<\/tr>\n\n 62<\/td>\n 8.4.3 Emission
8.4.4 Test results and test report <\/td>\n<\/tr>\n\n 63<\/td>\n Table 9 \u2013 Test values for electrical performance and ageing test of screwless-type clamping units <\/td>\n<\/tr>\n \n 64<\/td>\n Figures
Figure 1 \u2013 Examples of the recommended method for drawing an operating diagram of a rotary switch <\/td>\n<\/tr>\n\n 65<\/td>\n Figure 2 \u2013 Operation of push-buttons
Figure 3 \u2013 Difference e between the over-travel of the actuator and that of the contact element <\/td>\n<\/tr>\n\n 66<\/td>\n Figure 4 \u2013 Examples of contact elements (schematic sketches) <\/td>\n<\/tr>\n \n 67<\/td>\n Figure 5 \u2013 Test circuits for multi-pole control switches \u2013 Contacts of same polarity, not electrically separated
Figure 6 \u2013 Test circuits for multi-pole control switches \u2013 Contacts of opposite polarity, and electrically separated <\/td>\n<\/tr>\n\n 68<\/td>\n Figure 7 \u2013 Load Ld details for test conditions requiring different values of make and break current and\/or power factor (time constant)
Figure 8 \u2013 Test circuit, conditional short-circuit current (see 8.3.4.2) <\/td>\n<\/tr>\n\n 69<\/td>\n Figure 9 \u2013 Current\/time limits for d.c. test loads (see 8.3.3.5.4)
Figure 10 \u2013 Voltage drop measurement at contactpoint of the clamping unit or terminal <\/td>\n<\/tr>\n\n 70<\/td>\n Annexes
Annex A (normative) Electrical ratings based on utilization categories (see 3.1)
Table A.1 \u2013 Examples of contact rating designation based on utilization categories <\/td>\n<\/tr>\n\n 71<\/td>\n Table A.2 \u2013 Examples of semiconductors switching element ratingsfor 50 Hz and\/or 60 Hz 1)
Table A.3 \u2013 Examples of semiconductors switching element ratings for d.c. 1) <\/td>\n<\/tr>\n\n 72<\/td>\n Annex B (normative) Example of inductive test loads for d.c. contacts
B.1 General
B.2 Construction <\/td>\n<\/tr>\n\n 73<\/td>\n Figure B.1 \u2013 Construction of load for d.c. contacts
Table B.1 \u2013 DC loads <\/td>\n<\/tr>\n\n 74<\/td>\n Annex C (normative) Special tests \u2013 Durability tests
C.1 General
C.1.1 Durability declaration
C.1.2 Test procedures <\/td>\n<\/tr>\n\n 75<\/td>\n C.1.3 Failure criteria
C.2 Mechanical durability
C.2.1 General
C.2.2 Test procedures
C.3 Electrical durability
C.3.1 General
C.3.2 Test procedures <\/td>\n<\/tr>\n\n 76<\/td>\n Table C.1 \u2013 Making and breaking conditions for electrical durability <\/td>\n<\/tr>\n \n 77<\/td>\n Figure C.1 \u2013 Normal circuit (see C.3.2.2)
Figure C.2 \u2013 Simplified circuit (see C.3.2.2) <\/td>\n<\/tr>\n\n 78<\/td>\n Annex D Vacant <\/td>\n<\/tr>\n \n 79<\/td>\n Annex E (normative) Items subject to agreement between manufacturer and user <\/td>\n<\/tr>\n \n 80<\/td>\n Annex F (normative) Class II control circuit devices insulated by encapsulation Requirements and tests
F.1 General
F.2 Terms and definitions
F.5 Marking <\/td>\n<\/tr>\n\n 81<\/td>\n F.7 Instructional and functional requirements
F.7.1 Choice of compound
F.7.2 Adhesion of the compound
F.7.3 Dielectric properties
F.8 Tests
F.8.1 Kind of tests
Figure F.1 \u2013 Insulation by encapsulation <\/td>\n<\/tr>\n\n 82<\/td>\n Figure F.2 \u2013 Test apparatus <\/td>\n<\/tr>\n \n 84<\/td>\n Annex G (normative) Additional requirements for control circuit devices with integrally connected cables
G.1 General
G.2 Terms and definitions
G.7 Constructional and performance requirements
G.7.1 Constructional requirements <\/td>\n<\/tr>\n\n 85<\/td>\n G.7.2 Performance requirements
G.8 Tests
G.8.1 General
G.8.2 Type tests <\/td>\n<\/tr>\n\n 86<\/td>\n G.8.3 Results to be obtained <\/td>\n<\/tr>\n \n 87<\/td>\n Annex H (normative) Additional requirements for semiconductor switching elements for control circuit devices
H.1 General
H.2 Terms and definitions
H.3 Classification
H.3.1 Semiconductor switching elements
H.4 Characteristics
H.4.1 Rated voltage <\/td>\n<\/tr>\n\n 88<\/td>\n H.4.2 Utilization categories
H.5 Product information
H.7 Constructional and performance requirements
H.7.1 Performance requirements
Figure H.1 \u2013 Relationship between Ue and UB <\/td>\n<\/tr>\n\n 89<\/td>\n H.7.2 Ability to make under abnormal and normal conditions
H.7.3 Conditional short-circuit current
H.7.4 Electromagnetic compatibility (EMC)
H.8 Tests
H.8.1 Type tests
H.8.2 Voltage drop (Ud) <\/td>\n<\/tr>\n\n 90<\/td>\n H.8.3 Minimum operational current (Im)
H.8.4 OFF-state current (Ir)
H.8.5 Making and breaking capacities
H.8.6 Performance under short-circuit current conditions
Figure H.2 \u2013 Example of test circuit for the verification of voltage drop, minimum operational current and OFF-state current (see H.8.2, H.8.3 and H.8.4) <\/td>\n<\/tr>\n\n 91<\/td>\n H.8.7 Verification of electromagnetic compatibility
Figure H.3 \u2013 Short-circuit testing (see H.8.6.1) <\/td>\n<\/tr>\n\n 93<\/td>\n Annex J (normative) Special requirements for indicator lights and indicating towers
J.1 General
J.2 Terms and definitions
J.3 Classification <\/td>\n<\/tr>\n\n 94<\/td>\n J.4 Characteristics
J.4.1 Rated operational voltage of an indicator light
J.4.2 Rated thermal power of an indicator light
J.4.3 Rated values of the lamp
J.5 Product information
J.6 Normal service, mounting and transport conditions <\/td>\n<\/tr>\n\n 95<\/td>\n J.7 Constructional and performance requirements
J.8 Tests
J.8.3 Tests for indicator lights and indicating towers
Figure J.1 \u2013 Mounting dimensions for indicating tower socket <\/td>\n<\/tr>\n\n 96<\/td>\n Figure J.2 \u2013 Mounting dimensions for temperature rise tests <\/td>\n<\/tr>\n \n 97<\/td>\n J.8.4 Shock and vibration <\/td>\n<\/tr>\n \n 98<\/td>\n J.8.5 Degree of protection for indicating towers <\/td>\n<\/tr>\n \n 99<\/td>\n Annex K (normative) Special requirements for control switches with direct opening action
K.1 General
K.2 Terms and definitions
K.3 Classification <\/td>\n<\/tr>\n\n 100<\/td>\n K.4 Characteristics
K.4.4 Utilization categories for switching elements
K.5 Product information
K.5.2 Marking
K.5.4 Additional information <\/td>\n<\/tr>\n\n 101<\/td>\n K.6 Normal service, mounting and transport conditions
K.7 Constructional and performance requirements <\/td>\n<\/tr>\n\n 102<\/td>\n K.8 Tests <\/td>\n<\/tr>\n \n 104<\/td>\n Figure K.1 \u2013 Verification of robustness of the actuating system <\/td>\n<\/tr>\n \n 105<\/td>\n Annex L (normative) Special requirements for mechanically linked contact elements
L.1 General
L.2 Terms and definitions
L.3 Classification
L.4 Characteristics
L.5 Product information <\/td>\n<\/tr>\n\n 106<\/td>\n L.6 Normal service, mounting and transport conditions
L.7 Constructional and performance requirements
L.8 Tests
Figure L.1 \u2013 Example of representation of NO and NC contacts which are mechanically linked and NC non-linked contact
Figure L.2 \u2013 Symbol for device containing mechanically linked contacts <\/td>\n<\/tr>\n\n 107<\/td>\n L.8.4 Special test for mechanically linked contact elements <\/td>\n<\/tr>\n \n 108<\/td>\n Annex M (normative) Terminal marking, distinctive number and distinctive letter for control circuit devices
M.1 Scope
M.2 Terminal marking rule
M.2.1 General
M.2.2 Function digit
M.2.3 Sequence digit <\/td>\n<\/tr>\n\n 109<\/td>\n M.2.4 Numbering method
M.3 Distinctive number and distinctive letter
M.3.1 General
M.3.2 Distinctive number
M.3.3 Distinctive letter
M.4 Terminal numbering sequence <\/td>\n<\/tr>\n\n 110<\/td>\n M.5 Contactor relays designated by the distinctive letter E
Table M.1 \u2013 Diagrams of control switches <\/td>\n<\/tr>\n\n 111<\/td>\n Table M.2 \u2013 Diagrams of contactor relays designated by the distinctive letter E <\/td>\n<\/tr>\n \n 112<\/td>\n M.6 Contactor relays designated by distinctive letters X, Y or Z
M.6.1 Contactor relays designated by the distinctive letter Z
M.6.2 Contactor relays designated by the distinctive letter X
M.6.3 Contactor relays designated by the distinctive letter Y
Table M.3 \u2013 Diagrams of contactor relays designated by the distinctive letter Y <\/td>\n<\/tr>\n\n 113<\/td>\n Annex N (normative) Procedure to determine reliability data for electromechanical devices in control circuits used in functional safety applications
N.1 General
N.1.1 Overview
N.1.2 Scope and object
N.1.3 General requirements
N.2 Terms, definitions and symbols
N.3 Method based on durability test results
N.3.1 General method
N.3.2 Test requirements <\/td>\n<\/tr>\n\n 114<\/td>\n N.3.3 Number of samples
N.3.4 Characterization of a failure mode
N.3.5 Weibull modelling
N.3.6 Useful life and upper limit of failure rate
N.3.7 Reliability data
N.4 Data information
N.5 Example <\/td>\n<\/tr>\n\n 115<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Low-voltage switchgear and controlgear – Control circuit devices and switching elements. Electromechanical control circuit devices<\/b><\/p>\n
\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2017<\/td>\n 116<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":250115,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[510,2641],"product_tag":[],"class_list":{"0":"post-250112","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-120-40","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/250112","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/250115"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=250112"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=250112"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=250112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}