{"id":424974,"date":"2024-10-20T06:54:22","date_gmt":"2024-10-20T06:54:22","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-60947-4-22023\/"},"modified":"2024-10-26T13:00:19","modified_gmt":"2024-10-26T13:00:19","slug":"bs-en-iec-60947-4-22023","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-60947-4-22023\/","title":{"rendered":"BS EN IEC 60947-4-2:2023"},"content":{"rendered":"

IEC 60947-4-2:2020 applies to semiconductor motor controllers, starters and soft-starters which can include a series mechanical switching device, intended to be connected to circuits the rated voltage of which does not exceed 1 000 V AC. This fourth edition cancels and replaces the third edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – scope exclusions; – editorial correction of notes and hanging paragraphs; – reference to IEC 62683-1; – safety aspects related to: – general aspects; – limited energy circuits; – electronic circuits; – mention of dedicated wiring accessories; – power consumption measurement; – alignment to IEC 60947-1:2020.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
6<\/td>\nAnnex ZA (normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n
8<\/td>\nBlank Page <\/td>\n<\/tr>\n
9<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
14<\/td>\nFOREWORD <\/td>\n<\/tr>\n
16<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
17<\/td>\n1 Scope <\/td>\n<\/tr>\n
18<\/td>\n2 Normative references <\/td>\n<\/tr>\n
19<\/td>\n3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions
3.1.1 Terms and definitions concerning the types of semiconductor motor controllers and starters <\/td>\n<\/tr>\n
20<\/td>\nFigures
Figure 1 \u2013 Semiconductor motor control devices <\/td>\n<\/tr>\n
21<\/td>\n3.1.2 Terms and definitions concerning semiconductor motor controllers and starters <\/td>\n<\/tr>\n
24<\/td>\n3.1.3 Terms and definitions concerning safety aspects <\/td>\n<\/tr>\n
25<\/td>\n3.1.4 Alphabetical index of terms <\/td>\n<\/tr>\n
27<\/td>\n3.2 Symbols and abbreviated terms
4 Classification
5 Characteristics of semiconductor motor controllers and starters
5.1 Summary of characteristics <\/td>\n<\/tr>\n
28<\/td>\n5.2 Type of equipment
5.2.1 Kind of equipment
5.2.2 Number of poles
5.2.3 Kind of current
5.2.4 Interrupting medium (air, vacuum, etc.)
5.2.5 Operating conditions of the equipment <\/td>\n<\/tr>\n
29<\/td>\n5.3 Rated and limiting values for main circuits
5.3.1 Rated voltages <\/td>\n<\/tr>\n
31<\/td>\nFigure 2 \u2013 Connecting methods <\/td>\n<\/tr>\n
32<\/td>\n5.3.3 Rated frequency
5.3.4 Duty cycle values and sequences
5.3.5 Normal load and overload characteristics <\/td>\n<\/tr>\n
34<\/td>\n5.3.6 Rated conditional short-circuit current
5.3.7 Semiconductor motor controller power losses <\/td>\n<\/tr>\n
35<\/td>\n5.4 Utilization category
5.4.1 General
5.4.2 Assignment of ratings based on the results of tests
Tables
Table 1 \u2013 Utilization categories <\/td>\n<\/tr>\n
36<\/td>\n5.5 Control circuits
5.6 Auxiliary circuits
5.7 Characteristics of relays and releases (overload relays)
5.7.1 Summary of characteristics
Table 2 \u2013 Relative levels of severity <\/td>\n<\/tr>\n
37<\/td>\n5.7.2 Types of relay or release
5.7.3 Characteristic values <\/td>\n<\/tr>\n
38<\/td>\n5.7.4 Designation and current settings of overload relays
5.7.5 Time-current characteristics of overload relays
Table 3 \u2013 Trip classes of overload relays <\/td>\n<\/tr>\n
39<\/td>\n5.7.6 Influence of ambient air temperature
5.8 Coordination with short-circuit protective devices (SCPD)
6 Product information
6.1 Nature of information <\/td>\n<\/tr>\n
41<\/td>\n6.2 Marking
6.3 Instructions for installation, operation, maintenance, decommissioning and dismantling
6.4 Environmental information <\/td>\n<\/tr>\n
42<\/td>\n7 Normal service, mounting and transport conditions
7.1 Normal service conditions
7.1.1 Ambient air temperature
7.1.2 Altitude
7.1.3 Atmospheric conditions
7.1.4 Shock and vibrations
7.2 Conditions during transport and storage
7.3 Mounting
7.4 Electrical system disturbances and influences <\/td>\n<\/tr>\n
43<\/td>\n8 Constructional and performance requirements
8.1 Constructional requirements
8.1.1 General
8.1.2 Materials <\/td>\n<\/tr>\n
44<\/td>\n8.1.3 Current-carrying parts and their connections
8.1.4 Clearances and creepage distances
8.1.5 Actuator
8.1.6 Indication of the contact position
8.1.7 Additional requirements for equipment suitable for isolation
8.1.8 Terminals <\/td>\n<\/tr>\n
45<\/td>\n8.1.9 Additional requirements for equipment provided with a neutral pole
8.1.10 Provisions for protective earthing
8.1.11 Enclosures for equipment
8.1.12 Degrees of protection of enclosed equipment
8.1.13 Conduit pull-out, torque and bending with metallic conduits
8.1.14 Limited energy source <\/td>\n<\/tr>\n
46<\/td>\nTable 19 \u2013 Limits for limited energy sources without an over-current protective device
Table 20 \u2013 Limits for limited energy sources with an over-current protective device <\/td>\n<\/tr>\n
47<\/td>\n8.1.15 Stored charge energy circuit
8.1.16 Fault and abnormal conditions
Table 21 \u2013 Limits for limited energy source with current limiting impedance <\/td>\n<\/tr>\n
48<\/td>\n8.1.17 Short-circuit and overload protection of ports
8.2 Performance requirements
8.2.1 Operating conditions <\/td>\n<\/tr>\n
50<\/td>\nTable 4 \u2013 Limits of operation of time-delay overload relayswhen energized on all poles <\/td>\n<\/tr>\n
51<\/td>\nFigure 3 \u2013 Thermal memory test <\/td>\n<\/tr>\n
52<\/td>\nTable 5 \u2013 Limits of operation of three-pole time-delay overload relayswhen energized on two poles only <\/td>\n<\/tr>\n
53<\/td>\n8.2.2 Temperature-rise <\/td>\n<\/tr>\n
54<\/td>\n8.2.3 Dielectric properties
Table 6 \u2013 Temperature-rise limits for insulated coils in air and in oil <\/td>\n<\/tr>\n
55<\/td>\n8.2.4 Normal load and overload performance requirements <\/td>\n<\/tr>\n
56<\/td>\nTable 7 \u2013 Minimum overload current withstand time (Tx) in relationto overload current ratio (X) and correspondingto overload relay trip class (see Table 3) <\/td>\n<\/tr>\n
57<\/td>\nTable 8 \u2013 Minimum requirements for thermal stability test conditions
Table 9 \u2013 Prospective locked rotor current by utilization categories <\/td>\n<\/tr>\n
58<\/td>\nTable 10 \u2013 Minimum requirements for overload capability test conditions <\/td>\n<\/tr>\n
59<\/td>\nTable 11 \u2013 Making and breaking capacity test; making and breaking conditionsaccording to utilization categories for the mechanical switching device <\/td>\n<\/tr>\n
60<\/td>\n8.2.5 Coordination with short-circuit protective devices
Table 12 \u2013 Conventional operational performance making and breaking conditionsaccording to utilization categories for the mechanical switching device <\/td>\n<\/tr>\n
61<\/td>\n8.3 EMC requirements
8.3.1 General
8.3.2 Immunity <\/td>\n<\/tr>\n
62<\/td>\nTable 13 \u2013 Specific performance criteriawhen EM disturbances are present <\/td>\n<\/tr>\n
63<\/td>\n8.3.3 Emission
9 Tests
9.1 Kinds of tests
9.1.1 General
9.1.2 Type tests <\/td>\n<\/tr>\n
64<\/td>\n9.1.3 Routine tests
9.1.4 Sampling tests
9.1.5 Special tests <\/td>\n<\/tr>\n
65<\/td>\n9.2 Compliance with constructional requirements
9.2.1 General
9.2.2 Electrical performance of screwless-type clamping units <\/td>\n<\/tr>\n
66<\/td>\n9.2.3 Ageing test for screwless-type clamping units
9.2.4 Limited energy source test
9.2.5 Breakdown of components <\/td>\n<\/tr>\n
67<\/td>\n9.2.6 Wire flexing test
9.3 Compliance with performance requirements
9.3.1 Test sequences <\/td>\n<\/tr>\n
68<\/td>\n9.3.2 General test conditions
9.3.3 Performance under no load, normal load, and overload conditions <\/td>\n<\/tr>\n
73<\/td>\nTable 14 \u2013 Thermal stability test specifications
Table 15 \u2013 Initial case temperature requirements <\/td>\n<\/tr>\n
75<\/td>\nTable 16 \u2013 Minimum requirements and conditions for performance testingwith an induction motor load <\/td>\n<\/tr>\n
78<\/td>\nFigure 4 \u2013 Multiple of current setting limits for ambient air temperaturecompensated time-delay overload relays <\/td>\n<\/tr>\n
79<\/td>\n9.3.4 Performance under short-circuit conditions <\/td>\n<\/tr>\n
82<\/td>\n9.4 EMC tests
9.4.1 General <\/td>\n<\/tr>\n
83<\/td>\n9.4.2 EMC immunity tests
9.4.3 EMC emission tests <\/td>\n<\/tr>\n
85<\/td>\nTable 17 \u2013 Terminal disturbance voltage limitsfor conducted radio-frequency emission (AC mains power port) <\/td>\n<\/tr>\n
86<\/td>\n9.5 Routine and sampling tests
9.5.1 General
9.5.2 Operation and operating limits
9.5.3 Dielectric tests
Table 18 \u2013 Radiated emissions test limits <\/td>\n<\/tr>\n
88<\/td>\nAnnexes
Annex A (normative)Marking and identification of terminals
A.1 General
A.2 Marking and identification of terminals of semiconductor controllersand starters
A.2.1 Marking and identification of terminals of main circuits
A.2.2 Marking and identification of terminals of control circuits
A.3 Marking and identification of terminals of overload relays
Table A.1 \u2013 Main circuit terminal markings <\/td>\n<\/tr>\n
89<\/td>\nAnnex B (xxx) <\/td>\n<\/tr>\n
90<\/td>\nAnnex C (normative)Coordination at the crossover current betweenthe starter and associated SCPD
C.1 General and definitions
C.1.1 General
C.1.2 Terms and definitions
C.2 Condition for the test for the verification of coordination at the crossover current by a direct method
C.3 Test currents and test circuits <\/td>\n<\/tr>\n
91<\/td>\nC.4 Test procedure and results to be obtained
C.4.1 Test procedure
C.4.2 Results to be obtained
C.5 Verification of coordination at the crossover current by an indirect method
C.5.1 General
C.5.2 Test for Icd <\/td>\n<\/tr>\n
92<\/td>\nC.5.3 Time-current characteristic withstand capability of controllers\/starters
Table C.1 \u2013 Test conditions <\/td>\n<\/tr>\n
93<\/td>\nFigure C.1 \u2013 Examples of time-current withstand characteristic <\/td>\n<\/tr>\n
94<\/td>\nAnnex D (xxx) <\/td>\n<\/tr>\n
95<\/td>\nAnnex E (xxx) <\/td>\n<\/tr>\n
96<\/td>\nAnnex F (informative)Operating capability <\/td>\n<\/tr>\n
97<\/td>\nFigure F.1 \u2013 Thermal stability test profile <\/td>\n<\/tr>\n
98<\/td>\nFigure F.2 \u2013 Overload capability test profile <\/td>\n<\/tr>\n
99<\/td>\nFigure F.3 \u2013 Blocking and commutating capability test profile <\/td>\n<\/tr>\n
100<\/td>\nAnnex G (informative)Rated operational currents and rated operational powersof switching devices for electrical motors
G.1 General
G.2 Rated operational powers and rated operational currents <\/td>\n<\/tr>\n
101<\/td>\nTable G.1 \u2013 Rated operational powers and rated operational currents of motors <\/td>\n<\/tr>\n
104<\/td>\nAnnex H (xxx) <\/td>\n<\/tr>\n
105<\/td>\nAnnex I (normative)Modified test circuit for short-circuit testingof semiconductor motor controllers and starters
Figure I.1 \u2013 Modified circuit for short-circuit testing of semiconductor devices <\/td>\n<\/tr>\n
106<\/td>\nFigure I.2 \u2013 Time line for the short-circuit test of 9.3.4.1.6 <\/td>\n<\/tr>\n
107<\/td>\nAnnex J (xxx) <\/td>\n<\/tr>\n
108<\/td>\nAnnex K (xxx) <\/td>\n<\/tr>\n
109<\/td>\nAnnex L (normative)Examples of overvoltage category reduction
L.1 General
L.2 Insulation to the surroundings
L.2.1 Circuits connected directly to the supply mains
Figure L.1 \u2013 Basic insulation evaluation for circuits connected directlyto the origin of the installation mains supply
Table L.1 \u2013 Drawing keys <\/td>\n<\/tr>\n
110<\/td>\nL.2.2 Insulation between circuits
Figure L.2 \u2013 Basic insulation evaluation for circuitsconnected directly to the mains supply
Figure L.3 \u2013 Basic insulation evaluation for equipment notpermanently connected to the mains supply <\/td>\n<\/tr>\n
111<\/td>\nFigure L.4 \u2013 Basic insulation evaluation for insulation between circuitsconnected directly to the origin of the installation mains supplyand that are declared galvanically separated
Figure L.5 \u2013 Basic insulation evaluation for insulation between circuits connected directly to the mains supply and that are declared galvanically separated <\/td>\n<\/tr>\n
112<\/td>\nFigure L.6 \u2013 Basic insulation evaluation for insulation between circuits not permanently connected directly to the mains supply and that are declared galvanically separated
Figure L.7 \u2013 Basic insulation evaluation for insulation between circuits connected directly to the origin of the installation mains supply and that are declared galvanically separated where internal SPDs are used <\/td>\n<\/tr>\n
113<\/td>\nFigure L.8 \u2013 Basic insulation evaluation for insulation betweencircuits connected directly to the mains supply and that are declaredgalvanically separated where internal SPDs are used
Figure L.9 \u2013 Basic insulation evaluation for insulation between circuits connected directly to the mains supply and that are declared galvanically separated <\/td>\n<\/tr>\n
114<\/td>\nAnnex M (xxx) <\/td>\n<\/tr>\n
115<\/td>\nAnnex N (normative)Additional requirements and tests for equipmentwith protective separation
N.1 General
N.2 Definitions
N.3 Requirements
N.3.1 Test method for implementing protective impedance <\/td>\n<\/tr>\n
116<\/td>\nN.3.2 Touch current measurement
Figure N.1 \u2013 Protection by means of protective impedance <\/td>\n<\/tr>\n
117<\/td>\nFigure N.2 \u2013 Measuring instrument <\/td>\n<\/tr>\n
118<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Low-voltage switchgear and controlgear – Contactors and motor-starters. Semiconductor motor controllers, starters and soft-starter<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2023<\/td>\n120<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":424980,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[517,2641],"product_tag":[],"class_list":{"0":"post-424974","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-130-20","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\/424974","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\/424980"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=424974"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=424974"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=424974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}