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BS EN IEC 62271-106:2021

BS EN IEC 62271-106:2021

$215.11

High-voltage switchgear and controlgear – Alternating current contactors, contactor-based controllers and motor-starters

Published By Publication Date Number of Pages
BSI 2021 106
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This part of IEC 62271 applies to AC contactors and/or contactor-based controllers and motorstarters designed for indoor installation and operation at frequencies up to and including 60 Hz on systems having voltages above 1 kV and up to and including 24 kV. This document also includes additional requirements for outdoor installations where the equipment is housed in an additional protective enclosure. It is applicable only to three-pole devices for use in three-phase systems, and single-pole devices for use in single-phase systems. Two-pole contactors and starters for use in single-phase systems are subject to agreement between manufacturer and user. Contactors and/or starters dealt with in this document typically do not have adequate short-circuit interruption capability. In this context, this document gives requirements for: – starters associated with separate short-circuit protective devices; – controllers – contactors combined with short-circuit protective devices (SCPD). Contactors intended for closing and opening electric circuits and, if combined with suitable relays, for protecting these circuits against operating overloads are covered in this document. This document is also applicable to the operating devices of contactors and to their auxiliary equipment. Motor-starters intended to start and accelerate motors to normal speed, to ensure continuous operation of motors, to switch off the supply from the motor and to provide means for the protection of motors and associated circuits against operating overloads are dealt with. Motor-starter types included are: – direct-on-line starters; – reversing starters; – two-direction starters; – reduced kVA (voltage) starters; – auto-transformer starters; – rheostatic starters; – reactor starters. This document does not apply to: – circuit-breaker-based motor-starters; – single-pole operation of multi-pole contactors or starters; – two-step auto-transformer starters designed for continuous operation in the starting position; – unbalanced rheostatic rotor starters, i.e. where the resistances do not have the same value in all phases; – equipment designed not only for starting, but also for adjustment of speed; – liquid starters and those of the “liquid-vapour” type; – semiconductor contactors and starters making use of semiconductor contactors in the main circuit; – rheostatic stator starters; – contactors or starters designed for special applications. This document does not deal with components contained in contactors and contactor-based motor-starters, for which individual specifications exist. NOTE 1 Thermal electrical relays are covered by IEC 60255-149. NOTE 2 High-voltage current-limiting fuses are covered by IEC 60282-1 and IEC 60644. NOTE 3 Metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV are covered by IEC 62271-200. NOTE 4 Disconnectors and earthing switches are covered by IEC 62271-102. NOTE 5 High-voltage switches above 1 kV and less than 52 kV are covered by IEC 62271-103. The object of this document is to state: a) the characteristics of contactors and starters and associated equipment; b) the conditions with which contactors or starters comply with reference to: 1) their operation and behaviour, 2) their dielectric properties, 3) the degrees of protection provided by their enclosures, where applicable, 4) their construction, 5) for controllers, interactions between the various components, for example SCPD co-ordination; c) the tests intended for confirming that these conditions have been met, and the methods to be adopted for these tests; d) the information to be given with the equipment or in the manufacturer’s literature.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 CONTENTS
9 FOREWORD
11 1 Scope
12 2 Normative references
13 3 Terms and definitions
28 4 Normal and special service conditions
29 5 Ratings
30 Tables
Table 1 – Ratings and characteristics
36 Table 2 – Utilization categories
37 Figure 1 – Examples of speed/time curves
38 Figures
42 Table 3 – Characteristics dependent on starter type
43 6 Design and construction
47 7 Type tests
49 Table 4 – Applicable type tests
53 Table 5 – Intermittent duty operating cycles
57 Table 6 – Verification of rated making and breaking capacities – Conditions for making and breaking corresponding to the several utilization categories at rated voltage Ur
60 Table 7 – Relationship between current broken Ic and OFF time
61 Table 8 – Overload current withstand requirements
65 Figure 2 – Representation by two parameters of a prospective TRV of a circuit
Figure 3 – Representation of the specified TRV bya two-parameter reference line and a delay line
66 Figure 4 – Determination of power-frequency recovery voltage
68 Figure 5 – Test duties A and B – preferred earth point
Table 9 – Transient recovery voltage characteristics
69 Figure 6 – Test duties A and B – alternative earth point
Figure 7 – Test duty C – preferred earth point
70 Figure 8 – Test duty C – alternative earth point
71 Figure 9 – Characteristics for determining take-over current
73 Table 10 – Verification of the number of onload operating cycles – Conditions for making and breaking corresponding to the several utilization categories
75 8 Routine tests
77 9 Guide to the selection of contactors and motor-starters for service (informative)
81 10 Information to be given with enquiries, tenders and orders (informative)
83 11 Transport, storage, installation, operating instructions and maintenance
12 Safety
13 Influence of the product on the environment
84 Annexes
Annex A (normative) Identification of test objects
85 Annex B (informative) Determination of the equivalent RMS value of a short-time current during a short-circuit of a given duration
86 Annex C (normative) Method for weatherproofing test for outdoor switchgear and controlgear
87 Annex D (informative) References for auxiliary and control circuit components
88 Annex E (normative) Tolerances on test quantities during tests
Table E.101 – Tolerances on test quantities for type test
93 Annex F (informative) Information and technical requirements to be givenwith enquires, tenders and orders
94 Annex G (informative) List of symbols and abbreviations
Table G.101 – Additional list of symbols and abbreviations
95 Annex H (informative) Electromagnetic compatibility on site
96 Annex I (informative) List of notes concerning certain countries
97 Annex J (informative) Extension of validity type tests
98 Annex K (informative) Exposure to pollution
99 Annex AA (normative) Records and reports of type tests for making, breaking and shorttime current performance
103 Annex BB (normative) Disconnectors and earthing switches used in controllers
Figure BB.1 – Disconnector and earthing switch locations
105 Bibliography

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BS EN IEC 62271-106:2021
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