1 Scope and object
1.1 AC and d.c. contactors
1.2 AC motor-starters
1.2.1 Direct-on-line (full voltage) a.c. starters
1.2.2 Reduced voltage a.c. starters
1.2.3 Rheostatic rotor starters
1.3 This standard does not apply to:
1.4 The object of this standard is to state:
2 Normative references
3 Terms, definitions, symbols and abbreviations
3.1 Definitions concerning contactors
3.2 Definitions concerning starters
3.3 Characteristic quantities
3.3.1 Transient recovery voltage (abbreviation: TRV)
[IEV 441-17-26]
3.4 Symbols and abbreviations
4 Classification
5 Characteristics of contactors and starters
5.1 Summary of characteristics
5.2 Type of equipment
5.2.1 Kind of equipment
5.2.2 Number of poles
5.2.3 Kind of current (a.c. or d.c.)
5.2.4 Interrupting medium (air, oil, gas, vacuum, etc.)
5.2.5 Operating conditions of the equipment
5.3 Rated and limiting values for main circuits
5.3.1 Rated voltages
5.3.2 Currents or powers
5.3.3 Rated frequency
5.3.4 Rated duties
5.3.5 Normal load and overload characteristics
5.3.6 Rated conditional short-circuit current
5.4 Utilization category
5.4.1 Assignment of utilization categories based on the
results of tests
5.5 Control circuits
5.6 Auxiliary circuits
5.7 Characteristics of relays and releases (overload relays)
5.7.1 Summary of characteristics
5.7.2 Types of relay or release
5.7.3 Characteristic values
5.7.4 Designation and current settings of overload relays
5.7.5 Time-current characteristics of overload relays
5.7.6 Influence of ambient air temperature
5.8 Co-ordination with short-circuit protective devices
5.9 Vacant
5.10 Types and characteristics of automatic change-over devices
and automatic acceleration control devices
5.10.1 Types
5.10.2 Characteristics
5.11 Types and characteristics of auto-transformers for two-step
auto-transformer starters
5.12 Types and characteristics of starting resistors for
rheostatic rotor starters
6 Product information
6.1 Nature of information
6.1.1 Identification
6.1.2 Characteristics, basic rated values and utilization
6.2 Marking
6.3 Instructions for installation, operation and maintenance
7 Normal service, mounting and transport conditions
8 Constructional and performance requirements
8.1 Constructional requirements
8.1.1 Materials
8.1.2 Current-carrying parts and their connections
8.1.3 Clearances and creepage distances
8.1.4 Actuator
8.1.5 Indication of the contact position
8.1.6 Additional safety requirements for equipment with
isolating function
8.1.7 Terminals
8.1.8 Additional requirements for contactors or starters
provided with a neutral pole
8.1.9 Provisions for earthing
8.1.10 Enclosures for equipment
8.1.11 Degrees of protection of enclosed contactors and starters
8.2 Performance requirements
8.2.1 Operating conditions
8.2.2 Temperature rise
8.2.3 Dielectric properties
8.2.4 Normal load and overload performance requirements
8.2.5 Co-ordination with short-circuit protective devices
8.2.6 Vacant
8.2.7 Additional requirements for combination starters,
combination switching devices, protected starters and
protected switching devices suitable for isolation
8.3 Electromagnetic compatibility (EMC)
8.3.1 General
8.3.2 Immunity
8.3.3 Emission
9 Tests
9.1 Kinds of test
9.1.1 General
9.1.2 Type tests
9.1.3 Routine tests
9.1.4 Sampling tests
9.1.5 Special tests
9.2 Compliance with constructional requirements
9.3 Compliance with performance requirements
9.3.1 Test sequences
9.3.2 General test conditions
9.3.3 Performance under no load, normal load and overload
conditions
9.3.4 Performance under short-circuit conditions
9.3.5 Overload current withstand capability of contactors
9.3.6 Routine tests and sampling tests
9.4 EMC Tests
9.4.1 General
9.4.2 Immunity
9.4.3 Emission
Annex A (normative) Marking and identification of terminals of
contactors and associated overload relays
Annex B (normative) Special tests
Annex C - Void
Annex D (informative) Items subject to agreement between manufacturer
and user
Annex E (informative) Examples of control circuit configurations
Annex F (normative) Requirements for auxiliary contact linked with
power contact (mirror contact)
Annex G (informative) Rated operational currents and rated operational
powers of switching devices for electrical machines
Annex H (normative) Extended functions within electronic overload
relays
Annex I (informative) AC1 contactors for use with semiconductor
controlled motor loads
Annex ZA (normative) Normative references to international
publications with their corresponding European publications
Bibliography