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BS EN IEC 60947-4-2:2023 Low-voltage switchgear and controlgear - Contactors and motor-starters. Semiconductor motor controllers, starters and soft-starter, 2023
- undefined
- Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
- Blank Page [Go to Page]
- English [Go to Page]
- CONTENTS
- FOREWORD
- INTRODUCTION
- 1 Scope
- 2 Normative references
- 3 Terms, definitions, symbols and abbreviated terms [Go to Page]
- 3.1 Terms and definitions [Go to Page]
- 3.1.1 Terms and definitions concerning the types of semiconductor motor controllers and starters
- Figures [Go to Page]
- Figure 1 – Semiconductor motor control devices [Go to Page]
- 3.1.2 Terms and definitions concerning semiconductor motor controllers and starters
- 3.1.3 Terms and definitions concerning safety aspects
- 3.1.4 Alphabetical index of terms
- 3.2 Symbols and abbreviated terms
- 4 Classification
- 5 Characteristics of semiconductor motor controllers and starters [Go to Page]
- 5.1 Summary of characteristics
- 5.2 Type of equipment [Go to Page]
- 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
- 5.3 Rated and limiting values for main circuits [Go to Page]
- 5.3.1 Rated voltages
- Figure 2 – Connecting methods [Go to Page]
- 5.3.3 Rated frequency
- 5.3.4 Duty cycle values and sequences
- 5.3.5 Normal load and overload characteristics
- 5.3.6 Rated conditional short-circuit current
- 5.3.7 Semiconductor motor controller power losses
- 5.4 Utilization category [Go to Page]
- 5.4.1 General
- 5.4.2 Assignment of ratings based on the results of tests
- Tables [Go to Page]
- Table 1 – Utilization categories
- 5.5 Control circuits
- 5.6 Auxiliary circuits
- 5.7 Characteristics of relays and releases (overload relays) [Go to Page]
- 5.7.1 Summary of characteristics
- Table 2 – Relative levels of severity [Go to Page]
- 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
- Table 3 – Trip classes of overload relays [Go to Page]
- 5.7.6 Influence of ambient air temperature
- 5.8 Coordination with short-circuit protective devices (SCPD)
- 6 Product information [Go to Page]
- 6.1 Nature of information
- 6.2 Marking
- 6.3 Instructions for installation, operation, maintenance, decommissioning and dismantling
- 6.4 Environmental information
- 7 Normal service, mounting and transport conditions [Go to Page]
- 7.1 Normal service conditions [Go to Page]
- 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
- 8 Constructional and performance requirements [Go to Page]
- 8.1 Constructional requirements [Go to Page]
- 8.1.1 General
- 8.1.2 Materials
- 8.1.3 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
- 8.1.9 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
- Table 19 – Limits for limited energy sources without an over-current protective device
- Table 20 – Limits for limited energy sources with an over-current protective device [Go to Page]
- 8.1.15 Stored charge energy circuit
- 8.1.16 Fault and abnormal conditions
- Table 21 – Limits for limited energy source with current limiting impedance [Go to Page]
- 8.1.17 Short-circuit and overload protection of ports
- 8.2 Performance requirements [Go to Page]
- 8.2.1 Operating conditions
- Table 4 – Limits of operation of time-delay overload relayswhen energized on all poles
- Figure 3 – Thermal memory test
- Table 5 – Limits of operation of three-pole time-delay overload relayswhen energized on two poles only [Go to Page]
- 8.2.2 Temperature-rise
- 8.2.3 Dielectric properties
- Table 6 – Temperature-rise limits for insulated coils in air and in oil [Go to Page]
- 8.2.4 Normal load and overload performance requirements
- Table 7 – Minimum overload current withstand time (Tx) in relationto overload current ratio (X) and correspondingto overload relay trip class (see Table 3)
- Table 8 – Minimum requirements for thermal stability test conditions
- Table 9 – Prospective locked rotor current by utilization categories
- Table 10 – Minimum requirements for overload capability test conditions
- Table 11 – Making and breaking capacity test; making and breaking conditionsaccording to utilization categories for the mechanical switching device [Go to Page]
- 8.2.5 Coordination with short-circuit protective devices
- Table 12 – Conventional operational performance making and breaking conditionsaccording to utilization categories for the mechanical switching device
- 8.3 EMC requirements [Go to Page]
- 8.3.1 General
- 8.3.2 Immunity
- Table 13 – Specific performance criteriawhen EM disturbances are present [Go to Page]
- 8.3.3 Emission
- 9 Tests [Go to Page]
- 9.1 Kinds of tests [Go to Page]
- 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 [Go to Page]
- 9.2.1 General
- 9.2.2 Electrical performance of screwless-type clamping units
- 9.2.3 Ageing test for screwless-type clamping units
- 9.2.4 Limited energy source test
- 9.2.5 Breakdown of components
- 9.2.6 Wire flexing test
- 9.3 Compliance with performance requirements [Go to Page]
- 9.3.1 Test sequences
- 9.3.2 General test conditions
- 9.3.3 Performance under no load, normal load, and overload conditions
- Table 14 – Thermal stability test specifications
- Table 15 – Initial case temperature requirements
- Table 16 – Minimum requirements and conditions for performance testingwith an induction motor load
- Figure 4 – Multiple of current setting limits for ambient air temperaturecompensated time-delay overload relays [Go to Page]
- 9.3.4 Performance under short-circuit conditions
- 9.4 EMC tests [Go to Page]
- 9.4.1 General
- 9.4.2 EMC immunity tests
- 9.4.3 EMC emission tests
- Table 17 – Terminal disturbance voltage limitsfor conducted radio-frequency emission (AC mains power port)
- 9.5 Routine and sampling tests [Go to Page]
- 9.5.1 General
- 9.5.2 Operation and operating limits
- 9.5.3 Dielectric tests
- Table 18 – Radiated emissions test limits
- Annexes [Go to Page]
- Annex A (normative)Marking and identification of terminals [Go to Page]
- A.1 General
- A.2 Marking and identification of terminals of semiconductor controllersand starters [Go to Page]
- 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 – Main circuit terminal markings
- Annex B (xxx)
- Annex C (normative)Coordination at the crossover current betweenthe starter and associated SCPD [Go to Page]
- C.1 General and definitions [Go to Page]
- 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
- C.4 Test procedure and results to be obtained [Go to Page]
- 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 [Go to Page]
- C.5.1 General
- C.5.2 Test for Icd
- C.5.3 Time-current characteristic withstand capability of controllers/starters
- Table C.1 – Test conditions
- Figure C.1 – Examples of time-current withstand characteristic
- Annex D (xxx)
- Annex E (xxx)
- Annex F (informative)Operating capability
- Figure F.1 – Thermal stability test profile
- Figure F.2 – Overload capability test profile
- Figure F.3 – Blocking and commutating capability test profile
- Annex G (informative)Rated operational currents and rated operational powersof switching devices for electrical motors [Go to Page]
- G.1 General
- G.2 Rated operational powers and rated operational currents
- Table G.1 – Rated operational powers and rated operational currents of motors
- Annex H (xxx)
- Annex I (normative)Modified test circuit for short-circuit testingof semiconductor motor controllers and starters
- Figure I.1 – Modified circuit for short-circuit testing of semiconductor devices
- Figure I.2 – Time line for the short-circuit test of 9.3.4.1.6
- Annex J (xxx)
- Annex K (xxx)
- Annex L (normative)Examples of overvoltage category reduction [Go to Page]
- L.1 General
- L.2 Insulation to the surroundings [Go to Page]
- L.2.1 Circuits connected directly to the supply mains
- Figure L.1 – Basic insulation evaluation for circuits connected directlyto the origin of the installation mains supply
- Table L.1 – Drawing keys [Go to Page]
- [Go to Page]
- L.2.2 Insulation between circuits
- Figure L.2 – Basic insulation evaluation for circuitsconnected directly to the mains supply
- Figure L.3 – Basic insulation evaluation for equipment notpermanently connected to the mains supply
- Figure L.4 – Basic insulation evaluation for insulation between circuitsconnected directly to the origin of the installation mains supplyand that are declared galvanically separated
- Figure L.5 – Basic insulation evaluation for insulation between circuits connected directly to the mains supply and that are declared galvanically separated
- Figure L.6 – Basic insulation evaluation for insulation between circuits not permanently connected directly to the mains supply and that are declared galvanically separated
- Figure L.7 – 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
- Figure L.8 – 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 – Basic insulation evaluation for insulation between circuits connected directly to the mains supply and that are declared galvanically separated
- Annex M (xxx)
- Annex N (normative)Additional requirements and tests for equipmentwith protective separation [Go to Page]
- N.1 General
- N.2 Definitions
- N.3 Requirements [Go to Page]
- N.3.1 Test method for implementing protective impedance
- N.3.2 Touch current measurement
- Figure N.1 – Protection by means of protective impedance
- Figure N.2 – Measuring instrument
- Bibliography [Go to Page]
