Low Voltage Switchgear and Control Gear
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Transcript of Low Voltage Switchgear and Control Gear
LOW VOLTAGE SWITCHGEAR AND CONTROL GEAR
APPLICABLE STANDARDS
IEC 60715IEC 60529IEC 60269
IEC 61439IEC 60947IEC 61641IEC 60059
Definitions for IEC standards
IEC 61439 - Low-voltage switchgear and control gear assemblies a. Part-1 : General rulesb. Part-2 : Power switchgear and control gear assembliesc. Part-3 : Distribution boards intended to be operated by
ordinary persons (DBO)d. Part-4 : Particular requirements for assemblies for
construction sites (ACS)e. Part-5 : Assemblies for power distribution in public
networksf. Part-6 : Busbar trunking systems (bus ways)
Definitions for IEC standardsIEC 60947 - Low-voltage switchgear and control geara. Part-1 : General rulesb. Part-2 : Circuit-breakersc. Part-3 : Switches, disconnectors, switch-
disconnectors and fuse-combination unitsd. Part-4-1 : Contactors and motor-starters -
Electromechanical contactors and motor-starterse. Part-4-2 : Contactors and motor-starters - AC
semiconductor motor controllers and startersf. Part-4-3 : Contactors and motor-starters - AC
semiconductor controllers and contactors for non-motor loads
Contd….. From previous slide
Definitions for IEC standardsIEC 60947 - Low-voltage switchgear and control geara. Part-5-1 : Control circuit devices and switching elements -
Electromechanical control circuit devicesb. Part-5-2 : Control circuit devices and switching elements -
Proximity switchesc. Part-5-3 : Control circuit devices and switching elements -
Requirements for proximity devices with defined behaviour under fault conditions (PDDB)
d. Part-5-4 : Control circuit devices and switching elements - Method of assessing the performance of low-energy contacts - Special tests
e. Part-5-5 : Control circuit devices and switching elements - Electrical emergency stop device with mechanical latching function
Contd….. From previous slide
Definitions for IEC standardsIEC 60947 - Low-voltage switchgear and control geara. Part 5-6 : Control circuit devices and switching
elements - DC interface for proximity sensors and switching amplifiers
b. Part 5-7 : Control circuit devices and switching elements - Requirements for proximity devices with analogue output
c. Part 5-8 : Control circuit devices and switching elements - Three-position enabling switches
d. Part 5-9 : Control circuit devices and switching elements - Flow rate switches
Contd….. From previous slide
Definitions for IEC standardsIEC 60947 - Low-voltage switchgear and control geara. Part 6-1 : Multiple function equipment - Transfer
switching equipmentb. Part 6-2 : Multiple function equipment - Control and
protective switching devices (or equipment) (CPS)c. Part 7-1 : Ancillary equipment - Terminal blocks for
copper conductorsd. Part 7-2 : Ancillary equipment - Protective conductor
terminal blocks for copper conductorse. Part 7-3 : Ancillary equipment - Safety requirements for
fuse terminal blocksf. Part 7-4 : Ancillary equipment - PCB terminal blocks for
copper conductorsg. Part 8 : Control units for built-in thermal protection (PTC) for
rotating electrical machines
Contd….. From previous slide
Definitions for IEC standardsIEC 60269 – Low Voltage Fuses
a. Part-1 : General requirementsb. Part-2 : Supplementary requirements for fuses for use by
authorized persons (fuses mainly for industrial application) - Examples of standardized systems of fuses A to K
c. Part-3 : Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household or similar applications) - Examples of standardized systems of fuses A to F
d. Part-4 : Supplementary requirements for fuse-links for the protection of semiconductor devices
e. Part-5 : Guidance for the application of low-voltage fusesf. Part-6 : Supplementary requirements for fuse-links for the
protection of solar photovoltaic energy systems
Contd….. From previous slide
Definitions for IEC standardsIEC 61641 - Guide for testing under conditions of arcing due to internal fault
IEC 60059 - IEC standard current ratings
IEC 60715 - Dimensions of low-voltage switchgear and controlgear. Standardized mounting on rails for mechanical support of electrical devices in switchgear and controlgear installations
IEC 60529 - Degrees of protection provided by enclosures (IP Code)
Contd….. From previous slide