Electrical

Categories: Electrical
Origin: CSA
Close date: Apr 3, 2020
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Scope:

This clause of Part 1 is replaced by the following.

This International Standard deals with the safety of electric commercial amusement machines and personal service machines, their rated voltage being not more than 250 V for single- phase appliances and 480 V for other appliances.

NOTE 101   Examples of appliances that are within the scope of this standard are

amusement machines:a
tables;
bowling machines;
dartboards;
driving simulators;
gaming machines;
kiddie rides;
laser shooting appliances;
pinball machines;
video games;
personal service machines;
card re-value machines;
currency dispensers;
luggage lockers;
weighing machines;
shoe shining appliances.

As  far  as  is  practicable,  this  standard  deals  with  the  common  hazards  presented  by appliances that are encountered by users and maintenance persons.

NOTE 102   Attention is drawn to the fact that for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be necessary; in many countries, additional requirements are specified by the national authorities responsible for health, for the protection of labour and similar authorities.

NOTE 103   This standard does not apply to

appliances intended exclusively for household use; appliances intended exclusively for industrial purposes;

appliances  intended  to  be  used  in  locations  where  special  conditions  prevail,  such  as  the presence  of  a corrosive or explosive atmosphere (dust, vapour or gas); appliances for washing cars;

dispensing appliances and vending machines (IEC 60335-2-75);

–     appliances within the scope of IEC 60065, such as jukeboxes and household video games;

–     appliances within the scope of IEC 60950-1, such as copying machines, ticket machines and automatic

teller machines;

appliances intended to be used when a trained attendant is present, such as virtual reality systems;

equipment intended exclusively for fairgrounds, such as carousels; self-balancing personal transport devices

 

Categories: Electrical
Origin: CSA
Close date: Apr 3, 2020
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Scope:

This International Standard specifies safety requirements for electric toys that have at least one function dependant on electricity, electric toys being any product designed or intended, whether or not exclusively, for use in play by children under 14 years of age.

NOTE 1 Examples of electric toys also within the scope of this standard are – constructional sets;
– experimental sets;
– functional electric toys (an electric toy that performs and is used in the same way as a product, appliance or installation intended for use by adults, and which may be a scale model of such product, appliance or installation);
– electric toy computers;
– a doll's house having an interior lamp.

Additional requirements for experimental sets are given in Annex A.

Additional requirements for electric toys incorporating optical radiation sources are given in Annex E.

 Measurement methods for electric toys generating electromagnetic fields (EMF) are given in Annex I.

Additional requirements for the safety of remote-controls for electric ride-on toys are given in Annex J.

If the packaging is intended to have play value then it is considered to be part of the electric toy.

This International Standard only covers the safety aspects of electric toys that relate to an electrical function.

NOTE 2 The ISO 8124 series of standards address other aspects of the safety of electric toys. Other horizontal product standards may also apply to electric toys.

This  standard  covers  the  safety  of  electric  toys  taking  power  from  any  source, such as batteries, transformers, solar cells and inductive connections.

NOTE 3 Transformers for toys (IEC 61558-2-7 for linear types or IEC 61558-2-7 and IEC 61558-2-16 for switch mode types), battery chargers (IEC 60335-2-29) and battery chargers for use by children (IEC 60335-2-29 Annex AA:) are not considered to be part of an electric toy even if supplied with an electric toy.

NOTE 4 This standard is not intended to assess the safety of batteries however it does address the safety of the electric toy with the batteries inserted.

This International Standard does not apply to the following products:

– automatic playing machines, whether coin operated or not, intended for public use (IEC 60335-2-82);

– toy vehicles equipped with combustion engines;

– toy steam engines;

– slings and catapults;

– electric decorative robots;

– decorative objects for festivities and celebrations;

– sports equipment, including roller skates, inline skates, and skateboards intended for children with a body mass of more than 20 kg;

– bicycles with a maximum saddle height of more than 435 mm, measured as the vertical distance from the ground to the top of the seat surface, with the seat in a horizontal position and with the seat pillar set to the minimum insertion mark;

– scooters and other means of transport designed for sport or which are intended to be used for travel on public roads or public pathways;

– electrically driven vehicles which are intended to be used for travel on public roads, public pathways, or the pavement thereof;

– aquatic equipment intended to be used in deep water, and swimming learning devices for children, such as swim seats and swimming aids;

– puzzles with more than 500 pieces;

– guns and pistols using compressed gas, with the exception of water guns and water pistols, and bows for archery over 120 cm long;

– products and games using sharp-pointed missiles, such as sets of darts with metallic points;

– functional educational products, such as electric ovens, irons or other functional products operated at a nominal voltage exceeding 24 V which are sold exclusively for teaching purposes under adult supervision;

– fireworks, including percussion caps which are not specifically designed for electric toys;

– products intended for use for educational purposes in schools and other pedagogical contexts under the surveillance of an adult instructor, such as science equipment;

– electronic equipment, such as personal computers and game consoles, used to access interactive software and their associated peripherals, unless the electronic equipment or the associated peripherals are specifically designed for and targeted at children and have a play value on their own, such as specially designed personal computers, key boards, joy sticks or steering wheels;

– interactive software, intended for leisure and entertainment, such as computer games, and their storage media, such as CDs;

– fashion accessories for children which are not for use in play;

– babies soothers;

– personal protective equipment including swimming goggles, sunglasses and other eye protectors as well as bicycle and skateboard helmets;

– products for collectors, provided that the product or its packaging bears a visible and legible indication that it is intended for collectors of 14 years of age and above.

EXAMPLES of this category are

• detailed and faithful scale models,

• kits for the assembly of detailed scale models,

• folk dolls and decorative dolls and other similar articles,

• historical replicas of electric toys, and

• reproductions of real firearms.

– equipment intended to be used collectively in playgrounds;

– amusement machines and personal service machines (IEC 60335-2-82);

– professional electric toys installed in public places (such as shopping centres and railway stations);

– products containing heating elements intended for use under the supervision of an adult in a teaching context;

– portable luminaries for children (IEC 60598-2-10);

– blowers for inflatable activity toys (such as blowers for bouncy castles);

 

Categories: Electrical
Origin: CSA
Close date: Apr 3, 2020
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Scope:

This clause of Part 1 is replaced by the following.

This International Standard deals with the safety of electric warming plates, warming trays and similar appliances intended to keep food or vessels warm, for household and similar purposes, their rated voltage being not more than 250 V.

Appliances intended for normal household and similar use and that may also be used by laymen in shops, in light industry and on farms are within the scope of this standard. However, if the appliance is intended to be used professionally to keep vessels warm or to process food for commercial consumption, the appliance is not considered to be for household and similar use only.

As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account
- persons (including children) whose
   - physical, sensory or mental capabilities; or
   - lack of experience and knowledge
    prevents them from using the appliance safely without supervision or instruction;
- children playing with the appliance.


NOTE 101 Attention is drawn to the fact that - for appliances intended to be used in vehicles or on board ships or in aircraft, additional requirements
may be necessary;
- in many countries additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour and similar authorities.

NOTE 102 This standard does not apply to
- appliances made of flexible material, such as textile material;
- appliances intended exclusively to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas);
- appliances intended exclusively for commercial catering or industrial purposes

Origin: IEC
Close date: May 1, 2020
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Scope:

This part of IEC 60601 applies to the basic safety of hearing aids and hearing aid systems, hereafter also referred to as ME EQUIPMENT or ME SYSTEM.

If a clause or subclause is specifically intended to be applicable to hearing aids only, or to hearing aid systems only, the title and content of that clause or subclause will say so. if that is not the case, the clause or subclause applies both to hearing aids and to hearing aid systems, as relevant.

Hazards inherent in the intended physiological function of hearing aids or hearing aid systems within the scope of this document are not covered by specific requirements in this document except in 201.7.9.2 and 201.9.6.

NOTE See also 4.2 of the general standard.

Accessories to hearing aids in the home healthcare environment (e.g. remote control units, audio streamers, battery chargers, power supplies) can be tested according to the applicable standard, IEC 60065, IEC 60950-1, IEC 62368-1 or other applicable IEC safety standards. Alternatively, the general standard may be applied. Hearing aids do not have a mains part intended for connection to ac supply mains. The connection to the supply mains of a hearing aid system is covered by power supply, charger or other types of accessories.

Accessories with functional connection to a hearing aid may form a hearing aid system. Hearing aid related accessories that are not physically connected to the hearing aid during normal use are not considered to be applied part, because they do not directly contribute to the intended use of the hearing aid.

Wireless programming interfaces are covered by the applicable standard IEC 60065, IEC 60950-1, IEC 62368-1 or other applicable IEC safety standards. Alternatively, the general standard may be applied.

Programming interfaces with wired connection to the hearing aid are covered by the general standard.

NOTE Detachable parts of hearing aids, even if supplied separately (e.g. ear hooks, domes, wax guards etc.), are not considered as accessories, but as component parts.

This document does not apply to:

• Cochlear implants or other implanted hearing aids;
• Bone conduction hearing aids;
• Educational hearing aids (i.e. group hearing aids, auditory trainers etc.);
• The application of a hearing aid for the measurement of hearing levels; IEC 60645-1 applies; – fix installed audio-frequency induction-loop systems or their component parts, as described in IEC 60118-4 and IEC 62489-1;
• The sound generating function of a tinnitus masker.

This document does not address applicable testing for intentional RF radiation of wireless equipment (e.g. maximum radiated output power, modulation bandwidth, etc.).

Origin: IEC
Close date: May 1, 2020
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Scope:

This document applies to the basic safety and essential performance of pulse oximeter equipment intended for use on humans, hereafter referred to as me equipment. This includes any part necessary for normal use, including the pulse oximeter monitor, pulse oximeter probe, and probe cable extender.

These requirements also apply to pulse oximeter equipment, including pulse oximeter monitors, pulse oximeter probes and probe cable extenders, which have been reprocessed.

The intended use of pulse oximeter equipment includes, but is not limited to, the estimation of arterial oxygen haemoglobin saturation and pulse rate of patients in professional healthcare institutions as well as patients in the home healthcare environment and the emergency medical services environment.

This document is not applicable to pulse oximeter equipment intended for use in laboratory research applications nor to oximeters that require a blood sample from the patient.

If a clause or subclause is specifically intended to be applicable to me equipment only, or to me systems only, the title and content of that clause or subclause will say so. If that is not the case, the clause or subclause applies both to me equipment and to me systems, as relevant.

HAZARDS inherent in the intended physiological function of ME EQUIPMENT or ME SYSTEMS within the scope of this document are not covered by specific requirements in this document except in 201.11 and in 7.2.13 and 8.4.1 of the general standard.

NOTE 1 See also 4.2 of the general standard. “The general standard” is IEC 60601‐1:2005+AMD1:2012, Medical electrical equipment – Part 1: General requirements for basic safety and essential performance.

This document can also be applied to ME EQUIPMENT and their accessories used for compensation or alleviation of disease, injury or disability.

This document is not applicable to pulse oximeter equipment intended solely for foetal use.

This document is not applicable to remote or slave (secondary) equipment that displays SpO2 values that are located outside of the patient environment.

NOTE 2 ME EQUIPMENT that provides selection between diagnostic and monitoring functions is expected to meet the requirements of the appropriate document when configured for that function.

This document is applicable to pulse oximeter equipment intended for use under extreme or uncontrolled environmental conditions outside the hospital environment or physician’s office, such as in ambulances and air transport. Additional standards can apply pulse oximeter equipment for those environments of use.

This document is a particular standard in the IEC 60601‐1 and ISO/IEC 80601 series of standards.

Origin: IEC
Close date: May 1, 2020
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Scope:

This part of IEC 80601 applies to the basic safety and essential performance of screening thermographs intended to be used for the individual non-invasive febrile temperature screening of a human under controlled environmental conditions, hereafter referred to as ME EQUIPMENT. This document sets laboratory characterization test limits for the screening thermograph.

NOTE 101 A screening thermograph is intended for screening of a human subject and detection of skin temperature elevated above normal. An elevated skin temperature needs to be followed up by a subsequent temperature measurement using a clinical thermometer (see ISO 80601-2-56 [30]).

NOTE 102 The main part of such equipment is commonly referred to as an infrared camera.

If a clause or subclause is specifically intended to be applicable to ME EQUIPMENT only, or to ME SYSTEMS only, the title and content of that clause or subclause will say so. If that is not the case, the clause or subclause applies both to ME EQUIPMENT and to ME SYSTEMS, as relevant.

Origin: IEC
Close date: May 1, 2020
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Scope

201.1 Scope and object

IEC 60601-1:2005, Clause 1 applies, except as follows:

201.1.1 * Scope

Replacement:

This International Standard specifies particular requirements for the BASIC SAFETY and ESSENTIAL PERFORMANCE of a RESPIRATORY GAS MONITOR (RGM), hereafter referred to as ME EQUIPMENT, intended for CONTINUOUS OPERATION for use with a PATIENT.

This International Standard specifies requirements for

- anaesthetic gas monitoring
- carbon dioxide monitoring, and
- oxygen monitoring.

NOTE 1 An RGM can be either standalone ME EQUIPMENT or integrated into other equipment, e.g. an anaesthetic workstation or a ventilator.

This International Standard is not applicable to an RGM intended for use with flammable anaesthetic agents.

Environmental aspects are addressed in Annex BB.

NOTE 2 Additional aspects of environmental impact are addressed in ISO 14971 and IEC 60601-1-9.

If a clause or subclause is specifically intended to be applicable to ME EQUIPMENT only, or to ME SYSTEMS only, the title and content of that clause or subclause will say so. If that is not the case, the clause or subclause applies both to ME EQUIPMENT and to ME SYSTEMS, as relevant.

HAZARDS inherent in the intended physiological function of ME EQUIPMENT or ME SYSTEMS within the scope of this standard are not covered by specific requirements in this particular standard, except in 7.2.13 and 8.4.1 of the general standard (IEC 60601-1).

NOTE 3 See also 4.2 of the general standard.

201.1.2 Object

Replacement:

The object of this particular standard is to establish particular BASIC SAFETY and ESSENTIAL PERFORMANCE requirements for an RGM (as defined in 201.3.210) and its ACCESSORIES.

NOTE ACCESSORIES are included because the combination of the RGM and the ACCESSORIES needs to be safe. ACCESSORIES can have a significant impact on the BASIC SAFETY and ESSENTIAL PERFORMANCE of an RGM.

Categories: Electrical
Origin: CSA
Close date: May 1, 2020
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Scope:

This part of IEC 61347 specifies particular safety requirements for electronic controlgear for use on d.c. supplies up to 250 V and a.c. supplies up to 1 000 V at 50 Hz or 60 Hz and at an output frequency which can deviate from the supply frequency, associated with LED modules.

Controlgear for LED modules specified in this standard are designed to provide constant voltage or current at SELV or SELV equivalent or higher voltages.Deviations from the pure voltage and current types do not
exclude the gear from this standard.

The annexes of IEC 61347-1 which are applicable according to this Part 2-13 and using the word "lamp" are understood to also comprise LED modules.

Particular requirements for stationary independent SELV controlgear, which are part of the wiring in installations, are given in Annex I.

Performance requirements will be covered by IEC 623841.

Plug-in controlgear, being part of the luminaire, are covered as for built-in controlgear by the additional requirements of the luminaire standard.

Categories: Electrical
Origin: CSA
Close date: May 2, 2020
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1 Scope

1.1 General

This standard specifies the requirements for electric vehicle cables rated up to 1000V AC and DC intended to be part of a cord set carried in the vehicle for connection to a charging station or for permanent or temporary connection to Electric Vehicle Supply Equipment (EVSE) or for connection to the branch circuit supplying the EVSE or vice versa for use in accordance with CSA C22.1, Canadian Electrical Code (CE Code), Part I in Canada, NOM-001-SEDE, La Norma de Instalaciones Electricas (Mexican Electrical Code [MEC]), in Mexico, and NFPA 70, National Electrical Code (NEC), in the United States.

1.2 Products included

This standard covers sunlight and oil resistant electric vehicle cables rated 300V, 600V and 1000V AC and DC, and 60°C, 75°C, 90°C, or 105°C cables meeting the construction requirements for Electric Vehicle cables designated EV, EVE, EVJ, EVJT, EVT, EVJE as appropriate.  These cables may contain data, signal, communications and/or optical fiber cables.  

Categories: Electrical
Origin: CSA
Close date: May 10, 2020
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Scope

1.1    
This Standard applies to extra-low-voltage landscape lighting systems and associated components that are intended for cord-connected, direct plug-in, or permanent connection to a branch circuit of not more than 150 volts-to-ground in accordance with the Canadian Electrical Code, Part I.

1.2    
This Standard only covers extra-low-voltage landscape lighting systems where the maximum output circuit is 300 VA or 25 A, whichever is less, from each of the secondary safety extra-low-voltage circuits (SELV).

1.3    
Extra-low-voltage landscape lighting systems covered by this Standard are intended for gardens, walkways, patio areas, or similar outdoor locations, and for specific indoor locations such as atriums and shopping malls in accordance with the marking on the product.

1.4    
This Standard applies to the following associated components:

(a)     the isolating-type power supply;
(b)     one or more luminaire assemblies of the incandescent, fluorescent, LED, or HID type; and
(c)     Flexible cable and associated connectors intended for use in the secondary circuit.

1.5    
The values given in SI (metric) units are the standard. Where values are given in parentheses, they are for information only.

1.6    
In CSA Standards, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; “may” is used to express an option or that which is permissible within the limits of the standard; and “can” is used to express possibility or capability. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.7
This Standard does not apply to luminaires covered by other CSA standards such as:

Submersible luminaires covered by CSA C22.2 No. 89.

Christmas Tree and Other Decorative Lighting Outfits by CSA C22.2 No. 37

Portable luminaires covered by CSA C22.2 No. 250.4

Categories: Electrical
Origin: CSA
Close date: May 10, 2020
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1 Scope

1.1
This Standard specifies the requirements for three‑phase, pad‑mounted distribution transformers, consisting of a transformer and a cable entrance compartment with provision for separable insulated high‑voltage connectors, intended primarily for operation by electric utilities on three‑phase underground distribution systems having primary voltages as shown in Clause 4.6.

Note: The operation of transformers complying with this Standard by other than an electric utility may be subject to additional requirements by the electrical inspection authority having jurisdiction.

1.2
This Standard applies to three‑phase, 60 Hz, pad‑mounted, liquid‑filled distribution transformers, rated at 3000 kV•A or below, up to 34.5 kV system nominal voltage , and with separable insulated high‑voltage connectors. The transformers are suitable for mounting outdoors on pads without additional protective enclosures.

1.3
This Standard includes voltage ratings, kV•A ratings, certain mechanical characteristics, and test procedures. The Standard also includes the following performance characteristics: energy efficiency (in accordance with CAN/CSA‑C802.1), temperature rise, loading capabilities, audible sound level, and radio influence voltage (RIV).

1.4
When this equipment is intended for operation by other than an electric utility, it shall be the purchaser’s responsibility to ensure that the unit meets the requirements of the appropriate electrical inspection authority.

1.5
This Standard allows for the interchangeability of a dead‑front, pad‑mounted unit by another of the same basic physical size from a different manufacturer for transformers rated 28kV and below, without modifications to cables or pad. This Standard covers terminal arrangements for both radial and loop‑feed systems, including certain minimum dimensions and certain specific dimensions.

1.6
In CSA Standards, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; “may” is used to express an option or that which is permissible within the limits of the standard; and “can” is used to express possibility or capability. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non‑mandatory) to define their application.

 

 

Categories: Electrical
Origin: CSA
Close date: May 24, 2020
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Scope: 
1.1 Scope
This part of IEC 60947 applies to the types of equipment listed in 1.1.1 and 1.1.2 whose main contacts are intended to be connected to circuits the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c.

Starters and/or contactors dealt with in this standard are not normally designed to interrupt short-circuit currents. Therefore, suitable short-circuit protection (see 9.3.4) forms part of the installation but not necessarily of the contactor or the starter.

In this context, this standard gives requirements for:

- contactors associated with overload and/or short-circuit protective devices;
- starters associated with separate short-circuit protective devices and/or with separate shortcircuit and integrated overload protective devices;
- contactors or starters combined, under specified conditions, with their own short-circuit protective devices. Such combinations, e.g. combination starters or protected starters are rated as units.

For circuit-breakers and fuse-combination units used as short-circuit protective devices in combination starters and in protected starters, the requirements of IEC 60947-2 and IEC 60947-3 respectively apply.

Equipment covered by this standard is as follows.

• 1.1DV DC Modification to Clause 1.1:

1.1DV.1 Circuit breakers used as short-circuit protective devices in combination starters and protected starters shall comply with the requirements of Annex DVA, Table DVA.3, Ref. No. 3. IEC 60947-2, does not apply.

1.1DV.2 Disconnect switches shall comply with the requirements of Annex DVA, Table DVA.3, Ref. No 1. The Standard for Low-voltage Switchgear and Controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse combination units, IEC 60947-3, does not apply.

1.1DV.3 Fuses used as short-circuit protective devices in combination and protected starters shall comply with the requirements of Annex DVA, Table DVA.3, Ref. No. 2.

1.1DV.4 Molded case switches in combination with fuses used as short-circuit protective devices in combination starters shall comply with the requirements of Annex DVA, Table DVA.3, Ref. No. 3, and Annex DVA, Table DVA.3, Ref. No. 2.

1.1.1 AC and DC contactors
AC and DC contactors intended for closing and opening electric circuits and, if combined with suitable relays (see 1.1.2), for protecting these circuits against operating overloads which may occur therein.

NOTE For contactors combined with suitable relays and which are intended to provide short-circuit protection, the relevant conditions specified for circuit-breakers (IEC 60947-2) additionally apply.

This standard applies also to the actuators of contactor relays and to the contacts dedicated exclusively to the coil circuit of a contactor.

Contactors or starters with an electronically controlled electromagnet are also covered by this standard.

• 1.1.1DV.1 DC Modify note in 1.1.1 by replacing with the following:

The note reference to IEC 60947-2 does not apply.

1.1.1DV.2 D2 Modification by adding the following to 1.1.1:
This standard also applies to manual controllers.

1.1.2 AC motor-starters
AC 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.

For overload relays for starters, including those based on electronic technology with or without extended functions according to Annex H, the requirements of this standard apply.

1.1.2.1 Direct-on-line (full voltage) a.c. starters Direct-on-line starters intended to start and accelerate a motor to normal speed, to provide means for the protection of the motor and its associated circuits against operating overloads, and to switch off the supply from the motor.

This standard applies also to reversing starters.

1.1.2.2 Reduced voltage a.c. starters
Reduced voltage a.c. starters intended to start and accelerate a motor to normal speed by connecting the line voltage across the motor terminals in more than one step or by gradually increasing the voltage applied to the terminals, to provide means for the protection of the motor and its associated circuits against operating overloads, and to switch off the supply from the motor.

Automatic change-over devices may be used to control the successive switching operations from one step to the others. Such automatic change-over devices are, for example, time-delay contactor relays or specified time all-or-nothing relays, under-current devices and automatic acceleration control devices (see 5.10).

1.1.2.2.1 Star-delta starters
Star-delta starters intended to start a three-phase motor in the star connection, to ensure continuous operation in the delta connection, to provide means for the protection of the motor and its associated circuits against operating overloads, and to switch off the supply from the motor.

The star-delta starters dealt with in this standard are not intended for reversing motors rapidly and, therefore, utilization category AC-4 does not apply.

NOTE In the star connection, the current in the line and the torque of the motor are about one-third of the corresponding values for delta connection. Therefore, star-delta starters are used when the inrush current due to the starting is to be limited, or when the driven machine requires a limited torque for starting.

Figure 1 indicates typical curves of starting current, of starting torque of the motor and of torque of the driven machine.

1.1.2.2.2 Two-step auto-transformer starters
Two-step auto-transformer starters, intended to start and accelerate an a.c. induction motor from rest with reduced torque to normal speed and to provide means for the protection of the motor and its associated circuits against operating overloads, and to switch off the supply from the motor.

This standard applies to auto-transformers which are part of the starter or which constitute a unit specially designed to be associated with the starter.

Auto-transformer starters with more than two steps are not covered by this standard.

The auto-transformer starters dealt with in this standard are not intended for inching duty or reversing motors rapidly and, therefore, utilization category AC-4 does not apply.

NOTE In the starting position, the current in the line and the torque of the motor related to the motor starting with rated voltage are reduced approximately as the square of the ratio (starting voltage):(rated voltage). Therefore, auto-transformer starters are used when the inrush current due to the starting is to be limited or when the driven machine requires a limited torque for starting. Figure 2 indicates typical curves of starting current, of starting torque of the motor and of torque of the driven machine.

1.1.2.3 Rheostatic rotor starters
Starters intended to start an a.c. induction motor having a wound rotor by cutting out resistors previously inserted in the rotor circuit, to provide means for the protection of the motor against operating overloads and to switch off the supply from the motor.

In the case of asynchronous slip-ring motors (wound-rotors), the highest voltage between open slip-rings is not greater than twice the rated insulation voltage of the switching devices inserted in the rotor circuit (see 5.3.1.1.2).

NOTE This requirement is based on the fact that the electric stresses are less severe in the rotor than in the stator and are of short duration.

This standard applies also to starters for two directions of rotation when reversal of connections is made with the motor stopped (see 5.3.5.5). Operations including inching and plugging necessitate additional requirements and are subject to agreement between manufacturer and user.

This standard applies to resistors which are part of the starter or constitute a unit specially designed to be associated with the starter.

1.2 Exclusions
This standard does not apply to:
- d.c. starters;
- star-delta starters, rheostatic rotor starters, two-step auto-transformer starters intended for special applications and 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 ²liquid-vapour² type;
- semiconductor contactors and starters making use of semiconductor contactors in the main circuit;
- rheostatic stator starters;
- contactors or starters designed for special applications;
- auxiliary contacts of contactors and contacts of contactor relays. These are dealt with in IEC 60947-5-1.

1.3 Object
The object of this standard is to state:

a) the characteristics of contactors and starters and associated equipment;
b) the conditions applicable to contactors and starters 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;
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

Categories: Electrical
Origin: CSA
Close date: May 24, 2020
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Scope:
1.1 Scope and object
This standard applies, when required by the relevant product standard, to switchgear and controlgear hereinafter referred to as equipment and intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c.

It does not apply to low-voltage switchgear and controlgear assemblies which are dealt with in IEC 60439.

NOTE – In certain clauses or subclauses of this standard, the equipment covered by this standard is also referred to as device , to be consistent with the text of such clauses or subclauses.

The object of this standard is to state those general rules and requirements which are common to low-voltage equipment as defined in 1.1, including for example:
– definitions;
– characteristics;
– information supplied with the equipment; – normal service, mounting and transport conditions;
– constructional and performance requirements; – verification of characteristics and performance.

Digital inputs and/or digital outputs contained in switchgear and controlgear, and intended to be compatible with programmable controllers (PLCs) are covered by Annex S.

1.1DV.1 D2 Modification to 1.1 by adding the following:

1.1DV.1.1 This equipment is intended for installation in accordance with the national installation codes for use in ordinary locations. See Annex DVB, Table DVB.3, Ref. No. 14

Categories: Electrical
Origin: CSA
Close date: May 24, 2020
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Scope:

1.1 Scope
This part of IEC 60947 applies to the types of equipment listed in 1.1.1 and 1.1.2 whose main contacts are intended to be connected to circuits the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c.

Starters and/or contactors dealt with in this standard are not normally designed to interrupt short-circuit currents. Therefore, suitable short-circuit protection (see 9.3.4) forms part of the installation but not necessarily of the contactor or the starter.

In this context, this standard gives requirements for:

– contactors associated with overload and/or short-circuit protective devices; – starters associated with separate short-circuit protective devices and/or with separate shortcircuit and integrated overload
protective devices; – contactors or starters combined, under specified conditions, with their own short-circuit protective devices. Such combinations, e.g. combination starters or protected starters are rated as units.

For circuit-breakers and fuse-combination units used as short-circuit protective devices in combination
starters and in protected starters, the requirements of IEC 60947-2 and IEC 60947-3 respectively apply.

Equipment covered by this standard is as follows.

1.1DV DC Modification to Clause 1.1:

1.1DV.1 Circuit breakers used as short-circuit protective devices in combination starters and protected
starters shall comply with the requirements of Annex DVA, Table DVA.3, Ref. No. 3. IEC 60947-2, does not apply. 1.1DV.2 Disconnect switches shall comply with the requirements of Annex DVA, Table DVA.3, Ref. No 1.

The Standard for Low-voltage Switchgear and Controlgear – Part 3: Switches, disconnectors, switch-disconnectors and fuse combination units, IEC 60947-3, does not apply.

1.1DV.3 Fuses used as short-circuit protective devices in combination and protected starters shall comply with the requirements of Annex DVA, Table DVA.3, Ref. No. 2.