iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
CLC

EN 60420:1993

(Main)

High-voltage alternating current switch-fuse combinations

High-voltage alternating current switch-fuse combinations

This standard applies to three-pole units for public and industrial distribution systems which are functional assemblies of switches including switch-disconnectors and current-limiting fuses and thus able to interrupt: -any load current up to the rated breaking current of the switch; -any over-current up to the rated short-circuit breaking current of the combination by which automatic interruption is initiated. This standard applies to combinations designed with rated voltages above 1 kV and below 52 kV for use on three-phase alternating current systems of either 50 Hz or 60 Hz.

Hochspannungs-Latschalter-Sicherungs-Kombination

Combinés interrupteurs-fusibles à haute tension pour courant alternatif

S'applique aux appareils tripolaires utilisés dans les réseaux de distribution publics ou les installations industrielles, appareils formant des ensembles fonctionnels composés d'interrupteurs ou d'interrupteurs-sectionneurs et de fusibles limiteurs de courant, et ainsi capables d'interrompre: - tout courant de charge jusqu'au pouvoir de coupure assigné de l'interrupteur; - toute surintensité jusqu'au pouvoir de coupure assignée du combiné et qui provoque une interruption automatique. S'applique aux combinés prévus pour des tensions assignées supérieures à 1 kV et inférieures à 52 kV, et destinés à être utilisés sur des réseaux triphasés à courant alternatif à 50 Hz ou 60 Hz.

High voltage alternating current switch-fuse combinations (IEC 420:1990)

General Information

Status
Withdrawn
Publication Date
29-Aug-1993
Withdrawal Date
31-Mar-1994
Technical Committee
CLC/TC 17AC - High-voltage switchgear and controlgear
Drafting Committee
IEC/SC 17A - IEC_SC_17A
Parallel Committee
IEC/SC 17A - IEC_SC_17A
Current Stage
9960 - Withdrawal effective - Withdrawal
Start Date
01-Oct-2005
Completion Date
01-Oct-2005
Ref Project
SIST EN 60420:1995 - High-voltage alternating current switch-fuse combinations

Relations

Replaced By
EN 62271-105:2003 - High-voltage switchgear and controlgear - Part 105: Alternating current switch-fuse combinations
Effective Date
29-Jan-2023

Buy Standard

EN 60420:1995EN 60420:1995
PreviousNext
Standard
EN 60420:1995
English language
59 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)


SLOVENSKI STANDARD
01-december-1995
High voltage alternating current switch-fuse combinations (IEC 420:1990)
High-voltage alternating current switch-fuse combinations
Hochspannungs-Latschalter-Sicherungs-Kombination
Combinés interrupteurs-fusibles à haute tension pour courant alternatif
Ta slovenski standard je istoveten z: EN 60420:1993
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

CLC
EN IEC 60034-9:2024(Main)
Rotating electrical machines - Part 9: Noise limits
SIST EN IEC 60034-9:2025

IEC 60034-9:2021 specifies test methods for the determination of sound power level of rotating electrical machines and specifies maximum A-weighted sound power levels for factory acceptance testing of network-supplied, rotating electrical machines in accordance with lEC 60034-1, having methods of cooling according to lEC 60034-6 and degrees of protection according to lEC 60034-5, and having the following characteristics: - standard design, either AC or DC, without additional special electrical, mechanical, or acoustical modifications intended to reduce the sound power level - rated output from 1 kW (or kVA) up to and including 5 500 kW (or kVA) - rated speed not greater than 3 750 min–1 This fifth edition cancels and replaces the fourth edition, published in 2003 and its amendment 1, published in 2007. This edition includes the following significant technical changes with respect to the previous edition: a) In Table 2 and Table 3 cooling methods IC01, IC11, IC21 and IC31, IC71, IC81 are now covered. b) This edition adds Table 3 for 60 Hz machines, whereas Table 2, which covers only 50 Hz machines, has no change in levels. c) In Table 3, grade A is added to harmonize the highest levels seen in IEC and NEMA, whereas grade B was added to harmonize the lowest, more restrictive levels seen in IEC and NEMA. d) The clause “Determination of noise increments caused by converter supply” has been shifted to Annex B and renamed “Information on typical noise increments caused by converter supply”.

  • Draft
    20 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CLC
EN IEC 60034-12:2024(Main)
Rotating electrical machines - Part 12: Starting performance of single-speed three-phase cage induction motors
SIST EN IEC 60034-12:2025

IEC 60034-12:2024 is available as IEC 60034-12:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60034-12:2024 specifies the parameters for eight designs of starting performance of single-speed three-phase 50 Hz or 60 Hz cage induction motors in accordance with IEC 60034‑1 that: - have a rated voltage up to 1 000 V; - are intended for direct-on-line or star-delta starting; - are rated on the basis of duty type S1; - are constructed to any degree of protection as defined in IEC 60034-5 and explosion protection. This document also applies to dual voltage motors provided that the flux saturation level is the same for both voltages. This fourth edition cancels and replaces the third edition published in 2016. Aligned with the requirements for explosion protected motors from TC31 WG27 - new clause on methods for measuring locked-rotor current and torque; - new informative annex on the general current and torque characteristics with locked rotor; - new informative annex on correction of voltage and frequency; - aligned with the requirements for explosion protected motors from TC31 WG27.

  • Draft
    20 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CLC
EN IEC 60335-2-39:2024(Main)
Household and similar electrical appliances - Safety - Part 2-39: Particular requirements for commercial electric multi-purpose cooking pans
SIST EN IEC 60335-2-39:2025

IEC 60335-2-39:2012 deals with the safety of electrically operated commercial multi-purpose cooking pans not intended for household and similar use, their rated voltage being not more than 250 V for single-phase appliances connected between one phase and neutral and 480 V for other appliances. This standard also deals with pressurized appliances and appliances with pressurized parts. These appliances are used for processing food for commercial consumption, for example in kitchens of restaurants, canteens, hospitals and in commercial enterprises such as bakeries, butcheries, etc. The electrical part of appliances making use of other forms of energy is also within the scope of this standard. As far as is practicable, this standard deals with the common hazards presented by these types of appliances. 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. The principal changes in this edition as compared with the fifth edition of IEC 60335-2-39 are as follows (minor changes are not listed): - addition to definition of portable appliances, atmospheric multi-purpose cooking and rated pressure; - deletion of equipotential symbol 5021 of IEC 60417 covered by Part 1; - addition of instructions for multi-purpose cooking pans; - modification on leakage current permissible for portable class l appliances; - addition to abnormal test requirements; - addition to mechanical hazard test for multi-purpose cooking pans; - addition of construction test for multi-purpose cooking pans; - addition to construction requirements for lids and theirs grips; - addition to construction requirements for positioning of pressure reliefs; - addition to construction's fixed appliances which are moved forward and backward for cleaning purposes.
The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves for conducting new or revised tests. It is the recommendation of the committee that the content of this publication be adopted for implementation nationally not earlier than 12 months or later than 36 months from the date of publication. Keywords: Multi-purpose cooking pans.

  • Draft
    21 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CLC
EN IEC 60335-2-40:2024(Main)
Household and similar electrical appliances - Safety - Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers
SIST EN IEC 60335-2-40:2025

This European Standard deals with the safety of electric heat pumps, sanitary hot water heat pumps and air conditioners, incorporating motor-compressors as well as hydronic fan coils units, dehumidifiers (with or without motor-compressors), thermoelectric heat pumps and partial units. Their maximum rated voltage being not more than 300 V for single phase appliances and 600 V for multi-phase appliances. Appliances not intended for normal household use but which nevertheless can be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard.

  • Draft
    158 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CLC
EN IEC 60335-2-40:2024/A11:2024(Amendment)
Household and similar electrical appliances - Safety - Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers
SIST EN IEC 60335-2-40:2025/A11:2025

This European Standard deals with the safety of electric heat pumps, sanitary hot water heat pumps and air conditioners, incorporating motor-compressors as well as hydronic fan coils units, dehumidifiers (with or without motor-compressors), thermoelectric heat pumps and partial units. Their maximum rated voltage being not more than 300 V for single phase appliances and 600 V for multi-phase appliances. Appliances not intended for normal household use but which nevertheless can be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard.

  • Draft
    22 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CLC
EN IEC 60034-11:2024(Main)
Rotating electrical machines - Part 11: Thermal protection
SIST EN IEC 60034-11:2025

IEC 60034-11:2020 is available as IEC 60034-11:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60034-11:2020 specifies requirements relating to the use of thermal protectors and thermal detectors incorporated into the stator windings or placed in other suitable positions in induction machines in order to protect them against serious damage due to thermal overloads. It applies to single-speed three-phase 50 Hz or 60 Hz cage induction motors in accordance with IEC 60034-1 and IEC 60034-12 that: - have a rated voltage up to 1 000 V; - are intended for direct-on-line or star-delta starting. The main changes with respect to the previous edition are: - the additional specification of winding temperature limits for temperature class 200 (N), - the increased limits of maximum winding temperatures for overloads with rapid variation, - the clarification that the motor winding may be permanently damaged after it has been exposed to temperatures - a clarification of the definition of indirect thermal protection, - a clarification on the test methods for larger motors.

  • Draft
    13 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CLC
EN IEC 60308:2024(Main)
Hydraulic turbines - Testing of governing systems
SIST EN IEC 60308:2024

IEC 60308:2024 deals with the definition and the characteristics of control systems. It is not limited to the actual controller tasks but also includes other tasks which may be assigned to a control system, such as sequence control tasks, safety and provision for the actuating energy. The following systems are included, speed, power, opening, water level and flow control for all turbine types; electronic, electrical and fluid power devices; safety devices as well as start-up and shutdown devices. The significant technical changes introduced by the third edition are the adoption of parts of IEC 61362:2024 which deal with test matters and the introduction of new technical aspects.

  • Standard
    81 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CLC
EN 50156-1:2024(Main)
Electrical equipment for furnaces and ancillary equipment - Part 1: Requirements for application design and installation
SIST EN 50156-1:2025

This document applies to the application design and installation of electrical equipment, control circuits and safety-related systems for furnaces which are operated with solid, liquid or gaseous fuels and their ancillary equipment. It specifies requirements to meet the operating conditions of furnaces, to reduce the hazards of combustion and to protect the heated systems from damage e.g. by overheating. Such furnaces and the electrical equipment can be part by way of example of the following plant: a) water heating systems; b) steam boiler installations (steam and hot-water boilers) and heat recovery steam boilers; NOTE 1 The requirements of this document apply according to the electrical equipment of electrically heated steam boilers. NOTE 2 Seagoing vessels and offshore facilities are governed by International Maritime Law and as such are not within the scope of this document. These requirements can be used for such facilities. c) warm air heaters; d) hot-gas heaters; e) heat exchanger systems; f) combustion chambers of stationary turbines; g) as long as no other standard is applicable for combined heat and power stations, we recommend the use of the requirements of this document; This document can also be used as reference for electrical equipment requirements for thermo-processing equipment. The requirements in this document are not applicable to electrical equipment for: 1) non-electrically heated appliances and burner control systems for household and similar purposes; 2) furnaces using technologies for the direct conversion of heat into electrical energy; 3) combustion chambers of non-stationary prime movers and turbines; 4) central oil supply systems for individual heating appliances; 5) furnaces using solid fuels for heating purposes for household use with a nominal thermal output up to 1 MW; 6) furnaces which are used to heat process fluids and gasses in chemical plant. This document can be used as a basis for the requirements placed on electrical equipment for furnaces, which are excluded from its field of application. This document specifies special requirements for the management of functional safety.

  • Draft
    101 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CLC
EN IEC 60384-14:2023/AC:2024-11(Corrigendum)
Fixed capacitors for use in electronic equipment - Part 14: Sectional specification - Fixed capacitors for electromagnetic interference suppression and connection to the supply mains
SIST EN IEC 60384-14:2023/AC:2024
  • Corrigendum
    7 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CLC
EN IEC 62841-2-6:2020/AC:2024-11(Corrigendum)
Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 2-6: Particular requirements for hand-held hammers
SIST EN IEC 62841-2-6:2020/AC:2024
  • Corrigendum
    3 pages
    English language
    sale 10% off
    e-Library read for
    1 day