iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
CLC

EN 60728-1-2:2014

(Main)

Cable networks for television signals, sound signals and interactive services - Part 1-2: Performance requirements for signals delivered at the system outlet in operation

Cable networks for television signals, sound signals and interactive services - Part 1-2: Performance requirements for signals delivered at the system outlet in operation

IEC 60728-1-2:2014 provides the minimum performance requirements to be fulfilled in operation at the system outlet or terminal input and describes the summation criteria for the impairments present in the received signals and those produced by the CATV/MATV/SMATV cable network, including individual receiving systems. It is applicable to cable networks intended for television signals, sound signals and interactive services operating between about 5 MHz and 3 000 MHz. The frequency range is extended to 6 000 MHz for home distribution techniques that replace wired cords with a wireless two way communication inside a room (or a small number of adjacent rooms) that uses the 5 GHz to 6 GHz frequency band. This second edition cancels and replaces the first edition published in 2009, and constitutes a technical revision. It includes the following technical: update of performance requirements in Clause 7 to include those for DVB-T2 signals.

Kabelnetze für Fernsehsignale, Tonsignale und interaktive Dienste - Teil 1-2: Leistungsanforderungen an Signale der Teilnehmeranschlussdose im realen Betrieb

Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs - Partie 1-2: Exigences de performance relatives aux signaux délivrés à la prise terminale en fonctionnement

L'IEC 60728-1-2:2014 décrit les exigences minimales de qualité en fonctionnement des signaux à la prise d'abonné ou à la borne d'entrée du terminal et décrit les critères d'addition des dégradations, celles présentes dans les signaux reçus, et celles produites par le réseau de distribution par câbles CATV/MATV/SMATV, ceci comprenant les systèmes de réception individuels. Elle s'applique aux réseaux de distribution par câbles pour les signaux de télévision, de radiodiffusion sonore et des services interactifs fonctionnant entre environ 5 MHz et 3 000 MHz. La bande de fréquences est étendue à 6 000 MHz pour les techniques de distribution domestique où des cordons filaires sont remplacés par une communication bidirectionnelle sans fil à l'intérieur d'une pièce (ou d'un nombre restreint de pièces adjacentes) utilisant la bande de fréquences de 5 GHz à 6 GHz. Cette deuxième édition annule et remplace la première édition parue en 2009, dont elle constitue une révision technique. Elle inclut les modifications suivantes: mise à jour des exigences de qualité de l'Article 7 afin d'inclure les exigences pour les signaux DVB-T2.

Kabelska omrežja za televizijske in zvokovne signale ter interaktivne storitve - 1-2. del: Tehnične zahteve za signale na izhodu delujočega sistema (IEC 60728-1-2:2014)

Standard določa zahteve in opisuje izvedbene smernice RF-okablenja za dvosmerna domača omrežja. Ta standard se uporablja za katero koli domače omrežje, ki distribuira signale, ki jih posredujejo kabelska omrežja CATV/MATV/SMATV (vključno s posamičnimi sistemi za sprejem) s koaksialnim kabelskim izhodom. Ta standard se uporablja tudi za domača omrežja, pri katerih del razdelilnega omrežja uporablja brezžične povezave, na primer namesto sprejemnega kabla. Ta del standarda IEC 60728 se torej uporablja za radiofrekvenčne kable za dvosmerna domača omrežja z žičnimi kabli ali brezžičnimi povezavami znotraj sobe ter je namenjen predvsem za televizijske in zvokovne signale s frekvenco med približno 5 MHz in 3000 MHz. Frekvenčni razpon se poveča na 6000 MHz pri distribucijskih tehnikah, ki nadomeščajo žične kable z brezžično dvosmerno komunikacijo znotraj sobe (ali manjšega števila sosednjih sob), ki uporablja pas med 5 GHz in 6 GHz.

General Information

Status
Published
Publication Date
28-Aug-2014
Withdrawal Date
10-Apr-2017
ICS
33.120.10 - Coaxial cables. Waveguides
33.160 - Audio, video and audiovisual engineering
35.110 - Networking
Technical Committee
CLC/TC 209 - Cable networks for television signals, sound signals and interactive services
Drafting Committee
IEC/TC 100 - IEC_TC_100
Current Stage
6060 - Document made available - Publishing
Start Date
29-Aug-2014
Completion Date
29-Aug-2014
Ref Project
SIST EN 60728-1-2:2014 - Cable networks for television signals, sound signals and interactive services - Part 1-2: Performance requirements for signals delivered at the system outlet in Operation (IEC 60728-1-2:2014)

Relations

Replaces
EN 60728-1-2:2009 - Cable networks for television signals, sound signals and interactive services - Part 1-2: Performance requirements for signals delivered at the system outlet in operation
Effective Date
29-Jan-2023

Buy Standard

EN 60728-1-2:2014EN 60728-1-2:2014
PreviousNext
Standard
EN 60728-1-2:2014
English language
40 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)


SLOVENSKI STANDARD
01-december-2014
1DGRPHãþD
SIST EN 60728-1-2:2009
.DEHOVNDRPUHåMD]DWHOHYL]LMVNHLQ]YRNRYQHVLJQDOHWHULQWHUDNWLYQHVWRULWYH
GHO7HKQLþQH]DKWHYH]DVLJQDOHQDL]KRGXGHOXMRþHJDVLVWHPD ,(&

&DEOHQHWZRUNVIRUWHOHYLVLRQVLJQDOVVRXQGVLJQDOVDQGLQWHUDFWLYHVHUYLFHV3DUW
3HUIRUPDQFHUHTXLUHPHQWVIRUVLJQDOVGHOLYHUHGDWWKHV\VWHPRXWOHWLQ2SHUDWLRQ
,(&
.DEHOQHW]HIU)HUQVHKVLJQDOH7RQVLJQDOHXQGLQWHUDNWLYH'LHQVWH7HLO
/HLVWXQJVDQIRUGHUXQJHQDQ6LJQDOHGHU7HLOQHKPHUDQVFKOXVVGRVHLPUHDOHQ%HWULHE
,(&
5pVHDX[GHGLVWULEXWLRQSDUFkEOHVSRXUVLJQDX[GHWpOpYLVLRQVLJQDX[GHUDGLRGLIIXVLRQ
VRQRUHHWVHUYLFHVLQWHUDFWLIV3DUWLH([LJHQFHVGHSHUIRUPDQFHUHODWLYHVDX[
VLJQDX[GpOLYUpVjODSULVHWHUPLQDOHHQIRQFWLRQQHPHQW
&(,
Ta slovenski standard je istoveten z: EN 60728-1-2:2014
ICS:
33.060.40 Kabelski razdelilni sistemi Cabled distribution systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60728-1-2

NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2014
ICS 33.120.10; 33.160; 35.110 Supersedes EN 60728-1-2:2009
English Version
Cable networks for television signals, sound signals and
interactive services - Part 1-2: Performance requirements for
signals delivered at the system outlet in Operation
(IEC 60728-1-2:2014)
Réseaux de distribution par câbles pour signaux de Kabelnetze für Fernsehsignale, Tonsignale und interaktive
télévision, signaux de radiodiffusion sonore et services Dienste - Teil 1-2: Leistungsanforderungen an Signale der
interactifs - Partie 1-2: Exigences de performance relatives Teilnehmeranschlussdose im realen Betrieb
aux signaux délivrés à la prise terminale en fonctionnement (IEC 60728-1-2:2014)
(CEI 60728-1-2:2014)
This European Standard was approved by CENELEC on 2014-04-11. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60728-1-2:2014 E
Foreword
The text of document 100/2246/FDIS, future edition 2 of IEC 60728-1-2, prepared by Technical Area 5
“Cable networks for television signals, sound signals and interactive services” of IEC/TC 100 “Audio,
video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN 60728-1-2:2014.

The following dates are fixed:
• latest date by which the document has to be (dop) 2015-02-28
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2017-04-11
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60728-1-2:2009.

EN 60728 1-2:2009:
- update of performance requirements in Clause 7 to include those for DVB-T2 signals.

This standard is to be used in conjunction with EN 60728-1:2014.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60728-1-2:2014 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:

IEC 60728-10 NOTE Harmonized as EN 60728-10.

- 3 - EN 60728-1-2:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu
Publication Year Title EN/HD Year

IEC 60050-705 -  International Electrotechnical Vocabulary - -
(IEV) -
Chapter 705: Radio wave propagation
IEC 60050-712 -  International Electrotechnical Vocabulary - -
(IEV) -
Chapter 712: Antennas
IEC 60050-725 -  International Electrotechnical Vocabulary - -
(IEV) -
Chapter 725: Space radiocommunications
IEC 60728-1 2014 Cable networks for television signals, EN 60728-1 2014
sound signals and interactive services -
Part 1: System performance of forward
paths
IEC 60728-1-1 2014 Cable networks for television signals EN 60728-1-1 2014
sound signals and interactive services -
Part 1-1: RF cabling for two way home
networks
IEC 60728-3 2010 Cable networks for television signals, EN 60728-3 2011
sound signals and interactive services -
Part 3: Active wideband equipment for
cable networks
IEC 60966-2-4 -  Radio frequency and coaxial cable EN 60966-2-4 -
assemblies -
Part 2-4: Detail specification for cable
assemblies for radio and TV receivers -
Frequency range 0 MHz to 3 000 MHz,
IEC 61169-2 connectors
IEC 60966-2-5 -  Radio frequency and coaxial cable EN 60966-2-5 -
assemblies -
Part 2-5: Detail specification for cable
assemblies for radio and TV receivers -
Frequency range 0 MHz to 1 000 MHz,
IEC 61169-2 connectors
Publication Year Title EN/HD Year

IEC 60966-2-6 - Radio frequency and coaxial cable EN 60966-2-6 -
assemblies -
Part 2-6: Detail specification for cable
assemblies for radio and TV receivers -
Frequency range 0 MHz to 3 000 MHz,
IEC 61169-24 connectors
ITU-R -  Methodology for the subjective assessment - -
Recommendation of the quality of television pictures
BT.500
ITU-R -  Subjective quality of television pictures in - -
Recommendation relation to the main impairments of the
BT.654 analogue composite television signal
ITU-R -  Radio-frequency protection ratios for AM - -
Recommendation vestigial sideband terrestrial television
BT.655 systems interfered with by unwanted
analogue vision signals and their
associated sound signals
ITU-T -  Transmission performance of television - -
Recommendation circuits designed for use in international
J.61 connections
ITU-T -  Insertion of test signals in the field-blanking - -
Recommendation interval of monochrome and colour
J.63 television signals
ETSI EN 300 421 -  Digital Video Broadcasting (DVB): Framing - -
structure, channel coding and modulation
for 11/12 GHz satellite services
ETSI EN 300 429 -  Digital Video Broadcasting (DVB): Framing - -
structure, channel coding and modulation
for cable systems
ETSI EN 300 473 -  Digital Video Broadcasting (DVB): Satellite - -
Master Antenna Television (SMATV)
distribution systems
ETSI EN 300 744 -  Digital Video Broadcasting (DVB): Framing - -
structure, channel coding and modulation
for digital terrestrial television
ETSI EN 302 307 -  Digital Video Broadcasting (DVB);Second - -
generation framing structure, channel
coding and modulation systems for
Broadcasting, Interactive Services, News
Gathering and other broadband satellite
applications (DVB-S2)
ETSI EN 302 755 -  Digital Video Broadcasting (DVB); Frame - -
structure channel coding and modulation
for a second generation digital terrestrial
television broadcasting system (DVB-T2)

IEC 60728-1-2 ®
Edition 2.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Cable networks for television signals, sound signals and interactive services –

Part 1-2: Performance requirements for signals delivered at the system outlet in

operation
Réseaux de distribution par câbles pour signaux de télévision, signaux de

radiodiffusion sonore et services interactifs –

Partie 1-2: Exigences de performance relatives aux signaux délivrés à la prise

terminale en fonctionnement
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX W
ICS 33.120.10; 33.160; 35.110 ISBN 978-2-8322-1436-7

– 2 – IEC 60728-1-2:2014 © IEC 2014
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, symbols and abbreviations . 10
3.1 Terms and definitions . 10
3.2 Abbreviations . 17
4 Methods of measurement . 18
5 Subjective quality of television pictures in relation to the main impairments of the
analogue composite television signal . 19
5.1 Subjective quality scale. 19
5.2 Subjective quality and objective parameters . 20
6 Summation of the impairments . 23
6.1 Impairments to be summed . 23
6.2 Summation laws . 23
6.2.1 General . 23
6.2.2 Voltage addition . 23
6.2.3 Power addition . 24
6.3 Examples . 24
7 Performance requirements in operation . 24
7.1 General . 24
7.2 Impedance . 25
7.3 Performance requirements at the terminal input . 25
7.3.1 Definition . 25
7.3.2 Signal level . 25
7.3.3 Other parameters . 25
7.4 Performance requirements at system outlets . 25
7.4.1 Minimum and maximum carrier levels . 25
7.4.2 Mutual isolation between system outlets . 26
7.4.3 Isolation between individual outlets in one household . 26
7.4.4 Isolation between forward and return path . 26
7.4.5 Long-term frequency stability of distributed carrier signals at
any system outlet. 26
7.4.6 Carrier level differences at system outlet . 26
7.4.7 Frequency response within a television channel . 26
7.4.8 Random noise at system outlet . 26
7.4.9 Interference to television channels. 29
Annex A (normative) RF ca
...

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 60335-2-39:2024(Main)
Household and similar electrical appliances - Safety - Part 2-39: Particular requirements for commercial electric multi-purpose cooking pans
kSIST FprEN 60335-2-39:2012

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 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 60335-2-40:2024/A11:2024(Amendment)
Household and similar electrical appliances - Safety - Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers
kSIST prEN IEC 60335-2-40:2023/kFprAA:2024

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 60335-2-40:2024(Main)
Household and similar electrical appliances - Safety - Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers
kSIST FprEN IEC 60335-2-40:2024

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 60704-2-10:2024(Main)
Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-10: Particular requirements for ranges, ovens, steam ovens, grills and microwave ovens
SIST EN IEC 60704-2-10:2024

IEC 60704-2-10:2024 applies to ranges, ovens, steam ovens, grills and microwave ovens for household and similar use. This document does not apply to hobs. This document does not apply to appliances or parts of appliances that use gas energy. Requirements for the declaration of noise emission values are not within the scope of this document. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) alignment with the fourth edition of IEC 60704-1:2021; b) alignment with IEC 60350-1:2023 regarding the definitions and settings; c) introduction of the measurement of the steam function; d) revision of settings and test parameters. This document is intended to be used in conjunction with IEC 60704-1:2021, Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements.

  • Standard
    16 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CLC
EN IEC 62271-211:2024(Main)
High-voltage switchgear and controlgear - Part 211: Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kV
SIST EN IEC 62271-211:2024

IEC 62271-211:2024 is applicable to single- and three-phase direct connections between gas-insulated metal-enclosed switchgear (GIS) for rated voltages above 52 kV and transformer arrangements to establish electrical and mechanical interchange ability and to determine the limits of supply for the transformer connection. This second edition cancels and replaces the first edition of IEC 62271-211:2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) re-numbering of clauses according to IEC 62271-1:2017, b) Clause 3: updating definition about bushing (3.1), updating some pressure definitions (3.6, 3.7, 3.8, 3.9), rewording definition about proctor density (3.11), new term very-fast-front overvoltage (3.12), c) Clause 5 (former clause 4): add a subclause 5.1 General, according to IEC 62271-1:2017 and IEC 62271-203:2022, 1) subclause 5.5: new first paragraph, rewording second paragraph, 2) subclause 5.8: modify the term "Rated duration of thermal short-time current" of the bushing, d) Clause 6 (former Clause 5): restructure and rewording of subclauses: 1) 6.1 (former 5.3): requirements about gas and vacuum tightness of the transformer bushing 2) 6.3 (former 5.2): harmonization with IEC 62271-203:2022 about typical maximum pressure in service for SF6, other gases and gas mixtures, 3) 6.4 (former 5.8), rewording 4) 6.5 (former 5.1), some rewording and modification 5) 6.6 (former 5.4), some rewording, updated references 6) 6.7 (former 5.5), some rewording 7) 6.8 (former 5.6), some rewording 8) 6.9 (former 5.7), slight rewording, e) Clause 7 (former clause 6) type tests: some rewording and clarifications about references, f) Clause 8 (former clause 7) routine tests: 1) 8.2 (former 7.2): add a paragraph about SF6-mixtures and other gases than SF6, 2) 8.3 (former 7.3): update reference to relevant on-site test according to IEC 62271‑203:2022, g) Clause 9 Guide to the selection of switchgear and controlgear (new): informative, to have a reference to IEC 62271-203:2022, h) Clause 11 (former 10): updated headline and updated reference according to IEC 62271‑1:2017, i) new Clauses 12 Safety and 13 Environmental aspects: Adding of references to safety and environmental aspects, j) correction of errors in Corrigendum 2 of IEC 62271-211:2017, k) modified orientation of Figure 1 to Figure 4 for easier reading of the tables.

  • Standard
    28 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
kSIST FprEN 50156-1:2024

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 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.

  • Draft
    89 pages
    English language
    sale 10% off
    e-Library read for
    1 day