SIST EN 61377-1:2006
(Main)Railway applications - Rolling stock -- Part 1: Combined testing of inverter-fed alternating current motors and their control system
Railway applications - Rolling stock -- Part 1: Combined testing of inverter-fed alternating current motors and their control system
This part of IEC 61377 applies to the combinations of motor(s), inverter and their control system, and its object is to specify: - the performance characteristics of electric drives consisting of an inverter, alternating current motors, and the related control system; - methods of verifying these performance characteristics by tests. Two categories of combined systems can be considered: a) alternating current motors fed from an inverter without any control between the mechanical output (torque, speed) and the inverter itself (mostly auxiliary motors, for example cooling fan motors). The motor works exactly as if it were fed from a busbar (at variable frequency and voltage or not); b) alternating current motor(s) (paralleled or not) with a control between the mechanical output and the inverter. The first category of systems is tested according to IEC 60349-2 and IEC 61287-1. This standard applies to the second category, mainly traction drives. IEC 60349-2 applies to convertor-fed alternating current motors, IEC 61287-1 to power electronic convertors, IEC 60571 to electronic equipments, and this standard applies to the combination of motor(s), inverter, and their control system. As a consequence, IEC 60349-2 describes the tests to demonstrate the compliance of the motor to its specification, IEC 61287-1 does the same for the inverter. It is self-evident that some of the tests mentioned in this standard generally may replace the corresponding ones described in the abovementioned standards. An agreement should be reached between the parties to avoid the duplication of tests. A complete combined test is heavy, and often requires high power, which is not always available in a workshop. An agreement between user and manufacturer may be reached to allow testing either in the workshop or on the vehicle. Testing may be split off partially in a workshop and partially on track. At the time of drafting this standard, only the following combinations of motors and inverters were used for traction applications, but it may also apply to other combinations which may be used in the future: - asynchronous motors fed by voltage stiff (voltage source) inverter; - asynchronous motors fed by current stiff (current source) inverter; - synchronous motors fed by current stiff (current source) inverter. The input of these inverters can be a d.c. supply line, a rectifier, a chopper, an input convertor, a diesel generator with integrated rectifiers, etc.
Bahnanwendungen - Bahnfahrzeuge -- Teil 1: Kombinierte Prüfung von wechselrichtergespeisten Wechselstrommotoren und deren Steuerung
Applications ferroviaires - Matériel roulant -- Partie 1: Essais combinés de moteurs à courant alternatif alimentés par onduleur et de leur régulation
Spécifie les caractéristiques de performances des transmissions électriques constituées par un onduleur, des moteurs à courant alternatif et leur système de régulation; fournit des méthodes de vérification de ces caractéristiques de performances par des essais.
Železniške naprave – Vozna sredstva – 1. del: Kombinirano preskušanje razsmerniško napajanih izmeničnih motorjev in njihovega krmiljenja (IEC 61377-1:2006)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 61377-1:2006
01-september-2006
1DGRPHãþD
SIST EN 61377:1998
äHOH]QLãNHQDSUDYH±9R]QDVUHGVWYD±GHO .RPELQLUDQRSUHVNXãDQMH
UD]VPHUQLãNRQDSDMDQLKL]PHQLþQLKPRWRUMHYLQQMLKRYHJDNUPLOMHQMD ,(&
Railway applications - Rolling stock -- Part 1: Combined testing of inverter-fed alternating
current motors and their control system
Bahnanwendungen - Bahnfahrzeuge -- Teil 1: Kombinierte Prüfung von
wechselrichtergespeisten Wechselstrommotoren und deren Steuerung
Applications ferroviaires - Matériel roulant -- Partie 1: Essais combinés de moteurs à
courant alternatif alimentés par onduleur et de leur régulation
Ta slovenski standard je istoveten z: EN 61377-1:2006
ICS:
29.160.30 Motorji Motors
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
SIST EN 61377-1:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 61377-1:2006
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SIST EN 61377-1:2006
EUROPEAN STANDARD
EN 61377-1
NORME EUROPÉENNE
March 2006
EUROPÄISCHE NORM
ICS 45.060 Supersedes EN 61377:1996
English version
Railway applications -
Rolling stock
Part 1: Combined testing of inverter-fed alternating current motors
and their control system
(IEC 61377-1:2006)
Applications ferroviaires - Bahnanwendungen -
Matériel roulant Bahnfahrzeuge
Partie 1: Essais combinés de moteurs Teil 1: Kombinierte Prüfung
à courant alternatif alimentés par onduleur von wechselrichtergespeisten
et de leur régulation Wechselstrommotoren
(CEI 61377-1:2006) und deren Steuerung
(IEC 61377-1:2006)
This European Standard was approved by CENELEC on 2006-03-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61377-1:2006 E
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SIST EN 61377-1:2006
EN 61377-1:2006 - 2 -
Foreword
The text of document 9/904/FDIS, future edition 1 of IEC 61377-1, prepared by IEC TC 9, Electrical
equipment and systems for railways, was submitted to the IEC-CENELEC parallel vote and was approved
by CENELEC as EN 61377-1 on 2006-03-01.
This European Standard supersedes EN 61377:1996 + corrigendum November 1996.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-12-01
– latest date by which the national standards conflicting
(dow) 2009-03-01
with the EN have to be withdrawn
This European Standard makes reference to International Standards. Where the International Standard
referred to has been endorsed as a European Standard or a home-grown European Standard exists, this
European Standard shall be applied instead. Pertinent information can be found on the CENELEC web
site.
__________
Endorsement notice
The text of the International Standard IEC 61377-1:2006 was approved by CENELEC as a European
Standard without any modification.
__________
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SIST EN 61377-1:2006
NORME CEI
INTERNATIONALE
IEC
61377-1
INTERNATIONAL
Première édition
STANDARD
First edition
2006-02
Applications ferroviaires –
Matériel roulant –
Partie 1:
Essais combinés de moteurs à courant alternatif
alimentés par onduleur et de leur régulation
Railway applications –
Rolling stock –
Part 1:
Combined testing of inverter-fed alternating
current motors and their control system
IEC 2006 Droits de reproduction réservés Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
T
PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 3 –
CONTENTS
FOREWORD.5
1 Scope and object.9
2 Normative references .11
3 Terms and definitions .13
4 Environmental conditions.17
5 Combined system characteristics .17
5.1 Specified characteristics.17
5.2 Declared characteristics .21
5.3 Combined system characteristics .21
5.4 Exchange of information and responsibility.31
6 Test categories.31
6.1 General .31
6.2 Type tests .31
6.3 Investigation tests .31
7 Tests .31
7.1 General .31
7.2 Test conditions.33
7.3 Temperature-rise tests .35
7.4 Additional tests for paralleled asynchronous motors .37
7.5 Characteristic tests and tolerances.39
7.6 Miscellaneous tests .41
7.7 Investigation tests .45
Annex A (normative) Agreement between user and manufacturer .47
Figure 1 – Traction drive.9
Figure 2 – Example of measurement points of the d.c. input .19
Figure 3 – Mandatory characteristics – voltage source asynchronous combined system
(two examples) .23
Figure 4 – Mandatory characteristics – voltage source asynchronous combined system .25
Figure 5 – Mandatory characteristics – current source asynchronous combined system.27
Figure 6 – Mandatory characteristics – current source synchronous combined system.29
Figure 7 – Test bed arrangement for back-to-back test of an asynchronous combined
system .35
Figure 8 – Effect of wheel diameter mismatch on the torque characteristic of
asynchronous motors.37
Figure 9 – Example of operating range of a voltage source combined system .43
Table 1 – List of tests .45
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
RAILWAY APPLICATIONS –
ROLLING STOCK –
Part 1: Combined testing of inverter-fed
alternating current motors and their control system
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61377-1 has been prepared by IEC technical committee 9:
Electrical equipment and systems for railways.
This publication cancels and replaces IEC 61377 (1996).
The text of this standard is based on the following documents:
FDIS Report on voting
9/904/FDIS 9/929/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 7 –
The present revision of IEC 61377 (1996) has been done to be editorially and technically
consistent with the Part 2, Chopper-fed direct current traction motors and their control, and
Part 3, Alternating current motors, fed by an indirect convertor, and their control system.
IEC 61377 consists of the following parts, under the general title Railway applications –
Rolling stock:
Part 1: Combined testing of inverter-fed alternating current motors and their control system
Part 2: Combined testing – Chopper-fed direct current traction motors and their control
Part 3: Combined testing of alternating current motors, fed by an indirect convertor, and
their control system
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 9 –
RAILWAY APPLICATIONS –
ROLLING STOCK –
Part 1: Combined testing of inverter-fed
alternating current motors and their control system
1 Scope and object
This part of IEC 61377 applies to the combinations of motor(s), inverter and their control
system, and its object is to specify:
− the performance characteristics of electric drives consisting of an inverter, alternating
current motors, and the related control system;
− methods of verifying these performance characteristics by tests.
Two categories of combined systems can be considered:
a) alternating current motors fed from an inverter without any control between the mechanical
output (torque, speed) and the inverter itself (mostly auxiliary motors, for example cooling
fan motors). The motor works exactly as if it were fed from a busbar (at variable frequency
and voltage or not);
b) alternating current motor(s) (paralleled or not) with a control between the mechanical
output and the inverter.
The first category of systems is tested according to IEC 60349-2 and IEC 61287-1.
This standard applies to the second category, mainly traction drives.
DC +
DC −
Torque, speed
Control
IEC 240/06
Figure 1 – Traction drive
IEC 60349-2 applies to convertor-fed alternating current motors, IEC 61287-1 to power
electronic convertors, IEC 60571 to electronic equipments, and this standard applies to the
combination of motor(s), inverter, and their control system. As a consequence, IEC 60349-2
describes the tests to demonstrate the compliance of the motor to its specification,
IEC 61287-1 does the same for the inverter. It is self-evident that some of the tests mentioned
in this standard generally may replace the corresponding ones described in the above-
mentioned standards. An agreement should be reached between the parties to avoid the
duplication of tests.
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 11 –
A complete combined test is heavy, and often requires high power, which is not always
available in a workshop. An agreement between user and manufacturer may be reached to
allow testing either in the workshop or on the vehicle. Testing may be split off partially in a
workshop and partially on track.
At the time of drafting this standard, only the following combinations of motors and inverters
were used for traction applications, but it may also apply to other combinations which may be
used in the future:
− asynchronous motors fed by voltage stiff (voltage source) inverter;
− asynchronous motors fed by current stiff (current source) inverter;
− synchronous motors fed by current stiff (current source) inverter.
The input of these inverters can be a d.c. supply line, a rectifier, a chopper, an input
convertor, a diesel generator with integrated rectifiers, etc.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendment) applies. .
IEC 60050(411), International Electrotechnical Vocabulary (IEV) – Chapter 411: Rotating
machinery
IEC 60050(551), International Electrotechnical Vocabulary (IEV) – Chapter 551: Power
electronics
IEC 60050(811), International Electrotechnical Vocabulary (IEV) − Chapter 811: Electric
traction
IEC 60349-2:2002, Electric traction – Rotating electrical machines for rail and road vehicles –
Part 2: Electronic convertor-fed alternating current motors
IEC 60571, Electronic equipment used on rail vehicles
IEC 60850, Railway applications – Supply voltage of traction systems
IEC 61287-1:1995, Railway applications – Power convertors installed on board rolling stock −
Part 1: Characteristics and test methods
IEC 61377-2:2002, Railway applications – Rolling stock – Combined testing – Part 2: Chopper-
fed direct current traction motors and their control
IEC 61377-3:2002, Railway applications – Rolling stock – Part 3: Combined testing of
alternating current motors, fed by an indirect convertor, and their control system
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 13 –
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050(411),
IEC 60050(551), IEC 60050(811), IEC 61287-1, IEC 60349-2 and the following apply:
3.1
combined system
unit consisting of the inverter, the motor(s), their related control system, equivalent power
cables connecting them, and an equivalent cooling system
3.2
user
organization which orders the combined system. The user is normally an organization which
uses the vehicle or the equipment, unless the responsibility is delegated to a main contractor
or consultant
3.3
manufacturer
organization which has the technical responsibility for the supply of the combined system
NOTE The manufacturer as defined above may also be the supplier of the motor, of the inverter, of the control, or
of all of them, or of none of them.
3.4
supplier
organization which has the responsibility of one or more of the constituents of the combined
system
User
Manufacturer
Supplier Supplier Supplier
(motor) (control) (inverter)
IEC 241/06
3.5
manufacturer's works
location where tests are generally performed
3.6
duty
statement of the load to which the combined system is subjected, including, if applicable,
electric braking, no load, rest and de-energized periods, including their durations and
sequence in time
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 15 –
3.7
duty cycle of vehicle/load profile
duty cycle of vehicle is the speed and mass of train and track over the time.
The load profile for converter is calculated by the engineering from the duty cycle of vehicle.
Load profile (current/power versus time) is the repetitive cycle or the load current/power under
specified conditions such as starting and braking. Also the voltage has to be considered
3.8
rating of a combined system
combination of simultaneous values of electrical and mechanical quantities, with their duration
and sequence, assigned to the combined system by the manufacturer
3.9
rated value
numerical value of any quantity included in a rating
3.10
continuous rating
mechanical output that the combined system can deliver on the test bed at a given speed for
an unlimited time without exceeding the limits of temperature rise given in IEC 60349-2 and
IEC 61287-1
NOTE Several continuous ratings may be specified.
3.11
short-time rating (for example 1 h)
mechanical output that the combined system can deliver on the test bed at a given speed for
the stated time without exceeding the limits of temperature rise given in Table 2 of IEC 60349-
2 and in IEC 61287-1, starting with the combined system cold, all other requirements of here
mentioned standards being satisfied
3.12
short-time overload rating
mechanical output that the combined system can deliver on the test bed at a given speed for
the stated time. The test is carried out as specified in 8.1.6 of IEC 60349-2, without exceeding
the limits of temperature rise given in Table 3 of IEC 60349-2 and in IEC 61287-1
NOTE Short-time overload ratings are of value in determining the suitability of combined systems for duties which
involve relatively long periods of operation below the continuous rating followed by a period above it. These are
most likely to occur in locomotive applications. They are not relevant to repeated short-load cycles of rapid transit
and similar duties, and should not be specified for such applications.
3.13
intermittent duty rating
duty cycle on which the combined system may be operated without the temperature rise at
any point exceeding the limits given in IEC 60349-2 and IEC 61287-1
3.14
periodic duty rating
periodic duty on which the combined system may be operated without the temperature rise at
any point exceeding the limits given in IEC 60349-2 and IEC 61287-1
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 17 –
4 Environmental conditions
Environmental conditions relative to motor, inverter, and control system are detailed in
IEC 60349-2, IEC 61287-1 and IEC 60571.
5 Combined system characteristics
5.1 Specified characteristics
Combined system specifications shall, as a general rule, include characteristic curves. These
curves are defined as the "specified characteristics". They shall be plotted to the designed
operating limits of each variable. They shall generally be drawn for the d.c. supply voltage of
the traction system at its specified nominal value. They may also be drawn for the lower and
higher voltage of the supply of the traction system if agreed between user and manufacturer.
These characteristics shall be drawn for a reference temperature of the windings of the motor
of 150 °C, and the temperature of the parts of the inverter expected by the supplier.
Figure 2 gives some examples of the points where d.c. voltage and current may be defined in
order to have safe measurement conditions.
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 19 –
V As
A
As
As
V
A
As
As
V
As
A
Sy
V
Sy
A
IEC 242/06
Figure 2 – Example of measurement points of the d.c. input
As an alternative to the torque and speed, the characteristics may show tractive effort at the
wheels and vehicle speed. In which case, the gear ratio, wheel diameter and transmission
losses shall be stated. If conventional values are used for the latter, they shall be in
accordance with Figure B.1 of IEC 60349-2.
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 21 –
The specified characteristics shall be submitted to the user before the order for the combined
system is placed, unless otherwise specified.
The values of the supply voltage of the traction system shall be specified by the user. They
should preferably be the standard values according to IEC 60850.
5.2 Declared characteristics
Characteristic curves obtained from the results of type tests carried out in accordance
with 7.5.
5.3 Combined system characteristics
The specified and declared characteristics of the combined system shown as a function of
speed, over the whole application range are:
a) external characteristics such as the mean mechanical torque, the mean values of the d.c.
input: voltage, current and power of the combined system;
b) internal characteristics such as the root-mean-square value of the output current of the
inverter, the root-mean-square of the fundamental components of the output current and
voltage of the inverter, the slip of asynchronous motors, and the excitation current for
synchronous motors;
c) internal values such as switching transients, which are the point-to-point and point-to-
earth peak voltage, temperatures, etc.
NOTE Internal switching transients are of use to check the dielectric test voltage of the constituents.
If the efficiency is an important parameter, it shall be requested, and this characteristic shall
also be shown. Efficiency is particularly important for combined systems used on
thermal/electric rolling stock, or battery-fed vehicles.
The efficiency characteristic of the combined system shall take into account the motor, the
inverter, the cables and other relevant components.
The measurement of efficiency shall include excitation losses in the case of synchronous
machines.
The characteristics shall be drawn at least for the maximum torque reference (main controller
demand) over the entire speed range of the application, in motoring and braking if electric
braking is proposed.
Only external characteristics, and the maximum internal repetitive switching transients are
mandatory. The other internal characteristics and values shall be measured, but the results
shall not influence the acceptance of the combined system.
Figures 3 to 6 show examples of the most common mandatory curves.
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 23 –
Point 1
Torque
Voltage
Current
Output torque
DC input voltage
DC input current
Speed
IEC 243/06
Figure 3a – Characteristics of a voltage source asynchronous combined system: example 1
Torque Point 1
Voltage
Current
Output torque
DC input voltage
DC input current
Speed
IEC 244/06
Figure 3b – Characteristics of a voltage source asynchronous combined system: example 2
Figure 3 – Mandatory characteristics – voltage source asynchronous combined system
(two examples)
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 25 –
Line-to-line voltage
Line-to-earth voltage
IEC 245/06
Figure 4 – Mandatory characteristics – voltage source asynchronous combined system
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 27 –
Point 1
Torque
Current
Voltage
Output torque
DC input current
DC input voltage
Speed
IEC 246/06
Figure 5a – Characteristics of a current source asynchronous combined system
IEC 247/06
Figure 5b – Line-to-line voltage
IEC 248/06
Figure 5c – Line-to-earth voltage
Figure 5 – Mandatory characteristics – current source asynchronous combined system
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 29 –
Torque
Voltage
Point 1
Current
Output torque
DC input current
DC input voltage
Speed
IEC 249/06
Figure 6a – Characteristics of a current source synchronous combined system
IEC 250/06
Figure 6b – Load communication: line-to-line voltage
IEC 251/06
Figure 6c – Load communication: line-to-earth voltage
IEC 252/06
Figure 6d – Self communication: line-to-line voltage
IEC 253/06
Figure 6e – Self communication: line-to-earth voltage
Figure 6 – Mandatory characteristics – current source synchronous combined system
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SIST EN 61377-1:2006
61377-1 IEC:2006 – 31 –
5.4 Exchange of information and responsibility
IEC 60349-2 and IEC 61287-1 point out the need for the exchange of information between the
motor supplier and the inverter supplier, to ensure that the combined system will meet the
requir
...
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