SIST EN 62246-1:2003
(Main)Reed contacts units -- Part 1: Generic specification
Reed contacts units -- Part 1: Generic specification
Is a generic specification applying to dry and mercury wetted reed contact units of assessed quality. Lists the tests and measurement procedures which may be selected for use in detail specifications for such units. Specifies the quality assessment procedures to be followed.
Reedkontakt-Einheiten -- Teil 1: Fachgrundspezifikation
Contacts à lames souples en enceinte scellée -- Partie 1: Spécification générique
Cette norme existe seulement en langue anglaise.
Reed contacts unit - Part 1: Generic specification
General Information
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Standards Content (Sample)
SLOVENSKI SIST EN 62246-1:2003
STANDARD
april 2003
Reed contacts unit - Part 1: Generic specification
ICS 29.120.70 Referenčna številka
SIST EN 62246-1:2003(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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EUROPEAN STANDARD EN 62246-1
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2002
ICS 29.120.70 Supersedes EN 119000:1996
English version
Reed contacts unit
Part 1: Generic specification
(IEC 62246-1:2002)
Contacts à lames souples Reedkontakt-Einheiten
en enceinte scellée Teil 1: Fachgrundspezifikation
Partie 1: Spécification générique (IEC 62246-1:2002)
(CEI 62246-1:2002)
This European Standard was approved by CENELEC on 2002-07-01. 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, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and 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
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62246-1:2002 E
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EN 62246-1:2002 - 2 -
Foreword
The text of document 94/156/FDIS, future edition 1 of IEC 62246-1, prepared by IEC TC 94,
All-or-nothing electrical relays, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 62246-1 on 2002-07-01.
This European Standard supersedes EN 119000:1996.
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) 2003-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-07-01
Annexes designated "normative" are part of the body of the standard.
In this standard, annexes A, B and ZA are normative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62246-1:2002 was approved by CENELEC as a European
Standard without any modification.
__________
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- 3 - EN 62246-1:2002
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60027 Series Letter symbols to be used in electrical HD 245 Series
technology
IEC 60050 Series International Electrotechnical --
Vocabulary (IEV)
IEC 60068-1 1988 Environmental testing
+ corr. October 1988 Part 1: General and guidance
+ A1 1992 EN 60068-1 1994
IEC 60068-2-1 1990 Part 2: Tests – Tests A: Cold EN 60068-2-1 1993
A1 1993 A1 1993
A2 1994 A2 1994
1)
IEC 60068-2-2 1974 Tests B: Dry heat EN 60068-2-2 1993
A1 1993 A1 1993
A2 1994 A2 1994
2)
IEC 60068-2-3 1969 Test Ca: Damp heat, steady state HD 323.2.3 S2 1987
IEC 60068-2-6 1995 Test Fc: Vibration (sinusoidal)
+ corr. March 1995 EN 60068-2-6 1995
IEC 60068-2-7 1983 Test Ga and guidance: Acceleration,
+ A1 1986 steady state EN 60068-2-7 1993
IEC 60068-2-11 1981 Test Ka: Salt mist EN 60068-2-11 1999
IEC 60068-2-13 1983 Test M: Low air pressure EN 60068-2-13 1999
IEC 60068-2-14 1984 Test N: Change of temperature
+ A1 1986 EN 60068-2-14 1999
IEC 60068-2-17 1994 Test Q: Sealing EN 60068-2-17 1994
1)
EN 60068-2-2 includes supplement A:1976 to IEC 60068-2-2.
2)
HD 323.2.3 S2 includes A1:1984 to IEC 60068-2-3.
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EN 62246-1:2002 - 4 -
Publication Year Title EN/HD Year
IEC 60068-2-20 1979 Test T: Soldering
+ A2 1987 HD 323.2.20 S3 1988
IEC 60068-2-21 1999 Part 2-21: Tests - Test U: Robustness of EN 60068-2-21 1999
terminations and integral mounting
devices
IEC 60068-2-27 1987 Test Ea and guidance: Shock EN 60068-2-27 1993
IEC 60068-2-29 1987 Test Eb and guidance: Bump
+ corr. EN 60068-2-29 1993
IEC 60068-2-30 1980 Test Db and guidance: Damp heat,
+ A1 1985 cyclic (12 + 12 hour cycle) EN 60068-2-30 1999
IEC 60096 Series Radio-frequency cables - -
IEC 60317-1 1990 Specifications for particular types of EN 60317-1 1994
winding wires
Part 1: Polyvinyl acetal enamelled round
copper wire, class 105
A1 1997 A1 1997
A2 1997 A2 1998
IEC 60410 1973 Sampling plans and procedures for--
inspection by attributes
IEC 60617 Series Graphical symbols for diagrams EN 60417 Series
IEC 61810-1 1998 Electromechanical non-specified time EN 61810-1 1998
all-or-nothing relays
Part 1: General requirements
IEC 61811-1 1999 Electromechanical non-specified time EN 61811-1 1999
all-or-nothing relays of assessed quality
Part 1: Generic specification
3)
ISO 1000 - SI units and recommendations for the--
use of their multiples and of certain
other units
ITU-T 1988 Tests on power-fed repeaters using--
Recommendation solid-state devices in order to check the
K.17 arrangements for protection from
external interference
3)
IEC QC 001002 - IEC Quality Assessment System for--
Electronic Components (IECQ) - Rules
of Procedure
3)
Undated reference.
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INTERNATIONAL IEC
STANDARD
62246-1
First edition
2002-04
Reed contact units –
Part 1:
Generic specification
Contacts à lames souples en enceinte scellée –
Partie 1:
Spécification générique
IEC 2002 Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from 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
PRICE CODE
Commission Electrotechnique Internationale
XA
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue
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– 2 – 62246-1 IEC:2002(E)
CONTENTS
FOREWORD.4
1 General .5
1.1 Scope.5
1.2 Normative references .5
1.3 Units, symbols and terminology .7
1.4 Preferred values.14
1.5 Marking .16
1.6 Order of precedence.16
1.7 Precautions regarding mercury (for mercury wetted contact units).16
2 Quality assessment procedures.17
2.1 General .17
2.2 Qualification approval procedures .18
2.3 Quality conformance inspection requirements.18
3 Test and measurement procedures.19
3.1 General .19
3.2 Alternative procedures .19
3.3 Standard conditions for testing .19
3.4 Visual inspection and check of dimensions .20
3.5 Functional tests.20
3.6 Remanence test (see figure 3).22
3.7 Contact circuit resistance .23
3.8 Dielectric test .24
3.9 Insulation resistance .26
3.10 Operate, release, transfer or bridging, and bounce times (see figure 2).26
3.11 Contact sticking.28
3.12 Robustness of terminals .31
3.13 Soldering (solderability and resistance to soldering heat) .31
3.14 Climatic sequence .32
3.15 Damp heat, steady state.33
3.16 Rapid change of temperature .33
3.17 Salt mist.34
3.18 Bump .34
3.19 Vibration.35
3.20 Shock.36
3.21 Acceleration test – Functional test only (applicable to dry reed contact units only) 37
3.22 Sealing.38
3.23 Electrical endurance.38
3.24 Mechanical endurance.45
3.25 Maximum cycling frequency.47
3.26 Mounting position test (for mercury wetted contact units) .48
3.27 Drain time test (for mercury wetted contact units).48
3.28 Voltage surge test .48
Annex A (normative) Standard test coils for reed contact units.50
Annex B (normative) Test systems.52
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62246-1 IEC:2002(E) – 3 –
Figure 1 – Functional characteristics.9
Figure 2 – Time definitions.11
Figure 3 – Remanence test sequence .23
Figure 4 – Sequence of contact circuit resistance measurement .24
Figure 5 – Test circuit for the measurement of release and bounce time of a make
contact unit.27
Figure 6 – Test circuit for the measurement of time parameters of a change-over
contact unit.28
Figure 7 – Electrical endurance test arrangement .39
Figure A.1 – Configuration of test coils .50
Figure B.1 – Test system 1 .52
Figure B.2 – Test system 2 .52
Table 1 – Resistive loads.42
Table 2 – Loads .43
Table 3 – Cables.43
Table A.1 – List of standard test coils .50
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
REED CONTACT UNITS –
Part 1: Generic specification
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62246-1 has been prepared by IEC technical committee 94: All-or-
nothing electrical relays.
The text of this standard is based on the following documents:
FDIS Report on voting
94/156/FDIS 94/164/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.
This standard cancels and replaces IEC 60255-9 (1979).
The detail specifications (DS), the sectional specifications (SS) and the blank detail
specifications (BDS) are not yet available and will be developed as the need arises.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
2005. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
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62246-1 IEC:2002(E) – 5 –
REED CONTACT UNITS –
Part 1: Generic specification
1 General
1.1 Scope
This part of IEC 62246 which is the generic specification applies to dry and mercury wetted
reed contact units of assessed quality. It lists the tests and measurement procedures which
may be selected for use in detail specifications for such units. This standard also specifies the
quality assessment procedures to be followed.
This standard applies to those reed contact units which are operated by an applied magnetic
field; it is not restricted to any particular type of contact load.
NOTE 1 Since tests using a standard coil and standard resistive loads are the easiest to specify and to define,
this standard is currently restricted to tests of this type.
NOTE 2 For elementary relays with reed contact units, this standard is recommended to be used together with the
standards IEC 61810-1 and IEC 61811-1 as applicable.
Where in this part of IEC 62246 the term “detail specification” is used, this either has the
meaning defined in A.7 of QC 001001 for application within the IECQ system, or it means any
appropriate document, for example manufacturer’s data sheet, test specification, customer
detail specification.
1.2 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 amendments) applies.
IEC 60027, Letter symbols to be used in electrical terminology
IEC 60050, International Electrotechnical Vocabulary (IEV)
IEC 60068-1:1988, Environmental testing – Part 1: General and guidance
Amendment 1(1992)
IEC 60068-2-1:1990, Environmental testing – Part 2: Tests – Tests A: Cold
Amendment 1(1993)
Amendment 2(1994)
IEC 60068-2-2:1974, Environmental testing – Part 2: Tests – Tests B: Dry heat
Amendment 1(1993)
Amendment 2(1994)
IEC 60068-2-3:1969, Environmental testing – Part 2: Tests – Test Ca: Damp heat, steady
state
IEC 60068-2-6:1995, Environmental testing – Part 2: Tests – Test Fc: Vibration (sinusoidal)
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– 6 – 62246-1 IEC:2002(E)
IEC 60068-2-7:1983, Environmental testing – Part 2: Tests – Test Ga: Acceleration, steady state
Amendment 1(1986)
IEC 60068-2-11:1981, Environmental testing – Part 2: Tests – Test Ka: Salt mist
IEC 60068-2-13:1983, Environmental testing – Part 2: Tests – Test M: Low air pressure
IEC 60068-2-14:1984, Environmental testing – Part 2: Tests – Test N: Change of temperature
Amendment 1(1986)
IEC 60068-2-17:1994, Basic environmental testing procedures – Part 2: Tests – Test Q:
Sealing
IEC 60068-2-20:1979, Environmental testing – Part 2: Tests – Test T: Soldering
Amendment 2(1987)
IEC 60068-2-21:1999, Environmental testing – Part 2-21: Tests – Test U: Robustness of
terminations and integral mounting devices
IEC 60068-2-27:1987, Environmental testing – Part 2: Tests – Test Ea and guidance: Shock
IEC 60068-2-29:1987, Environmental testing – Part 2: Tests – Test Eb and guidance: Bump
IEC 60068-2-30:1980, Environmental testing – Part 2: Tests – Test Db and guidance: Damp
heat, cyclic (12 + 12 hour cycle)
Amendment 1(1985)
IEC 60096 (series), Radio-frequency cables
IEC 60317-1:1990, Specifications for particular types of winding wires – Part 1: Polyvinyl
acetal enamelled round copper wire, class 105
Amendment 1(1997)
Amendment 2(1997)
IEC 60410:1973, Sampling plans and procedures for inspection by attributes
IEC 60617, Graphical symbols for diagrams
IEC 61810-1:1998, Electromechanical non-specified time all-or-nothing relays – Part 1:
General requirements
IEC 61811-1:1999, Electromechanical non-specified time all-or-nothing relays of assessed
quality – Part 1: Generic specification
ISO 1000, SI units and recommendation for the use of their multiples and of certain other
units
ITU-T Recommendation K.17:1988, Tests on power-fed repeaters using solid-state devices in
order to check the arrangements for protection from external interference
QC 001002, IEC Quality Assessment System for Electronic Components (IECQ) – Rules of
Procedure
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62246-1 IEC:2002(E) – 7 –
1.3 Units, symbols and terminology
Units, graphical symbols, letter symbols and terminology shall, whenever possible, be taken
from the following documents:
ISO 1000, SI units and recommendations for the use of their multiples and of certain other units
IEC 60027, Letter symbols to be used in electrical technology
IEC 60050, International electrotechnical vocabulary
IEC 60617, Graphical symbols for diagrams
Any other units, symbols and terminology specific to one of the components covered by the
generic specification, shall be taken from the relevant IEC or ISO documents, listed under 1.2.
The following additional terminology is also applicable.
1.3.1
reed contact unit
assembly containing contact blades, some or all of magnetic material, hermetically sealed in
an envelope and controlled by means of externally generated magnetic field (e.g. an
energizing quantity applied to a coil)
1.3.2
mercury wetted contact unit
assembly containing contact blades, some or all of magnetic material, some or all mercury
wetted, hermetically sealed in an envelope and controlled by means of an externally
generated magnetic field (e.g. an energizing quantity applied to a coil)
1.3.3
contact blade
metal blade providing either the functions of the electric or magnetic circuit or both functions
combined as in the case of dry and wetted reed contact units.
For mercury wetted contact units: metal blade providing either the functions of the electric
circuit through mercury or the magnetic circuit, or both functions combined
1.3.4
biasing magnetic field
continuous magnetic field intended to determine the operate and the release position of the
contact, which can be adjusted to form a monostable or bistable contact unit
NOTE For bistable contact units, operate and release conditions have to be defined by the manufacturer in the
detail specification with reference to applied magnetic field polarity.
1.3.5
applied magnetic field
externally generated field (for example by a test coil) intended to change the position of the
contact
1.3.6
contact unit, mechanically biased
contact unit where the biasing, to determine the operate and release positions, is achieved
mechanically
1.3.7
magnetically biased contact unit
contact unit to which a biasing magnetic field is applied, determining the functional
characteristics and the operate and release position
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– 8 – 62246-1 IEC:2002(E)
1.3.8
make contact (Form A contact)
means that a reed contact unit is open when there is no applied magnetic field. This is a
normally open contact
1.3.9
break contact (Form B contact)
means that a reed contact unit is closed when there is no applied magnetic field. This is a
normally closed contact
1.3.10
change-over reed contact unit
contains a make contact and a break contact within its envelope, one contact blade being
common
a) change-over break-before-make reed contact unit (Form C contact)
Change-over reed contact unit, one contact circuit of which breaks before the other
makes.
b) change-over make-before-break reed contact unit (Form D contact)
Change-over reed contact unit, one contact circuit of which makes before the other
breaks.
c) change-over reed contact unit with unspecified switching sequence (Form A and Form B
contacts)
Change-over reed contact unit where the switching sequence can be either make-
before-break or break-before-make.
1.3.11
type
type comprises products having similar design features manufactured by the same techniques
and falling within the manufacturer's usual range of ratings for these products
NOTE Mounting accessories are ignored, provided they have no significant effect on the test results.
1.3.12
variant
variation within a type having specific nominal dimensions and characteristics
1.3.13
rated value
value assigned by the manufacturer to a given characteristic of the reed contact unit
1.3.14
operate position
position where the make contact is closed and the break contact is open.
1.3.15
release position
position where the make contact is open and the break contact is closed
1.3.16
to operate
reed contact unit operates when it changes from the release position to the operate position
1.3.17
to release
reed contact unit releases when it changes from the operate position to the release position
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62246-1 IEC:2002(E) – 9 –
1.3.18
just-operate value
value of the magnetic field at which the released reed contact unit just operates (see figure 1)
Magnetic field
Saturate value
Characteristic
non-release value
Must-operate value
Must-not-release value
Just-operate value
(specific to each
contact unit)
Just-release value
(specific to each
contact unit)
Must-not-operate value
Must-release value
t
IEC 1093/02
Figure 1 – Functional characteristics
1.3.19
must-operate value
stated limit of the applied magnetic field at which the reed contact unit operates (see figure 1)
1.3.20
just-release value
value of the applied magnetic field at which the operated reed contact unit just releases (see
figure 1)
1.3.21
must-release value
stated limit of the applied magnetic field at which the operated reed contact unit releases (see
figure 1)
1.3.22
must-not-operate value
stated limit of the applied magnetic field at which the reed contact unit does not operate (see
figure 1)
1.3.23
must-not-release value
stated limit of the applied magnetic field at which the operated reed contact unit remains
operated (see figure 1)
1.3.24
characteristic non-release value
stated value of the applied magnetic field above which the operated reed contact unit fulfils
specified qualities, for example contact resistance, noise characteristics, etc. (see figure 1)
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– 10 – 62246-1 IEC:2002(E)
1.3.25
saturate value
arbitrarily defined value of the applied magnetic field at which the reed contact unit is
unaffected by further increase of the applied magnetic field (see figure 1)
1.3.26
bounce
momentary re-opening of a contact after initial closing, or a momentary closing after initial
opening
1.3.27
magnetic dwell (only for change-over contact units)
difference in the values of applied magnetic field when the break contact just opens and the
make contact just closes, or vice versa
NOTE For time definitions, see figure 2, for test conditions, see 3.10.
1.3.28
bounce time
interval of time between the instant of the first closing (or opening) and the instant of the final
closing (or opening) of the reed contact unit
1.3.29
operate time
time between the instant of the application of a magnetic field to a reed contact unit and the
instant the contact is in the operate position. It does not include bounce time
1.3.30
release time
time between the instant of the removal of the applied magnetic field to a reed contact unit,
and the instant the contact is in the release position. It does not include bounce time
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62246-1 IEC:2002(E) – 11 –
Oscilloscope diagram
V
V
B
0,62
0,35
0,25
0
t t t t t t t t
1 5 3 6 10 11 15 13 16
t ms
min.
t
t
12
2
IEC 1094/02
a) Break-before-make
V
V
B
0,62
0,50
0,35
0,25
0
t ms
t t t t
t t t t
10 min. 12 15 14 16
2 5 4 6
t t
1 11
IEC 1095/02
b) Make-before-break
Energization of the test coil De-energization of the test coil
t : operate break time t : release break time
1 11
t : operate make time t : release make time
2 12
t : operate transfer time t : release transf
...
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