IEC 61811-11:2002

IEC 61811-11 ®
Edition 1.0 2002-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromechanical elementary relays of assessed quality –
Part 11: Blank detail specification – Relays for industrial application

Relais électromécaniques élémentaires sous assurance de la qualité –
Partie 11: Spécification particulière cadre – Relais pour application industrielle

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IEC 61811-11 ®
Edition 1.0 2002-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromechanical elementary relays of assessed quality –

Part 11: Blank detail specification – Relays for industrial application

Relais électromécaniques élémentaires sous assurance de la qualité –

Partie 11: Spécification particulière cadre – Relais pour application industrielle

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX R
ICS 29.120.70 ISBN 978-2-8322-1620-0

– 2 – IEC 61811-11:2002 © IEC 2002
CONTENTS
FOREWORD . 3
1 General . 5
1.1 Scope . 5
1.2 Normative references . 5
1.3 Front page of detail specification . 6
2 Characteristic values of the relay . 7
2.1 General data . 7
2.2 Construction of IECQ type designation (ordering information) . 8
2.3 Coil data. 8
2.4 Contact data . 8
2.5 Terminals . 9
2.6 Mounting . 10
2.7 Environmental data . 10
3 Qualification approval procedures . 10
4 Quality conformance inspection . 10
4.1 Formation of inspection lots . 11
4.2 Intervals between group C tests . 11
5 Marking of relay and package . 11
5.1 Marking of the relay . 11
5.2 Marking of package . 11
5.3 Documentation . 11
6 Annexes . 11
7 Tests . 12
7.1 Standard conditions for testing . 12
7.2 Mounting of test items during test . 12
7.3 General conditions for testing . 12
8 Ordering information . 12

Table 1 – Dielectric test voltages . 8
Table 2 – Coil data . 8
Table 3 – Loads, operating cycles and frequencies for endurance tests . 9
Table 4 – Terminals . 10
Table 5 – Tests for quality conformance inspection . 13
Table 6 – Tests for qualification approval . 19

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROMECHANICAL ELEMENTARY RELAYS
OF ASSESSED QUALITY –
Part 11: Blank detail specification –
Relays for industrial application

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 61811-11 has been prepared by IEC technical committee 94: All-
or-nothing electrical relays.
This bilingual version (2014-05) corresponds to the English version, published in 2002-11.
This standard cancels and replaces IEC 60255-19-1 (1983).
The text of this standard is based on the following documents:
FDIS Report on voting
94/169/FDIS 94/173/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.
The French version of this standard has not been voted upon.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – IEC 61811-11:2002 © IEC 2002
The committee has decided that the contents of this publication will remain unchanged until
2006. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
ELECTROMECHANICAL ELEMENTARY RELAYS
OF ASSESSED QUALITY –
Part 11: Blank detail specification –
Relays for industrial application

1 General
1.1 Scope
This part of IEC 61811 is a blank detail specification applicable to electromechanical
elementary (non-specified time all-or-nothing) relays of assessed quality for industrial
application.
It is based on the generic specification IEC 61811-1 and the sectional specification
IEC 61811-10 and selects from IEC 61810-7 the appropriate test and measurement
procedures to be used in detail specifications derived from this specification. Moreover it
contains a basic test schedule to be used in the preparation of such specifications.
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 60062:1992, Marking codes for resistors and capacitors
IEC 60068-1:1988, Environmental testing – Part 1: General and guidance
Amendment 1 (1992)
IEC 60068-2-10:1988, Basic environmental testing procedures – Part 2: Tests – Test J and
guidance: mould growth
IEC 60068-2-21:1999, Environmental testing – Part 2-21: Tests – Test U: Robustness of
terminations and integral mounting devices
IEC 60068-2-47:1999, Environmental testing – Part 2-47: Test methods – Mounting of
components, equipment and other articles for vibration, impact and similar dynamic tests
IEC 60255-23:1996, Electrical relays – Part 23: Contact performance
IEC 60695-2-11, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end-products
IEC 60695-2-12, Fire hazard testing – Part 2-12: Glowing/hot-wire based test methods –
Glow-wire flammability test method for materials
IEC 61810-1:1998, Electromechanical non-specified time all-or-nothing relays – Part 1:
General requirements
IEC 61810-5:1998, Electromechanical non-specified time all-or-nothing relays – Part 5:
Insulation coordination
IEC 61810-7:1997, Electromechanical all-or-nothing relays – Part 7: Test and measurement
procedures
– 6 – IEC 61811-11:2002 © IEC 2002
IEC 61811-1:1999, Electromechanical non-specified time all-or-nothing relays of assessed
quality – Part 1: Generic specification
IEC 61811-10:2002, Electromechanical elementary relays of assessed quality – Part 10:
Sectional specification – Relays for industrial application
IEC QC 001002, Rules of procedure for the IEC Quality Assessment System for Electronic
Components (IECQ)
IEC QC 001005, Register of firms, products and services approved under the IECQ System,
including ISO 9000
1.3 Front page of detail specification
The layout of the front page of detail specification is as follows:

[1] QC xxxxx [2]
Edition: .
Page 1 of .
Electronic components of assessed quality     [3]       [4]
in accordance with:
IEC 61810-7:1997
IEC 61811-1:1999
IEC 61811-10:2002
Detail specification for electromechanical non-specified time
all-or-nothing relays for industrial application

Type:       [5]
Construction:      [6]
Outline drawing       [7] Application      [8]

Dimensions in mm
Coil data       [9]
- Rated voltage: ……
- Rated power:  ……
Contact data      [10]
Temperature range      [11]

- Operating temperature: .

- Storage temperature: .
Information about manufacturers who have components qualified to this detail specification is
available in the current QC 001005.

Key to front page:
The numbers between square brackets on the front page correspond to the following
indications which should be given in the appropriate boxes.
Identification of the detail specification
[1] The name of the National Standards Organization under whose authority the detail
specification is published and, if applicable, the organization from whom the detail
specification is available.
[2] The IECQ symbol and the number allotted to the completed detail specification by the
IECQ Secretariat.
[3] The number and the year of availability of the IEC generic and/or sectional specification
and the IEC standard concerning test and measurement procedures; also national
reference, if different.
[4] If different from the IECQ number, the national number of the detail specification, date
of issue and any further information required by the national system, together with any
amendment numbers.
Identification of the relay
[5] A brief description of the relay or range of relays.
[6] Information on typical construction.
[7] An outline drawing with main dimensions which are of importance for interchangeability
and/or reference to the appropriate national or international document for outlines.
Alternatively, this drawing may by given in an annex to the detail specification, but [7]
should always contain an illustration of the general outer appearance of the relay.
[8] Typical field of application and assessment level (if applicable).
[9] Available nominal coil voltages and rated power.
[10] Available contact arrangements and contact current and voltage.
[11] Temperature range and climatic category according to IEC 60068-1 (if applicable).
2 Characteristic values of the relay
These shall be in accordance with IEC 61810-1 as applicable.
2.1 General data
Contact application category: CA .
Contact arrangement:  .
Mass:   . g max.
Finish of the relay housing: .
Finish of the terminals: .
Insulation resistance:  . MΩ min.
Dielectric strength:  . V min.

– 8 – IEC 61811-11:2002 © IEC 2002
Table 1 – Dielectric test voltages
Impulse voltage
Test voltage
... / ... µs
V a.c. min.
V min.
Open contacts
Between adjacent contacts
Contacts to case
Coil to contacts
Coil to case
2.2 Construction of IECQ type designation (ordering information)

Relay    IECQ - XXXX A B C Z
_____________
Denomination
_________________
IECQ detail specification number
___________________________
Coil voltage (according to Table 2)
___________________________
Terminals (according to 2.5 and Annex B)
_________________________________
Mounting (according to 2.6 and Annex A)
Special attributes (e.g. suppression diode, additional functions according to 2.3) _______
The reference to monostable or bistable, polarized or non-polarized, number and kind of
contacts and general coil additives shall be given in the title of the specification. Only if one
(or more) of these attributes is optional, shall the respective code(s) be given. There shall be
no special marks or open space for non applicable criteria.
2.3 Coil data
Table 2 – Coil data
Must
Coil Must
Suppres-
not Rated
Code Coil voltage resistance operate Must release voltage
sion or
release power/
letter d.c./a.c. and / or voltage d.c./a.c.
special
voltage burden
impedance d.c./a.c.
function
d.c./a.c.
code or
1)
V V at 23 °C V V V V W/VA
letter
max max min min
rated max. at 23 °C at 23 °C at 23 °C at 23 °C
Ω ± . %
1)
Configuration of coil suppression or special function, if applicable (details may be given in an annex).
2.4 Contact data
2.4.1 Contact number, contact configuration and application categories
To be given in the detail specification.

2.4.2 Contact load, electrical endurance and switching frequency
Maximum contact voltage: . V
Minimum contact voltage: . V
Maximum contact current: . A
Minimum contact current: . A

Table 3 – Loads, operating cycles and frequencies for endurance tests
Number of Switching
at at
Loads operating cycles frequencies in
V d.c. V a.c. / Hz
min. cycles per s max.
Resistive
Low level
For inductive load the maximum induction relating to the load shall be specified. For relays
with contact application category CA 0, the lower values for switching voltage and current
shall be specified.
2.4.3 Static contact resistance
... mΩ max. initial resistance
... mΩ max. after electrical endurance test.
(Relays with long leads to be measured at a prescribed distance from the relay body.)
2.4.4 Dynamic contact resistance
... mΩ max. for the respective nominal load (according to 2.4.2).
... mΩ max. for dry circuit switching.
(For relays with long leads the test point shall be specified according to 2.4.3.)
2.4.5 Mechanical endurance
... operating cycles
2.4.6 Timing (over the whole temperature range)
Operate time  max. . ms
Bounce time  max. . ms
Stabilization time max. . ms
Release time  max. . ms
Release time  max. . ms (with suppression device)
2.5 Terminals
The type of terminals with their respective finish shall be stated together with the identifying
code letter.
If the terminals are specified in Annex B of the detail specification, reference shall be made to
the annex.
– 10 – IEC 61811-11:2002 © IEC 2002
Table 4 – Terminals
Code letter Terminals Finish
The robustness of terminals (if specified) shall be indicated according to IEC 60068-2-21, in
case of quick-connect terminals according to Annex A of IEC 61810-1.
2.6 Mounting
The mounting variants and the respective code letters shall be specified. Details and drawings
shall be included in Annex A of the detail specification.
2.7 Environmental data
The relays shall withstand at least the following environmental stresses:
Shock:  . m/s , half sine pulse
Bump:  . m/s , . ms duration
Vibration (sinusoidal): amplitude . mm or acceleration . m/s , . Hz to . Hz
(random): . g /Hz, . Hz to . Hz
Climatic category: .
Further requirements may be indicated in this subclause as applicable, in particular regarding
the enclosure (e.g. sealing), or resistance against acoustic noise, mould growth, corrosive
atmospheres, etc.
3 Qualification approval procedures
– As stated in clause 3 of QC 001002-3, fixed sample.
– In accordance with the provisions stated in 2.2 of IEC 61811-1 and 4.2 of IEC 61810-1.
– Sampling and test schedule are specified in Table 6.
– The tests specified and their order are mandatory, unless otherwise stated.
4 Quality conformance inspection
Quality conformance inspection contains the tests stated in Table 5:
– Groups A and B: lot-by-lot tests;
– Group C: periodic tests.
Unless otherwise stated (R = recommended test) in this blank detail specification, all tests of
Table 5 are mandatory. Where a subgroup contains cumulative tests, the order of the tests is
mandatory. Additional tests (e.g. internal moisture, overload, explosion proof, etc.) may be
added in the relevant detail specification, as applicable. Samples subjected to tests denoted
as destructive (D) shall not be released for delivery.

4.1 Formation of inspection lots
According to 3.3.1 of IEC QC 001002-3; the basis for determination of sample size for the
quality conformance inspection is the relay quantity produced during one week.
4.2 Intervals between group C tests
The tests of group C shall be performed in the intervals specified in Table 5.
5 Marking of relay and package
The relay and the package shall be marked with the information given in 5.1 and 5.2 as
a minimum.
5.1 Marking of the relay
The marking shall be durable and easily legible, the following items shall be present:
(1) Manufacturer's name, logo or trade mark;
(2) relay type and variants code as defined in 2.2 and in the detail specification;
(3) year and week of manufacture, preferably coded according to IEC 60062;
(4) IECQ mark of conformity;
(5) wiring diagram or identification of terminals (if applicable).
5.2 Marking of package
(1) Manufacturer's name, logo or trade mark;
(2) relay type and variants code as defined in 2.2 and in the detail specification;
(3) year and week of manufacture, preferably coded according to IEC 60062;
(4) IECQ mark of conformity;
(5) quantity;
(6) any further marking as defined in the detail specification.
5.3 Documentation
For each delivery a certificate of conformance according to QC 001002 shall be added.
6 Annexes
Annexes may be added, for example:
Annex A showing mounting variants, their dimensions and corresponding code;
Annex B showing terminal variants, their dimensions and corresponding code;
Annex C showing wiring diagrams;
Annex D showing coil suppression variants and/or special contact configuration and/or
special kind of contacts and corresponding codes.

– 12 – IEC 61811-11:2002 © IEC 2002
7 Tests
7.1 Standard conditions for testing
Unless otherwise specified all tests shall be performed according to 3.5 of IEC 61810-7.
7.2 Mounting of test items during test
For mechanical dynamic tests (e.g. shock, vibration, acceleration, bump), the relay shall be
mounted by its normal mounting methods to the test fixture where inherent resonances have
been minimized so as not to invalidate the test (see IEC 60068-2-47).
7.3 General conditions for testing
Unless otherwise stated, the tests shall be carried out under general conditions according
to IEC 60068-1.
Unless otherwise stated, the rated energization voltage specified in Table 2 shall be used
for all tests.
The polarity of polarized relays shall be observed.
For bistable relays, energizing conditions to be used for testing shall be specified here.

8 Ordering information
See 2.2.
Table 5 – Tests for quality conformance inspection
Group A
To be conducted on a sampling basis, lot-by-lot.
Subgroup A1
For all tests in this subgroup: IL: .
AQL: .
Test Test and subclause number
Conditions of test Performance requirements
No. according to IEC 61810-7:1997
1 Visual inspection (ND) 3.6.4 items a) and b) Marking shall be present
3.6.4 and legible
2 Coil resistance (ND) Values as given in Table 2
(for d.c. relays only)
3.8.1
3 Dielectric test (ND) - Application points: No breakdown or flashover.
3.9 selected terminals as specified in 3.9.2 Maximum leakage current:
- Test voltage: see Table 1 . A
- Duration of test: 1 s
4 Static contact-circuit resistance - Application points: all closed contacts Maximum contact
(ND) - Test voltage max.: . V resistance: . mΩ
3.12 - Test current max.: . A
- Number of readings: 3
5 Functional tests (ND) - Order of steps for monostable non- Values according to Table 2
3.13 polarized relays:
(1) rated value for conditioning
(2) zero voltage
(3) operate voltage
(4) rated voltage
(5) non-release voltage (recommended)
(6) release voltage
- Order of steps for other relay types:
analogous (see figures 2 to 5 of
IEC 61810-7)
- One switching cycle min.
- Mounting: as specified
- Energization values as given in Table 2
6 Timing tests (ND) - Coil voltage: rated voltage Values according to 2.4.6
(R) 3.14.2 - Application points: all contacts
- Contact voltage/current: . V / . A
- Items required in 3.14.2 as applicable

– 14 – IEC 61811-11:2002 © IEC 2002
Group B
To be conducted on a sampling basis, lot-by-lot.
Subgroup B2 (D)
For all tests in this subgroup: IL: .
AQL: .
Test Test and subclause number Performance
Conditions of test
No. according to IEC 61810-7:1997 requirements
7 Visual inspection other than Mandatory test for the relay, recommended Free from external
marking (ND) for accessories and packaging as damage or defects
3.6.4 items c) and d) applicable.
Workmanship and finish
8 Check of dimensions (ND)/(D) Mandatory for key dimensions, The dimensions shall be
3.6.1 recommended for all other dimensions within the tolerances
including clearances and creepage specified
distances
Group C
Periodic tests with fixed sample size
Subgroup C1
Periodicity: max. 12 months
Sample size: min. 3 specimens

Sample size
Test and subclause
Test and Performance
number according to Conditions of test
No. acceptance requirements
IEC 61810-7:1997
criterion
n c
9 Temperature rise of relay In accordance with 4.1.6 of 3 0 After the thermal equilibrium
parts (ND) IEC 61810-1 is reached, the prescribed
3.18 – Details of test setup limits of temperature rise
– Temperature: upper limit of shall not be exceeded
the nominal range specified
– All make contacts loaded with
limiting continuos current
– Coil energized at 1,1 times
the rated coil voltage
– Limits of temperature rise
10 Dielectric test (ND) Same as test no. 3  Same as test No. 3
3.9
11 Impulse voltage test (ND) In accordance with clause 4 of  No breakdown or flashover,
3.10 IEC 61810-5 unless otherwise specified
– Application points: all
terminals specified
– Waveform: . / . µs
– Peak value: . V
12 Insulation resistance (ND) - Application points: selected  … MΩ min.
3.11 from 3.11.2
- Test voltage: 500 V d.c.
- Duration of test: … s
13 Enclosure (ND) - Sealing (3.20.2):  As given in 2.7 and in the
(R) 3.20 Procedure or sequence of detail specification
procedures and methods in
them, and severity
- Sand and dust (3.20.3):
Characteristic numeral
Subgroup C2
Periodicity: max. 12 months
Sample size: min. 4 specimens / 10 contacts

Sample size
Test and subclause
Test and Performance
number according to Conditions of test
No. acceptance requirements
IEC 61810-7:1997
criterion
n c
14 Electrical endurance (D) - Method 1 of 3.30 min. 4 0 All operating cycles shall be
3.30 - Type(s) of load: see 2.4.2 monitored.
- Contacts tested: as specified Permitted number of
- Total number of cycles: see failures: .
2.4.2 After test all fuses shall be
- Test frequency: see 2.4.2 intact.
- Ambient temperature: .°C
- Coil voltage: rated value
- Failure criteria: see 4.4 of
IEC 60255-23
- Final measurements
Subgroup C3
Periodicity: max. 12 months
Sample size: min. … specimens

Sample size
Test and subclause
Test and Performance
number according to Conditions of test
No. acceptance requirements
IEC 61810-7:1997
criterion
n c
15 Timing tests (ND) Same as test No. 6 3 0 Same as test No. 6
3.14
(only if not tested in
subgroup A1)
16 Coil transient suppression - Rated coil voltage  The back-e.m.f. shall not
(R) (ND) - Limits for back-e.m.f. exceed the specified limit
3.8.4
(for relays with transient
suppression device only)
17 Weighing (ND)  The mass shall not exceed
(R) 3.7.2 the prescribed limits
18 Check of dimensions For all dimensions not tested in  Same as test No. 8
(ND)/(D) subgroup B2
3.6.1
– 16 – IEC 61811-11:2002 © IEC 2002
Subgroup C5
Periodicity: max. 2 years
Sample size: min. … specimens

Sample size
Test and subclause
Test and
number according to Conditions of test Performance requirements
No. acceptance
IEC 61810-7:1997
criterion
n c
19 Rapid change of - Max. temperature: . °C 3 0 No signs of deterioration.
(R) temperature (D) - Min. temperature: . °C Resistance values within
3.19 - Duration: . min specified limits.
- Final measurements: as
specified
20 Resistance to soldering - Test 2 or test 4 (surface 3 0 No signs of deterioration.
heat (D) mount terminals) Tightness of sealed relays
3.25 - Methods in either of them: as maintained.
(for relays with solder specified Limits of specified parameters
terminals only) - Number of terminals to be not exceeded.
inspected: as specified
- Final measurements: as
specified
21 Climatic sequence (D) Dry heat: 3 0 Presence of functions as
(R) 3.15 - Test Ba or Bc specified.
- Duration of test: 16 h No evidence of deterioration.
- Temperature: .°C Resistance values within
- Contact load: . prescribed limits.
Cold:
- Test Aa or Ab
- Duration of test: 2 h
- Temperature: . °C
- Contact load: .
Final measurements: as
specified
22 Damp heat, steady state - Duration: . days 3 0 No evidence of deterioration.
(R) (D) - Recovery time: . h at room Resistance values within
3.16 temperature prescribed limits.
23 Robustness of terminals - Applicable test selected from 3 0 No evidence of deterioration.
(R) (D) IEC 60068-2-21 Resistance values within
3.24 - Loads: as specified in 2.5 prescribed limits.
- Number of terminals to be
tested: .
- For quick-connect terminals
in accordance with A.4.2 of
IEC 61810-1.
24 Shock (D) - Method 1 or 2 3 0 No opening of closed contact
(R) 3.26 - Pulse shape, acceleration and circuits or closing of opened
duration: as 2.7 contact circuits shall exceed
- Contact load: .
10 µs.
- Energization value : .
Contact circuit resistance
within prescribed limits.
25 Bump (D) - Method 1 or 2 3 0 No opening of closed contact
(R) 3.27 - Acceleration and number circuits or closing of opened
of bumps: as 2.7 contact circuits shall exceed
- Contact load: .
10 µs.
- Energization value : . Contact circuit resistance
within prescribed limits.
26 Vibration (D) - Method 1 or 2 3 0 No opening of closed contact
(R) 3.28 - Frequency range: . Hz circuits or closing of opened
- Acceleration: . m/s contact circuits shall exceed
- Spectral density: .
10 µs.
- Duration: .
Contact circuit resistance
- Contact load: .
within prescribed limits.
- Energization value : .
Sample size
Test and subclause
Test and
number according to Conditions of test Performance requirements
No. acceptance
IEC 61810-7:1997
criterion
27 Mechanical endurance (D) - Method 1 3 0 No evidence of deterioration.
(R) 3.31 - Energization value: as Table 2 Resistance values within
- Monitoring contact load: . prescribed limits.
- Number of cycles/h: .
- Duty factor: .
- Total number of cycles: .
- Allowed number of false
contact cycles: .
- In accordance with 4.1.4 of
IEC 61810-1
28 Thermal endurance (D) - Duration: 1000 h 3 0 No evidence of deterioration.
(R) 3.32 - Temperature: .°C Resistance values within
- Energization value: as Table 2 prescribed limits.
29 Fire hazard (D) Glow-wire test in accordance 3 0 Compliance with the criteria of
3.48 with 4.1.7 of IEC 61810-1 IEC 60695-2-11 or
- Number of specimens: 3 IEC 60695-2-12.
- Temperature: .°C
Subgroup C6
Periodicity: max. 2 years
Sample size: min. . specimens

Sample size
Test and subclause
Test and
number according to Conditions of test Performance requirements
No. acceptance
IEC 61810-7:1997
criterion
n c
30 Resistance to cleaning - Solvent(s) to be used: . 3 0 No visible damage.
(R) solvents (ND) - Solvent temperature: .°C Marking remains legible.
3.47 - Method 1 or 2
- Final measurements: .
31 Electrical contact noise - Energization value(s): . V  Noise voltage within specified
(R) (ND) - Test circuit limits
3.39 - Measurement equipment
(only if required) - Limits of noise voltage: . V
32 Mould growth (D) - Details as required in 3 0
(R) 3.23 IEC 60068-2-10
(only if required) - Initial/final measurements

33 Corrosive atmospheres (D) - Corrosive atmosphere(s): . 3 0
(R) 3.22 - Severities: .
(only if required) - Recovery conditions: .
- Final measurements: .
– 18 – IEC 61811-11:2002 © IEC 2002
Group D
Periodic tests with fixed sample size
Periodicity: max. 2 years
Sample size: min. 3 specimens

Sample size
Test and subclause
Test and
number according to Conditions of test Performance requirements
No. acceptance
IEC 61810-7:1997
criterion
n c
Coil impedance shall be within
34 Coil impedance (ND) - Method 1 3 0
(R) (only for a.c. relays) - Test voltage: rated value the specified limits
3.8.3 - Test frequency: . Hz
35 Internal moisture (ND) Method 1 or 2  Insulation resistance:
(R) 3.21
... MΩ min.
(when applicable)
36 Solderability (D) - Test 1 or test 3 (for surface  There shall be good wetting of
3.25.3 mounting terminals) the terminals
(relays with solder - Method 1, 2, or 3 of test 1
terminals only) - Ageing procedure, if required
- Number of terminals to be
tested: all
Glossary: IL Inspection Level
AQL Acceptable Quality Level
n Sample size
c Acceptance criterion (permitted number of defectives)
D Destructive test
ND Non-destructive test
R Recommended test
Table 6 – Tests for qualification approval
Sample size: minimum . samples
Variants of samples: Terminal variants (kind and number): .
Mounting variants (kind and number): .
Coil variants (voltage, d.c. or a.c., and number): .

Test group 0: all samples
Test conditions and requirements
(Execution of tests according to Table 5)
Number of
Sample
Examination or test allowed
Test conditions Test No. Subgroup
size
defectives
according to clause No. (see (see
of IEC 61810-7:1997 Table 5) Table 5)
Visual inspection 3.6.4 1 A1 all
Dielectric test 3.9 3 A1 all
Static contact resistance 3.12 4 A1 all 0
Functional tests 3.13 5 A1 all
Coil resistance (as applicable) 3.8.1 2 A1 all
Timing tests (R) 3.14 6 A1 all

Test Group 1: minimum … + 1 samples
Rapid change of temperature (R) 3.19 19 C5 3
Resistance to soldering heat 3.25.3 20 C5 3
(if applicable)
Shock (R) 3.26 24 C5 3
Bump (R) 3.27 25 C5 3
Vibration, random (R) 3.28 26 C5 3
Visual inspection other than 3.6.4 7 B2 3
marking
Test Group 2: minimium … + 1 samples
Weighing (R) 3.7.2 17 C3 2
Internal moisture (R) 3.21 35 D 2
(if applicable)
Temperature rise of relay parts 3.18 9 C1 2
Resistance to cleaning solvents 3.47 30 C6 3 1
(R)
Dimensions 3.6.1 8+18 B2+C3 3
Solderability (if applicable) 3.25 36 D 3

Robustness of terminals (R) 3.24 23 C5 2
(as applicable)
Fire hazard 3.48 29 C5 3
Test Group 3: minimum … samples

Damp heat, steady state (R) 3.16 22 C5 3
Climatic sequence (R) 3.15 21 C5 3
Mould growth (R) (if required) 3.23 32 C6 3 0
Corrosive atmospheres (R) 3.22.1 33 C6 3
(if required)
– 20 – IEC 61811-11:2002 © IEC 2002
Test Group 4: minimum … + 1 samples
Test conditions and requirements
(Execution of tests according to Table 5)
Number of
Sample
Examination or test allowed
Test conditions Test No. Subgroup
size
defectives
according to clause No. (see (see
of IEC 61810-7:1997 Table 5) Table 5)
Thermal endurance (R) 3.32 28 C5 3
Electrical endurance 3.30 14 C2 4
Mechanical endurance (R) 3.31 27 C5 3

Test Group 5: minimum … samples
Electrical contact noise (R) 3.39 31 C6 3
(if required)
Dielectric test 3.9 10 C1 3 0
Impulse voltage test 3.10 11 C1 3

Test Group 6: minimum … samples
Timing tests 3.14 6+15 A1+C3 3
Insulation resistance 3.11 12 C1 3
Coil impedance (R) 3.8.3 34 D 3 0
(as applicable)
Coil transient suppression (R) 3.8.4 16 C3 3
(if applicable)
Enclosure (R) 3.20 13 C1 3
___________
– 22 – IEC 61811-11:2002 © IEC 2002
SOMMAIRE
AVANT-PROPOS . 23
1 Généralités . 25
1.1 Domaine d'application . 25
1.2 Références normatives . 25
1.3 Page de garde de la spécification particulière . 26
2 Valeurs caractéristiques du relais . 27
2.1 Caractéristiques générales . 27
2.2 Construction d'une désignation de type IECQ (informations relatives aux
commandes). 28
2.3 Informations sur les bobines . 28
2.4 Informations sur les contacts . 28
2.5 Bornes . 29
2.6 Montage . 30
2.7 Caractéristiques d'environnement . 30
3 Procédures d’homologation . 30
4 Contrôle de conformité de la qualité . 30
4.1 Formation des lots d’inspection . 31
4.2 Périodicité des essais du groupe C . 31
5 Marquage du
...