IEC 60335-2-97:2016

IEC 60335-2-97 ®
Edition 3.0 2016-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-97: Particular requirements for drives for shutters, awnings, blinds and
similar equipment
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-97: Exigences particulières pour les motorisations des volets, stores,
rideaux et équipements analogues

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IEC 60335-2-97 ®
Edition 3.0 2016-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –

Part 2-97: Particular requirements for drives for shutters, awnings, blinds and

similar equipment
Appareils électrodomestiques et analogues – Sécurité –

Partie 2-97: Exigences particulières pour les motorisations des volets, stores,

rideaux et équipements analogues

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.01; 91.060.50 ISBN 978-2-8322-3310-8

– 2 – IEC 60335-2-97:2016 © IEC 2016
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references. 9
3 Terms and definitions . 9
4 General requirement . 9
5 General conditions for the tests . 10
6 Classification . 10
7 Marking and instructions . 10
8 Protection against access to live parts . 11
9 Starting of motor-operated appliances . 12
10 Power input and current . 12
11 Heating . 12
12 Void . 12
13 Leakage current and electric strength at operating temperature . 12
14 Transient overvoltages. 12
15 Moisture resistance . 12
16 Leakage current and electric strength . 13
17 Overload protection of transformers and associated circuits . 13
18 Endurance . 13
19 Abnormal operation . 13
20 Stability and mechanical hazards . 13
21 Mechanical strength . 16
22 Construction . 16
23 Internal wiring . 16
24 Components . 16
25 Supply connection and external flexible cords . 16
26 Terminals for external conductors . 17
27 Provision for earthing . 17
28 Screws and connections . 17
29 Clearances, creepage distances and solid insulation . 17
30 Resistance to heat and fire . 17
31 Resistance to rusting . 17
32 Radiation, toxicity and similar hazards . 17
Annexes . 20
Annex C (normative)  Ageing test on motors . 20
Annex R (normative) Software evaluation . 20
Bibliography . 21

Figure 101 – Examples of types of driven parts . 18
Figure 102 – Example of test apparatus without a driven part for drives for rolling
driven parts . 19

– 4 – IEC 60335-2-97:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-97: Particular requirements for drives for shutters,
awnings, blinds and similar equipment

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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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.
This part of International Standard IEC 60335 has been prepared by IEC technical committee
61: Safety of household and similar electrical appliances.
This third edition cancels and replaces the second edition published in 2002 including its
Amendment 1 (2004) and its Amendment 2 (2008). It constitutes a technical revision.
The principal changes in this edition as compared with the second edition of IEC 60335-2-97
are as follows (minor changes are not listed):
– Deleted “rolling” from the title and modified the scope to cover appliance types other than
shutters, awnings, and blinds that are operated in a rolling way;
– Revised 19.13 to allow drives to obtain a safe position;
– Added 19.101 to provide a new abnormal test for drives with rated operating time;

– Added 20.104.4 to establish a test intended to cover horizontal movement (non-rolling)
drive parts;
– Added 20.104.5 to provide an additional test to cover rolling grills to address the risk of
being lifted;
– Modified 22.46 and Annex R to introduce software requirements for programmable
electronic circuits used to comply with Clause 20;
– Added 22.101 to introduce a requirement to prevent inadvertent adjustments that would
lead to unsafe application of drives;
– Added examples of swing shutters and sliding shutters in Figure 101.
The text of this standard is based on the following documents:
FDIS Report on voting
61/5111/FDIS 61/5141/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 publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the fifth edition (2010) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Safety requirements for drives for shutters,
awnings, blinds and similar equipment.
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies
as far as is reasonable. When this standard states “addition”, “modification” or “replacement”,
the relevant text in Part 1 is to be adapted accordingly.
NOTE 2 The following numbering system is used:
– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including
those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.

– 6 – IEC 60335-2-97:2016 © IEC 2016
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website 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.
NOTE 4 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 the Amendment 2 be adopted for implementation
nationally not earlier than 12 months or later than 36 months from the date of publication.

INTRODUCTION
It has been assumed in the drafting of this International Standard that the execution of its
provisions is entrusted to appropriately qualified and experienced persons.
This standard recognizes the internationally accepted level of protection against hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in
normal use taking into account the manufacturer's instructions. It also covers abnormal
situations that can be expected in practice and takes into account the way in which
electromagnetic phenomena can affect the safe operation of appliances.
This standard takes into account the requirements of IEC 60364 as far as possible so that
there is compatibility with the wiring rules when the appliance is connected to the supply
mains. However, national wiring rules may differ.
If an appliance within the scope of this standard also incorporates functions that are covered
by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as
far as is reasonable. If applicable, the influence of one function on the other is taken into
account.
When a part 2 standard does not include additional requirements to cover hazards dealt with
in Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is
not necessary to specify particular requirements for the drive in question over and above the general
requirements.
This standard is a product family standard dealing with the safety of drives and takes
precedence over horizontal and generic standards covering the same subject.
NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IEC 60335 series of standards. For
example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as
ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or part 2 standards.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features that impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those detailed
in the requirements of this standard may be examined and tested according to the intent of
the requirements and, if found to be substantially equivalent, may be considered to comply
with the standard.
– 8 – IEC 60335-2-97:2016 © IEC 2016
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-97: Particular requirements for drives for shutters,
awnings, blinds and similar equipment

1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of electric drives for shutters, blinds and
awnings, intended for household and similar purposes, their rated voltage being not more
than 250 V for single-phase drives and 480 V for other drives.
NOTE 101 Battery-operated drives and other d.c. supplied drives are within the scope of this standard.
NOTE 102 Examples of equipment that can be driven are
– spring controlled folding arm awnings;
– curtains;
– grilles covering doors and windows;
– projection screens;
– shutters covering doors and windows;
– draperies.
Examples are shown in Figure 101.
NOTE 103 Drives may be supplied with a driven part.
Drives not intended for normal household use but that nevertheless may be a source of
danger to the public, such as drives intended to be used by laymen in shops, in light industry,
on farms and on industrial premises, are within the scope of this standard.
As far as is practicable, this standard deals with the common hazards presented by drives
that are encountered by all persons in and around the home. However, in general, it does not
take into account
– persons (including children) whose
• physical, sensory or mental capabilities; or
• lack of experience and knowledge
prevents them from using the drive safely without supervision or instruction;
– children playing with the drive.
NOTE 104 Attention is drawn to the fact that
– for drives intended to be used in vehicles or on board ships or aircraft, additional requirements may be
necessary;
– in many countries, additional requirements are specified by the national health authorities, the national
authorities responsible for the protection of labour and similar authorities.
NOTE 105 This standard does not apply to
– drives intended to be used in locations where special conditions prevail, such as the presence of a corrosive
or explosive atmosphere (dust, vapour or gas);
– drives for vertically moving garage doors for residential use (IEC 60335-2-95);
– drives for rolling doors (IEC 60335-2-103);

– drives used in premises such as hangars or in heavy industry;
– drives for theatre curtains.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60068-2-52:1996, Environmental testing – Part 2: Tests – Test Kb: Salt mist, cyclic
(sodium chloride solution)
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1.9 Replacement:
normal operation
operation of the drive under the following conditions:
– drives supplied without a driven part are operated at rated load;
– drives supplied with a driven part are operated with the driven part installed in
accordance with the instructions
3.101
drive
motor and other components that control the movement of the driven part
Note 1 to entry: Examples of components are gears, controls, brakes and components for power transmission
from the drive to the driven part.
3.102
driven part
movable part, such as a shutter, awning or blind, that is operated by the drive
3.103
rated load
torque or force assigned to the drive by the manufacturer
3.104
rated operating time
duration of continuous operation assigned to the drive by the manufacturer
Note 1 to entry: During continuous operation, the drive may reverse its direction.
3.105
rated number of operating cycles
number of uninterrupted cycles assigned to the drive by the manufacturer
3.106
biased-off switch
hold to run device that initiates and maintains the drive movement only as long as the manual
control is actuated
4 General requirement
This clause of Part 1 is applicable.

– 10 – IEC 60335-2-97:2016 © IEC 2016
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.10 Addition:
When a test has to be carried out with a driven part, the driven part specified for installation
with the drive that gives the most unfavourable conditions for the test is used. The drive is
adjusted in accordance with the instructions.
The driven part may be simulated by an artificial load.
NOTE 101 An example of an artificial load for rolling driven parts is in Figure 102.
6 Classification
This clause of Part 1 is applicable except as follows.
6.2 Addition:
Drives or parts of drives exposed to outdoor conditions shall be at least IPX4.
When driven parts are exposed to outdoor conditions, drives or parts of drives covered by
the driven part shall be at least IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
Drives supplied without a driven part shall be marked with
– the rated load, in newtons (N) or in newton-metres (Nm);
– the rated operating time, in minutes, unless the drive is intended for continuous
operation.
Drives supplied with a driven part shall be marked with the rated number of operating
cycles, unless the drive is intended for continuous operation.
7.12 Addition:
The instructions for drives supplied with a driven part shall state that the rated number of
operating cycles is not to be exceeded.
The instructions shall state the substance of the following:
WARNING: Important safety instructions. It is important for the safety of persons to
follow these instructions. Save these instructions.
The instructions shall include the substance of the following where applicable:
– do not allow children to play with fixed controls. Keep remote controls away from children;
– frequently examine the installation for imbalance and signs of wear or damage to cables
springs and fixings. Do not use if repair or adjustment is necessary;

– details on how to use any manual release;
– when operating a biased-off switch, make sure that other persons are kept away;
– do not operate when maintenance, such as window cleaning, is being carried out in the
vicinity.
The instructions for automatically controlled drives shall state the substance of the following:
Disconnect the drive from the supply or switch off the automatic controls when maintenance,
such as window cleaning, is being carried out in the vicinity.
7.12.1 Addition:
The installation instructions shall state the substance of the following:
WARNING: Important safety instructions. Follow all instructions since incorrect
installation can lead to severe injury.
The installation instructions shall indicate the type of driven part for which the drive is
intended to be used.
They shall specify the mechanical parts necessary to couple the drive to the driven part.
NOTE 101 Mechanical parts to take account of variations in the driven part can be included in a website,
catalogue or similar reference.
The installation instructions shall state the substance of the following where applicable:
– before installing the drive, remove any unnecessary cords or components and disable any
equipment not needed for powered operation;
– install the actuating member of any manual release at a height less than 1,8 m;
– that the actuating member of a biased-off switch is to be located within direct sight of the
driven part but away from moving parts. It is to be installed at a minimum height of 1,5 m;
– information if the drive is intended to be installed at a height of at least 2,5 m above floor
level or other access level.
For drives supplied without a driven part, the installation instructions shall state the
substance of the following:
– that the characteristics of the driven part must be compatible with the rated load and
rated operating time;
– the minimum tube diameter needed to insert tubular drives;
– how to assemble the driven part and how to adjust the controls.
The installation instructions for awnings shall state that a horizontal distance of at least 0,4 m
is to be maintained between the fully unrolled driven part and any permanent object.
7.15 Modification:
The marking of tubular drives may be concealed after installation.
8 Protection against access to live parts
This clause of Part 1 is applicable except as follows.
8.2 Modification:
– 12 – IEC 60335-2-97:2016 © IEC 2016
Basic insulation and parts separated from live parts by basic insulation may be touched
during adjustment, if a tool is needed to gain access to the adjustment means.
9 Starting of motor-operated appliances
This clause of Part 1 is not applicable.
10 Power input and current
This clause of Part 1 is applicable except as follows.
10.1 Modification:
Instead of determining the mean value, the maximum value of power input is determined, the
effect of inrush currents being ignored.
10.2 Modification:
Instead of determining the mean value, the maximum value of the current is determined,
inrush currents being ignored.
11 Heating
This clause of Part 1 is applicable except as follows.
11.7 Replacement:
Drives for continuous operation are operated for consecutive cycles until steady conditions
are established.
Other drives are operated as follows:
– drives supplied without a driven part are operated without rest periods for the rated
operating time but for not less than 4 min;
– drives supplied with a driven part are operated without rest periods for the rated number
of operating cycles but for not less than two cycles of operation.
12 Void
13 Leakage current and electric strength at operating temperature
This clause of Part 1 is applicable.
14 Transient overvoltages
This clause of Part 1 is applicable.
15 Moisture resistance
This clause of Part 1 is applicable except as follows.
15.1.2 Addition:
Tubular drives are installed in a tube that is open at both ends and has the largest diameter
specified in the instructions. The tube has a length twice that of the motor and is mounted on
a support as in normal use. The support is rotated at a speed of 1 r/min.
Tubular drives with a rolling driven part are tested with the driven part fully extended. At the
end of the test the mains supply is reconnected and the driven part is fully retracted.
16 Leakage current and electric strength
This clause of Part 1 is applicable.
17 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable.
18 Endurance
This clause of Part 1 is not applicable.
19 Abnormal operation
This clause of Part 1 is applicable except as follows.
19.10 Addition:
Drives for vertically moving driven parts, instead of being operated with the lowest possible
load for 1 min, are operated for one downward run.
19.11.4.8 Modification:
Replace the second paragraph by the following:
The drive shall either continue to move in the same direction of movement in its operating
cycle at which the voltage decrease occurred or a manual operation shall be required to
restart it.
19.13 Addition:
After each test it shall stop with the driven part in a safe position after a maximum of one
cycle of operation, or if the drive can still be operated normally it shall comply with the

requirements of 20.101 to 20.104.
19.101 Drives, other than those for continuous operation, are supplied at rated voltage and
operated continuously under normal operation.
During the test, the winding temperature shall not exceed the values specified in 19.9.
20 Stability and mechanical hazards
This clause of Part 1 is applicable except as follows.
20.2 Addition:
– 14 – IEC 60335-2-97:2016 © IEC 2016
Moving parts of drives intended to be installed at a height of at least 2,5 m above the ground
or other access level are considered to be positioned so that adequate protection is provided
against personal injury in normal use.
20.101 Rolling driven parts shall be prevented from unrolling in a hazardous manner.
Compliance is checked by the following test, which is carried out with the drive disconnected
from the supply mains.
The drive is loaded with twice the rated load for 30 min. If the drive is supplied with a driven
part, the load is applied to the driven part and is equal to the highest force exerted by it.
NOTE The highest force is determined with the driven part in the most unfavourable position.
Spring-controlled driven parts are fully retracted and a force equal to the mass of the driven
part is applied in the unrolling direction for 30 min.
The driven part shall not move faster than 150 mm/s.
The test is repeated with the drive supplied at 0,85 times rated voltage.
20.102 Drives shall prevent the driven part from unrolling in a hazardous manner due to a
reduction of the supply voltage.
Compliance is checked by the following test.
The drive, with the driven part approximately half unrolled, is supplied at 0,85 times rated
voltage and operated until the driven part is fully unrolled. The driven part shall not unroll in
an uncontrolled manner.
After 15 s, the driven part is retracted.
The drive is then supplied at 0,9 times rated voltage and started 10 times from different
positions in the rolling direction so as to retract the driven part. The drive is allowed to come
to rest between successive starts.
The drive shall retract the driven part to the fully rolled position each time and protective
devices shall not operate.
20.103 The actuation of a control to stop the movement of the drive shall be effective.
Compliance is checked by the following test.
The drive is supplied at rated voltage and operated under normal operation in each
direction and the control is then actuated.
The driven part shall not move more than 100 mm before stopping.
NOTE The release of a biased-off switch is considered to be actuation.
20.104 Drives shall operate so that injury is prevented during movement of the driven part.
This requirement is considered to be met if the drive is controlled by a fixed biased-off
switch only or if the driven part at any point in travel is at a height of at least 1,8 m from the
ground or any access point. This requirement is also considered to be met when the driven
part is made of soft material and any rigid part of the drive is installed at 1,8 m above ground
or any access level.
For drives for rolling driven parts, compliance is checked by inspection, by measurement or
by the tests of 20.104.1, or 20.104.2 or 20.104.3.
For drives for horizontally moving driven parts, compliance is checked by inspection, by
measurement or by the tests of 20.104.4.
Drives, intended to be used with a vertically moving driven part having openings in which a
50 mm diameter cylinder can be inserted, are subjected to the opening test of 20.104.5.
Forces are measured by means of an instrument that incorporates a rigid plate having a
diameter of 80 mm and a spring having a ratio of 500 N/mm ± 50 N/mm. The spring acts on a
sensing element that is connected to an amplifier having a rise and fall time not exceeding
5 ms.
20.104.1 The drive is supplied at rated voltage and operated under normal operation in
the unrolling direction. The force exerted by the bottom edge of the driven part is measured
at the centre of the driven part at 100 mm and 400 mm above the fully unrolled position.
The force shall not exceed
– 25 N, for more than 5 s;
– 150 N, for more than 0,5 s.
20.104.2 The drive is installed with the driven part assembled in a rigid frame and
positioned vertically. The bottom edge of the driven part is positioned approximately 160 mm
from the fully unrolled position. A force of 150 N is applied upwards to the bottom edge.
The displacement shall be at least 40 mm.
20.104.3 The drive is supplied at rated voltage and operated under normal operation in
the unrolling direction. An obstacle is placed at the centre of the driven part,160 mm above
the fully unrolled position. When the driven part reaches the obstacle, the drive shall stop or
reverse the movement of the driven part. The force shall not exceed
– 250 N during the first 2 s;
– 150 N during a further period of 3 s;
– 25 N thereafter.
20.104.4 The drive is supplied at rated voltage and operated under normal operation in
one direction. An obstacle is placed in the path of the leading edge and any counter opposing
edges at a height equal to the middle of the driven part.
The force measured between the leading edge and any counter opposing edge at gaps of
50 mm and 500 mm shall not exceed:
– 250 N during the first 2 s;
– 150 N during a further period of 3 s;
– 25 N thereafter.
20.104.5 The drive is supplied at rated voltage and operated to open the driven part from
the closed position, the driven part being loaded with a mass of 20 kg ± 0,5 kg.
The mass, having dimensions of approximately 200 mm × 200 mm × 200 mm, is fixed to the
driven part in the most unfavourable place, with one edge adjacent to the bottom edge of the
driven part.
If the bottom edge of the driven part moves more than 500 mm, the movement of the driven
part shall stop before the test piece comes into contact with a counter-opposing edge.

– 16 – IEC 60335-2-97:2016 © IEC 2016
20.105 During the movement of the drive in either direction, the actuation of a manual
control shall stop the movement if there is no separate button for the stop function.
If the drive has a single button for controlling the movement, further actuation shall reverse
the direction of movement.
If the drive has three buttons for controlling the movement, one button shall be a stop button.
These requirements do not apply to controls affecting automatic modes of operation.
Any button that has a stop function shall not require a key to stop the drive.
Compliance is checked by a manual test.
21 Mechanical strength
This clause of Part 1 is applicable.
22 Construction
This clause of Part 1 is applicable except as follows.
22.40 Not applicable.
22.46 Addition:
If compliance with the requirements in Clause 20 relies on the operation of a programmable
electronic circuit, the software shall contain measures to control the fault/error conditions
specified in Table R.1.
22.101 It shall only be possible to make adjustments that could affect compliance with this
standard by means of a tool or by use of a code.
Compliance is checked by inspection.
23 Internal wiring
This clause of Part 1 is applicable.
24 Components
This clause of Part 1 is applicable.
25 Supply connection and external flexible cords
This clause of Part 1 is applicable except as follows.
25.5 Addition:
Type Z attachment is allowed.
25.7 Addition:
The supply cord of drives for outdoor use shall be polychloroprene sheathed and not be
lighter than ordinary polychloroprene sheathed flexible cord (code designation 60245 IEC 57).
26 Terminals for external conductors
This clause of Part 1 is applicable.
27 Provision for earthing
This clause of Part 1 is applicable.
28 Screws and connections
This clause of Part 1 is applicable.
29 Clearances, creepage distances and solid insulation
This clause of Part 1 is applicable.
30 Resistance to heat and fire
This clause of Part 1 is applicable except as follows.
30.2 Addition:
For drives operated by a biased-off switch, 30.2.2 is applicable.
For other drives, 30.2.3 is applicable.
31 Resistance to rusting
This clause of Part 1 is applicable except as follows.
Addition:
For parts intended to be installed outdoors, compliance is checked by the salt mist test
of IEC 60068-2-52, severity 2 being applicable.
Before the test, coatings are scratched by means of a hardened steel pin, the end of which
has the form of a cone with an angle of 40°. Its tip is rounded with a radius of
0,25 mm ± 0,02 mm. The pin is loaded so that the force exerted along its axis is 10 N ± 0,5 N.
The scratches are made by drawing the pin along the surface of the coating at a speed of
approximately 20 mm/s. Five scratches are made at least 5 mm apart and at least 5 mm from
the edges.
After the test, the drive shall not have deteriorated to such an extent that compliance with this
standard, in particular with Clauses 8 and 27, is impaired. The coating shall not be broken
and shall not have loosened from the metal surface.
32 Radiation, toxicity and similar hazards
This clause of Part 1 is applicable.

– 18 – IEC 60335-2-97:2016 © IEC 2016
IEC IEC
a b
IEC
IEC
c d
IEC IEC
e f
IEC
IEC
h
g
IEC
IEC
i
j
Key
a shutter f venetian blind
b grille g curtains
c awning h projection screen
d folding awning i swing shutter
e blind j sliding shutter
Figure 101 – Examples of types of driven parts

≥ 0,9 m
D
C
= = =
F/2 F/2
IEC
The applied load (F), in newtons, is given by:
2 000 T
r
D + D
t c
where
T is the rated load in Nm;
r
D is the tube diameter, in mm;
t
D is the cord diameter, in mm.
c
NOTE 1 D is the smallest diameter specified in the instructions.
t
NOTE 2 The load moves through a height of 2 m.
NOTE 3 D is measured under load.
c
Figure 102 – Example of test apparatus without a driven part for drives
for rolling driven parts
D
t
– 20 – IEC 60335-2-97:2016 © IEC 2016
Annexes
The annexes of Part 1 are applicable except a
...