ISO/FDIS 8528-13
(Main)Reciprocating internal combustion engine driven alternating current generating sets — Part 13: Safety
Reciprocating internal combustion engine driven alternating current generating sets — Part 13: Safety
ISO 8528-13:2016 specifies the safety requirements for reciprocating internal combustion (RIC) engine driven generating sets up to 1 000 V consisting of an RIC engine, an alternating current (AC) generator including the additional equipment required for operating, e.g. controlgear, switchgear, auxiliary equipment. It is applicable to generating sets for land and marine use (domestic, recreational and industrial application). It is not applicable to generating sets used on board of seagoing vessels and mobile offshore units as well as on aircraft or to propel road vehicles and locomotives. NOTE This part of ISO 8528 does not apply to arc welding equipment (IEC 60974 series). The special requirements needed to cover operation in potentially explosive atmospheres are not covered in this part of ISO 8528. The hazards relevant to RIC engine driven generating sets are identified in Annex A. ISO 8528-13:2016 deals with the special requirements of test and safety design which should be observed in addition to the definitions and requirements in ISO 8528-1, ISO 8528-2, ISO 8528-3, ISO 8528-4, ISO 8528-5 and ISO 8528-6, where applicable. It specifies safety requirements in order to protect the user from danger.
Groupes électrogènes à courant alternatif entraînés par moteurs alternatifs à combustion interne — Partie 13: Sécurité
ISO 8528-13:2016 précise les prescriptions de sécurité applicables aux groupes électrogènes jusqu'à 1 000 V entraînés par moteurs alternatifs à combustion interne, constitués d'un moteur alternatif à combustion interne, d'un générateur de courant alternatif, y compris les équipements supplémentaires requis pour leur fonctionnement, par exemple appareillage de commande et de coupure et équipement auxiliaire. Elle est applicable aux groupes électrogènes utilisés pour des applications terrestres et marines (applications domestiques, de loisirs et industrielles). Elle n'est pas applicable aux groupes électrogènes utilisés sur les navires de haute mer et les unités mobiles «off shore» ainsi qu'à bord des aéronefs ou pour la propulsion de véhicules terrestres et de locomotives. NOTE La présente partie de l'ISO 8528 ne s'applique pas au matériel de soudage à l'arc (série IEC 60974). Les prescriptions particulières nécessaires pour un fonctionnement en atmosphères potentiellement explosibles ne sont pas couvertes par la présente partie de l'ISO 8528. Les phénomènes dangereux relatifs aux groupes électrogènes entraînés par moteurs alternatifs à combustion interne sont identifiés dans l'Annexe A. ISO 8538-13:2016 traite des prescriptions particulières d'essai et de conception relative à la sécurité qu'il convient de respecter en complément des définitions et des prescriptions spécifiées dans les normes ISO 8528‑1, ISO 8528‑2, ISO 8528‑3, ISO 8528‑4, ISO 8528‑5 et ISO 8528‑6, le cas échéant. Elle spécifie les prescriptions de sécurité visant à protéger l'utilisateur de tout danger.
General Information
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Standards Content (Sample)
FINAL DRAFT
International
Standard
ISO/TC 70
Reciprocating internal combustion
Secretariat: SAC
engine driven alternating current
Voting begins on:
generating sets —
2025-12-04
Part 13:
Voting terminates on:
2026-01-29
Safety
Groupes électrogènes à courant alternatif entraînés par moteurs
alternatifs à combustion interne —
Partie 13: Sécurité
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Reference number
FINAL DRAFT
International
Standard
ISO/TC 70
Reciprocating internal combustion
Secretariat: SAC
engine driven alternating current
Voting begins on:
generating sets —
Part 13:
Voting terminates on:
Safety
Groupes électrogènes à courant alternatif entraînés par moteurs
alternatifs à combustion interne —
Partie 13: Sécurité
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
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ii
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 3
4 Safety requirements and/or protective/risk reduction measures and verification . 5
4.1 General .5
4.2 Starting system .5
4.2.1 Requirements .5
4.2.2 Verification .5
4.3 Stopping .5
4.3.1 Requirements .5
4.3.2 Verification .6
4.4 Emergency stopping .6
4.4.1 Requirements .6
4.4.2 Verification .6
4.5 Control devices .7
4.5.1 Design, safety and mechanical strength .7
4.5.2 Identification .8
4.5.3 Accessibility .8
4.6 Monitoring devices .8
4.6.1 Requirements .8
4.6.2 Verification .9
4.7 Warning devices .9
4.7.1 Requirements .9
4.7.2 Verification .9
4.8 Guarding .9
4.8.1 General .9
4.8.2 Guarding against mechanical hazards .10
4.8.3 Guarding against hot surfaces .10
4.9 Stability for low power generating sets .18
4.9.1 Not in operation .18
4.9.2 In operation .18
4.10 Lighting .18
4.10.1 Requirements .18
4.10.2 Verification .18
4.11 Handling .18
4.11.1 Requirements .18
4.11.2 Verification .19
4.12 Mechanical strength .19
4.12.1 Requirements .19
4.12.2 Verification .19
4.13 Fire protection . 20
4.13.1 General . 20
4.13.2 Requirements . 20
4.13.3 Verification . 20
4.14 Hoses, pipes, and electrical harnesses of the RIC engine . 20
4.14.1 Requirements . 20
4.14.2 Verification .21
4.15 Electrical equipment .21
4.15.1 General .21
4.15.2 Degree of protection .21
4.15.3 Insulation .24
4.15.4 Protective bonding circuit .24
iii
4.15.5 Other electrical equipment . 26
4.16 Noise . 26
4.16.1 Requirements . 26
4.16.2 Verification . 26
4.17 Access systems . 26
4.17.1 Requirements . 26
4.17.2 Verification . 26
4.18 Access to service points.27
4.18.1 Requirements .27
4.18.2 Verification .27
4.19 Gaseous and particulate exhaust emissions .27
4.19.1 Requirements .27
4.19.2 Verification .27
4.20 Drainage .27
4.20.1 Requirements .27
4.20.2 Verification .27
5 Information for use .27
5.1 Operating and maintenance instruction .27
5.1.1 Requirements .27
5.1.2 Verification . 29
5.2 Safety labels . 29
5.2.1 Requirements . 29
5.2.2 Verification . 29
5.3 Marking . 30
5.3.1 Requirements . 30
5.3.2 Verification . 30
Annex A (normative) List of significant hazards .31
Annex B (normative) Application of IEC 60204-1:2016/A1: 2021 for generating sets .33
Annex C (normative) Application of IEC 60204-11:2018 for generating sets .42
Annex D (normative) Instruction manual — Safety guide additional requirements for low-
power generating sets for use by layperson . 47
Annex ZA (informative) Relationship between this document and the essential requirements
of Directive 2006/42/EC aimed to be covered .49
Bibliography .50
iv
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available
at www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights. Any
trade name used in this document is information given for the convenience of users and does not constitute
an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 70, Internal combustion engines, in
collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 270,
Internal combustion engines, in accordance with the Agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 8528-13:2016), which has been technically
revised.
The main changes are as follows:
— scope has been modified;
— normative references have been updated;
— definition of «high voltage electrical equipment» has been added;
— Clause 6 has been renumbered to Clause 4;
— Annex C has been updated and renumbered as Annex D ;
— new Annex C has been added.
A list of all parts in the ISO 8528 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
v
Introduction
This document is a type-C standard as stated in ISO 12100:2010.
This document is of relevance, in particular, for the following stakeholder groups representing the market
players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organisations, market surveillance, etc.).
Others can be affected by the level of machinery safety achieved with the means of the document by the
above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in the case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this document.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are
covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or -B
standards, the requirements of this type-C standard take precedence over the requirements of the other
standards for machines that have been designed and built according to the requirements of this type-C
standard.
vi
FINAL DRAFT International Standard ISO/FDIS 8528-13:2025(en)
Reciprocating internal combustion engine driven alternating
current generating sets —
Part 13:
Safety
1 Scope
This document specifies the safety requirements for reciprocating internal combustion (RIC) engine driven
generating sets up to 1 000 V alternating current (AC) or 1 500 V direct current (DC) and voltages above
1 000 V (AC) and not exceeding 36 kV consisting of an RIC engine, an AC generator including the additional
equipment required for operating, e.g. controlgear, switchgear, auxiliary equipment.
This document is applicable to generating sets for land and marine use (domestic, recreational and industrial
application). This document is not applicable to generating sets used on board of seagoing vessels and mobile
offshore units as well as on aircraft or to propel road vehicles and locomotives.
This document is not applicable to gensets and components manufactured before the date of its publication.
NOTE This document does not apply to arc welding equipment (IEC 60974 series).
This document does not specify the special requirements needed to cover operation in potentially explosive
atmospheres and is not applicable for such environments.
The hazards relevant to RIC engine driven generating sets are identified in Table A.1.
This document deals with the special requirements of test and safety design which are observed in addition
to the definitions and requirements in ISO 8528-1:2018, ISO 8528-2:2018, ISO 8528-3:2020, ISO 8528-4:2025,
ISO 8528-5:2025, ISO 8528-6:2023 and ISO 8528-10:2022, where applicable. This document specifies safety
requirements in order to protect the user from danger.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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.
ISO 2261:1994, Reciprocating internal combustion engines — Hand-operated control devices — Standard
direction of motion
ISO 6826:2022, Reciprocating internal combustion engines — Fire protection
ISO 8528-1:2018, Reciprocating internal combustion engine driven alternating current generating sets — Part
1: Application, ratings and performance
ISO 8528-4:2025, Reciprocating internal combustion engine driven alternating current generating sets — Part
4: Controlgear and switchgear
ISO 8528-5:2025, Reciprocating internal combustion engine driven alternating current generating sets — Part
5: Generating sets
ISO 8528-10:2022, Reciprocating internal combustion engine driven alternating current generating sets — Part
10: Measurement of airborne noise
ISO 11429:1996, Ergonomics — System of auditory and visual danger and information signals
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13732-1:2006, Ergonomics of the thermal environment — Methods for the assessment of human responses
to contact with surfaces — Part 1: Hot surfaces
ISO 13850:2015, Safety of machinery — Emergency stop function — Principles for design
ISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by upper and
lower limbs
ISO 14122-2:2016, Safety of machinery — Permanent means of access to machinery — Part 2: Working platforms
and walkways
ISO 14314:2004, Reciprocal internal combustion engines — Recoil starting equipment — General safety
requirements
ISO 15534-2:2000, Ergonomic design for the safety of machinery — Part 2: Principles for determining the
dimensions required for access openings
IEC 60034-1:2022, Rotating electrical machines — Part 1: Rating and performance
IEC 60034-5:2020, Rotating electrical machines — Part 5: Degrees of protection provided by the integral design
of rotating electrical machines (IP code) — Classification
IEC 60204-1:2016/A1: 2021, Safety of machinery — Electrical equipment of machines — Part 1: General
requirements
IEC 60204-11:2018, Safety of machinery — Electrical equipment of machines — Part 11: Requirements for
equipment for voltages above 1 000 V AC or 1 500 V DC and not exceeding 36 kV
IEC 60335-1:2020/A11: 2023, Household and similar electrical appliances — Safety — Part 1: General
requirements
IEC 60364-4-41:2005, Low-voltage electrical installations — Part 4-41: Protection for safety — Protection
against electric shock
IEC 60073:2002, Basic and safety principles for man-machine interface, marking and identification — Coding
principles for indicators and actuators
IEC 61310-1:2007, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual,
acoustic and tactile signals
IEC 61310-2:2017, Safety of machinery — Indication, marking and actuation — Part 2: Requirements for
marking
IEC 61936-1:2021, Power installations exceeding 1 kV AC and 1,5 kV DC — Part 1 : AC
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)
IEC 60071-2:2023, Insulation co-ordination — Part 2: Application guidelines
ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and construction of fixed
and movable guards
IEC 62271-100:2021, High-voltage switchgear and controlgear — Part 100 : alternating-current circuit-breakers
IEC 62271-200:2021, High-voltage switchgear and controlgear — Part 200: AC metal-enclosed switchgear and
controlgear for rated voltages above 1 kV and up to and including 52 kV
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
layperson
person who does not necessarily recognize potential danger resulting from electricity, moving parts or hot
parts
Note 1 to entry: The layperson has normally a lack of training, knowledge and experience.
3.2
close proximity
30 mm space immediately around the operating and adjusting controls and carrying handles, including their
whole movement range
3.3
rated power
electric power assigned by the manufacturer
Note 1 to entry: The electrical power assigned according to ISO 8528-1:2018, Clause 14 (COP, PRP, LTP, ESP, DCP),
except for low power generating sets to ISO 8528-8:2016, 3.3 (COP).
3.4
low power generating sets
power generating sets which are determined by specific features:
Note 1 to entry: The specific features are:
— low power is taken to mean rated power of a magnitude up to 10 kW/50 Hz, 12 kW/60 Hz;
— users normally are layperson;
— complete generating set is usually transportable, or mobile;
— electrical output is connected by means of plugs, sockets and screwed terminal except for extra low voltages;
— generating set is ready for use without any additional installation work by the user.
Note 2 to entry: See ISO 8528-8:2016, Clause 1.
3.5
frame contour
outmost of low power generating sets, consisting of robust parts
Note 1 to entry: Example of parts include the frame made of pipe, the fuel tank, the handle, the control box.
3.6
operator interface
means by which information is communicated between a human operator(s) and the control system (e.g.
LCD, indicating lights, push-buttons, horns, alarms)
Note 1 to entry: The operator interface is sometimes referred to as the human-machine interface (HMI).
3.7
control device
device connected into the control circuit (circuit used for the control, including monitoring) and used for
controlling the operation of the machine (e.g. relay, contactor, position sensor PLC module, actuator…)
3.8
controlgear
switching device and its combination with associated control, measuring, protective and regulating
equipment, intended in principle for the control of electrical energy consuming equipment
3.9
enclosure
part providing protection of equipment against external influences and, in any direction, protection against
direct contact
Note 1 to entry: See also definition 3.14 "canopy".
3.10
electrical equipment
material, fitting, device, component, appliance, fixture, apparatus, and the like using electric currents or
electromagnetic fields, except for the safety extra low voltage circuits
3.11
control
operation consisting of interacting by touching the machine in the places defined for this purpose during the
starting, functioning and stopping phases
3.12
monitoring
operation consisting of observing the operating parameters of the machine during its operation while
maintaining appropriate safety distances depending on the risks identified
3.13
maintenance
all operations intended to prevent or repair breakdowns that occur on the machine
Note 1 to entry: The recommendations and schedule of the machine manufacturer are followed. Maintenance is carried
out with the machine stopped and in electrical safety.
3.14
canopy
element ensuring the protection of the complete generating set against external influences such as weather
and solid foreign objects
3.15
protective extra-low voltage
PELV
voltage to protect persons against electric shock from indirect contact and limited area direct contact
Note 1 to entry: PELV circuits shall satisfy the following condition. The nominal voltage shall not exceed:
— 25 V AC r.m.s. or 60 V ripple-free DC when the equipment is normally used in dry locations and when large area
contact of live parts with the human body is not expected; or
— 6 V AC r.m.s. or 15 V ripple-free DC in all other cases.
Note 2 to entry: "Ripple-free" is conventionally defined for a sinusoidal ripple voltage as a ripple content of not more
than 10 % r.m.s.
Note 3 to entry: See IEC 60204-1:2016/A1: 2021, 6.4.1 a).
4 Safety requirements and/or protective/risk reduction measures and verification
4.1 General
Machinery shall conform with the safety requirements and/or protective measures/risk reduction measures
of this clause.
In addition, the machine shall be designed and assessed in accordance with the principles of ISO 12100:2010
for relevant but not significant hazards which are not dealt with by this document.
The hazards relevant to RIC engine driven generating sets that shall be accounted for in order to prevent
personal injury are listed in Table A.1.
4.2 Starting system
4.2.1 Requirements
Starting systems can be triggered manually or automatically.
Electrical starting systems normally operate at voltages of 24 V or below. Electrical starting systems above
24 V are not dealt with in this document and the installer of the engine shall ensure safe operation after
connecting the engine to the driven machinery.
For engines with compressed air starting, the starting pneumatic system shall conform with the installation
requirements and with the operation and safety information specified in the manuals provided by the
starting system components suppliers.
— Starting handles shall have sufficient clearance from the mounting surface to ensure safe turning.
— Diesel engines with a manual starter shall have a decompression facility which shall not be required to
be hand-held during cranking.
The only permissible hand starting systems are crank handle (as defined above) and recoil starting devices
in accordance with ISO 14314:2004. The marking required in ISO 14314:2004, 7.3 shall not apply.
4.2.2 Verification
Conformance with the requirements shall be verified by inspection and testing of the starting systems.
4.3 Stopping
4.3.1 Requirements
4.3.1.1 Normal stopping
All generating sets shall have a normal switch or other normal stopping device which can be manually
or automatically actuated. Stopping controls shall remain in the stop position when operated. This shall
operate by a device ensuring the cutting off of the fuel or the ignition (for spark ignition engines) supply.
4.3.1.2 Stopping in case of failure
Generating sets except low power generating sets shall be provided with an automatically actuated stopping
device in case of failure.
This device shall monitor one or more signals of the generating set and if these signals are out of the
allowable range, it shall trigger the automatic stop.
The main signals used to actuate automatic stopping may include, but not be limited to, the following:
a) for the RIC engine
1) overspeed;
2) low lubricating oil pressure;
3) high coolant temperature; and
4) low coolant level;
b) for the generator
1) excessive overvoltage; and
2) overload.
These signals or other measures used to actuate automatic stopping shall be specified depending on the
application.
4.3.2 Verification
Normal stopping shall be verified by inspection and testing of the stopping device in manual and in automatic
modes (if provided in the application).
Automatic stopping in case of failure shall be verified by testing the action of typical failure modes in
operating conditions (an appropriate method shall be used to create typical failure conditions, e.g. manual
triggering, short-circuiting of contacts).
4.4 Emergency stopping
4.4.1 Requirements
Emergency stopping devices are required for remote controlled generating sets and generating sets with
a canopy or container accessible by persons. In accordance with the risk assessment in ISO 12100:2010,
6.3.5.2, an emergency stopping device is not required for low power generating sets, as it shall not lessen the
risk by reducing the stopping time.
Emergency stopping devices shall be actuated manually. As for normal stopping, emergency stopping shall
operate by a device ensuring the cutting off of the fuel supply or ignition (for spark ignition engines). This
device should include an air supply cut-off.
Emergency stopping devices shall conform with IEC 60204-1:2016/A1: 2021, 10.7.
Emergency stopping devices shall also meet the requirements of ISO 13850:2015, category 0, and the reset
shall not initiate a restart or any hazardous conditions.
Manually actuated emergency stopping devices shall be located inside and outside the canopy or container
in which a generating set is located and which is accessible for personnel to carry out maintenance or control
operations when generating sets are in operation.
For canopies, containers or where there is no physical access for personnel at least one emergency stopping
devices shall be located outside.
4.4.2 Verification
Emergency stopping devices shall be verified by inspection and testing in operating conditions.
4.5 Control devices
4.5.1 Design, safety and mechanical strength
4.5.1.1 Requirements
Control devices for the RIC engine of the generating set shall meet the following requirements:
— hand controls shall be designed to withstand 1,2× the maximum actuating forces given in Table 1;
— for handles, knobs, grips, levers and similar devices, requirements and tests shall be in accordance with
IEC 60335-1:2020/A11: 2023, 22.12;
— controls shall act positively and smoothly and without delay or unexpected action and be in accordance
with ISO 2261:1994;
— the surface temperature of the controls that shall be manually actuated while the engine is running shall
be within the following limits in accordance with ISO 13732-1:2006 for a contact time of 10 s:
— 55 °C for metallic surfaces; and
— 70 °C for non-metallic surfaces;
— sharp edges or corners on, or close proximity to manual controls shall be removed. Edges shall have a
chamfer of at least 0,5 mm.
Table 1 — Clearance between controls
Operation by Spacing Maximum actuating force
(mm) (N)
Finger tip 10 10
Finger grasp
— toggles 20 50
— knobs 20 50
Hand
— upward 50 400
— fore-aft 50 300
4.5.1.2 Verification
Control devices of the RIC engine shall be verified by inspection and testing.
Control devices of the generating sets shall be verified in accordance with IEC 60204-1:2016/AMD1: 2021,
10.1 and 10.2.
For surface temperature measurement of the control devices (RIC engines and generating sets), the following
method shall be conducted:
a) the generating set shall be operated at its rated power until the surface temperatures stabilize;
b) the test shall be conducted in a well-ventilated location not directly exposed to sunlight;
c) if the test is conducted at an ambient temperature outside of the nominal (20 ± 3) °C the reported
temperatures shall be corrected by the Formula (1):
TT T 20 (1)
cr a
where
T is the corrected temperature, in °C:
c
T is the reported temperature, in °C:
r
T is the ambient temperature, in °C.
a
4.5.2 Identification
4.5.2.1 Requirements
The control devices of the RIC engines shall be identified according to the function they perform, or
their function shall be explained in the operating manual. They shall be identified in accordance with
IEC 61310-2:2017. Colour coding shall be in accordance with IEC 60073:2002.
The marking on the engine controls shall be legible throughout the engine life.
Identification should preferably be by symbols in accordance with ISO 7000 DB: 2019 or ISO 8999:2001 or, if
there are no suitable symbols, by words placed on the control or adjacent to it. Design, location and marking
principles shall be in accordance with IEC 61310-1:2007.
Emergency shut-off control handles or buttons shall be prominently located and shaped as well as being
coloured red, in order to be identified among the other controls.
The control devices on electrical equipment shall conform with the requirements of IEC 60204-1:2016/A1:
2021, 10.1 and 10.2 with the exception as given in Table B.1.
4.5.2.2 Verification
Conformance with the requirements shall be verified by inspection.
4.5.3 Accessibility
4.5.3.1 Requirements
Controls should preferably be grouped.
Controls should be located within reach of the operator. Access shall be provided in accordance with
ISO 15534-2:2000. The spacing between controls shall be sufficient to allow operation without unintentional
actuation of adjacent controls. For the minimum clearances between controls recommended for the given
maximum actuating force, see Table 1.
4.5.3.2 Verification
Conformance with the requirements shall be verified by inspection and measurement.
4.6 Monitoring devices
4.6.1 Requirements
4.6.1.1 Instrument identification
Monitoring instruments shall be identified on or adjacent to them, preferably by a symbol in accordance
with ISO 8999:2001 or a descriptive wording for the system being monitored.
4.6.1.2 Instrument visibility
Monitoring instruments should be visible to the operator. They shall be illuminated for nighttime or indoor
operation so that they are legible from the operator’s position where the application requires it.
...
ISO/TC 70
Secretariat: SAC
Date: 2025-10-0912-02
Reciprocating internal combustion engine driven alternating current
generating sets —
Part 13:
Safety
Groupes électrogènes à courant alternatif entraînés par moteurs alternatifs à combustion interne —
Partie 13: Sécurité
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ISO #####-#:####(X)
FDIS stage
2 © ISO #### – All rights reserved
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
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Published in Switzerland
© ISO 2025 – All rights reserved
iii
ISO/CD FDIS 8528-13:20242025(en)
Contents
Foreword . vii
Introduction . ix
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 3
4 Safety requirements and/or protective/risk reduction measures and verification . 5
5 Information for use . 33
Annex A (normative) List of significant hazards . 37
Annex B (normative) Application of IEC 60204-1:2016/A1:2021 for generating sets . 40
Annex C (normative) Application of IEC 60204-11:2018 for generating sets . 53
Annex D (normative) Instruction manual — Safety guide additional requirements for low-
power generating sets for use by layperson . 60
Annex ZA (informative) Relationship between this document and the essential requirements of
Directive 2006/42/EC aimed to be covered . 63
Bibliography . 66
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 3
4 Safety requirements and/or protective/risk reduction measures and verification . 5
4.1 General. 5
4.2 Starting system . 5
4.2.1 Requirements . 5
4.2.2 Verification . 6
4.3 Stopping. 6
4.3.1 Requirements . 6
4.3.2 Verification . 6
4.4 Emergency stopping . 6
4.4.1 Requirements . 6
4.4.2 Verification . 7
4.5 Control devices . 7
4.5.1 Design, safety and mechanical strength . 7
4.5.2 Identification . 9
4.5.3 Accessibility . 9
4.6 Monitoring devices . 9
4.6.1 Requirements . 9
4.6.2 Verification . 10
4.7 Warning devices . 10
4.7.1 Requirements . 10
4.7.2 Verification . 10
4.8 Guarding . 10
iv
4.8.1 General 10
4.8.2 Guarding against mechanical hazards . 10
4.8.3 Guarding against hot surfaces . 11
4.9 Stability for low power generating sets . 17
4.9.1 Not in operation. 17
4.9.2 In operation . 17
4.10 Lighting . 18
4.10.1 Requirements . 18
4.10.2 Verification . 18
4.11 Handling . 18
4.11.1 Requirements . 18
4.11.2 Verification . 18
4.12 Mechanical strength . 18
4.12.1 Requirements . 18
4.12.2 Verification . 19
4.13 Fire protection . 19
4.13.1 General 19
4.13.2 Requirements . 19
4.13.3 Verification . 20
4.14 Hoses, pipes, and electrical harnesses of the RIC engine . 20
4.14.1 Requirements . 20
4.14.2 Verification . 20
4.15 Electrical equipment. 21
4.15.1 General 21
4.15.2 Degree of protection . 21
4.15.3 Insulation . 25
4.15.4 Protective bonding circuit . 25
4.15.5 Other electrical equipment . 26
4.16 Noise . 26
4.16.1 Requirements . 26
4.16.2 Verification . 27
4.17 Access systems . 27
4.17.1 Requirements . 27
4.17.2 Verification . 27
4.18 Access to service points . 27
4.18.1 Requirements . 27
4.18.2 Verification . 27
4.19 Gaseous and particulate exhaust emissions . 27
4.19.1 Requirements . 27
4.19.2 Verification . 27
4.20 Drainage . 27
4.20.1 Requirements . 27
4.20.2 Verification . 28
5 Information for use . 28
5.1 Operating and maintenance instruction . 28
5.1.1 Requirements . 28
5.1.2 Verification . 29
5.2 Safety labels . 29
5.2.1 Requirements . 29
5.2.2 Verification . 30
5.3 Marking . 30
5.3.1 Requirements . 30
5.3.2 Verification . 31
© ISO 2025 – All rights reserved
v
ISO/CD FDIS 8528-13:20242025(en)
Annex A (normative) List of significant hazards . 32
Annex B (normative) Application of IEC 60204-1:2016/A1:2021 for generating sets . 35
Annex C (normative) Application of IEC 60204-11:2018 for generating sets . 47
Annex D (normative) Instruction manual — Safety guide additional requirements for low-
power generating sets for use by layperson . 56
Annex ZA (informative) Relationship between this document and the essential requirements of
Directive 2006/42/EC aimed to be covered . 58
Bibliography . 60
vi
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of
ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Field Code Changed
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents.www.iso.org/patents. ISO shall not be held responsible for identifying any or all such
patent rights. Any trade name used in this document is information given for the convenience of users and
does not constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
Field Code Changed
This document was prepared by Technical Committee ISO/TC 70, Internal combustion engines, in
collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 270,
Internal combustion engines, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 8528-13:2016), which has been technically
revised.
The main changes are as follows:
— — the scope has been modified;
— — the normative references have been updated;
— — the definition of «high voltage electrical equipment» has been added;
— — the Clause 6 has become Clause 4;
— — the Annex C has been updated and has become Annex D ;
— — a Clause 6 has been renumbered to 4;
— 0 has been updated and renumbered as 0 ;
— new Annex C0 has been added.
A list of all parts in the ISO 8528 series can be found on the ISO website.
© ISO 2025 – All rights reserved
vii
ISO/CD FDIS 8528-13:20242025(en)
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html. www.iso.org/members.html.
viii
Introduction
This document is a type-C standard as stated in ISO 12100:2010.
This document is of relevance, in particular, for the following stakeholder groups representing the market
players with regard to machinery safety:
— — machine manufacturers (small, medium and large enterprises);
— — health and safety bodies (regulators, accident prevention organisations, market surveillance, etc.).
Others can be affected by the level of machinery safety achieved with the means of the document by the above-
mentioned stakeholder groups:
— — machine users/employers (small, medium and large enterprises);
— — machine users/employees (e.g. trade unions, organizations for people with special needs);
— — service providers, e.g. for maintenance (small, medium and large enterprises);
— — consumers (in the case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting process
of this document.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are
covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or -B standards,
the requirements of this type-C standard take precedence over the requirements of the other standards for
machines that have been designed and built according to the requirements of this type-C standard.
© ISO 2025 – All rights reserved
ix
DRAFT International Standard ISO/FDIS 8528-13:2025(en)
Reciprocating internal combustion engine driven alternating current
generating sets — Part 13: Safety
Part 13:
Safety
1 Scope
This document specifies the safety requirements for reciprocating internal combustion (RIC) engine driven
generating sets up to 1000 1 000 V alternating current (AC) or 1500 1 500 V (DC) for direct current (DC) and
voltages above 1000 1 000 V (AC) and not exceeding 36 kV consisting of an RIC engine, an AC generator
including the additional equipment required for operating, e.g. controlgear, switchgear, auxiliary equipment.
This document is applicable to generating sets for land and marine use (domestic, recreational and industrial
application). This document is not applicable to generating sets used on board of seagoing vessels and mobile
offshore units as well as on aircraft or to propel road vehicles and locomotives.
This document is not applicable to gensets and components manufactured before the date of its publication.
NOTE This document does not apply to arc welding equipment (IEC 60974 series).
This document does not specify the special requirements needed to cover operation in potentially explosive
atmospheres and is not applicable for such environments.
The hazards relevant to RIC engine driven generating sets are identified in Table A.1.0.
This document deals with the special requirements of test and safety design which are observed in addition
to the definitions and requirements in ISO 8528-1:2018, ISO 8528-2:2018, ISO 8528-3:2020, ISO 8528-
4:2025, ISO 8528-5:2025, ISO 8528-6:2023 and ISO 8528-10:2022, where applicable. This document specifies
safety requirements in order to protect the user from danger.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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.
ISO 2261:1994, Reciprocating internal combustion engines — Hand-operated control devices — Standard
direction of motion
ISO 6826:2022, Reciprocating internal combustion engines — Fire protection
ISO 8528--1:2018, Reciprocating internal combustion engine driven alternating current generating sets — Part
1: Application, ratings and performance
ISO 8528-2:2018, Reciprocating internal combustion engine driven alternating current generating sets — Part
2: Engines
ISO 8528-3:2020, Reciprocating internal combustion engine driven alternating current generating sets — Part
3: Alternating current generators for generating sets
ISO 8528--4:2025, Reciprocating internal combustion engine driven alternating current generating sets — Part
4: Controlgear and switchgear
ISO 8528--5:2025, Reciprocating internal combustion engine driven alternating current generating sets — Part
5: Generating sets
ISO 8528-6:2023, Reciprocating internal combustion engine driven alternating current generating sets — Part
6: Test methods
ISO 8528-ISO 8528-10:2022, Reciprocating internal combustion engine driven alternating current generating
sets — Part 10: Measurement of airborne noise
ISO 8999:2001, Reciprocating internal combustion engines — Graphical symbols
ISO 11429:1996, Ergonomics — System of auditory and visual danger and information signals
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13732--1:2006, Ergonomics of the thermal environment — Methods for the assessment of human responses
to contact with surfaces — Part 1: Hot surfaces
ISO 13850:2015, Safety of machinery — Emergency stop function — Principles for design
ISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by upper and
lower limbs
ISO 14122--2:2016, Safety of machinery — Permanent means of access to machinery — Part 2: Working
platforms and walkways
ISO 14314:2004, Reciprocal internal combustion engines — Recoil starting equipment — General safety
requirements
ISO 15534--2:2000, Ergonomic design for the safety of machinery — Part 2: Principles for determining the
dimensions required for access openings
IEC 60034--1:2022, Rotating electrical machines — Part 1: Rating and performance
IEC 60034--5:2020, Rotating electrical machines — Part 5: Degrees of protection provided by the integral design
of rotating electrical machines (IP code) — Classification
IEC 60204-1:2016/A1:20232021, Safety of machinery — Electrical equipment of machines — Part 1: General
requirements
IEC 60204--11:2018, Safety of machinery — Electrical equipment of machines — Part 11: Requirements for
equipment for voltages above 1 000 V AC or 1 500 V DC and not exceeding 36 kV
IEC 60335-1:2020/A11:2023, Household and similar electrical appliances — Safety — Part 1: General
requirements
IEC 60364--4-41:2005, Low-voltage electrical installations — Part 4-41: Protection for safety — Protection
against electric shock
ISO/FDIS 8528-13:2025(en)
IEC 60073:2002, Basic and safety principles for man-machine interface, marking and identification — Coding
principles for indicators and actuators
IEC 61310--1:2007, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for
visual, acoustic and tactile signals
IEC 61310--2:2017, Safety of machinery — Indication, marking and actuation — Part 2: Requirements for
marking
IEC 61936-1:2021, Power installations exceeding 1 kV AC and 1,5 kV DC — Part 1 : AC
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)
IEC 60071-2:2023, Insulation co-ordination — Part 2: Application guidelines
ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and construction of fixed
and movable guards
IEC 62271-100:2021, High-voltage switchgear and controlgear — Part 100 : alternating-current circuit-
breakers
IEC 62271-200:2021, High-voltage switchgear and controlgear — Part 200: AC metal-enclosed switchgear and
controlgear for rated voltages above 1 kV and up to and including 52 kV
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— — ISO Online browsing platform: available at https://www.iso.org/obphttps://www.iso.org/obp
— — IEC Electropedia: available at https://www.electropedia.org/https://www.electropedia.org/
3.1 3.1
layperson
person who does not necessarily recognize potential danger resulting from electricity, moving parts or hot
parts
Note 1 to entry: The layperson has normally a lack of training, knowledge and experience.
3.2 3.2
close proximity
30 mm space immediately around the operating and adjusting controls and carrying handles, including their
whole movement range
3.3 3.3
rated power
electric power assigned by the manufacturer
Note 1 to entry: The electrical power assigned according to ISO 8528-1:2018, Clause 14 (COP, PRP, LTP, ESP, DCP),
except for low power generating sets to ISO 8528-8:2016, 3.3 (COP).
3.4 3.4
low power generating sets
power generating sets which are determined by specific features:
© ISO 2025 – All rights reserved
Note 1 to entry: The specific features are:
— — low power is taken to mean rated power of a magnitude up to 10 kW/50 Hz, 12 kW/60 Hz;
— — users normally are layperson;
— — complete generating set is usually transportable, or mobile;
— — electrical output is connected by means of plugs, sockets and screwed terminal except for extra low voltages;
— — generating set is ready for use without any additional installation work by the user.
[SOURCE:Note 2 to entry: See ISO 8528-8:2016, Clause 1].
3.5 3.5
frame contour
outmost of low power generating sets, consisting of robust parts
Note 1 to entry: Example of parts include the frame made of pipe, the fuel tank, the handle, the control box.
3.6 3.6
operator interface
means by which information is communicated between a human operator(s) and the control system (e.g. LCD,
indicating lights, push-buttons, horns, alarms)
Note 1 to entry: The operator interface is sometimes referred to as the human-machine interface (HMI).
3.7 3.7
control device
device connected into the control circuit (circuit used for the control, including monitoring) and used for
controlling the operation of the machine (e.g. relay, contactor, position sensor PLC module, actuator…)
3.8 3.8
controlgear
switching device and its combination with associated control, measuring, protective and regulating
equipment, intended in principle for the control of electrical energy consuming equipment
3.9 3.9
enclosure
part providing protection of equipment against external influences and, in any direction, protection against
direct contact. See also definition 3.14 "canopy"
3.10Note 1 to entry: See also definition Error! Reference source not found. "canopy".
3.10
electrical equipment
material, fitting, device, component, appliance, fixture, apparatus, and the like using electric currents or
electromagnetic fields, except for the safety extra low voltage circuits
3.11 3.11
control
operation consisting of interacting by touching the machine in the places defined for this purpose during the
starting, functioning and stopping phases
ISO/FDIS 8528-13:2025(en)
3.12 3.12
monitoring
operation consisting of observing the operating parameters of the machine during its operation while
maintaining appropriate safety distances depending on the risks identified
3.13 3.13
maintenance
all operations intended to prevent or repair breakdowns that occur on the machine
Note 1 to entry: The recommendations and schedule of the machine manufacturer are followed. Maintenance is carried
out with the machine stopped and in electrical safety.
3.14 3.14
canopy
element ensuring the protection of the complete generating set against external influences such as weather
and solid foreign objects
3.15
3.15
Protective Extra-Low Voltage
protective extra-low voltage
PELV
Protective Extra-Low Voltage (PELV) isvoltage to protect persons against electric shock from indirect
contact and limited area direct contact
Note 1 to entry: PELV circuits shall satisfy all of the following conditions:
condition. The nominal voltage shall not exceed:
— 25 V AC r.m.s. or 60 V ripple-free DC when the equipment is normally used in dry locations and when large area
contact of live parts with the human body is not expected; or
— 6 V AC r.m.s. or 15 V ripple-free DC in all other cases;.
NOTE : Note 2 to entry: "Ripple-free" is conventionally defined for a sinusoidal ripple voltage as a ripple content of not
more than 10 % r.m.s.
[SOURCE :Note 3 to entry: See IEC 60204-1:2016/A1:2021, 6.4.1 a)]).
4 Safety requirements and/or protective/risk reduction measures and verification
4.1 General
Machinery shall conform with the safety requirements and/or protective measures/risk reduction measures
of this clause.
In addition, the machine shall be designed and assessed in accordance with the principles of ISO 12100:2010
for relevant but not significant hazards which are not dealt with by this document.
The hazards relevant to RlCRIC engine driven generating sets that shall be consideredaccounted for in order
to prevent personal injury are listed in Table A.1.0.
© ISO 2025 – All rights reserved
4.2 Starting system
4.2.1 Requirements
Starting systems can be triggered manually or automatically.
Electrical starting systems normally operate at voltages of 24 V or below. Electrical starting systems above
24 V are not dealt with in this document and the installer of the engine shall ensure safe operation after
connecting the engine to the driven machinery.
For engines with compressed air starting, the starting pneumatic system shall conform with the installation
requirements and with the operation and safety information specified in the manuals provided by the starting
system components suppliers.
— — startingStarting handles shall have sufficient clearance from the mounting surface to ensure safe
turning;.
— — dieselDiesel engines with a manual starter shall have a decompression facility which shall not be
required to be hand-held during cranking.
The only permissible hand starting systems are crank handle (as defined above) and recoil starting devices in
accordance with ISO 14314:2004. The marking required in ISO 14314:2004, 7.3 shall not apply.
4.2.2 Verification
Conformance with the requirements shall be verified by inspection and testing of the starting systems.
4.3 Stopping
4.3.1 Requirements
4.3.1.1 Normal stopping
All generating sets shall have a normal switch or other normal stopping device which can be manually or
automatically actuated. Stopping controls shall remain in the stop position when operated. This shall operate
by a device ensuring the cutting off of the fuel or the ignition (for spark ignition engines) supply.
4.3.1.2 Stopping in case of failure
Generating sets except low power generating sets shall be provided with an automatically actuated stopping
device in case of failure.
This device shall monitor one or more signals of the generating set and if these signals are out of the allowable
range, it shall trigger the automatic stop.
The main signals used to actuate automatic stopping may include, but not be limited to, the following:
a) a) for the RIC engine
1) 1) overspeed;
2) 2) low lubricating oil pressure;
3) 3) high coolant temperature,; and
4) 4) low coolant level;
ISO/FDIS 8528-13:2025(en)
b) b) for the generator
1) 1) excessive overvoltage,; and
2) 2) overload.
These signals or other measures used to actuate automatic stopping shall be specified depending on the
application.
4.3.2 Verification
Normal stopping shall be verified by inspection and testing of the stopping device in manual and in automatic
modes (if provided in the application).
Automatic stopping in case of failure shall be verified by testing the action of typical failure modes in operating
conditions (an appropriate method shall be used to create typical failure conditions, e.g. manual triggering,
short-circuiting of contacts).
4.4 Emergency stopping
4.4.1 Requirements
Emergency stopping devices are required for remote controlled generating sets and generating sets with a
canopy or container accessible by persons. In accordance with the risk assessment in ISO 12100:2010, 6.3.5.2,
an emergency stopping device is not required for low power generating sets, as it shall not lessen the risk by
reducing the stopping time.
Emergency stopping devices shall be actuated manually. As for normal stopping, emergency stopping shall
operate by a device ensuring the cutting off of the fuel supply or ignition (for spark ignition engines). This
device should include an air supply cut-off.
Emergency stopping devices shall complyconform with IEC 60204-1:2016/A1:2021, Subclause 10.7.
Emergency stopping devices shall also meet the requirements of ISO 13850:2015, category 0, and the reset
shall not initiate a restart or any hazardous conditions.
Manually actuated emergency stopping devices shall be located inside and outside the canopy or container in
which a generating set is located and which is accessible for personnel to carry out maintenance or control
operations when generating sets are in operation.
For canopies, containers or where there is no physical access for personnel at least one emergency stopping
devices shall be located outside.
4.4.2 Verification
Emergency stopping devices shall be verified by inspection and testing in operating conditions.
4.5 Control devices
4.5.1 Design, safety and mechanical strength
4.5.1.1 Requirements
Control devices for the RIC engine of the generating set shall meet the following requirements:
— — hand controls shall be designed to withstand 1,2× the maximum actuating forces given in Table 1;0;
© ISO 2025 – All rights reserved
ISO/FDIS 8528-13:2025(en)
Table 1 — Clearance between controls
Operation by Spacing Maximum actuating force
(mm) (N)
Finger tip 10 10
Finger grasp
— toggles 20 50
— knobs 20 50
Hand
— upward 50 400
— fore-aft 50 300
— — for handles, knobs, grips, levers and similar devices, requirements and tests shall be in accordance
with Subclause 22.12 of IEC 60335-1:2020/A11:2023, 22.12;
— — controls shall act positively and smoothly and without delay or unexpected action and be in
accordance with ISO 2261:1994;
— — the surface temperature of the controls that shall be manually actuated while the engine is running
shall be within the following limits in accordance with ISO 13732-1:2006 for a contact time of 10 s:
— — 55 °C for metallic surfaces; and
— — 70 °C for non-metallic surfaces;
— — sharp edges or corners on, or close proximity to manual controls shall be removed. Edges shall have a
chamfer of at least 0,5 mm.
Table 1 — Clearance between controls
Operation by Spacing Maximum actuating force
(mm) (N)
Finger tip 10 10
Finger grasp
— toggles 20 50
— knobs 20 50
Hand
— upward 50 400
— fore-aft 50 300
4.5.1.2 Verification
Control devices of the RIC engine shall be verified by inspection and testing.
Control devices of the generating sets shall be verified in accordance with IEC 60204-1:2016/A1AMD1:2021,
10.1 and 10.2.
For surface temperature measurement of the control devices (RIC engines and generating sets), the following
method shall be conducted:
a) a) the generating set shall be operated at its rated power until the surface temperatures stabilize;
© ISO 2025 – All rights reserved
b) b) the test shall be conducted in a well-ventilated location not directly exposed to sunlight;
c) c) if the test is conducted at an ambient temperature outside of the nominal (20 ± 3) °C the
reported temperatures shall be corrected by the Formula (1):0:
( ) ( ) ( )
Tc °C = Tr °C − Ta °C 𝑇 = 𝑇 − 𝑇 + 20 (°C) (1)
c r a
where
Tc is the corrected temperature, in °C:
T is the reported temperature, in °C:
r
Ta is the ambient temperature, in °C.
4.5.2 Identification
4.5.2.1 Requirements
The control devices of the RIC engines shall be identified according to the function they perform, or their
function shall be explained in the operating manual. They shall be identified in accordance with IEC 61310-
2:2017. Colour coding shall be in accordance with IEC 60073:2002.
The marking on the engine controls shall be legible throughout the engine life.
Identification should preferably be by symbols in accordance with ISO 7000 DB:2019 or ISO 8999:2001 or, if
there are no suitable symbols, by words placed on the control or adjacent to it. Design, location and marking
principles shall be in accordance with IEC 61310-1:2007.
Emergency shut-off control handles or buttons shall be prominently located and shaped as well as being
coloured red, in order to be identified among the other controls.
The control devices on electrical equipment shall conform with the requirements of IEC 60204-
1:2016/A1:20162021, 10.1 and 10.2 with the exception as given in Table B.1.0.
4.5.2.2 Verification
Conformance with the requirements shall be verified by inspection.
4.5.3 Accessibility
4.5.3.1 Requirements
Controls should preferably be grouped.
Controls should be located within reach of the operator. Access shall be provided in accordance with
ISO 15534-2:2000. The spacing between controls shall be sufficient to allow operation without unintentional
actuation of adjacent controls. For the minimum clearances between controls recommended for the given
maximum actuating force, see Table 1.0.
4.5.3.2 Verification
Conformance with the requirements shall be verified by inspection and measurement.
ISO/FDIS 8528-13:2025(en)
4.6 Monitoring devices
4.6.1 Requirements
4.6.1.1 Instrument identification
Monitoring instruments shall be identified on or adjacent to them, preferably by a symbol in accordance with
ISO 8999:2001 or a descriptive wording for the system being monitored.
4.6.1.2 Instrument visibility
Monitoring instruments should be visible to the operator. They shall be illuminated for nighttime or indoor
operation so that they are legible from the operator’s position where the application requires it.
4.6.1.3 Instrument colour code
Monitoring instruments and monitoring systems should preferably be colour coded in accordance with
IEC 60073:2002. Red is recommended for malfunction or unsafe situation; green for a satisfactory situation
or to indicate a syste
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Questions, Comments and Discussion
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