ISO 3434:2012

INTERNATIONAL ISO
STANDARD 3434
Third edition
2012-09-01
Ships and marine technology — Heated
glass panes for ships’ rectangular windows
Navires et technologie maritime — Vitrages chauffants pour fenêtres
rectangulaires de navires
Reference number
©
ISO 2012
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Published in Switzerland
ii © ISO 2012 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Optical requirements . 1
3.1 Requirements . 1
3.2 Visibility . 2
3.3 Discoloration . 2
4 Construction of glass pane . 2
4.1 General . 2
4.2 Composition and materials . 2
4.3 Protection of edges . 4
4.4 Dimensions . 4
4.5 Parallelism . 6
4.6 Admissible distortion . 6
5 Heating circuit . 6
5.1 Heat output . 6
5.2 Electrical power supply . 7
5.3 Electrical connections . 7
5.4 Overheating protection . 7
6 Tests . 8
6.1 Electrical tests . 8
6.2 Mechanical tests . 8
6.3 Test certification . 8
7 Marking . 8
8 Designation . 9
Annex A (informative) Model for test certificate .10
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 3434 was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee
SC 8, Ship design.
This third edition cancels and replaces the second edition (ISO 3434:1992), which has been technically revised.
It also incorporates the Amendment ISO 3434:1992/Amd.1:2004.
iv © ISO 2012 – All rights reserved

INTERNATIONAL STANDARD ISO 3434:2012(E)
Ships and marine technology — Heated glass panes for ships’
rectangular windows
1 Scope
This International Standard specifies construction characteristics, optical qualities and heat current circuit, as
well as the tolerances, tests, marking and designation of heated glass panes for ships’ rectangular windows of
the heated series according to ISO 3903.
It includes the conditions to comply with the safety of ships in times of frost and/or snow, particularly during
manoeuvres in port.
Heated glass panes are used on ships principally for the windows of wheel-houses and bridges, as well as in
enclosed locations used for look-out and manoeuvring purposes. This International Standard specifies heated
glass panes which are intended for use at temperatures down to -40 °C.
2 Normative references
The following cited documents are indispensable for the application of this document. For dated references,
the edition cited applies only. For undated references, the latest edition of the referenced document (including
any amendments) applies.
ISO 554:1976, Standard atmospheres for conditioning and/or testing — Specifications
ISO 614, Shipbuilding and marine technology — Toughened safety glass panes for rectangular windows and
side scuttles — Punch method of non-destructive strength testing
ISO 3903, Ships and marine technology — Ships’ ordinary rectangular windows
ISO 5779:1987, Shipbuilding — Ordinary rectangular windows — Positioning
ISO 21005, Ships and marine technology — Thermally toughened safety-glass panes for windows and side scuttles
IEC 60092-101, Electrical installations in ships — Part 101: Definitions and general requirements
,
IEC 60529:2001 Degrees of protection provided by enclosures (IP Code)
3 Optical requirements
3.1 Requirements
When heated glass panes are installed in windows, they shall comply with the requirements in 3.2 and 3.3.
All the optical requirements shall apply independent of the kind of temperature control (for example, a thermostat).
However, these optical qualities are not required at the periphery of the glass pane within a distance of 50 mm
width, see Figure 1.
Dimensions in millimetres
Key
1 edge cover, variable width
2 edge zone
3 main clear vision area
4 pane size (w/h)
Figure 1 — Main clear vision area
3.2 Visibility
Heated glass panes shall ensure perfect visibility in all weather, avoiding the formation of mist or frost, in
relation to the heat output, see Table 3. In addition, they shall ensure maximum efficiency of the windscreen
wipers when operating in conditions of frost and/or snow. They shall not cause any significant reduction in the
ability of a person to see with the naked eye or binoculars when a distant object is observed at normal line of
vision through the glass. National and international regulations must be considered.
Tinted glass shall not be used.
3.3 Discoloration
Heated glass panes shall not cause any deterioration in perception of colour, or perceivable discoloration of
objects, in particular colours of signal lights and lights on buoys.
4 Construction of glass pane
4.1 General
A complete mountable heated glass pane that meets the requirements of this International Standard is an
assembly consisting of laminated glass panes and a durable mounted device f
...