Protective clothing for use in Snowboarding - Wrist Protectors - Requirements and test methods (ISO 20320:2020)

This European Standard specifies the requirements and test methods for ergonomics,
innocuousness, comfort/sizing, restraint, strength, abrasion, impact performance, (bending)stiffness as well as
provisions for marking and instructions supplied by the manufacturer for wrist protectors (hereinafter referred
to as protectors) for all users of snowboard equipment.
lt does not apply to protectors used in roller sports as well as roller sports hockey or alpine skiing.
NOTE 1 The requirements of a clause take precedent over figures.
NOTE 2 The intent of this standard is to specify performance requirements of wrist protectors needed to
reduce the risk of direct injury to the wrist caused by contact of the ground within the protective zone of the
wrist protectors.

Schutzkleidung zum Gebrauch beim Snowboard-Fahren - Handgelenkschützer - Anforderungen und Prüfverfahren (ISO 20320:2020)

Dieses Dokument legt die Anforderungen an und Prüfverfahren für Handgelenkschützer in Bezug auf Ergonomie, Unschädlichkeit, Bequemlichkeit/Größe, Befestigung, Fähigkeit zur Begrenzung der Handgelenksextension und zur Verminderung der Stoßkraft an der Handinnenfläche sowie die Vorschriften zu Kennzeichnung und Anweisungen, die durch den Hersteller zur Verfügung gestellt werden, für alle Nutzer von Snowboard-Ausrüstung fest.
Es gilt nicht für Schützer, die in Rollsportarten, im alpinen Skisport oder anderen Sportarten verwendet werden. Dieses Dokument behandelt nicht den Schutz für den Unterarm gegen Axialkräfte, die durch eine Stoßeinwirkung auf die Finger oder die Faust verursacht werden. Darüber hinaus behandelt dieses Dokument nicht den Schutz gegen Palmarflexion (terminale Flexion), die durch eine Stoßeinwirkung auf die dorsale Seite der Hand verursacht wird.

Habillement de protection destinés à la pratique du surf des neiges - Protecteurs de poignets - Exigences et méthodes d’essai (ISO 20320:2020)

Le présent document spécifie les exigences et les méthodes d'essai concernant l'ergonomie, l'innocuité, le confort et la taille, la retenue et la capacité à limiter l'extension du poignet et à atténuer la force d'impact sur la paume, ainsi que les dispositions relatives au marquage et aux instructions fournies par le fabricant applicables aux protecteurs de poignets destinés à tous les utilisateurs d'équipement de surf des neiges.
Il ne s'applique pas aux dispositifs de protection utilisés dans les sports à roulettes, le ski alpin ou tout autre sport. Le présent document ne traite pas de la protection de l'avant-bras en raison de l'effort axial dû à un choc sur les doigts ou le poing. Le présent document ne traite pas non plus de la protection contre la flexion palmaire (flexion terminale) causée par un choc sur la face dorsale de la main.

Varovalna obleka za uporabo pri deskanju na snegu - Ščitniki zapestja - Zahteve in preskusne metode (ISO 20320:2020)

General Information

Status
Published
Public Enquiry End Date
04-Nov-2018
Publication Date
21-May-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
16-Apr-2020
Due Date
21-Jun-2020
Completion Date
22-May-2020

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SLOVENSKI STANDARD
SIST EN ISO 20320:2020
01-junij-2020

Varovalna obleka za uporabo pri deskanju na snegu - Ščitniki zapestja - Zahteve in

preskusne metode (ISO 20320:2020)

Protective clothing for use in Snowboarding - Wrist Protectors - Requirements and test

methods (ISO 20320:2020)
Schutzkleidung zum Gebrauch beim Snowboard-Fahren - Handgelenkschützer -
Anforderungen und Prüfverfahren (ISO 20320:2020)

Habillement de protection destinés à la pratique du surf des neiges - Protecteurs de

poignets - Exigences et méthodes d’essai (ISO 20320:2020)
Ta slovenski standard je istoveten z: EN ISO 20320:2020
ICS:
13.340.40 Varovanje dlani in rok Hand and arm protection
97.220.20 Oprema za zimske športe Winter sports equipment
SIST EN ISO 20320:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 20320:2020
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SIST EN ISO 20320:2020
EN ISO 20320
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2020
EUROPÄISCHE NORM
ICS 13.340.40; 97.220.20
English Version
Protective clothing for use in Snowboarding - Wrist
Protectors - Requirements and test methods (ISO
20320:2020)

Habillement de protection destinés à la pratique du Schutzkleidung zum Gebrauch beim Snowboard-

surf des neiges - Protecteurs de poignets - Exigences et Fahren - Handgelenkschützer - Anforderungen und

méthodes d'essai (ISO 20320:2020) Prüfverfahren (ISO 20320:2020)
This European Standard was approved by CEN on 25 January 2020.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20320:2020 E

worldwide for CEN national Members.
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SIST EN ISO 20320:2020
EN ISO 20320:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 20320:2020
EN ISO 20320:2020 (E)
European foreword

This document (EN ISO 20320:2020) has been prepared by Technical Committee ISO/TC 94 "Personal

safety -- Personal protective equipment" in collaboration with Technical Committee CEN/TC 162

“Protective clothing including hand and arm protection and lifejackets” the secretariat of which is held

by DIN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by October 2020, and conflicting national standards shall

be withdrawn at the latest by October 2020.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, and supports essential requirements of EU Directive(s).

For the relationship with EU Directive see informative Annex ZA, which is an integral part of this

document.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 20320:2020 has been approved by CEN as EN ISO 20320:2020 without any modification.

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SIST EN ISO 20320:2020
EN ISO 20320:2020 (E)
Annex ZA
(informative)
Relationship between this European Standard and the essential
requirements of Regulation (EU) 2016/425 of the European Parliament and
of the Council of 9 March 2016 on personal protective equipment aimed to
be covered

This European Standard has been prepared under a mandate given to CEN by the European

Commission and the European Free Trade Association to provide a means of conforming to Essential

Requirements of Regulation (EU) 2016/425.

Once this standard is cited in the Official Journal of the European Union under that Regulation (EU)

2016/425, compliance with the normative Clauses of this standard given in Table ZA.1 confers, within

the limits of the scope of this standard, a presumption of conformity with the corresponding essential

requirements of that Regulation (EU) 2016/425 and associated EFTA regulations.

Table ZA1 — Correspondence between this European Standard and Regulation (EU) 2016/425

Essential Requirements of Clause(s)/subclauses(s) Remarks/Notes
Regulation (EU) 2016/425 of this standard
1.1.1 Ergonomic 4.3
1.1.2.1 Optimum level of protection 4.3
1.2.1 Absence of inherent risks and 4.2
other nuisance factors
1.2.1.1 Suitable constituent material 4.4
1.2.1.2 Satisfactory surface condition 4.4
of all PPE parts in contact with the
user
1.3.1 Adaptation of PPE to users 4.5
morphology
1.3.2 Lightness and strength 4.6
1.4 Information supplied by the 6, 7
manufacturer
2.4 PPE subject to ageing 6, 7
2.12 PPE bearing one or more 6
identification or recognition marks
directly or indirectly relating to
health
and safety
3.1.1 Impact caused by falling or 4.7/4.8
projecting objects and collision of
parts of the body with an obstacle

WARNING 1 — Presumption of conformity stays valid only as long as a reference to this

European Standard is maintained in the list published in the Official Journal of the European

Union. Users of this standard should consult frequently the latest list published in the Official

Journal of the European Union.
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SIST EN ISO 20320:2020
EN ISO 20320:2020 (E)

WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the

scope of this standard.
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SIST EN ISO 20320:2020
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SIST EN ISO 20320:2020
INTERNATIONAL ISO
STANDARD 20320
First edition
2020-03
Protective clothing for use in
snowboarding — Wrist protectors —
Requirements and test methods
Habillement de protection destiné à la pratique du surf des neiges —
Protecteurs de poignets — Exigences et méthodes d’essai
Reference number
ISO 20320:2020(E)
ISO 2020
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SIST EN ISO 20320:2020
ISO 20320:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

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, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
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SIST EN ISO 20320:2020
ISO 20320:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Requirements .......................................................................................................................................................................................................... 2

4.1 General ........................................................................................................................................................................................................... 2

4.2 Splints ............................................................................................................................................................................................................. 3

4.3 Ergonomics ................................................................................................................................................................................................ 3

4.4 Innocuousness ......................................................................................................................................................................................... 3

4.5 Restraint ....................................................................................................................................................................................................... 3

4.6 Impact strength ...................................................................................................................................................................................... 3

4.7 Impact performance ........................................................................................................................................................................... 3

4.8 Limitation of wrist extension ..................................................................................................................................................... 4

5 Testing ............................................................................................................................................................................................................................. 4

5.1 General ........................................................................................................................................................................................................... 4

5.2 Sampling ....................................................................................................................................................................................................... 5

5.3 Conditioning .............................................................................................................................................................................................. 5

5.3.1 General...................................................................................................................................................................................... 5

5.3.2 Room temperature conditioning ........................................................................................................................ 5

5.3.3 Cold temperature conditioning ........................................................................................................................... 5

5.4 Ergonomics ................................................................................................................................................................................................ 6

5.5 Restraint ....................................................................................................................................................................................................... 6

5.6 Impact strength ...................................................................................................................................................................................... 7

5.6.1 Apparatus ............................................................................................................................................................................... 7

5.6.2 Procedure ............................................................................................................................................................................... 7

5.7 Impact performance ........................................................................................................................................................................... 8

5.7.1 Test area .................................................................................................................................................................................. 8

5.7.2 Apparatus ............................................................................................................................................................................... 8

5.7.3 Procedure ............................................................................................................................................................................... 9

5.8 Limitation of wrist extension ..................................................................................................................................................... 9

5.8.1 Principle .................................................................................................................................................................................. 9

5.8.2 Apparatus ............................................................................................................................................................................... 9

5.8.3 Procedure ............................................................................................................................................................................12

6 Marking .......................................................................................................................................................................................................................12

7 Information supplied by the manufacturer ..........................................................................................................................12

8 Test report ................................................................................................................................................................................................................13

Bibliography .............................................................................................................................................................................................................................14

© ISO 2020 – All rights reserved iii
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SIST EN ISO 20320:2020
ISO 20320:2020(E)
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).

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

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 94, Personal safety — Protective clothing

and equipment, Subcommittee SC 13, Protective clothing, in collaboration with the European Committee

for Standardization (CEN) Technical Committee CEN/TC 162, Protective clothing including hand and arm

protection and lifejackets, in accordance with the Agreement on technical cooperation between ISO and

CEN (Vienna Agreement).

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.
iv © ISO 2020 – All rights reserved
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SIST EN ISO 20320:2020
ISO 20320:2020(E)
Introduction

Snowboarding are all the pastimes and competitions in which a snowboard is used. The users range

from small children to adults of all ages.

The wrist is the most frequently injured body region among snowboarders. The majority of wrist

injuries are consequences of falls. The most common injury mechanism is described as a compressive

load applied to a hyperextended wrist. Beginners and children have a high incidence of wrist injuries

due to snowboarding. One third of injuries among beginner snowboarders are to the wrist.

Studies have shown that the risk of sustaining a wrist injury can be reduced by wearing wrist

protection. Wrist protectors in snowboarding are intended to protect the wearer against fractures as

well as contusions and sprains.

Wrist protectors will not prevent all wrist, forearm, hand, elbow and shoulder injuries in snowboard

accidents.

A wide variety of wrist protectors is commercially available. Consumers can choose between different

principal design concepts. One is the “integrated protection concept” in which the protective elements

are integrated within a glove. Another one is the “separated protection concept” where the protective

elements are individual components (similar to a brace or orthosis) that can be worn with or without a

[3][4][5][6]

glove. If worn with a glove it can be foreseen to place them underneath or on top of the glove .

© ISO 2020 – All rights reserved v
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SIST EN ISO 20320:2020
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SIST EN ISO 20320:2020
INTERNATIONAL STANDARD ISO 20320:2020(E)
Protective clothing for use in snowboarding — Wrist
protectors — Requirements and test methods
1 Scope

This document specifies the requirements and test methods for ergonomics, innocuousness, comfort/

sizing, restraint, ability to limit wrist extension and attenuate impact force on the palm as well as

provisions for marking and instructions supplied by the manufacturer for wrist protectors for all users

of snowboard equipment.

It does not apply to protectors used in roller sports, alpine skiing, or other sports. This document does

not address protection for the forearm due to axial forces caused by an impact on the fingers or fist.

Moreover, this document does not address protection against palmar flexion (terminal flexion) caused

by an impact on the dorsal side of the hand.
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 21420:2020, Protective gloves — General requirements and test methods

ISO 13999-1:1999, Protective clothing — Gloves and arm guards protecting against cuts and stabs by hand

knives — Part 1: Chain mail gloves and arm guards
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
wrist
radio-carpal joint
3.2
dorsal
pertaining to upper side or back of the hand and wrist
3.3
palmar
pertaining to the palm side of the hand and wrist
3.4
wrist protector
wrist guard

device worn on the wrist and extending onto the forearm and the hand, that is intended to reduce the

risk of wrist injuries by mechanical impact
© ISO 2020 – All rights reserved 1
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SIST EN ISO 20320:2020
ISO 20320:2020(E)
3.5
concepts of wrist protectors
3.5.1
integrated protection concept
glove and protection elements forming one unit and used as one product
3.5.2
standalone protection concept

protection elements forming a wrist protector which can be worn with a glove, where the suitable type

of glove will be specified by the manufacturer

Note 1 to entry: The manufacturer specifies how the protector is to be worn, including, whether the protector is

to be worn underneath or on top of the glove.
3.7
stiffness element
design element that limits wrist extension
3.8
splint

type of stiffness element that uses semi-rigid support on either the dorsal and/or palmar area of the

protector
3.9
fastener
strap or connector attaching wrist protector to the wrist
3.10
extension
movement of the hand in the dorsal direction
Note 1 to entry: Dorsal pertains to the back of the hand, palmar to the palm.
3.11
flexion
movement of the hand in the palmar direction
4 Requirements
4.1 General

Performance requirements shall be based on 3 ranges (A, B, C) as defined in Table 1.

The size of the wrist protector shall be defined according to the hand size in ISO 21420.

Table 1 — Correlation range to size
Range
A B C
Size ≤6 7 to 8 ≥9

Requirements are fulfilled, if ergonomic-, innocuousness - and restraint- tests are fulfilled at

room temperature (20 °C) and impact- and limitation of wrist extension-tests are fulfilled at room

temperature and in cold condition (−10 °C)

However, additional impact- and limitation of wrist extension-tests at lower temperature might be

performed and specified in the information supplied by the manufacturer (see Clause 7).

2 © ISO 2020 – All rights reserved
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SIST EN ISO 20320:2020
ISO 20320:2020(E)
4.2 Splints

Wrist protectors may have splints on either the dorsal and/or palmar area of the protector. If splints are

used, their dimensions must be appropriate to ensure sufficient pressure distribution on the surface of

the hand and forearm. The dimension shall conform to the measures as given in Table 2. The reference

point for measurements shall be the plane of the wrist of an appropriate size of assessor (see Table 1),

who has put on the protector in straight position. The position of the plane of the wrist of the assessor

shall be determined according to ISO 13999-1:1999, Figure 1.
Table 2 — Minimum dimensions of splints in wrist protectors
Dimensions in millimetres
Range
Location of splints
A B C
Length from the wrist up the arm towards the elbow 45 ± 2 50 ± 2 55 ± 2
Length from the wrist up the hand towards the
40 ± 2 45 ± 2 50 ± 2
finger tip
Width at each end of the splints 25 ± 2 25 ± 2 30 ± 2
NOTE Differences between A, B and C are based on Reference [9].
4.3 Ergonomics

When tested in accordance with 5.4, the assessor shall be able put on and take off the two wrist

protectors by themselves without any discomfort, significant problem or hazard being encountered.

When tested in accordance with 5.4, the accessor shall be able to close and open the binding system by

themselves while wearing wrist protectors.
4.4 Innocuousness
The product shall comply with the requirements in ISO 21420:2020, 4.2.

The tested sample shall not show permanently deformed nor broken parts, when tested according to

5.7 and 5.8.

Straps and closures of the tested samples shall not open during the tests according to 5.6 and 5.8.

The handling of the wrist protector during tests according to 5.4 and 5.5 shall not show roughness,

sharp edges, projections and the like which could cause excessive irritation or injuries.

If splints are used for limitation of the wrist extension, their dimensions must fulfil the requirements of

4.2.
4.5 Restraint

When tested in accordance with 5.5, the displacement Δl (see Figure 2: l − l ) of each test shall not

2 1
exceed 20 mm.
4.6 Impact strength

When tested in accordance with 5.6 all components of the wrist protector shall not break or split.

4.7 Impact performance

Wrist protectors can have protection elements that protect the palm against impact.

When tested in accordance with 5.7 all measured impact forces shall not exceed 3 kN.

© ISO 2020 – All rights reserved 3
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SIST EN ISO 20320:2020
ISO 20320:2020(E)
4.8 Limitation of wrist extension

Wrist protectors shall be sufficiently stiff that when tested according to 5.8 and loaded with torque 1

according to Table 8 all resulting angles of the artificial wrist joint (extension 1) shall be within 50° to

75° (extension 1 = 50° … 75° ± 1°). When tested according to 5.8 and loaded with torque 2 according

to Table 8, all resulting angles of the artificial wrist joint (extension 2) shall be within 55° to 80°

(extension 2 = 55° … 80° ± 1°).

When torque 2 according to Table 8 is applied, extension 2 shall be at least 5° greater than extension 1

at torque 1 (extension 2 – extension 1 ≥ 5° ± 1°).
Key
1 extension 1 3 force
2 extension 2 4 torque 1/2
Figure 1 — Extension angle
5 Testing
5.1 General

If no specific methods are specified, compliance with the requirements of this document shall be

examined by measurement, visual inspection and tactile examination.
Only wrist protectors, as offered for sale shall be tested.

One size is tested per range (see Table 1) and the results are valid for all sizes within the range.

Manufacturers do not need to supply a size for each range but test results are not transferable

between ranges.
4 © ISO 2020 – All rights reserved
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SIST EN ISO 20320:2020
ISO 20320:2020(E)

According to the two main types of design concept, the testing samples for all performance tests are as

follows:

— If the wrist protector is built as an integrated protection concept, the complete product (protector

and glove) has to be tested.

— If the wrist protector is built as a standalone protection concept, the product is to be tested in the

configuration as specified in the information supplied by the manufacturer. If one or more types of

gloves are foreseen, the protector shall be tested in combination with all type of gloves specified in

the information supplied by the manufacturer. The protector shall be mounted as specified in the

information supplied by the manufacturer (e.g. underneath or on top of the glove).

The sequence of tests shall be as shown in Table 3.

Table 3 — Sequence of tests and number of test sample (to be done for each range)

Sequence of
Performance Test Sample number/Conditioning
tests
Ergonomics 1st No. 1 (L+R) -
Restraint 2nd —
...

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