Amendment 1 - Household electric cooking appliances - Part 1: Ranges, ovens, steam ovens and grills - Methods for measuring performance

Amendement 1 - Appareils de cuisson électrodomestiques - Partie 1: Cuisinières, fours, fours à vapeur et grils - Méthodes de mesure de l'aptitude à la fonction

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Status
Published
Publication Date
16-May-2021
Current Stage
PPUB - Publication issued
Completion Date
17-May-2021
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IEC 60350-1:2016/AMD1:2021 - Amendment 1 - Household electric cooking appliances - Part 1: Ranges, ovens, steam ovens and grills - Methods for measuring performance
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IEC 60350-1
Edition 2.0 2021-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Household electric cooking appliances –
Part 1: Ranges, ovens, steam ovens and grills – Methods for measuring
performance
Appareils de cuisson electrodomestiques –
Partie 1: Cuisinières, fours, fours à vapeur et grils – Méthodes de mesure de
l'aptitude à la fonction
IEC 60350-1:2016-04/AMD1:2021-05(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60350-1
Edition 2.0 2021-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Household electric cooking appliances –
Part 1: Ranges, ovens, steam ovens and grills – Methods for measuring
performance
Appareils de cuisson electrodomestiques –
Partie 1: Cuisinières, fours, fours à vapeur et grils – Méthodes de mesure de
l'aptitude à la fonction
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.040.20 ISBN 978-2-8322-9786-5

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60350-1:2016/AMD1:2021
© IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD ELECTRIC COOKING APPLIANCES –
Part 1: Ranges, ovens, steam ovens and grills –
Methods for measuring performance
AMENDMENT 1
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their

preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

may participate in this preparatory work. International, governmental and non-governmental organizations liaising

with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence between

any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

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

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

Amendment 1 to IEC 60350-1:2016 has been prepared by subcommittee 59K: Performance of

household and similar electrical cooking appliances, of IEC technical committee 59:

Performance of household and similar electrical appliances.
The text of this Amendment is based on the following documents:
FDIS Report on voting
59K/328/FDIS 59K/331/RVD

Full information on the voting for its approval can be found in the report on voting indicated in

the above table.
The language used for the development of this Amendment is English.
---------------------- Page: 4 ----------------------
IEC 60350-1:2016/AMD1:2021 – 3 –
© IEC 2021

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

described in greater detail at www.iec.ch/standardsdev/publications/.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under webstore.iec.ch in the data related to the

specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 5 ----------------------
– 4 – IEC 60350-1:2016/AMD1:2021
© IEC 2021
1 Scope
Add the following note after the first paragraph:

NOTE 3 This document is also applicable to portable appliances with similar functionalities that were previously

covered by the withdrawn IEC 61817.
In Note 2, delete the 2 bullet regarding the exclusion of portable appliances.
Replace 6.5 by the following new content:
6.5 Dimensions of a grill grid
6.5.1 Entire area

The entire area of the grill grid is determined by measuring the maximum width and the

maximum depth of the outer rods. This entire area of the grill grid is calculated and stated in

square centimetres, rounded to 10 cm .
6.5.2 Usable area

The usable width and usable depth of the grill grid are measured, by considering only the inner

grid, which is suitable for placing food. The usable area of the grill grid is calculated and stated

in square centimetres, rounded to 10 cm .
Key:
a is the maximum width of the grill grid
b is the maximum depth of the grill grid
c is the usable width of the grill grid
d is the usable depth of the grill grid

Figure 13 – Examples for determining the entire area and usable area of a grill grid

Table 2 – Ingredients
In the row dealing with eggs, replace "Clause C.1" with "Clause C.2".
---------------------- Page: 6 ----------------------
IEC 60350-1:2016/AMD1:2021 – 5 –
© IEC 2021
Replace Clause 9 with the following new content:
9 Effective grilling area
9.1 Purpose

The purpose of this test is to determine the effective grilling area (E). The effective grilling area

is the part of the usable area of the grill grid (see 6.5) where white bread reaches a required

browning intensity during grilling.
9.2 Ingredients

The measurement is done with factory-made white bread made of wheat (e.g. Golden Toast ),

which is commonly available and suitable for toasting. The slices of bread shall have an edge

length of at least 80 mm and a thickness of 12 mm ± 1 mm. It shall be fine-pored.

If more than one loaf of bread is necessary, it shall be from the same batch. Therefore, the

bread shall be bought from the same supplier, at the same time and stored under same

conditions until needed for the measurements. It shall be used before the expiry date.

9.3 Preparation

Discard the first two and the last two slices of one package because these slices often have a

different texture. Remove the crust and cut the slices of bread to an edge length of 70 mm ±

1 mm.

Determine the usable area of the grill grid (A ) and state it in cm . Cover the usable area of the

grill grid completely (without gaps in between) with bread. For this, it can be necessary to trim

some slices. The minimum width and length of each slice shall not be less than 35 mm.

9.4 Procedure

Follow the operating instructions with respect to the heating function, temperature, shelf and

preheating. If preheating is recommended, the grill grid is placed in the oven when the end of

the preheating phase is indicated, for example by visual or acoustic signal, or after a

recommended pre-heating time.

If no instructions are given, the grill grid is placed in the highest possible level in the not-

preheated oven until it reaches the stop position of the rack, the door is closed, and the bread

is grilled with the highest possible setting.

During the grilling process, the door may be opened once for a maximum of 3 s to check the

browning, but without moving the grid.

Remove the grill grid when the bread is browned and burnt spots start to appear (≥ shade

number 15).
_____________

Golden Toast is the trade name of a product supplied by Lieken Brot und Backwaren GmbH. Golden Toast might

be commercially available through other suppliers after the date of publication of this standard. This information

is given for the convenience of the users of this document and does not constitute an endorsement by IEC of the

product named. Equivalent products may be used if they can be shown to lead to the same results.

---------------------- Page: 7 ----------------------
– 6 – IEC 60350-1:2016/AMD1:2021
© IEC 2021
9.5 Assessment
9.5.1 General

Assess the browning of the bread within 1 h. Through the grilling process, the slices of bread

might bulge, which could increase the browning of the edges. Therefore, the top area of a slice

of toast is reduced alongside its outline as shown in Figure 14 by 2 mm to 3 mm from each side.

The assessable area (A ) is the top area after grilling considering the shrinkage of toast and

cutting the slices; see Figure 14.
Key:
a is the rejected part of each edge length; 2 mm ≤ a ≤ 3 mm
Figure 14 – Determining the assessable area of a slice of toast – Example
9.5.2 Criteria of validity

For a valid result, sufficient browning is required. This is ensured if the percentage of burned

parts of the assessable area in total is ≥ 3 % to ≤ 15 %. Burned areas (A ) are defined by

≥15

showing a shade number ≥ 15 in accordance with Annex B. To determine the shade numbers,

a digital evaluation system in accordance with 7.5.3.6.3 should be used.
If the result is invalid, repeat the test with adapted time.
9.5.3 Criteria of assessment
The relative effective grilling area E is calculated with the following formula:
8-14
E ×100
(17)
A − A
a ≥15
where
E is the relative effective grilling area, in %;

A is the assessable properly browned area with a shade number within the range of ≥ 8

8-14
and ≤ 14, in cm ;
A is the assessable burnt area with a shade number ≥ 15, in cm ;
≥15
A is the assessable area, in cm .
---------------------- Page: 8 ----------------------
IEC 60350-1:2016/AMD1:2021 – 7 –
© IEC 2021
The absolute effective grilling area E in cm is calculated as follows:
8-14
E × A
(18)
Additionally, the following areas shall be noted:
– the not browned area N in cm :
NA ×
(19)
– the burnt area B in cm :
≥15
B × A
(20)
where

A is the assessable properly browned area with a shade number within the range of ≥ 8

8-14
and ≤ 14, in cm ;
A is the assessable burnt area with a shade number ≥ 15, in cm ;
≥15
A is the assessable not browned area with a shade number <8;
A is the assessable area, in cm ;
A is the usable area of the grill grid, in cm .

The final effective grilling area is calculated as an average of three valid tests.

Additionally, if the upper surface of the bread that is assessed is above or below half the usable

height measured in accordance with 6.2.2, this shall be reported.
---------------------- Page: 9 ----------------------
– 8 – IEC 60350-1:2016/AMD1:2021
© IEC 2021
Annex A
(normative)
Colour measuring instrument
Replace the existing content of Annex A with the following new content:

The instrument (see Figure A.1) is in accordance with CIE 15 with the following specification:

– measuring geometry: diffuse, 8° vertical deviation;
– measuring aperture: diameter 8 mm to 16 mm;

– calibration standard: white, pressed barium sulfate (BaSO ), polytetrafluoroethylene (PTFE)

or equivalent;
– wavelength range: 400 nm ≤ λ ≤ 700 nm;
– wavelength interval: ≤ 10 nm;
– standard illuminant: CIE standard illuminant D65;
– standard observer: 10°;
– evaluation: CIEXYZ (CIE 1931) / CIELAB (CIE).
Key:
1 detector 4 integrating sphere
2 illumination source 5 specimen under measuring aperture
3 shutter
Figure A.1 – Colour measuring instrument
---------------------- Page: 10 ----------------------
IEC 60350-1:2016/AMD1:2021 – 9 –
© IEC 2021
Annex C
(informative)
Addresses of suppliers
Replace Clause C.1 with the following new content:
C.1 General

The information given in Annex C is for the convenience of users of this document and does

not constitute an endorsement by the IEC of the products named. Equivalent products may be

used if they can be shown to lead to the same results.
Replace Clause C.3 with the following new content:
C.3 Food mixer

This clause describes an appropriate food mixer for the dough for the small cakes used in 7.5.3.

Mixing times and levels are determined for the Bosch MUM4 series, e.g. Bosch MUM4405 .

Specification of an appropriate food mixer:
– power rating (550 ± 50) W;
– revolutions per minute, see Table C.
...

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