EN 60705:2012

SLOVENSKI STANDARD
01-julij-2012
*RVSRGLQMVNHPLNURYDORYQHSHþLFH0HWRGH]DPHUMHQMHODVWQRVWL
Household microwave ovens - Methods for measuring performance
Mikrowellengeräte für den Hausgebrauch und ähnliche Zwecke - Verfahren zur Messung
der Gebrauchstauglichkeit
Fours à micro-ondes à usage domestique - Méthodes de mesure de l'aptitude à la
fonction
Ta slovenski standard je istoveten z: EN 60705:2012
ICS:
97.040.20 âWHGLOQLNLGHORYQLSXOWL Cooking ranges, working
SHþLFHLQSRGREQLDSDUDWL tables, ovens and similar
appliances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60705
NORME EUROPÉENNE
May 2012
EUROPÄISCHE NORM
ICS 97.040.20 Supersedes EN 60705:1999 + A1:2004 + A2:2006

English version
Household microwave ovens -
Methods for measuring performance
(IEC 60705:2010, modified)
Fours à micro-ondes à usage domestique Mikrowellengeräte für den Hausgebrauch
- und ähnliche Zwecke -
Méthodes de mesure de l'aptitude à la Verfahren zur Messung der
fonction Gebrauchstauglichkeit
(CEI 60705:2010, modifiée) (IEC 60705:2010, modifiziert)

This European Standard was approved by CENELEC on 2012-03-12. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified
to the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60705:2012 E
Foreword
This document (EN 60705:2012) consists of the text of IEC 60705:2010 prepared by IEC/SC 59K
"Ovens and microwave ovens, cooking ranges and similar appliances", together with the common
modifications prepared by CLC/TC 59X "Performance of household and similar electrical appliances".
The following dates are fixed:
(dop) 2013-03-12
• latest date by which this document has to be
implemented
at national level by publication of an identical
national standard or by endorsement
(dow) 2015-03-12
• latest date by which the national standards conflicting
with this document have to be withdrawn

This document supersedes EN 60705:1999 + A1:2004 + A2:2006.
— the usable volume is renamed to calculated volume and the measurement method for the
calculated volume is revised (see 7.2)
— new definitions for microwave function, combination microwave function, set to off mode, set to
standby mode, cooling down period and food support in Clause 3;
— a method for measuring the energy consumption of the microwave function in Clause 9;
— more precise requirements for instruments and measurements in Table Z.1;
— measurement uncertainties of results in Clause Z.1;
— additional product specific requirements for measuring the energy consumption of low power
modes in Clause Z.2;
— a method for measuring the energy consumption for the cooling down period in Annex ZD
(informativ).
In this standard, the following print types are used:
– test specifications: in italic type
– notes: in small roman type
– other texts: in roman type.
Words in bold in the text are defined in Clause 3.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Clauses, subclauses, notes, tables, figures and annexes which are additional to those in
IEC 60705:2010 are prefixed “Z”.

- 3 - EN 60705:2012
Endorsement notice
The text of the International Standard IEC 60705:2010 was approved by CENELEC as a European
Standard with agreed common modifications.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
[3] IEC 60350:1999 NOTE  Harmonized as EN 60350:1999 (modified).
[4] CISPR 11:2009 NOTE  Harmonized as EN 55011:2009 (modified).

COMMON MODIFICATIONS
1 Scope
Add the following sentence to Note 1:
– microwave ovens which cannot accept a load having a diameter of ≥ 200 mm or a height of ≥ 120 mm.
2 Normative references
Add the following references:
EN 60584-2:1993, Thermocouples  Part 2: Tolerances (IEC 60584-2:1982 + A1:1989)
EN 50564:2011, Electrical and electronic household and office equipment  Measurement of
low power consumption
1)
EN 60350-1: 20xx , Household electric cooking appliances  Part 1: Ranges, ovens, steam
ovens and grills - Methods for measuring performance (IEC 60350-1:2011, modified)
3 Definitions
In 3.1, delete Note 1 and renumber Note 2 in Note 1.
Add the following note to 3.2:
Note 1 to entry: Energy transfer by steam is included.

Add the following new definitions to Clause 3:
3.Z1 microwave function
heat transfer exclusively by electromagnetic energy in the ISM frequency band of 2 450 MHz

3.Z2 combination microwave function
heat transfer by electromagnetic energy simultaneously or sequentially with thermal heat
Note 1 to entry: Thermal heat can be a conventional heating function, a forced air circulation function, a hot steam
function or steam function. Definitions are given in EN 60350-1.

3.Z3 Set to off mode
action where the product is switched off using appliance controls or switches that are
accessible and intended for operation by the user during normal use to attain the lowest
power consumption that may persist for an indefinite time while connected to a main power
source and used in accordance with the manufacturer’s instructions. All actions required to
set to off mode like for example empty the water tank, remove food, close the door etc have
to be taken
Note 1 to entry: For definition of off mode EN 50564 is relevant.

3.Z4 Set to standby mode
action where the product is switched to standby using appliance controls or switches that are
accessible and intended for operation by the user during normal use to attain the lowest
power consumption that may persist for an indefinite time while connected to a main power
source and used in accordance with the manufacturer’s instructions
Note 1 to entry: For definition of standby mode EN 50564 is relevant.

1)
At draft stage.
- 5 - EN 60705:2012
3.Z5 cooling down period
unstable condition persisting after completion of the active mode and the appliance is set to
off mode where the power consumption may change without any intervention by the user

3.Z6 food support
horizontal support in the cavity on which the load is placed. If the appliance is fitted with a
turntable, the turntable is the food support. The food support can also be a shelf or a
reciprocating tray. If recommended by manufacturer’s instruction also the cavity bottom can
be the food support
4.1 According to type
Add the following paragraph and NOTE after the second dash:
The manufacturers shall define the primary cooking function of the appliance, microwave
function or thermal heat. The primary cooking function has to be measured with an existing
method according to energy consumption.
If the primary cooking function is declared as a microwave function the EN 60705 shall be
applied for energy consumption measurement. If the primary cooking function is declared as a
thermal heat the EN 60350-1 is applied for energy consumption measurement.

NOTE Z1 There is no measurement method for the energy consumption for grilling and steam functions.

4.2 According to characteristics
After the first dash item, add the following new dash item:
– dimensions of shelves;
Replace the second dash item by:
– moved food support, e.g. reciprocating tray, turntable;
After the last dash item, add the following new dash item:
–  possible thermal heating modes (grilling, hot air, steam function etc.).
5 List of measurements
Revise Clause 5, Table 1:
• Line 6: Cancel efficiency, add instead energy consumption.
• Line 5: Add efficiency to microwave power output

Table 1  List of measurements
Item of measurement Clause or Reproducibility Microwave ovens Combination
1)
subclause microwave ovens
External dimensions 7.1 Yes * *
Usable cavity dimensions 7.2 Yes * *
Calculated cavity volume 7.3 Yes * *
Microwave power output and 8 Yes *
efficiency
Energy consumption for the 9 Yes *
microwave function
Square tank 10.1 Yes *
Multiple cup 10.2 Yes *
Heating beverages 11.1 Yes *
Heating simulated food 11.2 Yes *
Egg custard 12.3.1 No *
Sponge cake 12.3.2 No *
Meatloaf 12.3.3 No *
Potato gratin 12.3.4 No  *
Cake 12.3.5 No  *
Chicken 12.3.6 No *
Meat defrosting 13.3 No *
Batter Annex A No *
* Test is applicable.
1)
Except for the tests of 10.1, these tests are also applicable to combination microwave ovens when operated in
the microwave only mode.
The methods described in Clauses 8 and 9 are only applicable for appliances with microwave
function. If a combination microwave oven doesn’t provide a microwave function the tests
are not applicable. The energy consumption measurement cannot be carried out with
combined microwave function.
6.1 General
Substitute “turn table or any metal accessories” by “food support”:
When a metal food support is provided and used for the measurements, the load position
and the corresponding shape of the metal food support shall be reported,.
nd
Add the following sentence after the 2 paragraph:
If not otherwise specified the food support is placed in the cavity in its lowest position.
6.2 Supply voltage
Replace the text of 6.2, including the note, by:
The supply voltage shall be maintained at the main terminal at 230 V ± 1 % or at 400 V ± 1 %
as defined by the manufacturer’s installation guide, while the microwave operation is switched
on. The supply frequency shall be at a nominal 50 Hz ± 1 %.
The supply voltage measured during the tests shall be recorded.

- 7 - EN 60705:2012
The supply voltage shall be essentially sinusoidal.
Add the following notes:
NOTE Z1 For recording the supply voltage only the power on period is relevant.
NOTE Z2 In case of a fixed cable, the plug (or the end of the cable) is the reference point to maintain the
voltage.
6.3 Test room
Add the following requirements after the first paragraph:
For tests Clauses 8 and 9 the temperature shall be at 23 °C ± 2 °C during the complete test.
The measurement of the ambient temperature shall not be influenced by the appliance itself
or by any other appliance.
6.5 Initial condition of the oven
Replace the whole clause by:
At the beginning of each test, the oven has not been operated for a period of at least 6 h.
However, this period may be reduced if it can be demonstrated that the microwave power
output, as determined in Clause 8, is available earlier.
NOTE 1 The temperatures of the magnetron and the power supply shall be within 5 K of the ambient temperature
and 2 K of the ambient temperature for tests Clauses 8 and 9.
NOTE 2 Forced cooling may be used to assist in reducing the oven temperature.

6.Z7 Instruments and measurements
Instruments used and measurements made for this document shall comply with the following
specifications.
Table Z.1
Instruments:
Parameter UnitMinimum Minimum accuracy Additional
resolution requirements
mass g 0,5 g ± 1 g
temperature
ambient temperature °C 0,1 °C ± 1K
water load °C 0,1 °C ± 1,5 K 1 mm steel tube
diameter, class 1
according to
EN 60584-2
time s 1s ± 1 s
energy Wh - ± 1 %
Measurements:
Parameter UnitMinimum Minimum accuracy Additional
resolution requirements
Electrical energy Wh  ± 1,0 %
voltage V  ± 0,5 %
temperature and energy    sampling rate ≤ 1s
consumption measurement
For test 9.5.2 and Z1 the power W  according to EN 50564
measurement requirements shall
be in accordance with EN 50564

6.Z8 Positioning the appliance
Freestanding appliances are placed with their back against a wall and positioned away from
sidewalls, unless otherwise specified in the instructions. Other appliances are installed in
accordance with the instructions for installation.
Change headline of 7.2 Usable internal dimensions and usable volume to 7.2 Usable internal
dimensions and calculated volume.
7.2 Usable internal dimensions and calculated volume
7.2.1 General
Add the following sentence before the following note:
The turntable is essential for the operation of the appliance therefore it is not removed.
Add the following note after the first paragraph:
NOTE Safety operation should be guaranteed. Therefore necessary parts e.g. lamp cover cannot be
removed for measuring the usable volume.

- 9 - EN 60705:2012
rd
Revise reference in 7.2.1, 3 paragraph:
…according to 7.2.2 – 7.2.4.
nd
Change the 2 drawing of Figure 2b by an improved version which better shows r . Adapt also the
max
key:
c
t
r
max
d
i
Key
d usable depth   t turntable
g heating element   I inside surface of oven door
h usable height   w usable width
c centre of rotation of the turntable  r distance from c to the nearest wall
Change headine of 7.2.6 Usable volume to 7.2.6 Calculated volume
7.2.2 Usable height
Add to the first sentence:
….from the centre of the cooking cavity bottom or turntable to the lowest point on the ceiling.
7.2.6 Calculated volume
Change the wording in the first sentence “next full litre” to “nearest full litre”.
nd
Add after the 2 paragraph:
If the turntable can be switched off the rectangular volume from the dimensions width, height and
depth is calculated.
Both circular and rectangular volumes are stated.

7.2.Z7 Dimensions of food support
The usable width and usable depth of the shelf and for a round shelf the diameter are
measured. The dimensions are determined 5 mm above the surface of the shelf.
The surface area is calculated and stated in square centimetres, rounded to the nearest
10 cm .
NOTE The food support may be a shelf, a grid, baking sheet, a turntable or the bottom of cavity.
8 Determination of microwave power output
Replace the title by
8 Determination of microwave power output and energy efficiency
Add the following title:
8.1 Determination of microwave power output
nd
Revise the 2 paragraph:
A cylindrical container of borosilicate glass is used for the test as described in Clause 9,
Table Z.2. It has an external diameter of approximately 190 mm and a height of approximately
90 mm. The mass of the container is to be stated.
th nd
Revise the 4 paragraph, 2 sentence:
The food support for microwave heating is placed in the appliance according to the
instructions of manufacturers. The container is placed in the centre of this support
immediately.
Revise the formula and the key therefore:
4,187 ⋅ m()T −T + 0,55⋅ m(T −T)
w 1 0 c 1 A
P =
t
where
P is the microwave power output, in watts;
m is the mass of the water, in grams;
w
m is the mass of the container, in grams;
c
T is the ambient temperature, in degrees Celsius;
A
T is the initial temperature of the water, in degrees Celsius;
T is the final temperature of the water, in degrees Celsius;
t is the heating time, in seconds, excluding the magnetron filament heating-up time.
9 Efficiency
Change Clause 9 to 8.2 Efficiency:
8.2 Efficiency
- 11 - EN 60705:2012
Add a new Clause 9:
9 Energy consumption for the microwave function
9.1 General
The purpose of this test is to measure the energy consumption of the appliance by a defined
load and temperature rise which is considered as energy consumption for a cooking cycle.
Therefore three different water loads in glass containers which have different sizes and
shapes are used.
9.2 Test load
Three different test loads as shown in Table Z.2 are used:
Table Z.2 – test loads for measuring the energy consumption
Load Glass container, Nominal water amount (m )
w
cylindrical (in mm) pure tape water (in g)
made of borosilicate glass
Small (s) External diameter Ø 90 ± 1 275 ± 1
external height 125 ± 1
capacity 600 ml
Maximum weight 200 g
Middle (m) External diameter Ø 140 ± 1 350 ± 1
external height 76 ± 1
capacity 900 ml
Maximum weight 250 g
Large (l) External diameter Ø 190 ± 1 1000 ± 1
external height 90 ± 1
capacity 2000 ml
Maximum weight 450 g
The properties of the glass containers shall be in accordance with 3.3. The actual mass of the
used container (m ) is determined and noted. The actual mass of the water amount is
c
determined and noted (m ).
w
NOTE For calculating the energy consumption the heat capacity of the beaker is taken into account. Therefore
the theoretical energy in the beaker is calculated.

9.3 Preparation
At the start of the test the empty glass container and the appliance shall have laboratory
ambient temperature. The water is poured into the container and stirred. The temperature is
measured when the average temperature of container and water is balanced. The initial
temperature, T , shall be in the range of 10 °C ± 0, 5 °C.
NOTE 1 Water having an initial temperature 1°C – 2 °C below the target temperature minimizes the stirring time.
NOTE 2 The filled container should not be stored in the fridge to avoid the rims getting too cold.
NOTE 3 To guarantee a sufficient stirring a thermocouple with a plastic adapter should be used. An example is
described in Annex ZB. The stirrer should have a low heat capacity.

9.4 Positioning the load in the appliance
The food support for microwave heating is placed in the appliance according to the
instructions of manufacturers. The container is placed in the centre of this support
immediately.
If no instructions are given the container is placed in the centre of the turntable or
reciprocating tray. If the appliance is not fitted with a turntable or reciprocating tray the load is
placed on the lowest possible shelf position.
9.5 Measurement of energy consumption for a cooking cycle
The energy consumption for a cooking cycle is measured.
Two tests are performed for each amount of water (see 9.2):
The measurement shall be started by switching on the appliance within 30 s after the
preparation of the water load. The power control for the microwave function is set to the
highest possible position. If available the measurements are made with boost function.
The oven is operated and the time for the water to reach a temperature in between 60 °C and
65 °C (T ) is measured (t ). The oven is then switched off. The water load is removed from
high high
the oven and positioned on a thermally insulating pad. The water is stirred with the
thermometer and the final temperature is measured within 20 s after heating is finished.
The oven is cooled down (see 6.5) and the measurement with the same water load is
repeated with a target temperature of 55 °C - 60 °C (T ). The time is measured (t ).
low low
The difference between T and T shall be minimum 2 K, otherwise one of the
high low
measurements shall be repeated with an adjusted time.
This procedure is carried out for each load defined in 9.2.
The following data shall be recorded for each water load:
– heating time t and t in seconds; including the magnetron filament heating-up time;
low high
– initial temperature T in °C;
– final temperature T and T in °C;
low high
– energy consumption W and W in Wh;
low high
– ambient temperature in °C at the start of the test (when the water is positioned in the
appliance);
– actual and nominal mass of water, in grams.
NOTE 1 The energy consumption of components such as lamps and fans, which are automatically switched on
with the appliance, is included in the measurement.
NOTE 2 The recording of the heating time t and t are informative and simplify the measurement. Therefore
low high
the magnetron filament heating-up time is included.
NOTE 3 It is recommended to start with the higher temperature range of 60 °C – 65 °C (T ).
high
NOTE 4 To guarantee a sufficient stirring a thermocouple with a plastic adapter should be used. Examples are
described in Annex ZB. The stirrer should have a low heat capacity.

- 13 - EN 60705:2012
9.6 Calculation for the energy consumption of a cooking cycle
The energy consumption to reach a temperature increase of 50 K (W ) is calculated for each
load (see 9.2) using the linear regression based on the measured data points.
The temperature rise (∆T) is calculated as the difference between the initial temperature T
and final temperature T or T
low high.
∆ T = T − T
(1a)
high high 0
∆ T = T − T
(1b)
low low 0
To calculate the total temperature rise the heat capacity of the container is considered as
follows for ∆T and ∆T
high low
0 ,55 × m × ∆ T
c high
total ∆ T = + ∆ T
high high (2a)
4 ,187 × m
w
0 ,55 × m × ∆ T
c low
total ∆ T = + ∆ T
low low (2b)
4 ,187 × m
w
where
m is the actual mass of the water, in grams;
w
m is the nominal mass of water (275 g, 350 g, 1 000 g);
w,n
m is the actual mass of the container, in grams;
c
T is the initial temperature of the water, in degrees Celsius;
T is the final temperature of the water for the low temperature range, in degrees Celsius;
low
T is the final temperature of the water for the high temperature range, in degrees Celsius;
high
The total temperature rise (total ∆T) is normalized by the actual load.
m
w
norm ∆ T = total ∆ T ×
high high
(3a)
m
w , n
m
w
norm ∆ T = total ∆ T ×
low low
(3b)
m
w , n
The quotient of energy consumption per temperature rise (Q) in Wh/K is calculated.
(W − W )
high low
Q =
(4)
()norm ∆ T − norm ∆ T
high low
The energy consumption to heat up the amount of water by 50 K (W ) is calculated.
W =W + Q×()50 − norm∆T
(5)
50 low low
W is determined for the small, middle and large load and noted.
9.7 Final result
The final result (W ) is calculated by sum the calculated energy consumption to reach 50 K
final
(see 9.6) from the small (s), middle (m) and large (l) load.
3×W + 6×W + 2×W
50,s 50,m 50,l
W =
final, cooking cycle
This final energy consumption W represents the energy consumption for an average cook
final
cycle for microwave cooking energy consumption.
NOTE 1 The weighting factors are related to average household use and represent typical loads.
NOTE 2 The cooling down period energy consumption is not taken into account in the final energy consumption.
NOTE 3 As an example for data and calculation sheet, see Annex ZE. An Excel 97-2003 evaluation program,
which corresponds directly to Annex ZE, is available with this standard for the automatic calculation of the energy
consumption (Clause 9). These calculations can also be made in any other spreadsheet program under the
condition that the same results are achieved.
9.8 Reporting of test results
The following data shall be reported:
a) microwave power output measured according 8.1;
b) type of the appliance, available heating function(s);
c) fitted with turntable or reciprocating tray;
d) position of the loads;
e) supply voltage at which the measurements were made;
f) energy consumption in Wh rounded to one decimal according to 9.6 for each load;
g) final result per cooking cycle, W , in Wh to one decimal according to 9.7.
final
Add two new clauses:
Z.1 Measurement Uncertainty of results
Z.1.1 Energy consumption for a cooking cycle
The energy consumptions determined according to 9.7 shall not be greater than the value
declared by the manufacturer plus 15 %.
If the result of the test carried out on the first appliance is greater than the declared value
plus 15 % the test shall be carried out on a further three appliances, which shall be randomly
selected from the market.
- 15 - EN 60705:2012
The arithmetical mean of the values of these three appliances shall not be greater than the
declared value plus 10 %.
Z.1.2 Result of microwave power output
The result of microwave power output according to 8.1 shall not be lower than the value
declared by the manufacturer minus 15 %.
If the result of the test carried out on the first appliance is lower than the declared value
minus 15 % the test shall be carried out on a further three appliances, which shall be
randomly selected from the market.
The arithmetical mean of the values of these three appliances shall not be lower than the
declared value minus 10 %.
Z.2 Consumption measurement of low power modes
In addition to EN 50564 following requirements are given.
For an appliance composed of a combination of separate units which may consist of one of a
variety of different hobs and one of a variety of different ovens the recommended combination
as declared in the manufacturer’s instruction are used for the test. If appliance A (e.g. hob)
can only be operated combined with appliance B (e.g. oven), first the low power mode for
appliance B without appliance A is measured and noted. Afterwards the low power mode for
the appliance B combined with the appliance A is measured. The low power consumption of
appliance A is calculated by the difference between these two measurements.
When preparing the test report for an appliance composed of a combination of separate units
the combination of types of main powered parts (hobs, ovens, grills, warming plates, griddles
etc) used for the measurement shall be recorded. The consumption of low power modes shall
be noted for each unit A and B separately.
NOTE The measurement procedure for energy consumption of hobs is described in EN 60350-2 and for ovens it
is described in EN 60350-1.
When testing appliances that are fitted with a clock, the clock shall be adjusted to the correct
time and date as specified in the instructions.
In case energy consumption is influenced by continuous changing displayed time of a clock, a
measurement period of 24 h is necessary. The average value from this measurement is noted.

If the appliance has an ambient light sensor, two illuminance levels in accordance to
EN 50564 shall be measured during the 24 h period, each illuminance level for 12 h.
If an option is provided to the user to switch off the display both the switched on and switched
off mode is to be tested and reported.

10.2.1 Procedure
nd
Substitute in the paragraph after the Figure 3, 2 sentence “shelf” by “food support”.
10.3.1 Procedure
rd
Substitute in the paragraph after the Figure 4, 3 sentence “oven shelf” by “food support”.
Change in Figure 5a “shelves” by “food supports”.
Adapt also the in Figure 5a included sentence:

Cup 3 is placed at the centre of the food support. The other cups are placed on the diagonal
midway between the centre and each corner.
Add a note after Figure 4 – Cup:
NOTE Possible supplier: Schott Duran Beaker, catalogue number: 21 11 624, high form, with sprout, capacity: 100
ml, external diameter at the bottom: 48mm, height: 80mm.
11.1.2 Procedure
st rd
Substitute in the 1 paragraph, 3 sentence “shelf” by “food support”.
Change in Figure 6a and 6b “shelves” by “food supports”.
Change in Figure 6c and 6d “circular shelves” by “turntables”.
11.2.2 Procedure
st
Substitute in the paragraph after Figure 7, 1 sentence “shelf” by “food support”.
12.3.1.4 Procedure
nd nd
Substitute in the 2 paragraph, 2 sentence “shelf” by “food support”.
12.3.2.4 Procedure
nd nd
Substitute in the 2 paragraph, 2 sentence “shelf” by “food support”.
12.3.3.4 Procedure
nd nd
Substitute in the 2 paragraph, 2 sentence “shelf” by “food support”.
12.3.5.4 Procedure
nd
Substitute in the 2 paragraph, 1st sentence “in the oven” by “on the food support”.
12.3.6.4 Procedure
nd st
Substitute in the 2 paragraph, 1 sentence as following:
Remove the clingfilm and place the chicken on the food support as described in the
manufacturer’s instruction. Cook according to the manufacturer’s instructions. The microwave
and thermal heat may be used simultaneously or sequentially in accordance with the
manufacturer’s instructions. If instructions are not provided, place the chicken in the centre of
the food support and set the controls as appropriate for this type of food.

- 17 - EN 60705:2012
Add the following annexes.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
1)
IEC 60350-1 (mod) 2011 Household electric cooking appliances - EN 60350-1 201X
Part 1: Ranges, ovens, steam ovens
and grills - Methods for measuring
performance
IEC 60584-2 1982 Thermocouples - EN 60584-2 1993
+ A1 1989 Part 2: Tolerances
EN 50564 2011 Electrical and electronic household and - -
office equipment - Measurement of low
power consumption
ISO 80000-1 2009 Quantities and units - - -
Part 1: General
1)
At draft stage.
Annex ZB
(informative)
Stirrer
This annex specifies the thermocouple with a plastic adapter to sustain a homogenous
temperature in the water load. This thermocouple with stirring adapter should be used in
Clauses 8 and 9. A thermocouple according to 6.7 should be used.
Material: Makrolon
Heat capacity: 1, 17 kJ/kgK
Figure ZB.1 – plastic stirring adapter

Figure ZB.2– example stirrer
- 19 - EN 60705:2012
Annex ZC
(informative)
Glass container for Clauses 8 and 9

A possible supplier is Duran. Following Cat.-No. are relevant for the glass container used in
Clauses 8 and 9.
Table ZC.1
Load Glass container, cylindrical Nominal Possible supplier glass
(in mm) water container
made of borosilicate glass amount
(m )
w
pure tape
water (in g)
Small (s) External diameter d Ø 90 ± 1 275 ± 1 Duran Cat.-No
(clause 9) external height h 125 ± 1 2110648
capacity 600 ml “Beaker low height”
Maximum weight 200 g
Middle (m) External diameter d Ø 140 ± 1 350 ± 1 Duran Cat.-No 2131354
(clause 9) external height h 76 ± 1 “Crystallizing dish”
capacity 900 ml
Maximum weight 250 g
Large (l) External diameter d Ø 190 ± 1 1000 ± 1 Duran Cat.-No 2131359
(clause 8 external height h 90 ± 1 “Crystallizing dish”
and 9) capacity 2000 ml
Maximum weight 450 g
Figure ZC.1 shows how to measure the dimensions from the recommended containers.

Figure ZC.1 – Example: small beaker – 600 ml

Annex ZD
(informative)
Energy consumption for the cooling down period
For measuring the energy consumption of the cooling down period the loads according to
Table Z.2 are placed in the appliance according to 9.4.
NOTE 1 As residual heat from components influence the duration of ventilation the appliance should be cooled
consequently before measuring, at least for more than 6 h.
The heating shall be started by switching on the appliance within 30 s after the preparation of
the water load. The power control for the microwave function is set to the highest possible
position. If available the measurements are made with boost function.
The heating time is calculated for a temperature rise of 50 K determined by 9.5 rounded to
seconds as follows:
The quotient of time per temperature rise (Q ) in seconds/K is calculated.
50, t
(t − t )
high low
Q =
(1)
50 , t
()norm ∆ T − norm ∆ T
high low
NOTE 2 Definitions for norm ∆T and norm ∆T are given in 9.6 formula 3a and 3b.
high low
The time to heat up the amount of water by 50 K (t ) is calculated.
t =t + Q ×()50 − norm∆T
(2)
50 low 50 low
The time for operating the oven t is calculated for each load separately.
After the respective heating up time t for the small, middle and large load is up, then the
appliance is set to off mode. If the appliance doesn’t offer an off mode it is set to standby
mode.
The load is removed and the door shall be closed after (30 ± 2) s. The measurement of the
energy consumption is started immediately when the appliance is set to off mode (see Figure
ZD.1).
- 21 - EN 60705:2012
Set to off
mode
transition to low
Cooling down period for
power mode
15 min ± 1 min
P(W)
unload oven and close
the door 30 s ±± 2 s after
±±
switching off
cooling down period
Figure ZD.1 - Phases of energy consumption measurement -example
The measurement is stopped after 15 min ± 2 s independent if the ventilation stops
automatically.
The energy consumption for the cooling down period W is noted in Wh for each load.
v
Ensure that the following conditions remain relevant for the duration of the measurement:
• connected to mains power for the duration of the test;
• no network is connected to the product.
Energy consumption
according to 9.5
Annex ZE
(informative)
Table ZE.1 – Data and calculation sheet: Energy consumption for a cooking cycle with microwave function (Clause 9) (1 of 2)

NOTE Cells with content “calc.” should be calculated.

– 23 – EN 60705:2012
Table ZE.1 – Data and calculation sheet: Energy consumption for a cooking cycle with microwave function (Clause 9) (2 of 2)

NOTE Cells with content “calc.” should be calculated.

IEC 60705 ®
Edition 4.0 2010-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household microwave ovens – Methods for measuring performance

Fours à micro-ondes à usage domestique – Méthodes de mesure de l'aptitude
à la fonction
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
V
CODE PRIX
ICS 97.040.20 ISBN 978-2-88910-257-0
– 2 – 60705 © IEC:2010
CONTENTS
FOREWORD.04
1 Scope.1H1H6
2 Normative references.2H2H6
3 Terms and definitions .3H3H6
4 Classification .4H4H7
4.1 According to type.5H5H7
4.2 According to characteristics .6H6H7
5 List of measurements .7H7H7
6 General conditions for measurements .8H8H8
6.1 General .9H9H8
6.2 Supply voltage .10H10H8
6.3 Test room.11H11H8
6.4 Water .12H12H8
6.5 Initial condition of the oven .13H13H8
6.6 Control setting .14H14H8
7 Dimensions and volume.15H15H8
7.1 External dimensions .16H16H8
7.2 Usable internal dimensions and usable volume .17H17H9
7.2.1 General .18H18H9
7.2.2 Usable height.19H19H11
7.2.3 Usable width .20H20H12
7.2.4 Usable depth .21H21H12
7.2.5 Reciprocating tray.22H22H12
7.2.6 Usable volume.23H23H12
7.3 Overall internal dimensions and overall volume .24H24H12
7.3.1 General .25H25H12
7.3.2 Overall height (H) .26H26H13
7.3.3 Overall width (W) .27H27H13
7.3.4 Overall depth (D) .28H28H13
7.3.5 Overall volume of rectangular cavities .29H29H13
7.3.6 Overall volume of non-rectangular cavities .30H30H13
8 Determination of microwave power output .31H31H13
9 Efficiency.32H32H14
10 Technical tests for performance .33H33H15
10.1 General .34H34H15
10.2 Square tank test .35H35H15
10.2.1 Procedure.36H36H15
10.2.2 Evaluation.37H37H16
10.3 Multiple cup test .38H38H16
10.3.1 Procedure.39H39H16
10.3.2 Evaluation.40H40H18
11 Heating performance .41H41H18
11.1 Heating beverages.42H42H18
11.1.1 General .43H43H18
11.1.2 Procedure.44H44H18

60705 © IEC:2010 – 3 –
11.1.3 Evaluation.45H45H19
11.2 Heating simulated food .46H46H19
11.2.1 Test purpose .47H47H19
11.2.2 Procedure.48H48H19
11.2.3 Evaluation.49H49H20
12 Cooking performance.50H50H20
12.1 General .51H51H20
12.2 Evaluation .52H52H20
12.3 Tests.53H53H21
12.3.1 Egg custard .54H54H21
12.3.2 Sponge cake.55H55H21
12.3.3 Meatloaf .
...