IEC 60350-1-2021 pdf free download – Household electric cooking appliances – Part 1: Ranges, ovens, steam ovens and grills – Methods for measuring performance.
For tests 7.2,7.4 and 7.5.3:
– the supply voltage shall be maintained at the main terminal at the rated voltage ±1 %，while the heating elements are switched on;
the supply frequency shall be at the rated frequency ±1 % throughout the test. lf afrequency range is indicated, then the test frequency shall be the nominal frequency of thecountry in which the appliance is intended to be used.
NOTE Iln case of a fixed cable, the plug (or the end of the cable) is the reference point to maintain the voltage.
For Clause 12 and Annex G, the power measurement requirements shall be in accordancewith lEC 62301.
5.3lnstrumentation
The temperature measuring instrument including thermocouples shall have an accuracy of±0,5 K within the temperature range of 0 °C to 100 “C and an accuracy of ± 2 K within thetemperature range 10o c to 3o0 °c.
The energy measuring meter shall have an accuracy of ± 1 % of the reading.
For tests 7.2 and 7.4:
– air temperature measurements in the empty oven are made with a thermocouple with a
welded point (not with a black copper plate);
temperature measurements in the brick (see 7.4) are made with two thermocouples with a1 mm steel tube diameter,class 1 according to lEC 60584-2.The thermocouple shall beaccurate to ± 1,5 K;
NOTE The steel tube of the thermocouple eases the insertion of the thermocouple into the brick.Other typesof thermocouples can be used provided they are shown to give the same results. The measuring point is thefirst contact point of the two thermo wires.
the temperature measurement system excluding the thermocouple shall be accurate to士1,0 K;
– the energy measurements shall be accurate to ± 1.5 % of the reading or ±10 Wh whatever
is the greater;
the measurement of the voltage shall be accurate to ±0,5 % of the reading;the measurements of mass shall be accurate to 土 3 g;
– the measurements of time shall be accurate to 主 5 s;
– the scale for weighing the ingredients shall be accurate to ± 0,1 g.
For tests according to Clause 8 the temperature measurements in the load are made with a0,5 mm steel tube diameter,class 1 according to lEC 60584-2.The thermocouple shall beaccurate to 主1,5 K.
For Clause 12 and Annex G, the measurement requirements shall be in accordance withIEC62301.
5.4Positioning the appliance
Built-in appliances are installed in accordance with the instructions for installation.Otherappliances are placed with their back against a wall,unless otherwise specified in theinstructions.
Floor-standing appliances are positioned between kitchen cabinets. Table-top appliances are positioned away from side walls.
For installation of the appliance it should be ensured that the surface is horizontal.
For tests 7.2 and 7.4 on ovens with integrated air-extraction by a fan (or similar device) to theoutside of the building, the air outlet is discharged into a flue which has a pressure drop of50 Pa when there is an airflow of 200 m3/h.
NOTE The condition of measurement for ovens with integrated air-extraction is similar to that in lEC 61591.5.5Preheating
The appliance is initially at room temperature.However，if preheating is specified，theappliance is preheated in accordance with the instructions for use. If no instructions are given,the appliance is considered to be preheated after the thermostat has switched off the firsttime.
5.6Setting of controls
The control is set to give the temperature specified for the test.However, if the temperaturecannot be attained due to the construction of the control,the nearest setting related to thespecified temperature is chosen.
The appliance is operated for all tests in the delivery status with unchanged default settings.Ensure that no network is connected to the appliance for the duration of the measurement.
5.7Rounding
lf it is required that numbers are rounded, they shall be rounded according to ISo 80000-1:2009,clause B.3, rule B.
6 Dimensions and mass6.1overall dimensions
The overall dimensions of the appliance are measured and stated in millimetres as follows:
Cooking ranges and other appliances placed on a surface are measured as shown inFigure 2.
Built-in ovens are measured as shown in Figure 3.IEC 60350-1 pdf download.