IEC 60350-1:2021 pdf download-Household electric cooking appliances – Part 1: Ranges, ovens, steam ovens and grills – Methods for measuring performance.
5.5 Preheating The appliance is initially at room temperature. However, if preheating is specified, the appliance 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 first time. 5.6 Setting of controls The control is set to give the temperature specified for the test. However, if the temperature cannot be attained due to the construction of the control, the nearest setting related to the specified 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. 5.7 Rounding If 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 mass 6.1 Overall 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 in Figure 2. Built-in ovens are measured as shown in Figure 3.
6.2.2 Usable height The usable height is the maximum length of a cylinder with a diameter of 200 mm reaching vertically from the centre of the cavity floor to the lowest point on the ceiling. The lowest point of the ceiling can be constituted by a lamp, a heating element or similar object in the area of the cylinder. In the event that either the width or the depth of the cavity is less than 250 mm, the diameter of the cylinder to be measured shall be reduced to 1 20 mm. NOTE The centre of the cavity bottom is defined by the middle of the usable depth and the middle of the usable width. 6.2.3 Usable width The usable width is the maximum length of a cylinder with a diameter of 200 mm reaching horizontally from the left-hand side wall to the right-hand side wall of the cavity. In the event that either the height or the depth of the cavity is less than 250 mm, the diameter of the cylinder to be measured shall be reduced to 1 20 mm. NOTE The centre of the side wall of the cavity is defined by the middle of the usable depth and the middle of the usable height.