IEC 60705 pdf download

IEC 60705 pdf download.Household microwave ovens – Methods for measuring performance
1 Scope
This International Standard applies to microwave ovens for household use. It also applies to combination microwave ovens. This standard defines the main performance characteristics of household microwave ovens which are of interest to the user, and it specifies methods for measuring these characteristics. NOTE 1 This standard does not deal with – ovens which cannot accept a load having a diameter of ≥200 mm; – safety requirements (see IEC 60335-2-25 [1 ] 1 F 0 F * and IEC 60335-2-90 [2]). NOTE 2 This standard does not apply to ovens incorporating conventional heating means only (see IEC 60350) [3].
2 Normative references
The following referenced documents are indispensable for the application 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 80000-1 :2009, Quantities and units – Part 1: General
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply. 3.1 microwave oven appliance using electromagnetic energy in the ISM frequency band of 2 450 MHz, for heating food and beverages in the cavity NOTE 1 The microwave oven may incorporate a browning element. NOTE 2 ISM frequency bands are the electromagnetic frequencies established by the ITU and reproduced in CISPR 1 1 [4]. 3.2 combination microwave oven microwave oven in which the microwave energy is combined with thermal energy 3.3 microwave transparent property of a material having negligible absorption and reflection of microwaves NOTE The relative permittivity of a microwave transparent material is less than 7 and the relative loss factor is less than 0,01 5.
6 General conditions for measurements
6.1 General Unless otherwise specified, the measurements are made under the following conditions. When a metal turn table or any metal accessories are provided and used for the measurements, the load position and the corresponding shape of the metal turn table or any metal accessories shall be reported, together with the test results. NOTE The positioning influences the repeatability of the test results. If numbers have to be rounded, they shall be rounded to the nearest 50 W according to ISO 80000-1 :2009, Annex B.3 Rule B. If the rounding takes place to the right of the comma, the omitted places shall not be filled with Zeros. 6.2 Supply voltage The appliance is supplied at rated voltage ± 1 %. If the appliance has a rated voltage range, the tests are carried out at the nominal voltage of the country where the appliance is intended to be used. This voltage is stated in the report. NOTE The supply voltage should be essentially sinusoidal. Results of the tests may otherwise be affected. 6.3 Test room The tests are carried out in a substantially draught-free room in which the ambient temperature is maintained at 20 ° C ± 5 ° C. 6.4 Water Potable water is used for the tests.6.5 Initial condition of the oven At the beginning of each test, – the temperatures of the magnetron and the power supply shall be within 5 K of the ambient temperature, or – 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 Forced cooling may be used to assist in reducing the oven temperature. 6.6 Control setting The tests are carried out with the controls set to give the highest power output. Unless otherwise specified the measurements are made with boost function, if available.
7 Dimensions and volume
7.1 External dimensions The overall height, width and depth of the appliance, excluding any knobs and handles on the front surface, are measured. The depth is also measured with the door fully open. The dimensions are shown in Figure 1. If adjustable feet are provided, the height of the appliance is determined with the feet in their minimum and maximum positions.