AS/NZS 60335.2.25:2020 pdf download.Household and similar electrical appliances – Safety Part 2.25: Particular requirements for microwave ovens, including combination microwave ovens.
12 Void
13 Leakage current and electric strength at operating temperature
This clause of Part 1 is applicable.
14 Transient overvoltages
This clause of Part 1 is applicable.
15 Moisture resistance
This clause of Part 1 is applicable except as follows.
15.2 Addition:
A quantity of 0,5 I of the same spillage solution is poured steadily over the shelf over a period of 1 mm. lithe shelf can collect spilled liquid, it is filled with the solution and a further 0,5 I is then added over a period of 1 mm.
15.101 Temperature-sensing probes shall be constructed so that their insulation is not affected by water.
Compliance is checIed by the following test.
The probe is completely immersed in water containing approximately 1 % NaCI and having a temperature of 20 °C ± 5 °C. The solution is heated to the boiling point in approximately 15 mm. The probe is then removed from the boiling solution and immersed in the solution having a temperature of 20 °C ± 5 °C for 30 mm.
This procedure is carried out five times, after which (he probe is removed from (he solution. All traces of liquid are then removed from the surface.
The probe shall then withstand the leakage current test of 16.2.
NOTE Detachable temperature-sensing probes are not connected to the appliance for this lest. Non-detachable temperature-sensing probes we tested in the cavity, the probe being immersed as much as possib[e.
15.102 Microwave ovens intended to be built-in as underbench installation and therefore subject to spillage of liquid from containers onto working surfaces shall be constructed so that such spillage does not affect their electrical insulation.
Compliance is checked by the following test (see Figure 102).
The microwave oven is built-in as underbench installation as specified by the manufacturer. The test cabinet including the working surface is tilted to an angle 012° in the most unfavourable direction. 500 ml of water containing approximately 1 % NaCI and approximately 0,6 % acid rinsing agent is poured steadily over a period of 20 s through a funnel onto the complete width of the working surface above the microwave oven. The funnel has an outlet diameter of approximately 8 mm and the lower edge of its outlet is positioned 20 mm above the working surface. The centre of the funnel is positioned 15 mm inwards from the leading edge of the working surface,
The leading edge of the working surface shall be rounded with a radius of 25 mm and the working surface shall be 50 mm in thickness and free of any drain slots, drain edges, tearing edges and similar.
Immediately after the test, the appliance shall withstand the electric strength test of 16.3 and inspection shall show that there is no trace of water on insulation that could result in a reduction of clearances or creepage distances below the values specified in Clause 29.AS/NZS 60335.2.25 pdf download.