B-field Exposure From Induction Cooking Appliances 10
In Table 1, the maximum rated power of each hob is given without and with the booster
function for each model. The total power of the appliance is also provided (sum of the specified
maximum power of each hob without booster). The booster function permits the application
of additonal power to a specific hob, with the limitation that not all hobs are available for use;
otherwise the maximum rated power would be exceeded. Table 1 lists the number of hobs with
the booster function available.
built-in equipment characteristics All built-in appliances in Table 1 have four hobs, except
the Gaggenau VI 411-110 model, which has a single-hob. The hobs have different sizes, with
diameters varying from 10 cm to 23 cm. The appliances have a compact layout (approx. 60 cm
width, 55 cm length) without extra warming zones. The surface is a glass-ceramic plate, with an
integrated control panel in the front. All built-in appliances in Table 1 require two-phase mains
power (230 V and 16 A), and suitable pots are automatically detected. The booster function is
available on two or all four hobs or is not available. The booster function is usually labeled P
(for power) and corresponds to the highest heat setting.
Portable equipment characteristics The characteristics of portable induction cooking ap-
pliances are similar to those of built-in equipment. The portable Inducs appliances have one
or two hobs, which have a higher rated power than built-in appliances. The Inducs model
SH/DU/BA 5000 operates on a three-phase mains power supply.
Comparison and selection of three induction cookers Table 1 facilitates the comparison
and selection of three representative appliances. It is expected that the appliances exhibiting
the worst-case B-field exposure will be those with the highest hob rated power. The position of
the strongest hob with respect to the user is also considered and given for each model in Table
1 (front or rear). To perform a worst-case assessment, appliances with the strongest hob in the
front were selected.
One portable and two built-in appliances have been selected for experimental evaluation.
From groups with similar technical data, only the cheapest was chosen. It has been decided
not to follow the initial proposal, that one device shall be as similar as possible to the original
cooker used by Yamazaki et al. (domestic induction cooker, 1.3 kW, with a casting pot filled
80 % with water), since it is a much low power device and such devices are not readily available
on the Swiss market. The selection is depicted in Figure 3 and includes:
• Appliance 1: Electrolux GK58TCi (built-in)
• Appliance 2: Gaggenau CI 261 110 (built-in)
• Appliance 3: Inducs SH/BA 5000 (portable)
3.2.2 Characteristics of the three selected Induction Cookers
Dimensions and coordinate system The dimensions of the three appliances and the coor-
dinate systems used in the measurements are shown in Figures 4 and 5.
Numbering of the hobs The hobs are numbered as shown in Figure 6. The rated hob power
for each appliance is given in Table 1.
