DSH 639 Definitions

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DSH 639 % h9 N; {' y; r1 r% |! J

Definitions & j$ Y. y- X( ?

3.1.6

60335-2-6(ed.5)

Question:
4 n  ^% F$ e; g0 l% c' p3 H+ RTaking into account the definitions stated in clause 3:
3.1.6 Note 101: "For appliances having more than three heating units per phase, a diversity factor is applied to the rated current or rated power input when determining the current used to establish the size of the terminals and the nominal cross-sectional area of the supply cord. The diversity factor F is calculated from the following formula, where N is the number of heating units per phase that can be energized together:
; L9 V& ]# z4 b) W3 n/ n0,65
6 x! \0 m" X; u- ^! E) I4 e3 NF = 0,35 + ------- "
square root N
- J9 S! `% X; y: l& O" s3.108 induction hob: hob containing at least one induction hob element.
4 z  @4 M7 T* T' O9 c; o7 r# [6 q" w; d3.112 induction hob element: hob element that heats metallic vessels by means of eddy currents.
& p% \' d& B- P7 Q3.109 heating unit: any part of the appliance that fulfils an independent cooking or warming function.
Consider the application of diversity factor to the following induction appliance (see schematic circuit) where:
% X  a  ~+ U3 k3 z: d- the induction hob is composed of 2 induction generators which fulfil an independent cooking and
8 a% O9 g1 T$ M) [3 m" t- each induction generator is composed of 2 induction hob elements which are not independent together- the power input of the induction generator is distributed between 2 induction hob elements?
Decision:
1 x* z. S0 Y) b) {7 VFor this case, the diversity factor is not applicable if the power input does not vary when the hob elements of the same generator are working together or separate.It is applicable, if the power input with both operating is the sum of each unit operating alone.
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