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|  DSH 574* E, R: _ f, L0 L2 `' T
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| Definitions F$ q! ^6 r. ~) Y" x
| 3.1.6
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Question:( `/ P1 u G; [5 B8 Q$ ~8 F! O
According to IEC 60335-2-6:2003 sub-clause 3.1.6, a diversity factor is applied for appliances having more than three heating units per phase.
+ T! ^$ _" C9 s6 w m+ \" |& qSince there are different opinions in application of diversity factor we think a clarification is needed.
7 f4 |7 n' D6 s" I; d% ?( Pa) Is the diversity factor (F) applicable in case 1 below
9 B/ o6 F8 y/ P: F, p" Zb) Is the diversity factor (F) applicable in case 2 with and without the optional heating unit.# X* h) _) R# t/ T
Decision:) h7 k: n# I! K9 ?
For the case 1 presented it was considered that is under the conditions requested by 3.1.6 to apply the factor.
( k y. Q5 g b& t/ |1 Y: w6 ?8 UFor the case 2, it was considered that is under conditions requested by 3.1.6 (4 units per phase) when the optional unit is connected. In case that the optional unit is not connected, 1 phase (L3 in the drawing) may use the factor (4 units/phase) and the others cannot use it (3 units/phase).
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发表于 2012-9-8 20:43
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