DSH 574 Definitions

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广东安规检测
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小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

各种灯头量规现货

灼热丝试验机现货

GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

稳定性试验台

家电温升测试角

针焰试验机现货

热电偶焊机现货

家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

DSH 574 4 a6 b5 q) ^3 M8 ]2 e$ V" a6 d

Definitions

3.1.6 7 r! n# |; A! k! C* z

60335-2-6(ed.5)

Question:
3 F$ U4 _8 @2 U0 `$ S) s0 hAccording 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.
. ]+ M2 T- G; I. q$ m  Y% cSince there are different opinions in application of diversity factor we think a clarification is needed.
a) Is the diversity factor (F) applicable in case 1 below
& D8 ]* k5 ]$ s% w4 ^& {1 Cb) Is the diversity factor (F) applicable in case 2 with and without the optional heating unit.
Decision:
- w/ j7 W) }" d. j# y2 `. H! vFor the case 1 presented it was considered that is under the conditions requested by 3.1.6 to apply the factor.
For 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).
- R( v( ?# X) g
/ }4 i; c# g4 s8 L3 o: {& u% w7 i/ W
  w. ?8 G& l8 @0 D( y! M( G! A