加热管 温控器设计 A.单相机器,带plug,也不是全极断开。 如图, 1. 我们的机器用一个EGO的毛细管温控器加在加热管的一端非正常测试做干烧时,可以满足19.4和19.5的要求吗? 2. 如果不可以的话,我们EGO有3 poles的型号,我将2极接在加热管的两端可以满足吗? 加热管连接示意图 1 pole 温控 3poles 温控
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B.三相器具,固定接线,不带插头;开关控制接触器可以全极断开 如图 一个EGO,有3poles,分别接到三根加热管的一端。 这样应该可以避开19.5的测试,但是19.4的可以满足吗? 如果不行,可以采取什么样的方法来解决这个问题? 三相接线示意图 下面60335-1,19.4-19.5标准 19.4 The appliance is tested under the conditions specified in Clause 11. Any control that limits the temperature during the test of Clause 11 is short-circuited. If the appliance incorporates more than one control, they are short-circuited in turn. 19.5 The test of 19.4 is repeated on class 0I appliances and class I appliances incorporating tubular sheathed or embedded heating elements. However, controls are not short-circuited but one end of the element is connected to the sheath of the heating element. This test is repeated with the polarity of the supply to the appliance reversed and with the other end of the element connected to the sheath. The test is not carried out on appliances intended to be permanently connected to fixed wiring and on appliances where an all-pole disconnection occurs during the test of 19.4. Appliances with a neutral are tested with the neutral connected to the sheath. NOTE For embedded heating elements, the metal enclosure is considered to be the sheath. file:///C:/Users/MECHO~1.WAN/AppData/Local/Temp/msohtmlclip1/01/clip_image013.png; M7 L$ U/ ^ E# j/ n
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