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45.4 Ground fuse
# q0 S! K) ? v: ]) h3 QThe ground fuse shall be connected between the enclosure and earth ground, with the main input ground connection removed.
9 I8 ` z' O, N. u The ground fuse shall be connected between the enclosure and the main input power terminal judged least at risk of arcing to earth ground, with the main input ground connection removed. For 3-phase drives, the main input power terminal judged least at risk of arcing to earth ground is the L2 terminal.3 |9 W% S9 u8 `
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最近有在研究UL508C,本身英文不好,对其中的部分意思理解不了,还请大家帮帮忙~
9 c- N: W/ u! X5 |6 l+ R1.main input ground connection removed是如何理解的7 `' r0 Q8 v4 E0 P: t, v! o+ ^
2.提到的L2 terminal是指输入L1,L2,L3中的L2吗? |
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