A06B-6058-H013
A06B-6058-H013对于Ex ib环境,检查员可以使用其单个可数故障在内部短路IC上的所有引脚,以分析由此产生的故障。虽然适当额定的冗余齐纳二极管可以放置在 LT4356 的输出端以提供一个电压限值,但在任何可观的功率水平下,指定这些齐纳二极管的成本和难度使得简单地复制整个栅更具成本效益。请注意,对于Ex ia应用,需要三重式屏障或带有串联无懈可击电阻的两个屏障才能满足双故障分析规则。
从这里开始,我们假设遵循间距和热上升、元件额定值、PCB粘接宽度和冗余规则,并且电路不会因可数或不可数故障而失效。剩下的问题是火花点火能量。为此,LT4356 可能没有用处,具体取决于应用。
A06B-6058-H013
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