Rockwell Automation Sensia Jiskoot InSpec Remote I/O HUB, Инструкция по установке, эксплуатации и обслуживанию

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Section 4: Field Connections InSpec Remote I/O HUB (ATEX, IECEx)
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CanHigh Applications (GM Int. D5030D) Model Numbers:
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For installations in which both the Ci and Li of the Intrinsically Safe apparatus exceed 1% of the Co and
Lo parameters of the Associated Apparatus (excluding the cable), then 50% of Co and Lo parameters are
applicable and shall not be exceeded
(50% of the Co and Lo become the limits which must include the cable
such that Ci C cable ≤ 50% of Co and Li L cable ≤ 50% of Lo). The reduced capacitance of the
external circuit (including cable) shall not be greater than 1 μ F for Groups I, IIA, IIB and 600 nF for Group IIC. If
the cable parameters are unknown, the following value may be used: Capacitance 200pF per meter (60pF per
foot), Inductance 1
μ H per meter (0.20 μ H per foot).