Specifications

Chapter 4 - Transient Protection of RS-422 and RS-485 Systems RS-422 And RS-485 Applications Ebook
Page 51 of 137 Manual Documentation Number: <DocNumber>
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The specified current waveform for this surge has an 8 µs rise time
with a 20 µs decay into a short circuit.
Figure 36: Combination Wave Current Waveform
Open circuit voltages levels from 1 kV to 6 kV are commonly used in
both the positive and negative polarities, although, under some
circumstances, voltages as high as 20 kV may be applied.