GEN7iB
203
INPUT CARDS
INPUT CARDS
12
12.2.9 GN310B/GN311B Isolation Current channel
Thespecied±20VDCvoltagerangeoftheCurrentchannelinputsinvoltagemodeis
suchthatitfallsbelowthelowvoltagelimitasspeciedinIEC61010-1.
The isolation of the Current channel inputs is in line with the limit for safe voltage and
currents as mentioned above.
Current Channels Isolation IEC 61010-2-030:2017
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Fig. 12.26 Current channels isolation ratings
Current Channels Isolation
Input pin to chassis ± 60 V DC, 30 V RMS
Channel to channel 120 V DC, 50 V RMS
The input channels of the GN310B and GN311B are isolated. This means that the
inputchannelandamplierarefullyisolatedfrom(earth)ground.Inthiscontext,fully
isolated means a very high resistance and a very small capacitive coupling to ground.
This is for safety and to avoid ground loops.