Hitachi 670 Series Installation Manual page 59

1MRK514026-UUS Rev. P
670 series
Installation manual
For RS485 only: at the IED end, always connect the shield to the IED with the shield
connection clamp, shown below.
GUID-682A59D0-950C-4D89-8318-984E0A8B2761 V1 EN-US
Figure 32: Shield connection clamp
The cable shield shall be properly connected to the IED chassis by the cable clamp with the
maximum open conductor length of 1.57" between clamp and terminals. If double shielded
cable is used, the inner cable shielding should be connected at the external equipment end
only. At the IED terminal end, the inner shield should be isolated.
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Section 6
Connecting
IEC13000234-1-en.vsd
53