ABB RELION 670 Series Installation Manual page 57

1MRK514024-UEN A
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 30: 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 40 mm 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.
Section 6
Connecting
IEC13000234-1-en.vsd
51