ABB RELION 670 Series Installation Manual page 62

Section 6
Connecting
56
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.
1MRK 514 026-UEN B
IEC13000234-1-en.vsd
670 series 2.2 IEC
Installation manual