2024-03
24
ARS*-B2-IA*
Installation
Connecting the Ground Connection Cable
1.
Connect the ground cable to a cable lug.
2.
Position the cable lug over the grounding terminal with the cable pointing downwards.
3.
Screw the cable lug to the grounding terminal with 3 flat washers and 1 spring washer inserted
between screw, lug, and terminal as illustrated:
Figure 3.12 Connecting the ground connection cable
4.
Tighten the screw with a torque of 1.5 Nm.
The cable lug is properly attached and cannot come loose.
Cable Shield Grounding of the Spur Cables
Each spur cable shield (S) is capacitively coupled with the grounding terminal (PA). The cable
shields at the field devices must be connected to local earth.
Observe that the continuity of the cable shield to the spur shield terminal (S) is maintained, if
following situations apply:
• If the cable shield at the rail field switch requires direct earthing of the shield through, e.g.,
an earth bar
• If surge protectors are used to protect the rail field switch against high voltages caused,
e.g., by indirect lightning strikes
1 Phillips-head screw M4 x 16 mm
2 Flat washer M4
3 Spring washer
4 Cable lug
5 Flat washer M4
6 Flat washer M4