REXROTH IndraDrive C - IT System; TT System

10-2 Requirements to the Mains Connection Rexroth IndraDrive
DOK-INDRV*-SYSTEM*****-PR02-EN-P
IT System
Tr
L1
L2
L3
R
E
1
2
I
T
I = isolation of all active parts from ground or connection of one point to ground
via an impedance
T = exposed conductive parts directly grounded, independent of grounding of
current source (station ground)
Fig. 10-3: IT mains system
Compliance with EMC requirements in this case is only possible under
restricted conditions. Can therefore only be used for industrial area with
its own mains.
TT System
Tr
L1
L2
L3
N
T
T
U
W
V
T = direct grounding of a point (station ground)
T = exposed conductive parts directly grounded, independent of grounding of
current source (station ground)
Fig. 10-4: TT mains system
Compliance with EMC requirements in this case is only possible under
restricted conditions. Can therefore only be used for industrial area with
its own mains.