11/03 Electrical Installation
SINAMICS G150
Operating Manual
4-5
Item Activity Fulfilled/Complete
22 Option L87
Insulation
monitoring
The insulation monitor can only be operated with the
insulated-neutral system. Only one insulation monitor
may be used in one electrically connected network. For
system-side control, the signaling relays must be
connected accordingly or, with individual drives (the
cabinet unit is fed via a converter transformer assigned
to the cabinet unit), integrated in the cabinet unit warning
train (see 4.9.13).
Point 7 must also be taken into account: Before the
cabinet is operated from an ungrounded supply/IT
supply, the connection bracket for the interference-
suppression capacitor must be removed (see 4.6.5).
Required Tools
To install the connections, you will require:
• Spanner or socket spanner (w/f 10)
• Spanner or socket spanner (w/f 13)
• Spanner or socket spanner (w/f 18/19)
• Hexagon-socket spanner (size 8)
• Torque spanner, max. 50 Nm
• Screwdriver, size 2
• Screwdriver Torx T20
• Screwdriver Torx T30
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