Connection; Manually Unlocking Power-Unit Doors; Connecting Ground; Table 6-2 Cable Cross-Sections - Siemens 6SL3845-2NN41-8AD2 Operating Instructions Manual

Medium-voltage drive

Table of Contents

Table 6-2

Object

Power cable

Cabinet protective conductor

Connection

6.5.1

To ensure operator protection, the drive is equipped with an electromechanical door

interlocking system. The doors cannot be opened until the make-proof grounding switch has

been closed. In the event of a complete voltage failure including failure of the auxiliary voltage,

the doors cannot be released via the grounding switch.

Because the drive is not yet connected, the doors are locked electromechanically. In order to

facilitate assembly and installation of the drive, the doors can be opened manually.

Danger to life as a result of insufficient grounding

The drive must be grounded to ensure that it operates safely and reliably. If the drive is

operated with insufficient grounding, then the protection and monitoring functions can fail.

Death, serious injury, or material damage will result.

● To ensure the correct functioning of the protection and monitoring equipment, ground the

Each cabinet has a grounding lug for grounding the components installed in the cabinet. It is

located at the bottom of the cabinet. Connect the cabinets securely to the plant grounding

system via these grounding lugs.

SINAMICS SM150 6SL3845-2NN41-8AD2

Operating Instructions Rev.201910281310 EXAMPLE

Cable cross-sections

DANGER

device.

Cross-section

Max. 240 mm

Max. 120 mm²

Electrical connection

Comments

Max. six parallel power cables

6.5 Connection

Table of Contents

Sinamics sm150