Installation Instructions

Chapter 4 - Power Cabling
Installation in Corner-Grounded Network
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Siemens Industry, Inc.
Smart Infrastructure
Siemens BT300 HVAC Drive
Installation Instructions
DPD01148
2019-05-29
Figure 36: Connecting the Protective Conductor.
Installation in Corner-Grounded Network
Corner grounding is allowed for the drive types FS7 to FS9 with a rating from 72A
to 310A at 380 to 480V supply and from 75A to 310A at 208 to 240V supply.
In these circumstances the EMC protection class must be changed to level C4
following the instructions in Chapter 6, Installation in an IT System section of this
manual.
Corner grounding is not allowed for the drive types FS4 to FS6 with a rating from
3.4A to 61A at 380 to 480V supply and 3.7A to 62A with 208 to 240V supply.