Grounding And It Line Power - Danfoss VLT HVACDrive Instruction Manual

4 Electrical Installation

4.1.5 Grounding and IT Line Power

The ground connection cable cross-section must be at least 0.016 in
according to
tions on cable cross-sections.
The line power is connected to the main disconnect switch if this is included.
4
NOTE!
Make sure that the AC line voltage corresponds to the AC line voltage of the adjustable frequency drive nameplate.
Figure 4.3: Terminals for line power and grounding.
IT Line Power
Do not connect 400 V adjustable frequency drives with RFI filters to line power supplies with a voltage between phase and ground of
more than 440 V.
For IT line power and delta ground (grounded leg), AC line voltage may exceed 440 V between phase and ground.
4-8
EN 50178 or IEC 61800-5-1
unless national regulations specify differently. Always comply with national and local regula-
MG.11.AB.22 - VLT
VLT ®
2 [10 mm 2 ]or 2 rated line power wires terminated separately
® is a registered Danfoss trademark
HVAC Drive Instruction Manual