Line Power Wiring Overview - Danfoss VLT HVAC Drive Instruction Manual

4. Electrical installation
4.1.3. Grounding and IT line power
The power supply is connected to the main disconnect switch if this is included.
4

4.1.4. Line power wiring overview

Please refer to the following table for the line power wiring connection instructions.
Enclo-
sure:
Motor
size:
200-240 V
380-480 V
525-600 V
Goto:
Table 4.5: Line power wiring table.
30
The ground connection cable cross-section must be at least 0.016 in.
2 rated line power wires terminated separately according to
61800-5-1
, unless national regulations specify otherwise. Always comply with na-
tional and local regulations on cable cross-sections.
NOTE
Make sure that the line voltage corresponds to the line voltage of the adjustable
frequency drive nameplate.
IT Line
Do not connect 400 V adjustable
frequency drives with RFI filters
to line supplies with a voltage
between phase and ground of
more than 440 V.
For IT lines and delta ground
(grounded leg), line voltage
may exceed 440 V between
phase and ground.
A2 A3
(IP 20/IP (IP 20/IP (IP 55/IP
21) 21) 66)
1.1-3.0 3.7 1.1-3.7
kW kW kW
1.1-4.0 5.5-7.5 1.1-7.5
kW kW kW
2.2-4.0 5.5-7.5
kW kW
4.1.5 4.1.6
MG.11.A4.22 - VLT
VLT
Illustration 4.1: Terminals for line supply and
grounding.
A5 B1 B2
(IP 21/IP (IP 21/IP
55/IP 66) 55/IP 66)
5.5-11 15
kW kW
11-18.5 22-30
kW kW
4.1.7
® is a registered Danfoss trademark
® HVAC Drive Instruction Manual
2 2
[10 mm ] or
EN 50178 IEC
or
C1 C2
(IP 21/IP (IP 21/IP
55/66) 55/66)
18.5-30 37-45
kW kW
37-55 75-90
kW kW
4.1.8