Electrical Installation In General; Connecting To Mains And Compressor - Danfoss VLT Compressor Drive CDS 803 Design Manual

How to Install

5.2.2 Electrical Installation in General

All cabling must comply with national and local regulations on cable cross-sections and ambient temperature. Copper
conductors required, (75 °C/167 °F) recommended.
Enclosure
Enclosure
H3
H4
H5
5 5
Table 5.4 Enclosure H3–H5

5.2.3 Connecting to Mains and Compressor

The frequency converter is designed to operate Danfoss
VZH Compressors. For maximum cross-section on wires, see
chapter 8.2 General Specifications.
•
To comply with EMC emission specifications, use
a shielded/armored compressor cable and
connect this cable to both the decoupling plate
and the compressor metal.
•
Keep compressor cable as short as possible to
reduce the noise level and leakage currents.
•
For further details on mounting of the decoupling
plate, see VLT
Decoupling Plate Installation Instructions.
•
Also see chapter 5.2.5 EMC Compliant Electrical
Installation.
Connecting to mains and compressor
1. Mount the ground wires to ground terminal.
2. Connect compressor to terminals U, V, and W, see
Table 5.5.
Table 5.5 Connection of Compressor to Terminals
3. Mount mains supply to terminals L1, L2, and L3
and tighten.
32
IP class Line
IP20 1.4 (12.4)
IP20 1.2 (10.6)
IP20 1.2 (10.6)
®
Compressor Drive CDS 803
U
V
W
Danfoss A/S © 12/2015 All rights reserved.
®
VLT Compressor Drive CDS 803
Torque [Nm(in-lb)]
Compressor DC connection
connection
0.8 (7.1) 0.8 (7.1)
1.2 (10.6) 1.2 (10.6)
1.2 (10.6) 1.2 (10.6)
2
2
3
T1
T2
T3
1 Line
2 Ground
3 Compressor
4 Relays
Illustration 5.2 H3–H5 Enclosure
IP20 200–240 V 4–6.5 tons
IP20 380–480 V 4–6.5 tons
Control Ground
terminals
0.5 (4.4) 0.8 (7.1)
0.5 (4.4) 0.8 (7.1)
0.5 (4.4) 0.8 (7.1)
1
U
V W
-DC +DC
Relay
0.5 (4.4)
0.5 (4.4)
0.5 (4.4)
4
MG18N202