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
Torque [Nm(in-lb)]
Enclosure
IP class
Line
Compressor
connection
DC connection
Control
terminals
Ground
Relay
H3
IP20
1.4 (12.4)
0.8 (7.1)
0.8 (7.1)
0.5 (4.4)
0.8 (7.1)
0.5 (4.4)
H4
IP20
1.2 (10.6)
1.2 (10.6)
1.2 (10.6)
0.5 (4.4)
0.8 (7.1)
0.5 (4.4)
H5
IP20
1.2 (10.6)
1.2 (10.6)
1.2 (10.6)
0.5 (4.4)
0.8 (7.1)
0.5 (4.4)
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
®
Compressor Drive CDS 803
Decoupling Plate Installation Instructions
.
•
Also see
chapter 5.2.5 EMC Compliant Electrical
Connecting to mains and compressor
1.
Mount the ground wires to ground terminal.
2.
Connect compressor to terminals U, V, and W, see
U
T1
V
T2
W
T3
Table 5.5 Connection of Compressor to Terminals
3.
Mount mains supply to terminals L1, L2, and L3
and tighten.
130BB634.10
1
2
2
3
4
Motor
U V W
-DC+DC
MAINS
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
How to Install
VLT
®
Compressor Drive CDS 803
32
Danfoss A/S © 12/2015 All rights reserved.
MG18N202
5
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