Electrical Installation; How To Connect - Danfoss VLT AQUA Drive Operating Instructions Manual

®
VLT AQUA Drive
Operating Instructions

5. Electrical installation

5.1. How to connect

5.1.1. Cables General
NB!
Always comply with national and local regulations on cable cross-sections.
Details of terminal tightening torques.
Power (kW)
Enclosure 200-240 V
A2 0.25 - 3.0
A3 3.7
A5 0.25 - 3.7
B1 5.5 - 11
B2 15
B3 5.5 - 11
B4 11 - 18.5
C1 18.5 - 30
37
C2
45
C3 18.5 - 30
C4 30 - 45
Table 5.1: Tightening of terminals.
1. For different cable dimensions x/y where x≤95 mm
5.1.2. Fuses
Branch circuit protection:
In order to protect the installation against electrical and fire hazard, all branch circuits in an installation, switch gear, machines etc., must be shortcircuit
and overcurrent protected according to the national/international regulations.
Short circuit protection
The frequency converter must be protected against short-circuit to avoid electrical or fire hazard. Danfoss recommends using the fuses mentioned in
tables 4.3 and 4.4 to protect service personnel or other equipment in case of an internal failure in the unit. The frequency converter provides full short
circuit protection in case of a short-circuit on the motor output.
Over-current protection:
Provide overload protection to avoid fire hazard due to overheating of the cables in the installation. Over current protection must always be carried out
according to national regulations. The frequency converter is equipped with an internal over current protection that can be used for upstream overload
protection (UL-applications excluded). See par. 4-18. Fuses must be designed for protection in a circuit capable of supplying a maximum of 100,000
A (symmetrical), 500 V/600 V maximum.
rms
Non UL compliance
If UL/cUL is not to be complied with, Danfoss recommends using the fuses mentioned in table 4.2, which will ensure compliance with EN50178:
In case of malfunction, not following the recommendation may result in unnecessary damage to the frequency converter.
380-480 V 525-600 V Line
0.37 - 4.0 0.75 - 4.0 1.8
5.5 - 7.5 5.5 - 7.5 1.8
0.37 - 7.5 0.75 - 7.5 1.8
11 - 18.5 - 1.8
22 2.5
-
30 4.5
11 - 18.5 11 - 18.5 1.8
18.5 - 37 18.5 - 37 4.5
37 - 55 - 10
75 14
-
90 24
37 - 55 37 - 55 10
55 - 90 55 - 90
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2 and y≥95 mm 2 .
®
MG.20.M4.02 - VLT is a registered Danfoss trademark
Torque (Nm)
DC connec-
Motor
tion
1.8 1.8
1.8 1.8
1.8 1.8
1.8 1.5
2.5 3.7
4.5 3.7
1.8 1.8
4.5 4.5
10 10
14 14
24 14
10 10
1 1 14
14/24
5. Electrical installation
Brake Earth Relay
1.8 3 0.6
1.8 3 0.6
1.8 3 0.6
1.5 3 0.6
3.7 3 0.6
3.7 3 0.6
1.8 3 0.6
4.5 3 0.6
10 3 0.6
14 3 0.6
14 3 0.6
10 3 0.6
14 3 0.6
5
23