Electrical Installation; Cables General; Details Of Terminal Tightening Torques.; Fuses - Danfoss vlt FC 102 Operating Instructions Manual

®
VLT HVAC Drive Operating Instructions

4. Electrical installation

4.1. How to connect

4.1.1. Cables General

NB!
For the VLT High Power series mains and motor connections, please see VLT HVAC Drive High Power Operating Instructions, MG.
11.F1.02.
NB!
Cables General
Always comply with national and local regulations on cable cross-sections.

Details of terminal tightening torques.

Enclo- 200-240
sure V
A2 1.1 - 3.0
A3 3.7
A5 1.1 - 3.7
B1 5.5 - 11
-
B2
15
B3 5.5 - 11
B4 11 - 18.5
C1 18.5 - 30
C2 37 - 45
C3 18.5 - 30
C4 30 - 45
D1/D3 -
D2/D4 -
E1/E2 -
Table 4.1: Tightening of terminals
1) For different cable dimensions x/y, where x ≤ 95 mm² and y ≥ 95 mm²
2) Cable dimensions above 18.5 kW ≥ 35 mm

4.1.2. 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.
Power (kW)
380-480 525-600
Line
V V
1.1 - 4.0 1.1 - 4.0 1.8
5.5 - 7.5 5.5 - 7.5 1.8
1.1 - 7.5 1.1 - 7.5 1.8
11 - 18.5 - 1.8
22 - 4.5
30 - 4.5
11 - 18.5 11 - 18.5 1.8
18.5 - 37 18.5 - 37 4.5
37 - 55 - 10
-
75 - 90 14/24
-
37 - 55 37 - 55 10
55 - 90 55 - 90 14/24
110 - 132 110 - 132 19
160-250 160-315 19
315-450 355-560 19
2 and below 22 kW ≤ 10 mm
MG.11.A6.02 - 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
4.5 3.7
2) 4.5 2) 3.7
1.8 1.8
4.5 4.5
10 10
1) 14/24 1) 14
10 10
1) 14/24 1) 14
19 9.6
19 9.6
19 19
2
4. 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
10 3 0.6
14 3 0.6
9.6 19 0.6
9.6 19 0.6
9.6 19 0.6
4
19