Electrical Installation; How To Connect; Electrical Installation In General - Danfoss VLT Micro Drive FC 51 Series Operating Instructions Manual

®
VLT Micro Drive FC 51 Operating Instructions

3 Electrical Installation

3.1 How to Connect

3.1.1 Electrical Installation in General

NB!
All cabling must comply with national and local regulations on cable cross-sections and ambient temperature. Copper conductors
required, (60-75° C) recommended.
Details of terminal tightening torques.
Power (kW)
1 x 200-240 3 x 200-240
Frame
V
M1 0.18 - 0.75 0.25 - 0.75
M2 1.5
M3 2.2 2.2 - 3.7
1)
Spade connectors (6.3 mm Faston plugs)
Table 3.1: Tightening of terminals.
3.1.2 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 short-circuited
and overcurrent protected according to national/international regulations.
Short circuit protection:
Danfoss recommends using the fuses mentioned in the following tables to protect service personnel or other equipment in case of an internal failure in
the unit or short-circuit on DC-link. The frequency converter provides full short circuit protection in case of a short-circuit on the motor or brake output.
a circuit capable of supplying a maximum of 100,000 A
Overcurrent protection:
Provide overload protection to avoid overheating of the cables in the installation. Overcurrent protection must always be carried out according to national
regulations. Fuses must be designed for protection in a circuit capable of supplying a maximum of 100,000 A
Non UL compliance:
If UL/cUL is not to be complied with, Danfoss recommends using the fuses mentioned in the below table, which will ensure compliance with EN50178/
IEC61800-5-1:
In case of malfunction, not following the fuse recommendation may result in damage to the frequency converter.
3 x 380-480
Line
V V
0.37 - 0.75 1.4
1.5 1.5 - 2.2 1.4
3.0 - 7.5 1.4
(symmetrical), 480 V maximum.
rms
®
MG.02.A4.02 - VLT is a registered Danfoss trademark
Torque (Nm)
DC connec- Control Ter-
Motor
tion/Brake 1) minals
0.7 - 0.15
0.7 - 0.15
0.7 - 0.15
(symmetrical), 480 V maximum.
rms
3 Electrical Installation
3
Earth Relay
3 0.5
3 0.5
3 0.5
11