Fuses - Danfoss VLT AutomationDrive FC 300 Design Manual

FC 300 Design Guide
Illustration 6.5: Cable entry holes for enclosure
B1. The suggested use of the holes are purely rec-
ommendations and other solutions are possible.
Illustration 6.6: Cable entry holes for enclosure
B2. The suggested use of the holes are purely rec-
ommendations and other solutions are possible.
Term.
no.
1)
Protected Earth Connection

6.3.4. Fuses

Branch circuit protection:
In order to protect the installation against electrical and fire hazard, all branch circuits in an in-
stallation, switch gear, machines etc., must be short-circuited and overcurrent protected according
to 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 below to protect service personnel and equip-
96 97 98 99
U V W 1)
PE
U1 V1 W1
PE 1)
W2 U2 V2
U1 V1 W1 1)
PE
MG.33.B9.02 - VLT ® is a registered Danfoss trademark
Illustration 6.7: Cable entry holes for enclosure
C1. The suggested use of the holes are purely rec-
ommendations and other solutions are possible.
Illustration 6.8: Cable entry holes for enclosure
C2. The suggested use of the holes are purely rec-
ommendations and other solutions are possible.
Motor voltage 0-100% of mains voltage.
3 wires out of motor
Delta-connected
6 wires out of motor
Star-connected U2, V2, W2
U2, V2 and W2 to be interconnected separately.
NB!
When using motors without
phase insulation paper or other
insulation reinforcement suita-
ble for operation with voltage
supplied from frequency con-
verters, fit aSine-wave filter on
the output of the FC 300.
6. How to Install
6
105