10.3.3 UL Compliance
380-500 V: The fuses below are suitable for use on a circuit
capable of delivering 100,000 Arms (symmetrical), With the
proper fusing, the drive Short Circuit Current Rating (SCCR)
is 100,000 Arms.
Power
Size
Fuse Options
Bussman
PN
Littelfuse PN
Littelfuse
PN
Bussmann
PN
Siba PN
Ferraz-Shawmut
PN
Ferraz-Shawmut PN
(Europe)
Ferraz-Shawmut PN
(North America)
N110
170M2619 LA50QS300-4 L50S-300
FWH-300A
20 610
31.315
A50QS300-4
6,9URD31D08A0315
A070URD31KI0315
N132
170M2620 LA50QS350-4 L50S-350
FWH-350A
20 610
31.350
A50QS350-4
6,9URD31D08A0350
A070URD31KI0350
N160
170M2621 LA50QS400-4 L50S-400
FWH-400A
20 610
31.400
A50QS400-4
6,9URD31D08A0400
A070URD31KI0400
N200
170M4015 LA50QS500-4 L50S-500
FWH-500A
20 610
31.550
A50QS500-4
6,9URD31D08A0550
A070URD31KI0550
N250
170M4016 LA50QS600-4 L50S-600
FWH-600A
20 610
31.630
A50QS600-4
6,9URD31D08A0630
A070URD31KI0630
N315
170M4017 LA50QS800-4 L50S-800
FWH-800A
20 610
31.800
A50QS800-4
6,9URD32D08A0800
A070URD31KI0800
Table 10.3 Alternative Fuse Options
10.3.4 Connection Tightening Torques
When tightening all electrical connections it is very
important to tighten with the correct torque. Too low or
too high torque results in a bad electrical connection. Use
a torque wrench to ensure correct torque. Always use a
torque wrench to tighten the bolts.
Frame Size
Terminal
Torque
Bolt size
D1h/D3h
Mains
Motor
Load sharing
Regen
19-40 Nm
(168-354 in-
lbs)
M10
Earth (Ground)
Brake
8.5-20.5 Nm
(75-181 in-lbs)
M8
D2h/D4h
Mains
Motor
Regen
Load sharing
Earth (ground)
19-40 Nm
(168-354 in-
lbs)
M10
Brake
8.5-20.5 Nm
(75-181 in-lbs)
M8
Table 10.4 Torque for terminals
Specifications
VLT® Automation VT Drive FC 322 D-Frame Instruction Manual
10-8
MG21E122 - VLT® is a registered Danfoss trademark
10
0
Remote Site Products - 1-888-532-2706 - www.remotesiteproducts.com
http://www.remotesiteproducts.com/p-20776-Danfoss-131X8139-VLT-Automation-VT-Drive-VFD-FC322-230V-20-HP.aspx