Danfoss VLT AutomationDrive FC 300 Design Manual page 88

How to Order
525-690 V AC
FC 302 [T7]
N55K
N75K
N90K
N110
N132
N160
N200
N250
N315
5 5
P355
P400
P500
P560
P630
P710
P800
P900
P1M0
P1M2
P1M4
Table 5.10 Brake Chopper Data 525-690 V
R =Minimum brake resistance that can be used with this frequency converter . If the frequency converter includes multiple brake choppers, the
min
resistance value is the sum of all resisters in parallel.
R
=Nominal resistance required to achieve 150% braking torque.
br, nom
R =Resistance value of the recommended Danfoss brake resistor.
rec
1) Larger frequency converters include multiple inverter modules with a brake chopper in each inverter. Equal resistors should be connected to
each brake chopper.
86
®
VLT AutomationDrive FC 300 Design Guide 90-1200 kW
Pm (HO) [kW] Number of brake choppers
55
75
90
110
132
160
200
250
315
355
400
500
560
630
710
800
900
1000
1200
1400
MG34S202 - Rev. 2013-08-19
(1)
Rmin
1 13.5
1 8.8
1 8.2
1 6.6
1 4.2
1 4.2
1 3.4
1 2.3
1 2.3
1 2.3
1 2.1
1 2.0
1 2.0
2 1.3
2 1.1
2 1.1
3 1.0
3 0.8
3 0.7
4 0.55
Rbr, nom
11.0
9.4
7.5
6.2
5.2
4.2
3.3
2.8
2.4
2.4
2.1
2.0
2.0
1.3
1.2
1.1
1.0
0.84
0.70
0.60