12.9.2 Brake Chopper Ratings for Mains Voltage 208–240 V
Table 58: Brake Chopper Ratings for VACON
®
NXS/NXSP AC Drives, Mains Voltage 208–240 V, 50/60 Hz, 3~
Enclosure size
Drive type
The minimum brake resistance [Ω]
Brake power @405 V DC [kW]
(1)
FR4
0003
30
0.55
0004
30
0.75
0007
30
1.1
0008
30
1.5
0011
30
2.2
0012
30
3.0
FR5
0017
30
4.0
0025
30
5.5
0031
20
7.5
FR6
0048
10
11.0
0061
10
15.0
FR7
0075
3.3
22.0
0088
3.3
22.0
0114
3.3
30.0
FR8
0140
1.4
37.0
0170
1.4
45.0
0205
1.4
55.0
FR9
0261
1.4
75.0
0300
1.4
90.0
1
When using recommended resistor types. Peak power capability of the brake chopper can be calculated with DC-link voltage (Udc) and brake resistor resistance Rb by Udc
2
/Rb.
Specifications
Operating Guide | VACON® NXS/NXP Air-cooled
AQ275638903263en-000301 / DPD00910| 195
Danfoss A/S © 2020.02