Danfoss VLT 380-500 V, Design Manual

Page: 90 / 170

8.4.1.4 Recommended Fuses for UL Compliance
•
The drive modules are supplied with built-in AC fuses. The modules have been qualified for 100 kA short-circuit
current rating (SCCR) for the standard busbar configurations at all voltages (380–690 V AC).
•
If no power options or extra busbars are connected externally, the drive system is qualified for 100 kA SCCR with
any Class L or Class T UL-listed fuses connected at the input terminals of the drive modules.
•
Do not exceed the listed fuse rating in Table 8.8 to Table 8.9 with the current rating of the Class L or Class T fuses.
Number of drive
modules
FC 302 FC 102/
FC 202
Recommended fuse
(maximum)
2 N450 N500 1600 A
4 N500 N560 2000 A
4 N560 N630 2000 A
4 N630 N710 2500 A
4 N710 N800 2500 A
4 N800 N1M0 2500 A
Table 8.7 6-Pulse Drive Systems (380–500 V AC)
Number of drive
modules
FC 302 FC 102/
FC 202
Recommended fuse
(maximum)
2 N250 N315 630 A
2 N315 N355 630 A
2 N355 N400 630 A
2 N400 N450 800 A
2 N450 N500 800 A
4 N500 N560 900 A
4 N560 N630 900 A
4 N630 N710 1600 A
4 N710 N800 1600 A
4 N800 N1M0 1600 A
Table 8.8 12-Pulse Drive Systems (380–500 V AC)
Any minimum 500 V UL-listed fuse can be used for the 380–500 V AC
drive systems.
Number of drive
modules
FC 302 FC 102/
FC 202
Recommended fuse
(maximum)
4 N630 N710 1600 A
4 N710 N800 2000 A
4 N800 N900 2500 A
4 N900 N1M0 2500 A
4 N1M0 N1M2 2500 A
Table 8.9 6-Pulse Drive Systems (525–690 V AC)
Number of drive
modules
FC 302 FC 102/
FC 202
Recommended fuse
(maximum)
2 N250 N315 550 A
2 N315 N355 630 A
2 N355 N400 630 A
2 N400 N500 630 A
2 N500 N560 630 A
2 N560 N630 900 A
4 N630 N710 900 A
4 N710 N800 900 A
4 N800 N900 900 A
4 N900 N1M0 1600 A
4 N1M0 N1M2 1600 A
Table 8.10 12-Pulse Drive Systems (525–690 V AC)
Any minimum 700 V UL-listed fuse can be used for the 525–690 V AC
drive systems.
Considerations During Insta...
VLT
®
Parallel Drive Modules
88 Danfoss A/S © 6/2016 All rights reserved. MG37N102
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