Fuses - Danfoss VLT FC 102 Installation Manual

Electrical Installation

5.4 Fuses

5.4.1 Fuse Selection
To protect the drive system in case 1 or more internal
components break down within a drive module, use fuses
and/or circuit breakers at the mains supply side.
5.4.1.1 Branch Circuit Protection
To protect the installation against electrical and fire
5 5
hazards, protect all branch circuits in an installation against
short circuit and overcurrent according to national and
international regulations.
5.4.1.2 Short-circuit Protection
Danfoss recommends the fuses listed in
chapter 5.4.1.3 Recommended Fuses for CE Compliance and
chapter 5.4.1.4 Recommended Fuses for UL Compliance to
achieve CE or UL Compliance in the protection of service
personnel and property against the consequences of
component breakdown in the drive modules.
5.4.1.3 Recommended Fuses for CE
Compliance
Number of drive
modules
2
4
4
4
4
4
Table 5.1 6-Pulse Drive Systems (380–500 V AC)
Number of drive
modules
2
2
2
2
2
4
4
4
4
4
Table 5.2 12-Pulse Drive Systems (380–500 V AC)
22
®
VLT
FC 302 FC 102/ Recommended fuse
FC 202 (maximum)
N450 N500 aR-1600
N500 N560 aR-2000
N560 N630 aR-2000
N630 N710 aR-2500
N710 N800 aR-2500
N800 N1M0 aR-2500
FC 302 FC 102/ Recommended fuse
FC 202 (maximum)
N250 N315 aR-630
N315 N355 aR-630
N355 N400 aR-630
N400 N450 aR-800
N450 N500 aR-800
N500 N560 aR-900
N560 N630 aR-900
N630 N710 aR-1600
N710 N800 aR-1600
N800 N1M0 aR-1600
Danfoss A/S © 08/2017 All rights reserved.
Parallel Drive Modules
Number of drive
modules
4
4
4
4
4
Table 5.3 6-Pulse Drive Systems (525–690 V AC)
Number of drive
modules
2
2
2
2
2
2
4
4
4
4
4
Table 5.4 12-Pulse Drive Systems (525–690 V AC)
5.4.1.4 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 5.6
to Table 5.7 with the current rating of the Class L
or Class T fuses.
Number of drive
modules
2
4
4
4
4
4
Table 5.5 6-Pulse Drive Systems (380–500 V AC)
FC 302 FC 102/ Recommended fuse
FC 202 (maximum)
N630 N710 aR-1600
N710 N800 aR-2000
N800 N900 aR-2500
N900 N1M0 aR-2500
N1M0 N1M2 aR-2500
FC 302 FC 102/ Recommended fuse
FC 202 (maximum)
N250 N315 aR-550
N315 N355 aR-630
N355 N400 aR-630
N400 N500 aR-630
N500 N560 aR-630
N560 N630 aR-900
N630 N710 aR-900
N710 N800 aR-900
N800 N900 aR-900
N900 N1M0 aR-1600
N1M0 N1M2 aR-1600
FC 302 FC 102/ Recommended fuse
FC 202 (maximum)
N450 N500 1600 A
N500 N560 2000 A
N560 N630 2000 A
N630 N710 2500 A
N710 N800 2500 A
N800 N1M0 2500 A
MG37K302