Installing Upstream Fuses; Upstream Fuse Considerations; Recommended Fuse Ratings For Iec Installation - Danfoss VLT AQUA Drive FC 202 Operating Manual

Operating Guide | VLT® AQUA Drive FC 202

5.9 Installing Upstream Fuses

5.9.1 Upstream Fuse Considerations

Factory fuse options like a fusible disconnector or MCCB protect the busbars and circuits within the drive. To protect the cables, an
installer should use separate F1 fuses for upstream protection.
• Danfoss recommends the fuse type gG (IEC 60269-1) for the mains fuses. Use only fuses with a sufficient voltage rating according
to the mains voltage. Do not use larger fuses than what is recommended. These fuses are selected for short-circuit protection only.
• Operation time of the fuse must be less than 0.4 s. The operation time must also agree with the fuse type and the impedance of the
supply circuit.
• The recommended mains cable and fuse sizes are valid up to a cable length of 100 m, with mains having a short-circuit current of
20 kA. Recommended cable sizes are shown in the Electrical Data section.
• Danfoss recommends the use of FC1 fuses to meet short-circuit protection for any enclosed drives supplied with only the non-
fusible disconnect, a non-fusible disconnect and contactor, or a contactor only option.

5.9.2 Recommended Fuse Ratings for IEC Installation

Table 44: Recommended Fuse Ratings for IEC Installation, 380–480 V
Drive model Fuse P/N
N110K Mersen NH1GG50V250
N132 Mersen NH2GG50V315
N160 Mersen NH2GG50V355
N200 Mersen NH3GG50V425
N250 Mersen NH3AGG50V630
N315 Mersen NH3AGG50V630
N355 Mersen NH4GG50V800
N400 Mersen NH4GG50V1000
N450 Mersen NH4GG50V1000
N500 Mersen NH4GG50V1000
N560 Mersen NH4GG50V1250
Table 45: Recommended Fuse Ratings for IEC Installation, 525–690 V
Drive model Fuse P/N
N110 Mersen NH2GG69V250
N132 Mersen NH2GG69V250
N160K Mersen NH2GG69V250
N200 Mersen NH2GG69V315
92 | Danfoss A/S © 2018.10
Fuse size Rated cur-
rent [A]
1 250
2 315
2 355
3 425
3 630
3 630
4 800
4 1000
4 1000
4 1000
4 1250
Fuse size Rated cur-
rent [A]
2 250
2 250
2 250
2 315
Minimum Maximum
SCCR [kA] fuse rating F1
[A]
6.8 250
7 315
8.5 355
10 425
13 630
13 630
18 800
25 1000
25 1000
25 1000
33 1250
Minimum Maximum
SCCR [kA] fuse rating F1
[A]
6.5 250
6.5 250
6.5 250
7.5 315
AQ262141056213en-000101 / 130R0882
Electrical Installation
Minimum Type F1
voltage rat-
ing [V]
500 gG/gL
500 gG/gL
500 gG/gL
500 gG/gL
500 gG/gL
500 gG/gL
500 gG/gL
500 gG/gL
500 gG/gL
500 gG/gL
500 gG/gL
Minimum Type F1
voltage rat-
ing [V]
690 gG/gL
690 gG/gL
690 gG/gL
690 gG/gL