Danfoss VLT Micro FC 51 Kurzanleitung Seite 4

1. Quick Guide
1.1.13. Fuses
1
Branch circuit protection:
In order to protect the installation against electrical and fire hazard, all branch circuits in an installation, switch gear, machines etc., must be short-circuited
and overcurrent protected according to national/international regulations.
Short circuit protection:
Danfoss recommends using the fuses mentioned in the following tables to protect service personnel or other equipment in case of an internal failure in
the unit or short-circuit on DC-link. The frequency converter provides full short circuit protection in case of a short-circuit on the motor or brake output.
a circuit capable of supplying a maximum of 100,000 A
Overcurrent protection:
Provide overload protection to avoid overheating of the cables in the installation. Overcurrent protection must always be carried out according to national
regulations. Fuses must be designed for protection in a circuit capable of supplying a maximum of 100,000 A
NonUL compliance:
If UL/cUL is not to be complied with, Danfoss recommends using the fuses mentioned in the below table, which will ensure compliance with EN50178/
IEC61800-5-1:
In case of malfunction, not following the fuse recommendation may result in damage to the frequency converter.
FC 51
Bussmann
1 X 200-240 V
kW Type RK1
0K18 - 0K37 KTN-R15
0K75 KTN-R25
1K5 KTN-R35
2K2 KTN-R45
3 x 200-240 V
0K25 KTN-R10
0K37 KTN-R15
0K75 KTN-R20
1K5 KTN-R25
2K2 KTN-R40
3K7 KTN-R40
3 x 380-480 V
0K37 - 0K75 KTS-R10
1K5 KTS-R15
2K2 KTS-R20
3K0 KTS-R40
4K0 KTS-R40
5K5 KTS-R40
7K5 KTS-R40
Table 1.3: Fuses
1.1.14. Connecting to Mains and Motor
The frequency converter is designed to operate all standard three-phased asynchronous motors.
The frequency converter is designed to accept mains/motor cables with a maximum cross-section of 4 mm
• Use a shielded/armored motor cable to comply with EMC emission specifications, and connect this cable to both the decoupling plate and the
motor metal.
• Keep motor cable as short as possible to reduce the noise level and leakage currents.
4
(symmetrical), 480 V maximum.
rms
UL
Bussmann Bussmann Littel fuse
Type J Type T
JKS-15 JJN-15
JKS-25 JJN-25
JKS-35 JJN-35
JKS-45 JJN-45
JKS-10 JJN-10
JKS-15 JJN-15
JKS-20 JJN-20
JKS-25 JJN-25
JKS-40 JJN-40
JKS-40 JJN-40
JKS-10 JJS-10
JKS-15 JJS-15
JKS-20 JJS-20
JKS-40 JJS-40
JKS-40 JJS-40
JKS-40 JJS-40
JKS-40 JJS-40
MG.02.B4.83 - VLT
rms
Ferraz-
Shawmut
Type RK1 Type CC
KLN-R15 ATM-R15
KLN-R25 ATM-R25
KLN-R35 -
KLN-R45 -
KLN-R10 ATM-R10
KLN-R15 ATM-R15
KLN-R20 ATM-R20
KLN-R25 ATM-R25
KLN-R40 ATM-R40
KLN-R40 -
KLS-R10 ATM-R10
KLS-R15 ATM-R15
KLS-R20 ATM-R20
KLS-R40 ATM-R40
KLS-R40 ATM-R40
KLS-R40 -
KLS-R40 -
2 (10 AWG).
®
is a registered Danfoss trademark
Quick Guide for VLT Micro FC 51
(symmetrical), 480 V maximum.
Ferraz- Max. fuses non UL
Shawmut
Type RK1 Type gG
A2K-15R 15A
A2K-25R 25A
A2K-35R 35A
A2K-45R 45A
A2K-10R 10A
A2K-15R 15A
A2K-20R 20A
A2K-25R 25A
A2K-40R 40A
A2K-40R 40A
A6K-10R 10A
A2K-15R 15A
A6K-20R 20A
A6K405R 40A
A6K-40R 40A
A6K-40R 40A
A6K-40R 40A