Fuses - Danfoss CDS803 Quick Manual

Quick Guide
1 1
Figure 1.7 Tighten support bracket on line power wires

1.3.7 Fuses

Branch circuit protection
To protect the installation against electrical and fire hazard, all branch circuits in an installation, switch gear, machines, etc.,
must be short-circuit and overcurrent protected according to national and local regulations.
Short circuit protection
Danfoss recommends using the fuses listed in Table 1.9 to protect service personnel or equipment in case of an internal
failure in the unit or short circuit on the DC link. The adjustable frequency drive provides full short circuit protection in case
of a short circuit on the compressor.
Overcurrent protection
Provide overload protection to avoid overheating of the cables in the installation. Overcurrent protection must always be
carried out according to local and national regulations. Circuit breakers and fuses must be designed for protection in a
circuit capable of supplying a maximum of 100,000 A
UL/Non-UL compliance
Use the fuses listed in Table 1.9 to ensure compliance with UL or IEC 61800-5-1.
NOTICE!
In the event of malfunction, failure to follow the protection recommendation may result in damage to the adjustable
frequency drive.
CDS 803
3x200–240 V IP20
4 TR/VZH028
5 TR/VZH035
6.5 TR/VZH044
3x380–480 V IP20
4 TR/VZH028
5 TR/VZH035
6.5 TR/VZH044
Table 1.9 Fuses
8
Quick Guide
(symmetrical), 480 V maximum.
rms
Bussmann Bussmann
Type RK5 Type RK1
FRS-R-50 KTN-R50
FRS-R-50 KTN-R50
FRS-R-80 KTN-R80
FRS-R-25 KTS-R25
FRS-R-25 KTS-R25
FRS-R-50 KTS-R50
Danfoss A/S © Rev. 08/2014 All rights reserved.
Fuse
UL
Bussmann Bussmann
Type J Type T
JKS-50 JJN-50
JKS-50 JJN-50
JKS-80 JJN-80
JKS-25 JJS-25
JKS-25 JJS-25
JKS-50 JJS-50
Non-UL
Max fuse
Type G
50
50
65
25
25
50
MG18M122