3.2.4.4 UL/Non-UL Compliance
To ensure compliance with UL or IEC 61800-5-1, use the circuit breakers or fuses listed in this chapter. Circuit breakers must be
designed for protection in a circuit capable of supplying a maximum of 10000 A
rms
(symmetrical), 480 V maximum.
3.2.4.5 Recommendation of Fuses
NOTICE
If malfunction occurs, failure to follow the protection recommendation may result in damage to the drive.
Table 11: Fuses
Fuse
UL Non-UL
Bussmann Bussmann Bussmann Bussmann Maximum fuse
Power [kW (hp)] Type RK5 Type RK1 Type J Type T Type G
3x200–240 V IP20
6.0 (8.0) FRS-R-50 KTN-R50 JKS-50 JJN-50 50
7.5 (10) FRS-R-50 KTN-R50 JKS-50 JJN-50 50
10 (15) FRS-R-80 KTN-R80 JKS-80 JJN-80 65
3x380–480 V IP20
6.0 (8.0) FRS-R-25 KTS-R25 JKS-25 JJS-25 25
7.5 (10) FRS-R-25 KTS-R25 JKS-25 JJS-25 25
10 (15) FRS-R-50 KTS-R50 JKS-50 JJS-50 50
18.5 (25) FRS-R-80 KTS-R80 JKS-80 JJS-80 63
22 (30) FRS-R-80 KTS-R80 JKS-80 JJS-80 63
30 (40) FRS-R-125 KTS-R125 JKS-R125 JJS-R125 80
3.2.5 EMC-correct Electrical Installation
General points to be observed to ensure EMC-correct electrical installation:
• Use only shielded/armored motor cables and shielded/armored control cables.
• Ground the shield at both ends.
• Avoid installation with twisted shield ends (pigtails), because it reduces the shielding effect at high frequencies. Use the cable
clamps provided.
• Ensure the same potential between the drive and the ground potential of PLC.
• Use star washers and galvanically conductive installation plates.
Installation
Operating Guide | VLT® Compressor Drive CDS 803
AQ321748767627en-000101 / 130R0570| 19
Danfoss A/S © 2019.12
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