Fuses
13 kW/3 t unit 176L0767 RLA 22A
max. fuse amperage 30 A
16 kW/4 t unit 176L0766 RLA 28A
max. fuse amperage 35 A
20 kW/5 t unit 176L0765 RLA 33A
max. fuse amperage 40 A
Table 3.4 Fuses
NOTE
Fuses of type class RK5 must be used in US installations.
Recommended circuit breakers
HVCR type fusible circuit breaker may be used, see rating
above.
3.5 EMC Correct Installation
Follow these guidelines when compliance with EN 55011
cl. A or EN 55014 is required.
Good engineering practice to ensure EMC-correct electrical
installation:
•
Use only shielded/braided screened/armored
motor cables and control cables. The shield
should provide a minimum coverage of 80%. The
shield material must be metal, not limited to but
typically copper, aluminum, steel or lead. There
are no special requirements for the mains cable.
•
Connect the shield to ground at both ends for
motor cables and control cables.
•
Avoid terminating the shield with twisted ends
(pigtails). Such a termination increases the high
frequency impedance of the screen, which
reduces its effectiveness at high frequencies. Use
low impedance cable clamps (delivered with the
drive) and EMC glands instead.
•
Ensure good electrical contact between the de-
coupling plate and the metal chassis of the
variable speed drive.
•
Where possible, avoid using unshielded/
unarmored motor or control cables inside
cabinets housing the drive.
Electrical Installation
VLT
®
Inverter Scroll CDS 801 Operating Instructions
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