Danfoss VLT AutomationDrive FC 301, Design Manual, Page: 144 / 200

Enclosure types Power Size [kW]
Voltage [V] 1 cable [m] 2 cables [m] 3 cables [m] 4 cables [m]
A1, A2, A4, A5
0.37-
0.75 400 150 45 8 6
500 150 7 4 3
A2, A4, A5 1.1-1.5
400 150 45 20 8
500 150 45 5 4
A2, A4, A5 2.2-4
400 150 45 20 11
500 150 45 20 6
A3, A4, A5 5.5-7.5
400 150 45 20 11
500 150 45 20 11
B1, B2, B3, B4,
C1, C2, C3, C4
11-75
400 150 75 50 37
500 150 75 50 37
A3 1.1-7.5 525-690 100 50 33 25
B4 11-30 525-690 150 75 50 37
C3 37-45 525-690 150 75 50 37
Table 9.19 Max. Cable Length for Each Parallel Cable
9.8 Safety
9.8.1 High Voltage Test
Carry out a high voltage test by short-circuiting terminals
U, V, W, L
1
, L
2
and L
3
. Energise maximum 2.15 kV DC for
380-500 V frequency converters and 2.525 kV DC for
525-690 V frequency converters for one second between
this short-circuit and the chassis.
WARNING
When running high voltage tests of the entire instal-
lation, interrupt the mains and motor connection if the
leakage currents are too high.
9.8.2 EMC Grounding
Proper EMC grounding practice
•
Respect safety grounding.
•
Keeping the ground connection as short as
possible results in the best EMC performance.
•
Wires with greater square have a lower
impedance and better EMC grounding.
•
In case where more devices with metal cabinets
are used, mount them on common metal
mounting plate to improve EMC performance.
NOTICE
If necessary, use washers for fastening bolts, e.g. in case
of painted parts.
CAUTION
POTENTIAL HAZARD IN THE EVENT OF INTERNAL
FAILURE
Risk of personal injury when the frequency converter is
not properly closed.
•
Before applying power, ensure all safety covers
are in place and securely fastened.
9.8.3 ADN-compliant Installation
Units with ingress protection rating IP55 (NEMA 12) or
higher prevent spark formation, and are classified as
limited explosion risk electrical apparatus in accordance
with the European Agreement concerning International
Carriage of Dangerous Goods by Inland Waterways (ADN).
For units with ingress protection rating IP20/Chassis, IP21/
NEMA 1, or IP54, prevent risk of spark formation as follows:
•
Do not install a mains switch
•
Ensure that 14-50 RFI Filter is set to [1] On .
•
Remove all relay plugs marked “RELAY”. See
Illustration 9.56 .
•
Check which relay options are installed, if any.
The only permitted relay option is Extended Relay
Card MCB 113.
Electrical Installation
VLT
®
AutomationDrive FC 301/FC 302 Design Guide, 0.25-75 kW
142 MG33BF02 - Rev. 2013-12-20
9 9