Electrical cabling and connections vacon • 87
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
6
Fuse information
The values in tables are based on max ambient temperature of +50 ºC.
Fuse sizes can differ in the same chassis. Fuses can be chosen according to the biggest current
rating of the chassis to minimize fuse variants. Make sure that the I
sc
of the supply transformer is
high enough to burn fuses fast enough.
Check the current rating of the fuse bases according to the input current of the drive.
The physical size of the fuse is chosen on the basis of the fuse current: Current < 250 amps (size 1
fuse), current > 250 amps (size 3 fuse).
The aR fuses are thermally rated into switch fuse in 50 degree ambient temperature.
6.1.4 Cable installation instructions
CH64 1180 1180 - - - PC83UD12C11CTF 4
PC84UD11
C22CTQ
2
1100/
2200
CH64 1300 1300 - - - PC83UD11C13CTF 4
PC84UD11
C24CTQ
2
1300/
2400
CH64 1500 1500 - - - PC83UD11C14CTF 4
PC87UD12
C30CP50
2
1400/
3000
CH64 1700 1700 - - - PC73UD12C900TF 8
PC87UD11
C34CP50
2
900/
3400
CH64 1900 1900 - - - PC73UD12C900TF 8
PC87UD11
C34CP50
2
900/
3400
1
Before starting the installation, check that none of the components of the AC
drive is live.
2
VACON
®
NX Liquid-Cooled drive must always be installed in an enclosure, a
separate cubicle or an electrical room.
Always use a jib crane or similar lifting device to lift the drive. For safe and
appropriate lifting, see Chapter 5.1.1.
Table 44. Fuse sizes for VACON
®
NX Liquid-Cooled (640—1100 V) inverters
Chas
sis
Type
I
th
[A]
DIN43620
"TTF" threaded end
"7X"
or size 83 with end
contacts
"TTQF" threaded
end size84 or
"PLAF" 2x84 with
end contacts
Fuse
I
n
[A]
Fuse
size
aR fuse part
nr.
Fuses
needed
per
drive
aR fuse
part nr.
Fuses
needed
per
drive
aR fuse
part nr.
Fuses
needed
per
drive
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