Fuses And Circuit Breakers; Motor - Danfoss VLT AQUA Drive FC 202 Design Manual

Electrical Installation Con...

10.5 Fuses and Circuit Breakers

Fuses ensure that possible damage to the drive is limited to damages inside the unit. To ensure compliance with EN 50178,
use identical Bussmann fuses as replacements. Refer to Table 10.8.
NOTICE
Use of fuses on the supply side is mandatory for IEC 60364 (CE) and NEC 2009 (UL) compliant installations.
Input voltage (V)
380–480
525–690
Table 10.8 Fuse Options
The fuses listed in Table 10.8 are suitable for use on a circuit capable of delivering 100000 A
the drive voltage rating. With the proper fusing, the drive short circuit current rating (SCCR) is 100000 A
drives are supplied with internal drive fusing to meet the 100 kA SCCR and to comply with UL 61800-5-1 enclosed drive
requirements. E3h and E4h drives must be fitted with Type aR fuses to meet the 100 kA SCCR.
NOTICE
DISCONNECT SWITCH
All units ordered and supplied with a factory-installed disconnect switch require Class L branch circuit fusing to meet
the 100 kA SCCR for the drive. If a circuit breaker is used, the SCCR rating is 42 kA. The input voltage and power rating
of the drive determines the specific Class L fuse. The input voltage and power rating is found on the product
nameplate. For more information regarding the nameplate, see the operating guide.
Input voltage (V) Power rating (kW)
380–480 315–400
380–480 450–500
525–690 355–560
525–690 630–710

10.6 Motor

10.6.1 Motor Cable
All types of 3-phase asynchronous standard motors can be used with a drive unit. The motor must be connected to the
following terminals:
•
U/T1/96
•
V/T2/97
•
W/T3/98
•
Ground to terminal 99
MG22B102
Design Guide
Bussmann ordering number
170M7309
170M7342
Short circuit rating (A)
42000
100000
42000
100000
40000
100000
42000
100000
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(symmetrical), depending on
rms
. E1h and E2h
rms
Required protection
Circuit breaker
Class L fuse, 800 A
Circuit breaker
Class L fuse, 1200 A
Circuit breaker
Class L fuse, 800 A
Circuit breaker
Class L fuse, 1200 A
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