Danfoss VLT AutomationDrive FC 302, Design Manual

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Enclosure 415 V 480 V 600 V 690 V
D6h 120000 A 100000 A 65000 A 70000 A
D8h 100000 A 100000 A 42000 A 30000 A
Table 10.13 D6h and D8h Supplied with a Circuit Breaker
If the drive is supplied with a contactor-only option and is externally fused according to Table 10.14 , the SCCR of the drive is
as follows:
Enclosure 415 V
IEC
1)
480 V
UL
2)
600 V
UL
2)
690 V
IEC
1)
D6h 100000 A 100000 A 100000 A 100000 A
D8h (not including the N250 T5 model) 100000 A 100000 A 100000 A 100000 A
D8h (N250 T5 model only) 100000 A Consult factory Not applicable Not applicable
Table 10.14 D6h and D8h Supplied with a Contactor
1)
With a Bussmann type LPJ-SP or Gould Shawmut type AJT fuse. 450 A maximum fuse size for D6h and 900 A maximum fuse size for D8h.
2) Must use Class J or L branch fuses for UL approval. 450 A maximum fuse size for D6h and 600 A maximum fuse size for D8h.
E1h–E4h recommended fuses
The fuses listed in Table 10.15 are suitable for use on a circuit capable of delivering 100000 A
rms
(symmetrical), depending on
the drive voltage rating. With the proper fusing, the drive short circuit current rating (SCCR) is 100000 A
rms
. E1h and E2h
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.
Input voltage (V) Bussmann ordering number
380–500 170M7309
525–690 170M7342
Table 10.15 E1h–E4h Fuse Options
Bussmann Rating
LPJ-21/2SP 2.5 A, 600 V
Table 10.16 E1h–E2h Space Heater Fuse Recommendation
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 (hp)] Short circuit rating (A) Required protection
380–500 315–400 (450–550) 42000 Circuit breaker
100000 Class L fuse, 800 A
380–500 450–500 (600–650) 42000 Circuit breaker
100000 Class L fuse, 1200 A
525–690 355–560 (400–600) 40000 Circuit breaker
100000 Class L fuse, 800 A
525–690 630–710 (650–750) 42000 Circuit breaker
100000 Class L fuse, 1200 A
Electrical Installation Con... VLT® AutomationDrive FC 302
152 Danfoss A/S © 01/2018 All rights reserved. MG38C202
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