Fuses - Danfoss VLT AQUA Instruction Manual

VLT AQUA High Power Instruction Manual

3.6.14 Fuses

Branch circuit protection:
In order to protect the installation against electrical and fire hazard, all branch circuits in an installation, switch gear, machines, etc., must be short-
circuited and overcurrent protected according to national/international regulations.
Short-circuit protection:
The adjustable frequency drive must be protected against short-circuit to avoid electrical or fire hazard. Danfoss recommends using the fuses mentioned
below to protect service personnel and equipment in case of an internal failure in the drive. The adjustable frequency drive provides full short-circuit
protection in case of a short-circuit on the motor output.
Overcurrent protection
Provide overload protection to avoid fire hazard due to overheating of the cables in the installation. The adjustable frequency drive is equipped with
internal overcurrent protection that can be used for upstream overload protection (UL applications excluded). See par. 4-18
fuses or circuit breakers can be used to provide the overcurrent protection in the installation. Overcurrent protection must always be carried out according
to national regulations.
Non-UL compliance
If UL/cUL is not to be complied with, we recommend using the following fuses, which will ensure compliance with EN50178:
In case of malfunction, not following the recommendation may result in unnecessary damage to the adjustable frequency drive.
P110 - P250
P315 - P450
380–480 V, frame sizes D, E and F
The fuses below are suitable for use on a circuit capable of delivering 100,000 Arms (symmetrical), 240 V, or 480 V, or 500 V, or 600 V depending on
the drive voltage rating. With the proper fusing, the drive Short Circuit Current Rating (SCCR) is 100,000 Arms.
Bussmann Bussmann
Size/
E1958 E4273
Type
JFHR2** T/JDDZ**
P110 FWH- JJS-
300 300
P132 FWH- JJS-
350 350
P160 FWH- JJS-
400 400
P200 FWH- JJS-
500 500
P250 FWH- JJS-
600 600
Table 3.4: Frame size D, Line fuses, 380–480 V
Size/Type Bussmann PN*
P315 170M4017
P355 170M6013
P400 170M6013
P450 170M6013
Table 3.5: Frame size E, Line fuses, 380–480 V
Size/Type Bussmann PN*
P500 170M7081
P560 170M7081
P630 170M7082
P710 170M7082
P800 170M7083
P1M0 170M7083
Table 3.6: Frame size F, Line fuses, 380–480 V
380–480 V
380–480 V
SIBA LittelFuse
E180276 E71611
JFHR2 JFHR2**
2061032.315 L50S-300
2061032.35 L50S-350
2061032.40 L50S-400
2061032.50 L50S-500
2062032.63 L50S-600
Rating
700 A, 700 V 6.9URD31D08A0700
900 A, 700 V 6.9URD33D08A0900
900 A, 700 V 6.9URD33D08A0900
900 A, 700 V 6.9URD33D08A0900
Rating
1600 A, 700 V
1600 A, 700 V
2000 A, 700 V
2000 A, 700 V
2500 A, 700 V
2500 A, 700 V
®
MG.20.P3.22 - VLT is a registered Danfoss trademark
Ferraz-
Bussmann Bussmann
Shawmut
E4274 E125085
E60314
H/JDDZ** JFHR2*
JFHR2**
A50-P300 NOS- 170M3017
300
A50-P350 NOS- 170M3018
350
A50-P400 NOS- 170M4012
400
A50-P500 NOS- 170M4014
500
A50-P600 NOS- 170M4016
600
Ferraz
Siba
20 695 32.1600
20 695 32.1600
20 695 32.2000
20 695 32.2000
20 695 32.2500
20 695 32.2500
3 How to Install
Current Limit
. Moreover,
type gG
type gR
Internal
Option
Bussmann
170M3018
170M3018
170M4016
170M4016
170M4016
Siba
20 610 32.700
20 630 32.900
20 630 32.900
20 630 32.900
Internal Bussmann Option
170M7082
170M7082
170M7082
170M7082
170M7083
170M7083
3-59
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