Fuses - Danfoss VLT Automation Drive FC 300 Operating Instructions Manual

®
VLT Automation Drive FC 300
Operating Instructions High Power

3.5.14. Fuses

Branch circuit protection:
In order to protect the installation against electrical and fire hazard, all branch circuits in an in-
stallation, switch gear, machines etc., must be short-circuited and over-current protected accord-
ing to national/international regulations.
Short-circuit protection:
The frequency converter must be protected against short-circuit to avoid electrical or fire hazard.
Danfoss recommends using the fuses mentioned below to protect service personnel and equip-
ment in case of an internal failure in the drive. The frequency converter provides full short-circuit
protection in case of a short-circuit on the motor output.
Over-current protection
Provide overload protection to avoid fire hazard due to overheating of the cables in the installation.
The frequency converter is equipped with an internal over-current protection that can be used for
upstream overload protection (UL-applications excluded). See par. 4-18. Moreover, fuses or circuit
breakers can be used to provide the over-current protection in the installation. Over-current pro-
tection must always be carried out according to national regulations.
Fuses must be designed for protection in a circuit capable of supplying a maximum of 100,000
A (symmetrical).
rms
Fuse Tables
Size/
Type
P90K
P110
P132
P160
P200
Table 3.5: D enclosures, 380-500 V
*170M fuses from Bussmann shown use the -/80 visual indicator, -TN/80 Type T, -/110 or TN/
110 Type T indicator fuses of the same size and amperage may be substituted for external use
**Any minimum 500 V UL listed fuse with associated current rating may be used to meet UL
requirements.
Size/Type
P110
P132
P160
P200
P250
P315
Table 3.6: D enclosures, 525-690 V
Buss- Buss-
mann mann SIBA
E1958 E4273 E180276
JFHR2* T/ RKI/JDDZ
* JDDZ**
FWH- JJS- 2028220-
300 300 315
FWH- JJS- 2028220-
350 350 315
FWH- JJS- 206xx32-
400 400 400
FWH- JJS- 206xx32-
500 500 500
FWH- JJS- 206xx32-
600 600 600
Bussmann
E125085 Amps
JFHR2
170M3017 315
170M3018 350
170M4011 350
170M4012 400
170M4014 500
170M5011 550
MG.33.U1.02 - VLT ® is a registered Danfoss trademark
Buss-
Ferraz-
LittelFuse mann
Shawmut
E71611 E4274
E60314
JFHR2** H/
JFHR2**
JDDZ**
L50S-300 A50-P300 NOS-
300
L50S-350 A50-P350 NOS-
350
L50S-400 A50-P400 NOS-
400
L50S-500 A50-P500 NOS-
500
L50S-600 A50-P600 NOS-
600
SIBA
E180276
JFHR2
2061032.315
2061032.35
2061032.35
2061032.4
2061032.5
2062032.55
3. How to Install
Bussmann Internal
E125085 Option
JFHR2* Bussmann
170M3017 170M3018
170M3018 170M3018
170M4012 170M4016
170M4014 170M4016
170M4016 170M4016
Ferraz-Shawmut
E76491
JFHR2
6.6URD30D08A0315
6.6URD30D08A0350
6.6URD30D08A0350
6.6URD30D08A0400
6.6URD30D08A0500
6.6URD32D08A550
3
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