Fuses - Danfoss VLT AQUA Operating Instructions Manual

VLT AQUA Low Harmonic Drive Operating In-
structions

4.6.14 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 over-current protected according 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 equipment 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
circuit breakers can be used to provide the over-current protection in the installation. Over-current 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:
P160 - P250
P315 - P450
UL Compliance
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), 240V, or 480V, or 500V, or 600V 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**
P160 FWH- JJS-
400 400
P200 FWH- JJS-
500 500
P250 FWH- JJS-
600 600
Table 4.3: Frame size D, Line fuses, 380-480 V
Size/Type Bussmann PN*
P315 170M4017
P355 170M6013
P400 170M6013
P450 170M6013
Table 4.4: Frame size E, Line fuses, 380-480 V
Size/Type Bussmann PN*
P500 170M7081
P560 170M7081
P630 170M7082
P710 170M7082
Table 4.5: Frame size F, Line fuses, 380-480 V
Size/Type
P500
P560
P630
P710
Table 4.6: Frame size F, Inverter module DC Link Fuses, 380-480 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
380 - 480 V
380 - 480 V
SIBA LittelFuse
E180276 E71611
JFHR2 JFHR2**
2061032.40 L50S-400
2061032.50 L50S-500
2062032.63 L50S-600
Rating
700 A, 700 V
900 A, 700 V
900 A, 700 V
900 A, 700 V
Rating
1600 A, 700 V
1600 A, 700 V
2000 A, 700 V
2000 A, 700 V
Bussmann PN* Rating
170M8611 1100 A, 1000 V
170M8611 1100 A, 1000 V
170M6467 1400 A, 700 V
170M6467 1400 A, 700 V
®
MG.20.T1.02 - VLT is a registered Danfoss trademark
Ferraz-
Bussmann
Shawmut
E4274
E60314
H/JDDZ**
JFHR2**
A50-P400 NOS-
400
A50-P500 NOS-
500
A50-P600 NOS-
600
Ferraz
6.9URD31D08A0700
6.9URD33D08A0900
6.9URD33D08A0900
6.9URD33D08A0900
Siba
20 695 32.1600
20 695 32.1600
20 695 32.2000
20 695 32.2000
20 781 32.1000
20 781 32.1000
20 681 32.1400
20 681 32.1400
4 How to Install
Current Limit . Moreover, fuses or
type gG
type gR
Bussmann Internal
E125085 Option
JFHR2* Bussmann
170M4012 170M4016
170M4014 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
Siba
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