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9.3.1.2 Recommendations
The tables in
chapter 9.3.1 Fuses and Circuit Breakers
list the
recommended rated current. Recommended fuses are of
the type gG for small to medium power sizes. For larger
power sizes, aR fuses are recommended. For circuit
breakers, Moeller types are recommended. Other types of
circuit breakers may be used, provided they limit the
energy into the frequency converter to a level equal to or
lower than the Moeller types.
If fuses/circuit breakers according to recommendations are
selected, possible damage on the frequency converter is
mainly limited to damages inside the unit.
For further information see
Application Note Fuses and
Circuit Breakers, MN90T
.
9.3.1.3 CE Compliance
Fuses or circuit breakers are mandatory to comply with IEC
60364. Danfoss recommend using a selection of the
following.
The fuses below are suitable for use on a circuit capable of
delivering 100,000 A
rms
(symmetrical), 240 V, 500 V, 600 V,
or 690 V depending on the frequency converter voltage
rating. With the proper fusing the frequency converter
short circuit current rating (SCCR) is 100,000 A
rms
.
The following UL listed fuses are suitable:
•
UL248-4 class CC fuses
•
UL248-8 class J fuses
•
UL248-12 class R fuses (RK1)
•
UL248-15 class T fuses
The following max. fuse size and type have been tested:
Enclosure
Power [kW]
Recommended
fuse size
Recommended
max. fuse
Recommended circuit
breaker
Moeller
Max trip level [A]
A1
0.25-1.5
gG-10
gG-25
PKZM0-10
10
A2
0.25-2.2
gG-10 (0.25-1.5)
gG-16 (2.2)
gG-25
PKZM0-16
16
A3
3.0-3.7
gG-16 (3)
gG-20 (3.7)
gG-32
PKZM0-25
25
A4
0.25-2.2
gG-10 (0.25-1.5)
gG-16 (2.2)
gG-32
PKZM0-25
25
A5
0.25-3.7
gG-10 (0.25-1.5)
gG-16 (2.2-3)
gG-20 (3.7)
gG-32
PKZM0-25
25
B1
5.5-7.5
gG-25 (5.5)
gG-32 (7.5)
gG-80
PKZM4-63
63
B2
11
gG-50
gG-100
NZMB1-A100
100
B3
5.5
gG-25
gG-63
PKZM4-50
50
B4
7.5-15
gG-32 (7.5)
gG-50 (11)
gG-63 (15)
gG-125
NZMB1-A100
100
C1
15-22
gG-63 (15)
gG-80 (18.5)
gG-100 (22)
gG-160 (15-18.5)
aR-160 (22)
NZMB2-A200
160
C2
30-37
aR-160 (30)
aR-200 (37)
aR-200 (30)
aR-250 (37)
NZMB2-A250
250
C3
18.5-22
gG-80 (18.5)
aR-125 (22)
gG-150 (18.5)
aR-160 (22)
NZMB2-A200
150
C4
30-37
aR-160 (30)
aR-200 (37)
aR-200 (30)
aR-250 (37)
NZMB2-A250
250
Table 9.3 200-240 V, Enclosure Types A, B and C
Electrical Installation
VLT
®
AutomationDrive FC 301/FC 302 Design Guide, 0.25-75 kW
MG33BF02 - Rev. 2013-12-20
123
9
9
Содержание VLT AutomationDrive FC 301
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