Küenle KFU 2 Series, Manual

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KFU 2-/4-
22
3.4 KFU 2- (1.5 to 3.0 kW, 230 V)
Type
KFU 2- -11 -13 -15
Construction Size 2
Output, motor side
Recommended motor shaft power P kW 1.5 2.2
3.0
4)
Output current I A 7.0 9.5 12.5
4) 5)
Long-term overload current (60 s) I A 10.5 14.3 16.2
Short-time overload current (1 s) I A 14.0 19.0 19.0
Output voltage U V Maximum input voltage, three-phase
Protection - - Short circuit / earth fault proof
Rotary field frequency f Hz 0 ... 1000, depending on switching frequency
Switching frequency f kHz 2, 4, 8, 12, 16
Output, brake resistor
Min. brake resistance R Ω 37 37 37
Recommended brake resistor
(U
dBC
= 385 V)
R Ω 75 55 37
Input, mains side
Mains current
3)
3ph/PE
1ph/N/PE; 2ph/PE
I A
7
13.2
9.5
16.5
2)
10.5
1)
16.5
2) 4) 7)
Mains voltage U V 184 ... 264
Mains frequency f Hz 45 ... 66
Fuse 3ph/PE
1ph/N/PE; 2ph/PE
I A
10
16 16
20 16
20
UL type 250 VAC RK5, 3ph/PE
1ph/N/PE; 2ph/PE
I A
10
15 15
20 15
20
Mechanics
Dimensions HxWxD mm 250 x 60 x 175
Weight (approx.) m kg 1.6
Degree of protection - - IP20 (EN60529)
Terminals A mm
2
0.2 ... 1.5
Form of assembly - - Vertical
Ambient conditions
Energy dissipation (2 kHz switching
frequency)
P W 84 115 170
Coolant temperature T
n
°C 0 ... 40 (3K3 DIN IEC 721-3-3)
Storage temperature T
L
°C -25 ... 55
Transport temperature T
T
°C -25 ... 70
Rel. air humidity - % 15 ... 85; not condensing
If required by the customer, the switching frequency may be increased if the output current is reduced at the
same time. Comply with the applicable standards and regulations for this operating point.
Output current
6)
Switching frequency
Frequency inverter nominal power
2 kHz 4 kHz 8 kHz 12 kHz 16 kHz
1.5 kW 7.0 A 7.0 A 7.0 A 5.9 A 4.8 A
2.2 kW 9.5 A
2)
9.5 A
2)
9.5 A
2)
8.0 A
2)
6.5 A
3.0 kW
2) 4)
12.5 A
1)
12.5 A
1) 5)
12.5 A
1) 5)
10.5 A
1) 5)
8.5 A
5)
1)
Three-phase connection requires a commutating choke.
2)
One- and two-phase connection requires a commutating choke.
3)
Mains current with relative mains impedance ≥ 1% (see chapter„Electrical installation“)
4)
Maximum output current = 9.5 A with single-phase and two-phase connection
5)
Reduction of switching frequency in thermal limit range
6)
Maximum current in continuous operation
7)
The device for single phase connection is not listed in the product catalogue and only available on request.