Danfoss AHF 005, Руководство пользователя

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AHF 005/010
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Ordering numbers, 690 V 50 Hz
Danfoss ordering number Typical Danfoss adjustable frequency
drive series
I
AHF,N
Typical Motor
Used [kW]
AHF 005 AHF 010 VLT 5000 160 % VLT 8000 HVAC
43 A 37, 45 130B2328 130B2293 5042, 5052 8052
72 A 55, 75 130B2330 130B2295 5062, 5072 8062, 8072
101 A 90 130B2331 130B2296 5102 8102
144 A 110, 132 130B2333 130B2298 5122, 5152 8122, 8152
180 A 160 130B2334 130B2299 5202 8202
217 A 200 130B2335 130B2300 5252 8252
289 A 250 130B2331 &
130B2333
130B2301 5302 8302
324 A 315 130B2333 &
130B2334
130B2302 5352 8352
370 A 400 130B2334 &
130B2335
130B2304 8402
Please note that the matching of the typical Danfoss adjustable frequency drive and filter is pre-calculated
based on 500V and assuming typical motor load. VLT 5000 series is based on a 160 % torque application,
while the VLT 8000 series are based on 110% torque application.
The pre-calculated filter current may vary from the input current ratings of VLT 5000 and VLT 8000 series as
stated in the respective instruction manuals, as these numbers are based on different operating conditions.
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Calculation of the exact filter size needed
For optimal performance, the harmonic filter should
be sized for the line input current to the adjustable
frequency drive, i.e. the input current drawn based on
the expected load of the adjustable frequency drive
and not the size of the adjustable frequency drive itself!
The line input current to the adjustable frequency
drive (I
FC,L
) can by calculated using the nominal motor
current (I
M,N
) and displacement power factor (Cos
φ
)) of the motor. Both data are normally printed
on the nameplate of the motor. In the case where
the nominal motor voltage (U
M,N
) is unequal to the
actual line-line voltage (U
L
), the calculated current
must be corrected with the ratio between these
voltages as shown in the equation below.
The harmonic filter chosen must have a nominal current
(I
AHF,N
) equal to or larger than the calculated adjustable
frequency drive line input current (I
FC,L
).
If several adjustable frequency drives are to
be connected to the same filter, the harmonic
filter must be sized according to the sum of
the calculated line currents.
If the harmonic filter is sized for the load, and
the motor of the corresponding adjustable
frequency drive is changed, the current must
be re-calculated to avoid overload of the harmonic filter.
MG.80.B4.22 - VLT is a registered Danfoss trademark
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