Nidec Leroy-Somer Powerdrive MD Smart, Руководство по интеграции

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41
HARDWARE SELECTION
Powerdrive MD Smart Integration Guide
5751 en - 2021.10 / e
HARDW
ARE
SELECTION
2.3.1.6 - Example of component selection
The component selection tables for AFE variable speed drives are detailed in paragraphs 2.2.2.3 to 2.2.2.6 , depending on the
power supply voltage used.
An example selection is described below.
Application
• 200 kW asynchronous motor, 4 standard poles, 400 V power supply
• Centrifugal application (reduced overload)
• Altitude <1000 m, T_rate design temperature less than 40°C
• Chopping frequency of 3 kHz (without overtorque at start-up).
In the first part of the selection table, AFE 400 V variable speed drive of
§2.3.2.2 , the selection indicated in yellow below is
obtained.
P_MOTOR 4P
at 3 kHz 400V at 40°C
(kW) T_Rate
INVERTER
Values per
inverter
(µF)
LS MODEL
MOTOR current Isp Output Intersils
steady (A)
DC current
Reduced overload Maximum overload Imax
3s
(A)
Imax
60s
(A)
Rated
input (A)
40°C
Max. input
(A)
Reduced
Overload
Maximum
Overload
3 kHz 4 kHz 6 kHz 8 kHz 3 kHz 4 kHz 6 kHz 8 kHz
160 132
40 °C 325 301 248 209 268 249 204 173
380 347 360 414 9400 180T
50 °C 305 282 232 196 251 233 191 162
200 160
40 °C 421 397 351 310 331 319 281 349
490 449 481 553 14100 220T
50 °C 393 378 334 295 315 303 268 237
The selected LS model is 220T.
The second part of the table shows the selection of components for the MD3R 220T Powerdrive variable speed drive, shown in
yellow below.
• Selection of components for variable speed drive
LS
MODEL
INVERTER
SEPARATED
VENTILATION FOR
AO VERSION
CONTROL MODULE PRELOAD
LINE
REGEN
§2.5.2.2
UR fuse
§2.5.2.2
SINE FILTER
§2.5.2.2
RFI FILTER
§2.5.2.2
xx = AF (WITH VENTILATION)
xx = AO (WITHOUT
VENTILATION)
180T
2
MD3INVxx315N
2
MD3CTLN
+
2
RMD3KITxxxMM
0.175mH
380A
3* UR
T31.660V.500A
0.085mH 380A
+
3*40
µF
FN 3359 HV-400
220T
2
MD3INVxx408N
6
MD3VFT2NEMA4
0.13mH
470A
3* UR
T33.690V.630A
0.07mH 470A
+
3*50 µF
RMD3PRECHARGE
270T
2
MD3INVxx497N
3
MD3VFT2NEMA4
3* UR
T33.690V.800A
Leroy-Somer
Model LS 220T requires the following components:
• 2 inverters: MD3INVxx408N (because we want a ventilated version), so the reference becomes MD3INVAF408N
• 2 control modules: KITCxxINV (xxxx = cable length §4.9 )
• Preload: MD3PRG see §2.5.3 .
• Regen reactor: value to be respected is 0.13 mH ; 470 A , externally sourced see §2.5.2.1
• 3 UR fuses: the value to be respected is
T33
;
690 V
;
630 A
, externally sourced see §2.5.2.1
• Sine filter: value to be respected is 0.07 mH ; 470 A + 3*50 µF , externally sourced see §2.5.2.1 .
• RFI filter: type to be respected is FN3359HV400 , externally sourced see §2.5.2.1