Fagor DDS Series, Hardware Manual

Page: 213 / 406

   Selection criteria
5.
Ref.1912
· 213 ·
DDS
HARDWARE
Then, considering the peak power (S3-5% cycle) that some motors may request sometime:
T. H5/6 Selection of the power supply considering the peak power (S3-5% cycle) supplied by the drive
for IGBT switching frequencies of 4 kHz and 8 kHz.
SYNCHRONOUS FXM/FKM
Peak power P (S3-5%)
P (S3-5%)
(kW)
GROUP I
0 to 2 kW
synchronous
1
2
Sum of GROUP I
*
Ki

3
+
GROUP II
2 to 8.5 kW
synchronous
1
2
Sum of GROUP II
*
Kii

3
+
GROUP III
8.5 to 27 kW
synchronous
1
2
Sum of GROUP III *
Kiii

3
=
SUM OF POWER (kW)
3
Nr of synchronous
motors per group
K
factor
AXD
drive Power
(S3-5%)
1 1 AXD 1.08 5.2
2 0.63 AXD 1.15 9.8
3 0.50 AXD 1.25 16.4
4 0.38 AXD 1.35 23.0
5 0.33 AXD 2.50 32.9
6 0.28
AXD 2.75 49.3
AXD 3.100 65.8
AXD 3.150 98.7
in kW
V = 400 V AC
Ip = Imax of the drive that governs the motor
cos

= 0.95
POWER S3-5% 3 V I
P

cos   
=