09.02  Technical Data 
Siemens AG    6SE7087 6AK85-1AA0 
14-7 
Rectifier/Regenerating Unit    Operating Instructions 
R/R unit  6SE70..-.....-1AA0  37-7FH85 41-0FH85 41-3FK85 41-5FK85  41-8FK85 
Rated voltage, rated frequency, rated current 
Rated voltage 
Rectifier connection 
Regenerative connection 
 
DC link voltage 
V  
3AC 500V –15% to 600V +10% 
using an (auto) transformer 
1.2 times the voltage of the rectifier connection 
DC 675V –15% to 810V +10% 
Rated frequency f
n
 
Input 
Output 
Hz  
46 to 64  (automatic frequency matching) 
DC 
Rated current 
(rms value) 
With autotransformer
 
 Regenerating, line 
 side 
 Regenerating, unit 
 side 
 Rectifier operation 
Without autotransformer
 
 Regenerating, unit 
 side 
 Rectifier operation 
A  
 
 
741 
 
617 
 
671 
 
617 
 
671 
 
 
 
980 
 
817 
 
888 
 
817 
 
888 
 
 
 
1235 
 
1029 
 
1119 
 
1029 
 
1119 
 
 
 
1401 
 
1168 
 
1269 
 
1168 
 
1269 
 
 
 
1803 
 
1502 
 
1633 
 
1502 
 
1633 
Load class I to EN 60146-1-1 of the DC link current (average value) 
in rectifier operation; currents reduced to 92% in regenerative operation 
Rated current 
(average) 
  DC link connection 
 Rectifier operation 
A  774  1023 1285 1464 1880 
Load class II to EN 60146-1-1 of the DC link current (average value) 
in rectifier operation; currents reduced to 92% in regenerative operation 
Rated current  A 704  931  1169 1332 1711 
Base load duration  s      240     
Excess current  A 1057 1396 1754 1998 2566 
Excess current duration  s      60     
Losses, cooling 
Power dissipation 
− 
Maximum 
kW 3.30 4.03 5.40 5.87 7.65 
Cooling air requirement  m
3
/s 0.55 0.55 1.0 1.0 1.0 
Sound pressure level, dimensions, weight 
Sound pressure level  50 Hz 
                                    60 Hz 
dB(A) 80 
83 
80 
83 
82 
82 
82 
82 
82 
82 
Size 
Width 
Height 
Depth 
 
mm 
mm 
mm 
H 
508 
1400 
551 
H 
508 
1400 
551 
K 
800 
1725 
550 
K 
800 
1725 
550 
K 
800 
1725 
550 
Weight app.  kg 175  175 450 450 470 
 
Parallel units (-1AD0) of size K for connecting in parallel have the same technical data as the corresponding 
"basic units" (-1AA0). Please note the unit correspondence and notes of Section 3.7! 
The permissible output current in parallel mode is reduced (due to current division between the power sections) 
by 10 % as compared to the sum of the rated currents of the separate power sections. 
AoteWell Automation Sales Team
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