Siemens SINAMICS G180 - C.11 Threshold Values for Fan Control System

Technical data
C.9 Technical data of the direct water cooling
Installation and Operating Instructions SINAMICS G180
204 Operating Instructions, 02/2019, 4BS0751-007
C.9
Technical data of the direct water cooling
Technical data
Converter type
Frame size
2T3A-77401-200 … 2T3A-77401-315
2T3A-77501-250 … 2T3A-77501-400
2T3A-77601-250 … 2T3A-77601-400
BG S2
2T3A-77401-400
2T3A-77501-500
2T3A-77601-500
BG S21
2T3A-77401-500 … 2T3A-77401-630
2T3A-77501-560 … 2T3A-77501-800
2T3A-77601-560 … 2T3A-77601-910
BG S3
If you connect several converters in parallel, the technical data are multiplied according to
the number of systems. The water flowrate for type 2T 6 A-7 5 69 4-925 with four converter
systems is e.g. 4×2000 l/h.
The water-cooled units BG S1 to BG S21 have the same cabinet width as the air-cooled
units.
In the case of units with frame size S3, the cabinet width when compared to the air-cooled
version increases as follows:
Cabinet increase for water cooling
Units with one system
200 mm
Units with two or three systems
400 mm
Units with four systems
600 mm
Water cooling - Ambient conditions
Frame size
BG S2, BG S21, BG S3
Degree of protection IP55
IP54 with operator panel in the door
Water quality For industrial water, see section "Permissible substance values for the cooling
water" (Page 205)
Permissible coolant temperature
+10 °C … +25 / 30°C (depends on the power, see converter documentation)
Permissible ambient temperature
In operation: +1 °C … +55 °C
Water cooling - Water pressure and amount of water
Frame size
BG S2
BG S2/21
BG S3
Water flow rate [l/h] 720 1200 2000
Min. operating pressure [bar] 1 1 2,5
Max. operating pressure [bar] 6 6 6
Pressure loss [approx. bar] 0,5 0,7 1,4
Test pressure [bar]
10
10
10