Siemens SIMOTICS M-1PH8 - Page 81

Shaft height Flow
rate, min.
l/min
Pressure drop
bar
Sound pressure level L
pA
(1 m)
Motor rated load,
tolerance +3 dB
dB
Thread con‐
nection at
NDE
Inch
180 (1PH8184) 15 0.6 70
2)
G 3/8
180 (1PH8186) 15 0.7 G3/8
225 (1PH822.-1)
(asynchronous)
20 0.6 G 3/8
225 (1PH822.-2)
(synchronous)
25 0.9 70
3)
G 3/8
280 35 0.6 72
3)
G 1/2
1) For a rated pulse frequency of 4 kHz and speed range up to 5000 r/min
2) For a rated pulse frequency of 2 kHz or 4 kHz and speed ranges for
SH 180 of up to 5000 r/min
SH 225 up to 4500 r/min
3) For a rated pulse frequency of 2 kHz and speed ranges for
SH 225 of up to 4500 per r/min
SH 280 up to 3300 r/min
Heat loss to be dissipated
The values for the heat loss to be dissipated are speci󹪝ed according to the rated point in Chapter
"Technical tables and characteristics."
Water speci󹪝cation
Cooling water quality
The values speci󹪝ed for the cooling water correspond to the requirements for a closed
cooling circuit. Not all speci󹪝ed concentrations will occur in the cooling water at the same
time.
A 󹪝lter can be used to ensure smooth operation. The grade of 󹪝ltration should be no less than
100μm.
Cooling water inlet temperature
The maximum cooling water inlet temperature is 30°C (86 °F)
Cooling water speci󹪝cations
Table 4-12 Cooling water speci󹪝cations (SH 80 to 160)
Component Quality of the water used as coolant for motors with stain‐
less steel pipes + cast iron or steel jacket
pH value 6 ... 9
Total hardness < 170ppm
Electrical conductivity < 500μS/cm
Chloride ions < 40ppm, can be achieved by adding deionized water.
Sulfate ions < 50ppm
Mechanical properties
4.1Cooling
1PH8 SIMOTICS M main motors
Con󹪝guration Manual, 12/2022, A5E51895839A 79