ABB M3LP 280 SM Manuel Supplémentaire page 7

9 A K K 1 0 4 3 7 8 M L 1 0 - 2 0 2 0
In environments with risk of sub-zero tempera-
tures, a glycol/water mixture can be used with
40/60 mixture (glycol/water), with a recom-
mended minimum environment temperature of
-20 °C.
The lower the cooling water input temperature,
the better the cooling of the motor.
For some cases a higher input temperature can
be allowed when requested and checked by the
manufacturer.
Motor type Number of
M3LP inlets
Frame type
280 SM_ 1
315 KH_ 1
315 LK_ 1
355 ML_ 1
355 LK_ 1
400 L_ 1
450 L_ 1
500 L_ 1
Cooling Water Water
water flow pressure temp . rise
rate min . (bar) (K)
(l/min)
20 2,0 7-12
30 2,0 7-12
30 2,0 7-12
30 2,0 10-15
35 2,0 10-15
40 2,0 10-15
50 2,0 10-15
60 2,0 10-15
The outlet water temperature rise is from 7–15 K.
The minimum pressure and amount of cooling
water for the basic construction of a water
cooled motor is shown in the following table.
Please check the requirements for pressure and
the amount of cooling water in the case of spe-
cial constructions.
(If the amount of water varies, its temperature
rise will be inversely proportional to the flow rate.)
Heat transfer of thermal loss in
(approx .) ratio air/water at room
temperature
Temperature of inlet cooling water
25 °C 40 °C
10/90 30/70
10/90 30/70
10/90 30/70
10/90 30/70
10/90 30/70
10/90 30/70
10/90 30/70
10/90 30/70
7
Water-space
of st . frame
(l)
1,2
3,5
4,7
28
35
50
65
71