Preparing for use
4.7 Thermal protection
1MB..1/2/3/4 - shaft heights 63 ... 355
Operating Instructions, 06/2020, A5E44455710A
43
Incorrect
Correct
Minimum dimension "x" for the distance between neighboring modules and the air intake of the ma-
chine
Table 4- 2
Minimum dimension "x" for the distance between adjacent modules and the air intake of
the machine
Shaft height
x
mm
63 ... 71
15
80 ... 100
20
112
25
132
30
160
40
180 ... 200
90
225 ... 250
100
280 ... 315
110
355
140
4.7
Thermal protection
Protect explosion-protected machines against overload according to IEC / EN 60079-14,
Section "Rotating electrical machines".
Use a motor circuit breaker, directly monitor the winding temperature or use equipment to
provide the same functionality corresponding to the explosion type of protection.