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Tolerances<br />
Following tolerances are admitted according to DIN EN 60034-1/02.99. These tolerances are permissible <strong>for</strong> the values assured <strong>for</strong> three-phase asynchronous<br />
motors, taking the necessary manufacturing tolerances and material variations of the used raw materials into account. The standard contains<br />
the following notes to that:<br />
1. A guarantee <strong>for</strong> all or any of the values shown in the table ist not mandatory. In tenders, the guaranteed values <strong>for</strong> which permissible deviations<br />
should apply must be expressly specified. The permissible variations must correspond to those stated in the table.<br />
2. There is pointed to the distinctions concerning the definition „Guarantee“. In some countries, distinction is drawn between guaranteed values and<br />
typical or declared values.<br />
3. If the permissible deviation applies only in one direction, then the value in other direction is not limited.<br />
Tolerances of the design values<br />
Efficiency (with indirect calculation)<br />
-0,15 (1-h) up to PN ≤ 50 kW<br />
-0,1 (1-η) up to P N > 50 kW<br />
Power faktor 1-cosϕ at least 0,02<br />
6 at most 0,07<br />
Slip<br />
+ 20 % up to P N ≥ 1kW<br />
(at rated-load operating temperature)<br />
+ 30 % up to P N < 1kW<br />
Starting current + 20 %<br />
(in the planned starting circuit)<br />
without limiting downwards<br />
Starting torque - 15 % and + 25 %<br />
Pull-up torque - 15 %<br />
Pull-out torque - 10 % (with the application of this tolerance M K /M at least. 1,6)<br />
Moment of inertia + 10 %<br />
Noise intensity (measurement area sound pressure level) + 3 dB (A)<br />
Tolerances of the fixing dimensions<br />
Dimensional<br />
short sign according to DIN Meaning of the dimension Fit or tolerance<br />
a Spacing of housing foot fixing holes in axial direction + 1 mm<br />
b Spacing of housing foot fixing holes + 1 mm<br />
across the axial direction<br />
e1 Pitch circle diameter of the attachment flange + 0,8 mm<br />
a1 Diameter or width across corner of the flange + 1 %<br />
g Largest width of the motor + 2 %<br />
f<br />
(without terminal box)<br />
k Overall length of the motor + 1 %<br />
k1<br />
p Overall height + 2 %<br />
(lower edge foot, housing or flange up to highest point of the motor)<br />
s Diameter of the fixing holes of the foot or of the flange + 3 %<br />
s1<br />
w1 Centre of the first fixing hole up to shaft end shoulder + 3 mm<br />
w2<br />
b1 Diameter of the centering shoulder of the attachment flange up to 230 j6<br />
from 250 h6<br />
d Diameter of the shaft end up to Ø 48 k6<br />
d1<br />
from Ø 55 m6<br />
h Shaft height (lower edge foot up to centre of shaft end) up to 250-0,5<br />
higher than 250-1<br />
u Width of the key h9<br />
u1<br />
t Lower edge of shaft end up to upper edge of key + 0,2 mm<br />
t1<br />
Motor weight - 5 bis + 10 %<br />
6