Table 3-4 Terminal Box Assignments - Siemens 1PH728 Operating Instructions Manual

Table 3-3
1
x
Connecting using cable lugs
To connect the cables to the main terminals, select cable lugs that match the necessary
cable cross-section and bolt size M16.
Table 3-4 Terminal box assignments
Size Motor type
1PH7 motors, size 280
280 1PH728.-..B
1PH7284-..C
1PH7284-..D
1PH7286-..C
1PH7286-..D
1PH7288-..C
1PH7288-..D
1PH728.-..F
reduction factor 0.60
(1)
including ground terminal
(2)
The cable lug size defines the cable cross-section which can be connected, e.g. cable lugs
from 35 to 185 mm
The permissible external diameter of the connecting cable is 31 to 68 mm.
Remove the insulation from the conductor ends so that the remaining insulation is almost
long enough to reach the cable lug.
If necessary, insulate the cable lugs in order to maintain the minimum clearances in air of 10
mm and the 20 mm creepage distance normally present.
Siemens AG A5E00177602A
Operating Instructions V 2.0 1PH728
Terminal designations (on the example of 1U1-1)
U 1 - 1 Designation
Index showing the pole assignment for pole-changing motors (where applicable,
a lower number indicates a lower speed) or, in special cases, for a subdivided
winding
x Phase designation (U, V, W)
x Index showing the start (1) / end (2) or tapping point of the winding (if there is
more than one connection per winding)
x Additional index for cases in which it is obligatory to connect parallel power feed
cables to several terminals with otherwise identical designations
Terminal Cable
box type entry
1XB7712 3 x M63 x 1.5
1XB7712 3 x M75 x 1.5
according to DIN 46234 or from 35 to 185 mm
2
Max. poss. No. of main
outer terminals
diameter of
cable [mm]
53 (3+1) x 3 x M16
2)
68 (3+1) x 3 x M16
2)
Installation / Assembly
3.5 Connecting the stator winding
Max. Max.
connectable poss.
cross-section current
per terminal per
[mm ] terminal
2
[A]
3 x 95 450
3 x 185 710
according to DIN 46235.
2
1)
3-7