ssw03_plus_series
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6<br />
DETAILED PARAMETER DESCRIPTION<br />
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For the delta inside connection the Soft-Starter SSW-03 is installed<br />
separately in each winding of the motor through 6 cables. In<br />
this type of connection the circulating current of the Soft-Starter<br />
is only the 58% from the nominal current of the motor. This characteristic<br />
changes the relation between the motor nominal current<br />
and the nominal current of the Soft-Starter. To know, in this<br />
connection, the Soft-Starter can be specified as:<br />
- 1.50 times the nominal current of the motor, during the start;<br />
- 1.73 times the nominal current of the motor, in full voltage.<br />
During the start the relation is lesser because had the common<br />
characteristics to this type of connection (inside of the Delta) the<br />
Thyristor of the Soft-Starter needstoleadthesamecurrentin alesser<br />
cycle time, raising with this thelosses in the Thyristor during the start.<br />
The standard connection requires less output wiring. The connection<br />
within the motor delta connection requires twice the<br />
standard connection, but for short distances, it is a cheaper<br />
option for Soft-Starter + motor + wiring.<br />
Standard connection with three cables: P28=OFF, Soft-<br />
Starter line current equal to motor current.<br />
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U V W<br />
2/V1<br />
U V W<br />
5/V2<br />
4/U2 6/W2<br />
4/U2<br />
2/V1<br />
1/U1<br />
6/W2<br />
5/V2<br />
1/U1<br />
3/W1<br />
3/W1<br />
Connection within the Motor Delta Connection with six<br />
cables: P28=ON, Soft-Starter line current approximately 58%<br />
of the motor current.<br />
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4/U2<br />
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V<br />
2/V1<br />
U<br />
1/U1<br />
72<br />
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6/W2<br />
3/W1<br />
W<br />
T<br />
5/V2<br />
T<br />
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