Soft starters DS and DM - Moeller Electric Parts
Soft starters DS and DM - Moeller Electric Parts
Soft starters DS and DM - Moeller Electric Parts
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<strong>DM</strong>4 soft <strong>starters</strong><br />
14/22<br />
In-line/in-delta<br />
U1 V1 W1<br />
W2 U2 V2<br />
Engineering<br />
Connection examples<br />
<strong>DM</strong>4<br />
I<br />
I<br />
M<br />
3 ~<br />
I<br />
55 kW<br />
400 V<br />
NZMB2-S125<br />
DILM115<br />
100 A<br />
<strong>DM</strong>4-340-55K<br />
(105 A)<br />
As a rule, soft <strong>starters</strong> are connected directly in series with the motor (in line). The<br />
<strong>DM</strong>4 soft <strong>starters</strong> also allow operation in delta configuration.<br />
Advantage:<br />
• This circuit is cheaper because the soft starter has to be laid out for only 58 % of<br />
the motor full load current.<br />
NZMB2-A125<br />
DILM115<br />
400 / 690 V 100 / 59 A<br />
S1 55 kW cos ϕ 0.86<br />
1410 rpm<br />
50 Hz<br />
<strong>Moeller</strong> HPL0211-2007/2008<br />
In-Line<br />
U<br />
In-Delta<br />
LN<br />
400 V<br />
100 A<br />
3<br />
<strong>DM</strong>4-340-30K<br />
(59 A)<br />
I<br />
I<br />
I<br />
M<br />
3 ~<br />
http://catalog.moeller.net<br />
U1 V1 W1<br />
W2 U2 V2<br />
55 kW<br />
400 V<br />
Disadvantages over in-line connection:<br />
• The motor must be connected with six conductors, similar to the star-delta<br />
connection.<br />
• The <strong>DM</strong>4’s overload protection is active only in one line. An additional motor<br />
protection must be installed in the parallel line or in the incomer.<br />
For <strong>Moeller</strong> <strong>Electric</strong> Sales <strong>and</strong> Support call KMparts.com (866) 595-9616
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