This manual must be read thoroughly and always - esco ...
This manual must be read thoroughly and always - esco ...
This manual must be read thoroughly and always - esco ...
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Product Manual <strong>esco</strong>start DS3 21<br />
5.1.6 Inside delta installation, non-bypassed<br />
KM1 F1<br />
KM1 Main contactor<br />
F1 Semiconductor fuses (optional)<br />
04483.C<br />
1/L1<br />
3/L2<br />
5/L3<br />
Product Manual <strong>esco</strong>start DS3 21<br />
2/T1<br />
4/T2<br />
6/T3<br />
13<br />
14<br />
KM1<br />
U1(1) U2(4)<br />
M<br />
V1(2) V2(5)<br />
3ph.<br />
3<br />
W1(3) W2(6)<br />
CAUTION<br />
When connecting the <strong>esco</strong>start DS3 in inside delta configuration, <strong>always</strong> install a main contactor or<br />
shunt trip circuit breaker.<br />
5.2 Bypass Contactor<br />
<strong>esco</strong>start DS3 soft starters with model num<strong>be</strong>rs <strong>esco</strong>start DS3 23 ~ <strong>esco</strong>start DS3 220 are internally<br />
bypassed <strong>and</strong> do not require an external bypass contactor.<br />
<strong>esco</strong>start DS3 soft starters with model num<strong>be</strong>rs <strong>esco</strong>start DS3 255N ~ <strong>esco</strong>start DS3 1600N are not internally<br />
bypassed <strong>and</strong> may <strong>be</strong> installed with an external bypass contactor. Select a contactor with an AC1 rating<br />
greater than or equal to the full load current rating of the connected motor.<br />
5.3 Main Contactor<br />
A main contactor <strong>must</strong> <strong>be</strong> installed if the <strong>esco</strong>start DS3 is connected to the motor in inside delta format <strong>and</strong> is<br />
optional for in-line connection. Select a contactor with an AC3 rating greater than or equal to the full load<br />
current rating of the connected motor.<br />
5.4 Circuit Breaker<br />
A shunt trip circuit breaker may <strong>be</strong> used instead of a main contactor to isolate the motor circuit in the event of<br />
a soft starter trip. The shunt trip mechanism <strong>must</strong> <strong>be</strong> powered from the supply side of the circuit breaker or<br />
from a separate control supply.<br />
5.5 Power Factor Correction<br />
If power factor correction is used, a dedicated contactor should <strong>be</strong> used to switch in the capacitors.<br />
CAUTION<br />
Power factor correction capacitors <strong>must</strong> <strong>be</strong> connected to the input side of the soft starter.<br />
Connecting power factor correction capacitors to the output side will damage the soft starter.
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