Enclosed Switches and Safety Switches - Elektroskandia
Enclosed Switches and Safety Switches - Elektroskandia
Enclosed Switches and Safety Switches - Elektroskandia
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General information<br />
Placement<br />
recommendation<br />
The safety switch should be<br />
placed, if possible, close to<br />
motor or the equipment to<br />
be disconnected, in such a<br />
way that no tool or ladder is<br />
needed for disconnection.<br />
4<br />
Circuit Diagram for safety<br />
switch with auxiliary contact<br />
1<br />
2<br />
3<br />
4<br />
5<br />
0<br />
L1<br />
L2<br />
L3<br />
6<br />
7<br />
Installation of switches type BE, BW, KSE <strong>and</strong> safety switches BWS, KSA <strong>and</strong> LBAS<br />
Example of single line diagrams<br />
Switch <strong>Safety</strong> Motor Direct<br />
switch ~ start<br />
Y/D 6 <strong>Safety</strong> 6 Motor Ie AC23<br />
Motor switch ~ 16–63 A<br />
starter 6-poles Y/D-start<br />
3 <strong>Safety</strong> 3 1)<br />
switch<br />
Y/D 3-poles Ie AC23<br />
Motor Motor 100–630 A<br />
starter ~ Y/D-start<br />
3 <strong>Safety</strong> 3<br />
switch<br />
3-poles<br />
<strong>Safety</strong> Air<br />
switch conditioning<br />
Switch<br />
gear All<br />
or <strong>Safety</strong> Equipment kinds of<br />
installation switch electrical<br />
board equipment<br />
<strong>Safety</strong> Pump<br />
switch ~<br />
1) When two or more cables are supplying a motor or equipment <strong>and</strong> several safety<br />
switches are installed, a label has to be provided to inform about the necessity of<br />
switching off all safety switches before maintenance or repair.<br />
1. Fuses<br />
2. Motorstarter/contactor<br />
3. Overload protection relay<br />
4. <strong>Safety</strong> switch with auxiliary contact<br />
5. Motor<br />
6. Push button – start<br />
7. Push button – stop<br />
ABB Cewe
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