Electric Switch Mechanisms - Magnetrol International
Electric Switch Mechanisms - Magnetrol International
Electric Switch Mechanisms - Magnetrol International
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3.2.3 Three Stage Displacer<br />
Load<br />
Load<br />
1. Rising level closes contacts 5 & 6 and 2 & 3, see Figure 15.<br />
2. Falling level closes contacts 4 & 5 and 1 & 2.<br />
3. Double pole action is obtained by simultaneous operation<br />
of the right and left side single pole switches.<br />
Load<br />
Load<br />
Load<br />
Load<br />
Upper stage operates<br />
upper switch mechanism<br />
Internal Circuit<br />
(Left <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Middle stage operates<br />
middle switch mechanism<br />
Internal Circuit<br />
(Left <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Lower stage operates<br />
lower switch mechanism<br />
Internal Circuit<br />
(Left <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Internal Circuit<br />
(Right <strong>Switch</strong>)<br />
12 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
4<br />
5<br />
6<br />
4<br />
5<br />
6<br />
4<br />
5<br />
6<br />
Figure 15<br />
Three Stage Displacer<br />
1<br />
2<br />
3<br />
1<br />
2<br />
3<br />
1<br />
2<br />
3<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Internal Circuit<br />
(Right <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Internal Circuit<br />
(Right <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Load<br />
Load<br />
Load<br />
Load<br />
Load<br />
Load
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