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Substation Equipment: Relays
Relays
A relay is a low-powered device used to activate a high-powered device. Relays are used to trigger circuit breakers and other switches in substations and transmission and distribution systems.

Figure 1. Substation control panel relays
Figure 1. Substation control panel relays 		Figure 2. Relay and control panel
Figure 2. Relay and control panel

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