Differential Relay Wiring Diagram. A plate in the relay box. A dc schematic diagram is frequently used to represent the logic of electrical control systems switching or relaying including a number of switches or contacts time delay and latching type relays push buttons limit switches lights and controlled devices like motor starters and solenoid operated valves.
If left uncorrected this phase difference would. Relay symbols and electromagnets. The relay are switching electrical devices activated by signals.
A plate in the relay box.
Particular attention should be paid to the correct wiring and value of any external resistors indicated on the wiring diagramrelay rating information. How to read the wiring diagrams how to read configuration diagrams a 3. 1 shows a typical differen tial relay connection diagram. With the relay connected as shown in the schematic diagram of figure 9a an external fault causes cur rents to flow in the air gap restraint transformers of the differential unit.