Current Relay Wiring Diagram

Terminals 4 and 6 are sometimes referred to as dummy terminals and are simply used for wire connections.

Current relay wiring diagram. High current capacity wiring and switches cost more than lower current capacity versions so by using relays the requirement for the more expensive components is minimised. The back emf voltage generated across the start winding causes a small current to flow in the start winding and potential relay coil. This is usually the higher of the two terminals on the relay. Also when wiring capacitors to a motor using a current relay always wire the starting capacitor in series with the start winding.

Example relay wiring schemes. Home know your potential starting relays. Remember when a start capacitor is being used terminals 2 and 3 may come into play. Figure 2 rsir motor diagram push on current relay.

See how theyre triggered and how current flows though them. Presented using advanced software cg animation technology to help you understand. During this leading event of the asian hvacr world huayi had the opportunity to present its latest innovations in compressors for the commercial and domestic refrigeration markets focusing on energy efficiency and r290. Minals is required see figure 3.

Huayi group participated at china refrigeration exhibition held this year in the shanghai new intl expo centre from april 9th to 11th. If a two terminal relay is used without a start capacitor then figure 1 current relay cut away. This should help technicians wire a current relay to a compressors motor. Service maintenance hvac residential market air.

The square relay pinout shows how the relay socket is configured for wiring. The following diagrams show some common relay wiring schemes that use 4 pin iso mini relays. The neutral wire must be attached to the relay so that it is in series with the relay coil. The role of starter relay is to control the high current with low current protect the ignition switch and reduce the line drop of the starter solenoid switch.

Relay attached to furnace blower motor common wire. If the current draw is less than 40a loop the com mon wire at least twice or more times around the bracket ensuring that the common wire passes between the bracket and the relay housing. Follow the relays wiring schematic when connecting the wires to the relay one of the relays terminals goes to ground. This pinout image is only a 2 pole diagram for room on the page purposes but you can get the picture here with this one since a 3 pole will just have 1 more set of contacts.

Part of our wiring diagram and electronic series. As in the diagram a wire is run from a 12 volt power source to the switch in the cab and out to the relay placing a fuse at the source of the power.