Intoduction to Relay & Contector

Define what is contector

• an electrically-controlled switch used for switching an electrical power circuit

• an electromagnetically actuated switches

• an electromagnetically to detect, totalize, and indicate a sequence of events

• a switch that are used to start or stop a machine or other device at preset or delayed intervals.

This symbol represent

• Electromechanical Timer

• Relay

• Contector

• Electromechanical Counter

Define what is Electromechanical Timer

• A relay used to switching an electrical power circuit.

• A relay used to detect, totalize, and indicate a sequence of events

• A relay used to start or stop a machine or other device at preset or delayed intervals

• A relay used to control electric motors, lighting, heating, capacitor banks, and other electrical loads.

This timing diagram represent

• On-Delay

• Off- Delay

How many pulse/input need before output will on