how to connect automatic changeover switch for generator

00:00 Introduction
02:18 Component explained
04:36 Main contactor control circuit
13:07 Generator contactor control circuit
21:42 Generator signal cable circuit
24:40 Contactor assembly
25:30 Main contactor control wiring
33:54 Generator contactor control wiring
37:57 Notes on main and generator control circuit
39:31 Test, connection changeover switch to generator

An automatic changeover switch is a set of components connected in a simple control circuit to control two (2) sources of power supplying the same load at a time.
Automatic changeover switches are used in situations where you want a second source of power to come in after the main or utility supply has gone, the second source could be a Generator or solar
In case the second source of power is Generator, when the power shuts down the changeover starts the generator automatically and also connects the load to the generator. when the main power comes back the changeover switch changes the position from the generator contactor to the main contactor and takes the generator into cooldown and then shut off the engine.

An automatic changeover switch can be either three (3) phases or a single (1)
No matter the rating, size and phase control circuit remains the same.

The generator automatic changeover switch comprises two (2) parts
Namely
Main component part and generator component part

MAIN COMPONENT includes
Timer ondelay
Relay(DC or AC)
Phase failure (single or three phases depends on the power)
The contactor ( with mechanical interlock)
Control circuit breaker

GENERATOR COMPONENTS includes
Timer ondelay
Relay(DC or AC)
The contactor ( with mechanical interlock)
Control circuit breaker

What you need for a changeover switch(VIDEOS)
1) Phase monitor    • Explaining phase monitor|phase failur...      • HOW TO WIRE|CONNECT PHASE MONITOR|PHA...  
2)Relay    • Relay switch explained  
3)Timer    • How on delay and off delay timer work...  
4)Contactor    • how does a magnetic contactor work  

Manual change over video
   • Manual changeover switch  

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CONTACTOR SELFHOLDING VIDEO    • contactor self holding with push butt...  

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