In this paper, we investigate an ATS circuit to initiate an automatic switchover from utility power to generator power via numerous intermediate transfer stages that involve activation of the fuel valve, choke, and generator starter. . The circuit was requested by Mr. Hari and another dedicated reader of this blog
Requirement for 5kva LPG Generator
I am Hari from Indonesia. Thanks for your circuit ideas, I made a battery charger based on your design. Right now I am looking for an automatic transfer switch (ATS) for my portable generator.
It is a 5000VA LPG powered generator with electric starter. Buying a ready-made ATS is very expensive, I want to make it myself. Can you help me design the ATS? Right now I have to close the LPG valve manually to turn off my generator.
I plan to add an LPG solenoid valve so I can close/open the LPG supply electrically. And add a mechanical solenoid (push-pull, pull normally) to automate the choke.
The features of the ATS system that I need are:
detect the main power, under normal condition (when the main power is on), the ATS closes the
load connection and open the generator for load connection
when the main power is off, the ATS opens the main power to the load connection, but keeps the generator connection to the load open.
Then the system will activate the LPG solenoid valve (normally closed) to open the LPG supply to the engine and activate the mechanical solenoid valve (normally pulled) to push the choke handle to the START position
after that, the ATS will send a signal to the generator starter and start to automatically start the generator at maximum for 5 seconds. If the engine does not start within 5 seconds, the system will shut down for at least 5 seconds before attempting to restart the engine.
When the third attempt fails, the system activates an alarm (this may be a flashing light or sound).
if the starter succeeds and the generator runs, the system will wait 10 seconds then the system:
deactivate the mechanical solenoid so that it returns the choke handle to the CLOSE position.
after that, finally the system will close the connection between generator and load.
if main power is restored, the ATS will open the generator at the load connection, keep the generator running with no load for 2 minutes and shut down the generator by de-energizing the LPG solenoid valve.
a few seconds later, the system will open the generator to load the connection, it will close the connection between the main connection and the load connection
Second request
Sir in my area we have load shading problem. I want a circuit (system) to automatically turn on a self-starting gas generator (6 KVAR) when the light (mains power) goes out and the load should go to the generator by itself.
And when Light (Grid Supply) is back, automatically turn off the generator and the load should be connected to the gird Supply.
I know of a system using autochange and a relay. it is only to automatically turn off the generator and switch to the grid. The automatic changeover is used to switch from generator to grid and the relay is used only to switch off the generator.
Sir, please tell me a system so that we can make our job easy to switch on and off the generator. I think there can be such a system that when the light goes out, the load will automatically connect to the generator, and we use remote phone or mobile phone to turn on the generator.
In this paper, we investigate an ATS circuit to initiate an automatic switchover from utility power to generator power via numerous intermediate transfer stages that involve activation of the fuel valve, choke, and generator starter. . The circuit was requested by Mr. Hari and another dedicated reader of this blog
Requirement for 5kva LPG Generator
I am Hari from Indonesia. Thanks for your circuit ideas, I made a battery charger based on your design. Right now I am looking for an automatic transfer switch (ATS) for my portable generator.
It is a 5000VA LPG powered generator with electric starter. Buying a ready-made ATS is very expensive, I want to make it myself. Can you help me design the ATS? Right now I have to close the LPG valve manually to turn off my generator.
I plan to add an LPG solenoid valve so I can close/open the LPG supply electrically. And add a mechanical solenoid (push-pull, pull normally) to automate the choke.
The features of the ATS system that I need are:
detect the main power, under normal condition (when the main power is on), the ATS closes the
load connection and open the generator for load connection
when the main power is off, the ATS opens the main power to the load connection, but keeps the generator connection to the load open.
Then the system will activate the LPG solenoid valve (normally closed) to open the LPG supply to the engine and activate the mechanical solenoid valve (normally pulled) to push the choke handle to the START position
after that, the ATS will send a signal to the generator starter and start to automatically start the generator at maximum for 5 seconds. If the engine does not start within 5 seconds, the system will shut down for at least 5 seconds before attempting to restart the engine.
When the third attempt fails, the system activates an alarm (this may be a flashing light or sound).
if the starter succeeds and the generator runs, the system will wait 10 seconds then the system:
deactivate the mechanical solenoid so that it returns the choke handle to the CLOSE position.
after that, finally the system will close the connection between generator and load.
if main power is restored, the ATS will open the generator at the load connection, keep the generator running with no load for 2 minutes and shut down the generator by de-energizing the LPG solenoid valve.
a few seconds later, the system will open the generator to load the connection, it will close the connection between the main connection and the load connection
Second request
Sir in my area we have load shading problem. I want a circuit (system) to automatically turn on a self-starting gas generator (6 KVAR) when the light (mains power) goes out and the load should go to the generator by itself.
And when Light (Grid Supply) is back, automatically turn off the generator and the load should be connected to the gird Supply.
I know of a system using autochange and a relay. it is only to automatically turn off the generator and switch to the grid. The automatic changeover is used to switch from generator to grid and the relay is used only to switch off the generator.
Sir, please tell me a system so that we can make our job easy to switch on and off the generator. I think there can be such a system that when the light goes out, the load will automatically connect to the generator, and we use remote phone or mobile phone to turn on the generator.
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