Sun 31 May 2009
How can i stop the ac power from the electric grid from comming i nto my standbuy power supply?
Posted by admin under Engineering
handyman43 asked:
CAN THIS BE DONE WITH A DIODE WITHOUT USING A RECTIFER I WOULD PREFER NOT TO CHANGE THE AC VOLTAGE
CAN THIS BE DONE WITH A DIODE WITHOUT USING A RECTIFER I WOULD PREFER NOT TO CHANGE THE AC VOLTAGE
a disconnect switch?
The surest way is to isolate power from the elecric grid by means of a 3-pole double throw switch. A diode will work if combined with relays such as one used in an ASCO automatic transfer switch.
Your question is confusing on many levels.
What kind of “standby power supply” are you talking about?
A “power supply” usually means a device that turns AC voltage into DC Voltage.
Also, I’m not sure what you want to do with a diode. By the way, a rectifier is made out of diodes. It’s the rectifier that actually converts the AC into DC.
Can you be a little more specific in what you want to do?
I am assuming you are not using a grid-connected solar, wind or hydro powered standby source.
If your standby power supply is to serve the same appliances that the grid does, you need a transfer switch to switch the load from the grid to your standby system. The switch wants to be arranged so it it impossible to have both the grid and the standby system serving the load at the same time.