Power Brown Out

[Industrial Toys]

Of course, I have not one but two, UNINSTALLED! One for main panel in garage and another for the house. Another should get at that project.

 

[radios1]

I installed one Generac Generator and Transfer switch for a customer at his cottage years ago. I got a call one day about the transfer switch acting crazy until it destroyed itself and that apparently was during a brownout.

that's very weird, it should be controlled by 12 VDC from the voltage sensing circuitry. battery powered!.. it sounds like a very poorly designed switch that uses a 120 VAC coil to sense the voltage, and switch to the generator during a brownout!..

 

[Industrial Toys]

IF my ASCO switch had been setup to start my generator, I'm curious how it would have handled this brownout. The ASCO switch will close a contact on power failure to start the genny and the genny power will trip the transfer.

 

[radios1]

IF my ASCO switch had been setup to start my generator, I'm curious how it would have handled this brownout. The ASCO switch will close a contact on power failure to start the genny and the genny power will trip the transfer.

it's possibly better, but I like a 1 minute delay before going to generator, and a 1 minute delay before going back to line power. things like air conditioners and refrigerators don't like losing power, then power being restored quickly!.. the thermal overload would be constantly tripping until the high side pressure lowers, and the compressor can start normally!.. btdt. I made a nice transfer switch for a motor home that only had a manual transfer..

 

[Industrial Toys]

Mine has adjustable delays, but I think I have it set to return to Utility after five minutes or so. Sometimes the power comes back on (as they try the fuse) and kicks out again.

Actually one should be happy they have single and not three phase power. A customer of mine with three phase is always loosing a phase and destroying a lot of motors in the process. They have a fancy new generator and ASCO switch, but not everything at the facility is on Emergency Power. I'm sure that fancy new switch cuts off if one phase if out.

 

[radios1]

Mine has adjustable delays, but I think I have it set to return to Utility after five minutes or so. Sometimes the power comes back on (as they try the fuse) and kicks out again.

Actually one should be happy they have single and not three phase power. A customer of mine with three phase is always loosing a phase and destroying a lot of motors in the process. They have a fancy new generator and ASCO switch, but not everything at the facility is on Emergency Power. I'm sure that fancy new switch cuts off if one phase if out.

they can use something like this. DiversiTech DTP-3 Digital 3-Phase Motor Protector: Voltage Monitoring Relays: Amazon.com: Industrial & Scientific

 

[Industrial Toys]

Interesting, thanks. I will pass it on to the manager.

 

[3Ts]

it's possibly better, but I like a 1 minute delay before going to generator, and a 1 minute delay before going back to line power. things like air conditioners and refrigerators don't like losing power, then power being restored quickly!.. the thermal overload would be constantly tripping until the high side pressure lowers, and the compressor can start normally!.. btdt. I made a nice transfer switch for a motor home that only had a manual transfer..

I had this problem when my generator was first installed. Sometimes the generator would start up and run for no apparent reason. Other times, it would start up and shut off, start up and shut off, etc. One day we came back from shopping and the house was hot because the AC wasn't running. Called the AC guys, everything checked out fine, just as they were ready to leave and still had their stuff hooked up, the generator started. Finally figured out the voltage sensing controls on the generator were not set as they should be. Had the generator folks come over they made some changes and put in a 2 minute delay. Everything works fine now.