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Open Roads Forum  >  Tech Issues

 > Disconnect load before stopping generator?

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pianotuna

Regina, SK, Canada

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Joined: 12/18/2004

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Posted: 07/12/19 01:04pm Link  |  Quote  |  Print  |  Notify Moderator

Since MrWizard has the Champion 3400, he does not need to disconnect loads for spin down. The Champion does it for him.

4x4van wrote:

MrWizard wrote:

4x4van wrote:

The idea that load must be removed prior to starting/stopping a generator seems to fly in the face of AGS systems used to keep an RV cool (for pets, for example) while the owner is not there.


NO..it doesn't ... think about it

the ATS in the RV does not connect the RV to generator until after the the generator has started running, there is NO load on the RV generator until the ATS closes, then the A/C can come on
And when the generator stops?



Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

MrWizard

Traveling

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Posted: 07/12/19 06:24pm Link  |  Quote  |  Print  |  Notify Moderator

Only thing I can think of
Is that there was a temperature control connection for the AGS right that says we need the a/C start the genny

Doesn't that same control keep the genny running until a low temp setting has been reached ? And maybe even for a specific time duration
Which means the a/C would either be off, or at a minimum blower load,
Not running the compressor,
Maybe somebody here can give us an answer


Radiate The Happy
....

Connected using Verizon and AT&T
1997 F53 Bounder 36s


Matt_Colie

Southeast Michigan

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Posted: 07/13/19 12:16pm Link  |  Quote  |  Print  |  Notify Moderator

The old Onans were famous for blowing out the bridge for the field when shut down with much load on. That thing was not easy to get at most times.

Many of the less primitive units still have trouble because the fancy output voltage regulation system doesn't know it is being shut down and the system kills itself trying to hold the output up.

Matt


Matt & Mary Colie
A sailor, his bride and their black dogs going to see some dry places that have Geocaches in a coach made the year we married.


MEXICOWANDERER

las peƱas, michoacan, mexico

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Posted: 07/13/19 12:48pm Link  |  Quote  |  Print  |  Notify Moderator

Field forcing is a generator killer. My little KATO has six 1000PIV 150 amp rated rectifiers which is overkill times 4 the maximum possible field primary exciter potential. But the Delco H9000 regulator ramps down softly as it approaches 55 Hz. No free lunches it is still bad for the loads when an uncontrolled spin-down occurs.

I still unload the generator before shutdown and it has a turbo prtection 5-minute timer borrowed from a White Freighliner chassis.

joebedford

Finally back home in the north

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Posted: 07/13/19 02:33pm Link  |  Quote  |  Print  |  Notify Moderator

"computer controlling the digital inverter"

How retro.

hotpepperkid

Kingman AZ

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Posted: 07/13/19 07:26pm Link  |  Quote  |  Print  |  Notify Moderator

We had a saying at the phone Co. graceful and ungraceful. Disconnect the power before pulling a card or just pull out a card under power. I built a box with 30A twist lock and 50A socket with a switch and V/A meter so I can disconnect the load before turning on or off the gen.


2000 Ford F-350 SRW 4X4 PSD Grand Designs Reflection 295RL 5th wheel 50 gal X-ferflow in the bed tank. Banks big exhaust and Stinger kit.

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