electrical:12v:alternator_charging_hvd
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electrical:12v:alternator_charging_hvd [2017/10/11 17:27] frater_secessus [Disconnecting alternator charging at a voltage setpoint] |
electrical:12v:alternator_charging_hvd [2019/04/10 15:12] frater_secessus [how it works] |
There are scenarios where one might want to prevent a [[electrical:12v:alternator|battery isolator]] from combining the house and chassis 12v systems: | There are scenarios where one might want to prevent a [[electrical:12v:alternator|battery isolator]] from combining the house and chassis 12v systems: |
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- the house battery needs less voltage than lead-acid (lithium, for example) | - the house battery could get overcharged by higher voltages than lead-acid (lithium, for example) |
- the combined circuit can feed higher-than-optimal voltages back from solar charge controller to the chassis' electronics. | - the combined circuit can feed higher-than-optimal voltages back from solar charge controller to the chassis' electronics. |
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[[electrical:12v:alternator|Isolator/relays/solenoids]], etc, use mechanical or electrical means to combine the chassis and house 12v systems. These mechanical or electrical means will require a small amount power to operate.((latching relays excepted)) | [[electrical:12v:alternator|Isolator/relays/solenoids]], etc, use mechanical or electrical means to combine the chassis and house 12v systems. These mechanical or electrical means will require a small amount power to operate.((latching relays excepted)) |
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If the device's own power source is disconnected it will turn off and 12v systems will be separate again.((again, latching relays excepted)) Using a High Voltage Disconnect to kill power to the device will stop the alternator from charging the house battery at a given voltage setpoint. | If the device's own power source is disconnected it will turn off and 12v systems will be separate again.((again, latching relays excepted)) Using a [[electrical:12v:hvd|High Voltage Disconnect]] to kill power to the device will stop the alternator from charging the house battery at a given voltage setpoint. |
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Shutting down the device will require different approaches, depending on where it gets the power to operate itself. | Shutting down the device will require different approaches, depending on where it gets the power to operate itself. |
electrical/12v/alternator_charging_hvd.txt ยท Last modified: 2022/07/31 00:33 by frater_secessus