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Protection Mode Of Solar Controller
- Oct 23, 2017 -

The solar controller can collect the current working status of the PV system in real time, obtain the working information of the PV station at any time, and accumulate the historical data of the PV station in detail. To evaluate the reliability of the PV system design and the reliability of the quality of the inspection system An accurate and adequate basis. What are the solar controller protection modes?

Mode one, direct charge protection point voltage

Direct charge also called emergency charge, are fast charge, are generally in the battery voltage is low when the use of high current and relatively high voltage on the battery charge, but there is a control point, also known as the protection point.

Direct charge protection point voltage is generally "overcharge protection point" voltage, charging the battery terminal voltage can not be higher than this protection point, otherwise it will cause overcharge, the battery is damaged.

Mode two, Jun charge control point voltage

Direct charge after the end of the battery will be charged and discharged controller for some time, so that the voltage naturally fall, when the fall to the "recovery voltage" value, will enter the state are charged.

Are charged, that is, "balanced charge." Are charged time should not be too long, usually for a few minutes to ten minutes, the time set too long but harmful. For a small system equipped with two batteries, it is not meaningful. Therefore, the solar street light controller is generally not filled, only two stages.

Mode three, charge control point voltage

The battery is also set aside for a period of time, so that the end voltage naturally falling, when the drop to the maintenance voltage "point, it entered the float state. Similar to the small current charging, the battery voltage is low to charge On the point, a low to charge a little, an share to, so as to keep the battery temperature continues to rise, which is very good for the battery.

Mode four, over discharge protection termination voltage

Battery discharge can not be less than the national standard. Although the battery manufacturers also have their own protection parameters, but ultimately to move closer to the national standard.

For safety reasons, the general 12V battery over the protection point voltage plus 0.3v as a temperature compensation or control circuit zero drift correction, so 12V battery over discharge protection voltage is: 11.10v, then the 24V system over discharge The protection point voltage is 22.20V.