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  • wind solar hybrid charge controller
    The Latest Privilege Version MPPT Wind Solar Hybrid Charge Controller With Wifi/ GPRS Monitor

    > Remote Monitoring by 3 ways: PC monitoring; WIFI by mobile phone; GPRS by mobile phone. >This new wind solar hybrid controller is special design for 0-800w wind and 0-600w solar panels for wind >solar street light or home wind solar complementary system. >Appearance is elegant, operations are easy. Uses a custom digital LCD screen can see solar panel ,wind turbine, battery status and four key operation mode. The user to use simple and easy to use, popular and  >The inner circuit board of the controller is sprayed to prevent dust, moisture and static electricity, which can effectively prolong the controller' service life. >This controller can workable to Gel, Lead-acid, Ternary lithium battery and Lithium iron phosphate battery. >Lightning counter-attack, solar charger, over-voltage automatic braking, storage battery reverse connect and open protection, etc.

  • MPPT solar charge controller
    Mini MPPT Solar Charge Controller 10amp 20amp 30amp for solar power system

    Latest JN-MPPT-Mini MPPT solar charge controller ranges from 10amp 20amp 30amp with mini smart design for various use purpose . The battery system voltage is 12v 24v 48v auto recognize and max. PV input can be 150V. High charge efficiency is above 99.8% which is much cost-effective for project.

  • MPPT solar charge controller
    Latest MPPT Solar Charge Controller 30amp 40amp 50amp for solar power system

    Latest JN-MPPT-AL MPPT solar charge controller ranges from 30amp 40amp 50amp which are used for solar panel system . The battery system voltage is 12v 24v 48v auto recognize and max. PV input can be 150V. High charge efficiency is above 99.8% which is much cost-effective for project.

  • PWM Solar Charge Controller
    Lastest Design PWM Solar Charge Controller 100A 24V 48V 96V 110V 192V 220V 240V

    Latest JND-X series PWM solar charge controller is used in solar off-grid system (independent system), especially suitable for small off-grid solar power generation control system, which automatically adjusts charging and discharging. The battery charging process of the JND-X controller is optimized to extend battery life and improve system performance.

Common Failures of Solar System Controllers

2017-11-02


Off-grid solar system controller common faults are mainly divided into: can not be charged, the charging current is too small, the battery power consumption fast, the load can not work.Let's do some analysis about the specific problem as bellows:

Ⅰ.The solar panel can not charge the battery

1.To confirm whether the solar panel connection is correct, if the positive and negative is reversed or not.

2. If the solar panels are blocked.

3. If the solar panel specifications are correct,whether the open circuit voltage meets the requirements of the controller.

4. If the power of the solar panel exceed the controller's rated system.When the power is too large, may lead to solar intelligent controller burned.

5. If the battery is full, when the battery is full of controller,it will into the floating stage, the charging current will become very small.


Ⅱ.Battery power is not enough, will no electricity soon

1. If the battery capacity design is reasonable, too small for the capacity, the use of natural time is short.

2. Battery aging, the battery life is generally 2-3 years, the battery capacity attenuation is very large, need to regularly replace the battery.

3. If the battery have a short circuit during the installation process,Short-circuit damaged battery,the capacity is reduced too much.

4. The load power exceeds the design power.


Ⅲ.The load does not work

1. To confirm the operating voltage of the load is the same as the controller output voltage

2. If there is no short circuit and overload of the load

3. If the controller load output has not been turned off by manually

4. If the battery voltage is too low or too high lead to controller load protection

5. Whether the load output has a delay setting






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