Frequently Asked Questions (FAQ) on Solar Power System

  • Will the inverter automatically wake up after the battery is below the lower cut-off and power (Grid/Solar)
    comes back ?

    Inverter will automatically wake up with the restoration of grid power or solar power.

  • How can installation problems be avoided?

    • Take care during transportation.
    • Check the electrical wirings.
    • Follow the installation procedure given in the manual.
  • How can a breakdown be avoided?

    • Please follow the preventive maintenance procedure given in our manual.
    • Take additional protection if it is a lightning-prone area.
  • Why should I seek a solar professional's help?

    Solar installation professional's can help you to determine the type and size of the system most suited for your needs.

  • Why does the electricity bill for some customer not decrease significantly when the solar panels are used?

    The solar energy available is less than the energy consumption.

  • What is the most economical use of solar energy?

    To avail maximum economic benefit it is always better to use solar power directly (day time ) for the load instead of storing energy in the battery and then using that for the load.

  • Can I add an additional panel later for extra power generation?

    Yes, only if the inverter, battery and other control systems are capable of handling it.

  • How much system maintenance is required?

    • Set up maintenance schedule Four times a year is recommended.
    • Fix a dedicated test kit with needed tools, test equipment and spare parts.
    • Keep documentation about the system in one accessible place.
  • Can your PCU be used as a pure solar inverter?

    Yes, In the remote villages where the grid power is at a distance, UPS can be used as a standalone power system.

  • When solar power is off, will the load immediately shift to grid power? ( to avoid battery being discharged )

    In case of no solar power, battery will continue to supply load till it remains with charge of about 50 %. Then load will switched to grid power. This is because the solar energy would have charged the battery full and that needs to be utilized on priority also. Also by discharging the battery to about 50%, It is ready to charge when the solar energy comes back.

  • How do cooling fans function?

    Cooling fans starts running when the internal temperature reaches 65-70 deg. c and turn off when the internal temperature returns to 55-60 deg. c

  • What are the protections provided to the inverter?

    Inverter is protected from Lightening, Over load, O/P short circuit, O/P Phase reversal, Battery over voltage, Battery under voltage, High and low voltage, Battery reversal etc.

  • During long vacation can I switch off the inverter?

    It is not required or advised. Keep the inverter charging. If you leave the battery uncharged for the long time it may drain off fully and battery life will suffer.

  • What do you mean by MPPT solar charger?

    A MPPT (Maximum power point tracking) charger is the charge controller with power electronic control device designed to control by microprocessor embedded with MPPT algorithm firmware to maximise the amount of current going into the battery from PV panels. A MPPT charge controller works as DC – DC converter by using knowhow of PV panel and battery characteristics to get the highest conversion power output from PV panels and safety charge the battery.

  • When solar power is fed, how much will be allocated to support the load and how much for battery charging?

    If there is load connected, solar power will go to load. In case of no load/ less load, the entire/ balance solar power will go to the battery. First priority is load and then the battery.

  • When should I add water to my batteries?

    How often you use and recharge the batteries will determine the frequency of watering . Also, using batteries in a hot climate will require more frequent watering. It is best to check your battery water level frequently and add distilled water when needed, Never add tap water to your battery. Batteries are provided with fluid level indicators which help in determining when and how much water needs to be added.

  • How many hours any solar lighting system can work?

    This depends on the storage battery capacity and the PV module rating. It can be extended to any number of hours, by adding more numbers of PV modules of battery etc.

  • When must I replace the rechargeable batteries?

    Under normal conditions the rechargeable batteries should last for several years. Afterwards you have to buy new ones from the supplier or dealer near to you.

  • How long will my solar system last?

    Solar systems last for about 20-30 years. Other electrical components such as inverters and batteries vary as per specifications. But it doesn't mean that after 25 years, your solar panels will stop producing electricity. They will still produce electricity but less than their ratings.

  • What is the annual output of a PV system?

    In most parts of India, a 1 kW system can generate 1250-1500 units (kWh) per year. So for a household usage of average 300 units per month (annual consumption of 3600 kWh), a 1 kW system can take care of roughly 1/3rd of annual energy requirement. Whereas, a 3 kW system can help you go off the grid!

  • What are the Normal capacities of Solar Water pump?

    Normal Solar Pumps are designed to lift water from Wells up to 200 feet depth and delivery of the pump is varies from 15,000 L per day to 75,000 L per day. Special designs are available on request.