Low Cost 3kw Off-grid Solar Energy System For School House Water Heating

Low Cost 3kw Off-grid Solar Energy System For School House Water Heating

1. Solar panel:

800W, A Grade cell, with water proof junction box, and cables.
Optional: Polycrystalline, monocrystalline

2. Controller: 48V/50A

1) Over charged protection
2) Over discharged protection
3) Lighting protection
4) Backflow protection
5) With detailed indicating function

3. Inverter capacity: 1000W

1) Pure sine wave inverter
2) Overload protection
3) Short circuit protection

4. Battery:

12V/100AH*4PCS;
Deep cycle maintenance-free lead-acid battery
Output voltage: 110-60HZ/220V-50HZ

How does it work?

The term off-grid refers to not being connected to a grid, mainly used in terms of not being connected to the main or national electrical grid. In electricity, off-grid can be stand-alone systems (SHS) or mini-grids typically to provide a smaller community with electricity.

System chargeing time:

8-10 hours fully charge the battery by solar panel.
6-7 hours fully charge the battery by AC adaptor

System lighting time:

1bulb,15hours lighting time after the battery is fuuly charged
2bulb,8hours lighting time after the battery is fully charged

Introduction to PV off-grid system

1. Off-grid photovoltaic power generation

Off-grid photovoltaic power generation also named individual photovoltaic power generation, photovoltaic grid can covert the solar energy into electrical energy when it is sun , it can providing electricity through the charge and discharge controller of the solar energy ,charging the storage battery as well ; when there is no sun ,the storage battery can provide electricity to the DC load and to the stand-alone inverters directly , then the DC become AC through the stand-alone inverters, then the electricity is available to the AC load.

2. The advantage of PV off-grid

(1) Easing install and operation, economic and inflexible
(2)Generating and providing electricity separately, the electricity-providing system is reliable; it is easy to maintenance locally
(3)This system drived by the green energy, it has the advantages of energy conservation and emission reduction, environmental-friendly. It does not consume other kind of energy.
(4) Solving the problems of no electricity and lack of electricity and bad quality of electricity-providing efficiently.

3. The applicable area of PV off-grid generate system

It is applicable to the area of low capacitance and great separation. such as isolated mountain area , no electricity covered area , island , communication foundation and street light.

4. The formation of the PV off-grid

Solar panel: covert solar energy into electrical energy.
Charge controller: prevent storage battery from over charge , over discharge , counter charge , over current and over loading
Inverter: transit the low-voltage DC into normal AC
Connector: making sure the line connect steadily with every device

Low Cost 3kw Off-grid Solar Energy System For School House Water Heating

Modern factories and domestic first-class production equipment, with an annual capacity of 2 million kVA

a. Packing: Our rechargeable battery packed with wooden pallet or wooden box.



b. Delivery time: 15 working days for rechargeable battery.

Low Cost 3kw Off-grid Solar Energy System For School House Water Heating