3kw Off Grid Solar Power System

3000w 48vdc 220vac 380vac Off Grid Solar System Whole Set Residential

Description
Off grid solar systems are widely used in areas without electricity, power instability, islands, communication base stations and inconvenient wiring for street lights or monitoring systems. The photovoltaic array converts solar energy into electrical energy when there is light, and stores the electricity for the battery pack through the solar controller; when there is no light, the battery pack discharges through the solar controller to supply power to the DC load, and can also reverse the discharge into AC power through the inverter to supply power to the AC load.

Parameters

Solar panel features

• Good weak light performance (morning, evening, cloudy day) verified by authoritative third party test

• With high efficiency polycrystalline / monocrystalline silicon chip, power generation is more stable and low attenuation

• The use of anti ash and easy to clean coated glass has high power generation efficiency in the later stage

Solar inverter features

• Multiple protection functions such as undervoltage, overload, over current, high temperature, high voltage and short circuit ensure the safety of products

• Intelligent LCD output voltage, frequency, battery capacity, fault, overload, load, etc

• The process of combination of patch and module has more stable performance and can be started for 24 hours

Solar charge controller features

• LCD graphic display of photovoltaic power generation data, simulation of power generation process

• A variety of load working modes can be set to adapt to different working situations

• Intelligent battery management function to extend battery life

• Advanced MPPT tracking algorithm, tracking efficiency as high as 99%, compared with the ordinary PWM algorithm, power generation efficiency can be improved by about 20%

Solar batteries features

• The performance of deep discharge cycle is excellent and the reliability of the system is improved effectively
• Excellent recovery performance after over discharge

• Low water loss rate

• Super long service life

Solar panel bracket features

• The whole system is made of aluminum alloy, stainless steel accessories and hot-dip galvanized steel, which has outstanding anti-corrosion and anti rust ability for outdoor use
• Less installation parts, high pre installation in the factory, no cutting or drilling on site, no welding, greatly reducing the installation time on site
• High density structure design makes more rational use of space

PV combiner box features

• Anti counter current protection, no sun at night, battery power to solar panels counter current, protect solar panels from damage
• The special high voltage lightning protection device for photovoltaic greatly improves the safety performance of the whole system
• High voltage fuse protection and counterattack protection are added to single channel photovoltaic array

Solar cable features

• It greatly improves the conductivity and reduces the line loss
• Dedicated PV adapter, waterproof grade IP67
• Special photovoltaic cable, after special irradiation treatment, can be used outdoors for more than 25 years

Main advantages:

• Type: Off Grid Solar System

• Five protection functions of under voltage/short circuit/over voltage/over load/over temperature

• LCD intelligent display

• Automatic conversion, automatic recovery and unattended functions

• Factory direct sales at affordable prices

• Full installation technical guidance

• 3 years warranty, lifetime after-sales service

Features

• Type: Off Grid Solar System

• High efficiency MPPT charging mode, three-stage charging control

• Perfect system protection functions include: overcharge, over discharge, overload, short circuit, anti-reverse connection, lightning strike, etc.

• Use imported IGBT/MOSFET as electronic switch, without any mechanical switch

• LCD liquid crystal display system parameters of the current operating status

• New SOC calculation, accurate display of real-time battery capacity

Design of Off Grid Solar System

• According to the load size and type, single-phase 220V or three-phase 380V, the rated power of off grid inverter is determined.
• According to the discharge time of the energy storage battery required by the load, determine the size of the energy storage battery (such as how many kwh to store).
• According to the load power consumption (how many kilowatt hours of electricity) and the local sunshine situation, select the board with high power.
• The size of charge controller is selected according to the size of photovoltaic panel and battery voltage.
• Supports, cables, etc. (installed on the roof or floor).

Application

• Type: Off Grid Solar System

• Transportation field such as beacon light, traffic/railway signal light, traffic warning/sign light, street light, high altitude obstacle light, highway/railway wireless phone booth, unattended road shift power supply, etc.

• Communication/Communication field: solar unattended microwave relay station, fiber optic cable maintenance station, broadcasting/communication/paging power supply system; rural carrier phone PV system, small communication machine, soldier GPS power supply, etc.

• Oil, marine, meteorological field: solar power system for cathodic protection of oil pipelines and reservoir gates, living and emergency power supply for oil drilling platforms, marine detection equipment, meteorological/hydrological observation equipment, etc.

• Solar architecture combines solar power generation with building materials, making the future of large buildings to achieve power self-sufficiency, is a major future development direction.

Together with our customers and suppliers, we have been partners in solar battery industry for 12 years and have supplied over 20 kinds of patent solar systems for home and abroad.

In 2008, we established FairylandSolar^TM and won our first solar home system project--“GoldSun” project for whole Shaanxi province which was a famous big project appointed by Chinese government. During 3 years installation, we were always moved a lot when people showed true smile when lighting their home. They should carry a heavy battery and walk hours home, so aftersales is so difficult that pushes us to supply high quality products with long lifetime. We invested gel battery production line with a 50 staff team who has 20 years production experience for AGM battery. For the enough good quality and reasonable price, we becomes a stable supplier for solar projects, OEM for them.

In 2018, as the rapid development of lithium battery, we established CASISOLAR^TM that started a team only for packing lithium batteries. During the past 3years, we found the wide difference between price and products. As government promotes “ giving retied battery a second life” , some make a profit in troubled situation, providing retired cells for solar making great lost in a long term or even has personal safety hazard.

So in CASISOLAR, we don’t think it is 100% safe to use retired battery cells. We only accept cells at Great A with 5 years more warranty. We didn’t grow up quickly but we harvest every customer we have cooperated. We always enjoy and appreciate troubles met during every cooperation, and give great enthusiasm and confidence.

Our mission is to provide solar energy at low cost over a long lifetime.