20KW home solar system energy storage power battery
SANDI Professional designed for solar power system
Large-scale off-grid solar power system can satisfy all the using of electricity for a family life. Nowadays, in the world wide, more and more countries use this type of generating system in remote village without electricity, telecommunication, pasture area, scenic resort, villas, islands, armies, school, hospital, private houses etc.
PV Off-grid Solar Power System
PV Off-grid Solar power generation system including solar panel array, solar charge controller, storage battery, Off-grid inverter, etc. In the sunshine, the solar panel convert the solar energy to DC power and charge the battery group by the charge controller. Then the off grid inverter convert the DC power into AC power for power supply the AC load.
The below solar system,solar kit and solar product available:
1.solar off-grid system 10KW-500KW.
2.solar system can be designed according to different applications including houses,buildings,company,factory,farm,water pump,lighting.The system is designed automatically switch to grid power when battery power off ,then grid power will charge battery.When grid power not availabel,can switch to run on desiel generator so as to continue water pump irrigating or other application.
our company have produced soalar inverter, solar controller and PV combiner box for many years, With reliable quality and very competitive prices, we have exported products to USA, South America, Europe, India and Southeast Asia,and gotten good feedbacks from our overseas customers.
Our products from raw materials to finished products every process, every aspect of all strictly by professionals in order to ensure product quality. Also we can provide the certificate to ensure the quality of our productions, mainly CE, IEC, TUV ISO.
1)High reliability with guaranteed +/-3% output power tolerance
2)The modules can withstand high wind-pressure, snow loads and extreme temperatures
3) Bypass diodes to minimize power loss with shading
4) High and stable conversion efficiency to ensure the highest quality
Quality and Safety:
* Industry leading power output warranty, 25 year 80%, 10 year 90% power warranty
and 5-year power warranty of materials and workmanship
*CE, TUV, ETL, ISO9001:2008 (Quality Management system) certified factory Product Quality warranty & products Liability Insurance to guarantee and user' benefits.
PV Combiner box with lightning protection
Solar charge controller
1) Adopt PWM multistep sequential limiting current charge method, auto control multiple solar array connection or shut off orderly according to the battery group voltage change tendency.
2) Adopt multiple-circuit charging-control circuit and individual killer switch on each circuit.
3) With auto protection function of over charge, electronic short circuit, anti-reverse protection. Prevent the battery group reverse charging to the solar panel array at night.
4) LCD screen shows the working status of solar panels, battery and controller. ( the voltage, current, power of solar energy panel and battery)
5) Power switch driving circuit is completely isolated from sampling circuit. The control signals is transmitted by opto isolation, with super-high disturbence rejection and stability.
6) Power switch driving circuit is completely isolated from sampling circuit. The control signals is transmitted by opto isolation, with super-high disturbence rejection and stability.
7) There are lightning protection device inside the controller. Limit instantaneous overvoltage which entered into solar panels under a level which the system can withstand; or unload the strong lightning current to the ground. To protect the equipment from lightning surge.
8) Adopts the industrial-grade chips for all control, which can work under the cold, hot, humid conditions.
* Applicable for outdoor PV systems;
* Each PV array attached to DC fuse protection and anti-reverse protection optional;
* Wide DC voltage input range with maximum open-circuit voltage up to 1000V;
* High voltage lightning protection (SPD) special for PV;
* PG Cable glands input, convenient and safe system wiring;
* PV special high voltage circuit breaker control output;
* Protection class IP65 for outdoor use;
* Output Waterproof terminals;
Lithium Battery Storage Rechargeable LifePO4 Battery
This product is composed of high quality lithium iron phosphate core (series-parallel connection) and advanced BMS management system. It adopts master-slave mode, which is convenient for monitoring and controlling the input and output system. The charging and discharging are independent, it can control the charging current of the AC charger and solar controller according to the battery temperature, voltage and SOC to better protect the battery cells from overcharging, overheating and discharging. It has high reliability and long life, products developed for applications such as solar energy storage, industrial and commercial energy storage, household energy storage, charging piles, data room and other applications.
The product adopts integrated design, higher integration, saving installation space; adopts domestic well-known brand high performance lithium iron phosphate cathode material, good core consistency, design service life of more than 10 years; the input and output circuit breakers are equipped with circuit breakers, which are safer and more reliable, front wiring, convenient installation and maintenance, easy operation; various functions, with single over-voltage/under-voltage, primary and secondary alarm protection, charge/discharge overcurrent, high temperature, low temperature, insulation and short circuit protection and recovery functions; strong compatibility, seamless docking with Inverter、solar charge controller, AC/DC charger, charging piles and other major equipment; communication interface forms, CAN2.0 and so on can be customized according to customer needs, convenient system remote monitoring and flexible use. High energy, low power lithium electric equipment, achieve higher energy supply, lower energy consumption, and reduce environmental pollution; adopt all-round, multi-level battery protection strategy and fault isolation measures to ensure the safe operation of the system.
Off Grid Solar Inverter
1, Two kinds of start mode: Reduction Voltage Start and Variable Frequency Start. Customers can set start mode according to the nature of their load.
2, The output frequency can be set, this function is very convenient for customer.
3, The output voltage can be set between +20 % to -40 % of rated voltage. It’s a great convenience to users.
4, The DC input voltage range can also be set. Over-voltage point, under-voltage point, over-voltage recovery point, under-voltage recovery point all can be set via the LCD panel. Convenient for increasing or reducing the quantity of batteries, photovoltaic modules also can be used flexibly.
5, Pure sine wave output. with good transient response less than 40MS, little harmonic distortion, higher conversion efficiency and stable output voltage.
6, Powerful data display and fault instruction function. LCD can display the DC input voltage, output frequency, phase voltage, phase current, AC bypass input voltage, output power KWH, time and date, temperature, fault code display.
7, Using the fifth generation efficient IPM intelligent module from Japanese Mitsubishi, high efficiency and stable performance. It with powerful protection function, the protection for short circuit, over load, over temperature is more safe and reliable. It’s service life can up to 15 years or more.
8, Wide input voltage can be set according to customer’s requirement. Input voltage range can be selected from 100-500V or 200-850V.
9, Product have passed the European CE (EMC and LVD) certificated and accredited by Australia CEC energy network.