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Sunpark Eco Energy Systems Co., Limited

China Sunpark New Energy Co., Ltd.

Add:Yunhelu 136,Changzhou City,Jiangsu P.R China



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Off Grid 3KW-5kw Solar Power Station

2018/7/16 11:53:42 Viewers:
  • BrandSunpark
  • TypeOff Grid
  • Require

An off-grid solar system (off-the-grid, standalone) is the obvious alternative to one that is grid-tied. For homeowners that have access to the grid, off-grid solar systems are usually out of question. Here`s why:
To ensure access to electricity at all times, off-grid solar systems require battery storage and a backup generator (if you live off-the-grid). On top of this, a battery bank typically needs to be replaced after 10 years. Batteries are complicated, expensive and decrease overall system efficiency.

Advantages of Off-Grid Solar Systems
1. No access to the utility grid
Off-grid solar systems can be cheaper than extending power lines in certain remote areas.
2. Become energy self-sufficient
Living off the grid and being self-sufficient feels good. For some people, this feeling feeling is worth more than saving money. Energy self-sufficiency is also a form of security. Power failures on the utility grid do not affect off-grid solar systems.
On the flip side, batteries can only store a certain amount of energy, and during cloudy times, being connected to the grid is actually where the security is. You should install a backup generator to be prepared for these kinds of situations.

Equipment for Off-Grid Solar Systems
Solar Charge Controller
Battery Bank
DC Disconnect (additional)
Off-Grid Inverter
Backup Generator (optional)

Solar Charge Controller
Good charge controllers are crucial for keeping the batteries healthy, which ensures the lifetime of a battery bank is maximized. If you have a battery-based inverter, chances are that the charge controller is integrated.
Battery Bank
Without a battery bank (or a generator) it’ll be lights out by sunset. A battery bank is essentially a group of batteries wired together.
DC Disconnect Switch
AC and DC safety disconnects are required for all solar systems. For off-grid solar systems, one additional DC disconnect is installed between the battery bank and the off-grid inverter. It is used to switch off the current flowing between these components. This is important for maintenance, troubleshooting and protection against electrical fires.
Off-Grid Inverter
There`s no need for an inverter if you`re only setting up solar panels for your boat, your RV, or something else that runs on DC current. You will need an inverter to convert DC to AC for all other electrical appliances.
Backup Generator
Backup generators typically output AC, which can be sent through the inverter for direct use, or it can be converted into DC for battery storage.

List of 3kw-5kw Off-Grid Solar Systems,others can be offer as your request

1 OFF-Grid Solar Power System Model OFF-3KW OFF-4KW OFF-5KW
2 Power 3240 Wp 4320 Wp 5400 Wp
Item Description Quantity
Solar Panel CUPV-270P60,270w poly solar panel 12 16 20
Inverter & Controller all in one 48VDC-2KW MPPT controller,pure sine wave 3KW 1
Battery Deep ycle AGM battery,free maintain,24V,4000AH 24 (optional)
Solar panel bracket Aluminum alloy,Flat and Slope Roof installation 1
Battery bracket Pot Galvanized Steel,including all metal connection between battery 1
Cables and accessoires 4.0sqm PV cable ,6.0sqm cable,including all spare parts 1

Solar Panel Specifications
Power:270W per piece
Size:992 x 1640 x 45 mm
Excellent module efficiency of up to:16.8%
High PTC rating of up to 91.89%
Outstanding low irradiance performance of up to 96.5%
IP67 junction box for long-term weather endurance
Heavy snow load up to 6000 Pa,wind load up to 4000 Pa
5 years of liner power output warranty
10 years of product on material and workmanshop warranty
Mechanical Data
Cell Type:Poly crystalline,6 inch
Cell Arrangement:60(6x10)
Front Cover:3.2mm tempered glass
Frame material:Anodized aluminum alloy
Connector:MC KST4/X and KBT4/X
Per Pallet:26 pieces,520kg
Max. System Voltage:1000V(IEC) or 1000V(UL)
Max.Series Fuse Rating:15A
Application Classfication:Class A
Power Tolerance:0~+5V
Solar Controller and Inverter all in one specifications
   4 inch LCD display
MPPT controller
Pure sine wave inverter
ow frequency single phase
Generator/Grid Hybrid system
Remote monitoring(RS485)
Remote monitoring GPRS/GSM
Optioanl:7 inch touch screen
Optional:output 3P4W three phases
PV Combiner Box Specifications
  Lightning protection
Reverse protection
Waterproof protection IP65
Over current protection
Over voltage protection
PV Mounting Bracket Specifications
  Aluminum alloy
Wind resistance 24.5m/s-28.4m/s
Optional:Pot Galvanized Steel
Roof installation(tin/tile/cement)
Optional: Ground installation
Battery Specifications
  Deep cycle battery
Free maintenance
With 70% capacity D.O.D 600 cycles
18 years design life
Warranty:2 years
Optional:GEL/OPzV/OPzs battery
Battery Bracket Specifications
   Hot galvanized steel
The meta connection between batteries are included
Cables Screws and Connectors
  4.0sqm. PV cable,6.0sqm. PV Cable
MC-4 connextors IP65
System Drawing

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