Place of Origin:
China
Brand Name:
SUNPOK
Certification:
CE MSDS UN38.3
Model Number:
SP-OF-10KW
Inverter Sizing for an Off-Grid System
Most off-grid systems need 120 Volt AC, and sometimes 240 Volt AC split-phase, to run the various appliances and loads around the house or cottage. That involves an inverter. An inverter turns (inverts) DC from the battery bank into AC to feed to our appliances.
Off-grid inverter sizing is pretty straight-forward: We need to have a good look at all the loads and figure out what the maximum Wattage is that the inverter needs to provide at any given moment in time. This means sizing for those appliances that realistically can be switched on at the same time, including those we have no control over (such as a fridge or freezer, where the thermostat switches the compressor on and off at random moments). There is no hard & fast rule for this, it really comes down to what we believe to be reasonable. For a small off-grid system it is reasonable to expect that the home owners do not switch on the microwave, hair-dryer, coffee maker, and bread toaster all at the same time (each of these is around 1,200 Watt). Instead, it’s reasonable to expect all those large loads to take turns, or possibly size for two simultaneous ones (such as a microwave and coffee maker).
For our example the largest load is the refrigerator, at 500 Watt, and it can switch on any time. We have no control over it. The rest of the loads are very small. That means a small inverter would have no trouble running this, for example a 1000 Watt one could do quite nicely.
Some loads have large startup currents that need to be taken into account. Typically motors, compressors, and pumps can require 3 to 5 times as much current (Wattage) to get started vs. what they need while running. Inverter spec sheets show how much the inverter can supply continuously, and for short periods. Typically even the cheaper inverters will supply at least twice their rated (continuous) output for a short time. For our example, the 500 Watt fridge likely needs around 1,500 Watt for an instant to get started, something a 1,000 Watt inverter should have no trouble with.
Advantages Of Sunpok Complete Off-Grid Solar System With Batteries
Relying on its strong R&D and design capabilities and years of industry experience, Sunpok Energy has vertically integrated high-quality suppliers in China and can provide one-stop new energy system customization services for customers around the world.
The main advantages of sunpok energy's home solar energy storage system are:
1. A suitable solar system can be designed according to the specific needs of customers.
We will customize solar energy systems for customers according to customers in different countries and regions and their electricity consumption habits. Bring high-quality user experience to customers.
2. Reasonable power configuration of each component (PV, Inverter and Battery).
Sunpok Energy will confirm how much PV power, inverter power, and battery capacity the system needs according to the reasonable collocation of each component, so as to prolong the service life of the system.
3. Safe and reliable structural design
We will design a reasonable structural plan for the customer according to the customer's installation site and local climate conditions.
4. Superior product quality
Sunpok Energy always regards product quality as the first priority. The quality of our batteries, PV Panels, inverters, and other system accessories are at the leading level in the world, making the life of the entire solar energy storage system more than 25 years.
5. The price advantage of the leading industry
After years of development, Sunpok Energy has integrated upstream and downstream supply resources, so the price is very friendly.
6. Comprehensive after-sale protection
Sunpok's after-sales team will solve problems for customers 24 hours a day, once customers order products from us, we will provide lifetime maintenance.
Main System Configuration
System Power | 3Kw Solar System | 5Kw Solar System | 10Kw Solar System |
Solar Pannels | 6 Pieces 450W Mono | 10 Pieces 450W Mono | 20 Pieces 450W Mono |
Battery | 24V 200Ah | 48V 200Ah | 48V 400Ah |
Inverter | 3.5Kw Off-Grid Inverter | 5Kw Off-Grid Inverter | 10Kw Off-Grid Inverter |
Power Generation/Per Day | 12.96Kwh | 21.6Kwh | 43.2Kwh |
Back-Up Power | 4.8Kwh | 9.6Kwh | 19.2Kwh |
Max On-Load | 3.5Kw | 5Kw | 10Kw |
Total Volume/Package | 1.92CBM | 2.18CBM | 3.38CBM |
Total Weight | 330Kg | 580Kg | 1120Kg |
Configuration Details
1. Energy storage lithium battery
2. Photovoltaic panels
3. Off Grid Inverter
4. Solar Mounting System
5. Accessories
About Sunpok Energy
Guangzhou sunpok energy co., ltd. is a high-tech green energy enterprise integrating battery research and development, design, and production. It was registered in Guangzhou, China in September 2016.
After more than 20 years of development, sunpok energy has become a leader in China's energy storage industry, vertically integrated upstream and downstream supply chain resources, continuously optimized the company's product matrix, improved product performance, and won praise from customers at home and abroad.
The products of sunpok energy have been sold all over the world, bringing green energy to more than 12,000 families and units. At present, the products of sunpok energy mainly include:
1. Energy Storage Lithium Battery
2. 48V Lithium Ion Battery
3. Lithium Portable Power Station
4. All In One ESS
5. Complete Off Grid Solar System
6. Hybrid Solar System Kit
7. Wind Solar Hybrid Power System
8. Off Grid Inverter
9. Deep Cycle Lithium Battery
10. 12V Gel Battery
11. Mono PV Panels
12. Residential Wind Turbine
Mutual benefit and win-win results have always been the tenet of Sunpok Energy. In the future, sunpok energy will work with partners to scale new heights with a more inclusive attitude.
FAQ
Question 1: What is the lead time?
Answer 1: We can deliver within 15 days.
Question 2:What is the warranty period, and how many years?
Answer 2: The warranty period for batteries and inverters is 5-10 years, and the warranty period for photovoltaic panels is 25 years.
Question 3: How is your technical support?
Answer 3: We provide lifetime online support through Whatsapp/ Skype/ Wechat/ Email. Any problem after delivery, we will offer you a video call anytime, our engineer will also go to oversea help our customers if necessary.
Question 4:How to become your agent?
Answer 4: Contact us through web email or phone, and we can talk about details to confirm.
Question 5: Is the sample available and free?
Answer 5: The sample will be charged a cost, but the cost will be refunded after the bulk order.
Question 6: Do you support OEM/ODM?
Answer 6: Of course, we can do customized services for our partners.
If you have other questions, please add the contact information of our sales manager to understand, thank you!
Send your inquiry directly to us