Tuesday, March 12, 2013

Solar Systems for Schools, Offices, and Homes




Our hybrid systems work on both solar and grid electricity. During daytime, the loads are operated by solar energy. During nighttime, they are operated using the energy stored in solar batteries or on grid electricity. Batteries are charged by solar energy or grid energy or both. Our systems are modular and easily expandable. They also provide full UPS functionality. System Configuration, annual solar production, connected load, battery backup duration, and component details for our standard hybrid systems are shown on this page. Systems can be customized for higher levels of solar production and longer battery backup. System and component information may change at any time without notice.
Warranty:
One Year
Maintenance:
Monthly cleaning of solar panels and checking of battery water level. We do not recommend sealed batteries because of their limited life.
System Configuration and Solar Production:
ModelSolar PanelsInverterCharge ControllerBatteryAve. Solar Prod./ Month
1 KVA 2x 230W1 KVA20A, 24V4x  55Ah, 12V  63 KWh
2 KVA 4x 230W2 KVA20A, 36V3x 140Ah, 12V125 KWh
3 KVA 6x 230W3 KVA20A, 48V4x 140Ah, 12V188 KWh
4 KVA 8x 230W4 KVA30A, 48V8x 225Ah, 6V 250 KWh
6 KVA12x 230W6 KVA40A, 48V8x 140Ah, 12V375 KWh
 
Connected Load:
 ModelLights [25W] Fans [80W]  Laptop [100W]LCD TV [100W] Refrigerator* [200W]1-ton Air Conditioner* [1000W]
1 KVA  4 4 - -
2 KVA 10 6 1 1 - -
3 KVA 10 6 1 1 1 -
3 KVA 42---1
4 KVA  6 3 1 1 1 1
6 KVA 10 5 2 2 1 1
* Energy efficient inverter-technology based refrigerator and air conditioner.
1. Solar power is estimated to cater for half of energy needs if the load usage is kept under 10 hours per day. The other half will be provided by grid power.
2. Battery backup duration is estimated to be 5 hours if half of the connected load is operational.
3. Load quantities are presented as example only. Any combination of loads can be used as long as total watt limit is not exceeded.
4. Outdoor shade-free space for solar panels: 2.0m x 2.5m per KVA. Indoor space for battery and controls: 0.5m x 0.5m per KVA
Component Information:
ComponentManufacturerCountry of OriginOperating Life
Solar PanelJA SolarChina> 25 years
Solar PanelSuntechChina> 25 years
Solar BatteryRahimAfroozBangladesh> 5 years
 Solar BatteryTrojanUSA> 5 years
Charge ControllerSystekPakistan>5 years
 Charge ControllerOpti SolarTaiwan> 5 years
InverterSystekPakistan> 5 years
 InverterOpti SolarTaiwan> 5 years

 Block Diagram:
EP-BlockDiagram-Hybrid.JPG
Project/Product Pictures:
EP-Inst-DistGujranwala.jpg
4KVA Solar System

EP-Residential-3-720-410.jpg
 Solar Panels for 2KVA System

EP-Residential-4b2.jpg
Balance of Components for 2KVA System

 EP-hybrid-1kva-panels.jpg
Solar Panels for 1KVA System

 EP-hybrid-1kva-comp.jpg
Balance of Components for 1KVA System

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