Solar power is promising new-style energy. It has three advantages: permanency,

cleanness and flexibility. As long as the sun exists, solar power generation is of

one-time investment but long-term usage. Compared with thermal power and

nuclear energy power�generation, solar power generation will not cause

environmental pollution. The solar power system develops big, medium-sized

and small ones, ranging from 1000MW medium-sized power station to solar

power group only for one household, which are incomparable superiorities to

other power sources.

The presence of a functional electricity grid is not always as obvious as it would seem to be. An insufficient

infrastructure is often the cause for an unreliable grid. Things become even more difficult when there is no

grid at all. And yet you are in need of a reliable electricity supply. A local and properly functioning system is

the only answer at this point.

Grid-off Solar Power System

Introduction

A typical grid-off solar power system consist of solar panel, combiner box, solar charger controller, battery,

Inverter and some necessary accessories.

Grid-off Solar Power System Compositon

Grid-off solar

power system

composition

Solar

panel

Solar

charger

controller

Battery

Inverter

Combiner

box

1.Solar panel

The solar panel is the core of the solar power system, which is also of the highest value compared with others. Its

function is to make the sun's radiation be converted to electrical energy, sent or stored in batteries, or to promote

the work load. The solar radiation is directly converted into electricity by means of photoelectric effect. The basic

equipment of photo-electricity conversion is the solar battery, which is a device used to convert sunlight power

into electric energy directly by photovoltaic effect. It is a semiconductor photo diode. Irradiated by the sunlight,

the photo diode will convert the sunlight power into electric energy and produce electricity. When a lot of batteries

are in series or parallel, it will be a solar cell matrix which has great output power.

3.Battery

Generally, storage battery is lead-acid batteries.

Nickel-metal hydride batteries, nickel-cadmium

batteries and lithium batteries are also used in the

micro and small systems. Its function is to make the

solar panels of electricity be stored when exposed

to the sunlight and be released when needed.

4.Inverter

Generally, the direct outputs of solar power are

12VDC, 24VDC, 48VDC. In order to provide

electricity for 220VAC appliance, DC-AC inverters

are needed to transform the direct current

generated by the solar power system into the

alternating current.

5.Combiner box

Combiner box can access multiple photovoltaic

array at the same time. It makes the system more

safety

2.Solar charger controller

Its function is to control the entire system, and

played a battery charge protection, over-discharge

protection. It also can make up the temperature if it

is the qualified controllers, especially in the area

with big difference in temperature. Other auxiliary

function of controlling of light and time is selectable.

Grid-off Solar Power System

Solar Controller

Solar Panel

Batteries

InverterLoad

Load

Model

ESM250-156

DP-12300

ESCC-M060D-B

ESC3000

SCB4

/

/

/

Specifications

250W/30V

12V/300AH

48V/60A

3KW/48V

220VAC/50HZ

/

/

/

/

Quantity

12

8

1

1

1

1

1

1

pcs

pcs

pcs

pcs

pcs

set

set

set

Product

Solar panel

Battery

Solar charger controller

Inverter

Combiner box

DC Cable with connector

Mounting bracket

Battery bracket

System configuration table

�3KW Grid-off Integrate System Provide by EverExceed