20A 24V Charge Controller for Solar Power Panel System

Description

24V 20A Charge Controller
For Solar Power Systems
Brand new~
Environment friendly~
Introduction:
The charge controller regulates the flow of electricity from the solar modules / wind generator to the battery bank. When the battery bank is low, the charge controller feeds all of the electricity from the array / generator to the batteries. When the batteries reach a state of full charge, the charge controller stops or redirects the supply of electricity to prevent overcharging. Modern charge controllers have the ability to hold the battery bank in a "
float
" state of charge if the bank is not being used. At night the charge controller prevents a reverse flow of current from the batteries to the modules.
There are three basic types of charge controllers - series, shunt and
pulse-width-modulated
. A series controller, the most basic type, acts as a switch to disconnect and re-connect the solar modules to the battery bank. A shunt type controller redirects the current from the solar modules - either by simply short circuiting the array or by directing the current to some other load.
Pulse-width-modulated
charge controllers, the
most up-to-date
type, maintain the battery bank in a float state of charge. "
Float
" is the voltage level just below gassing voltage. Keeping the batteries in this state of charge delivers their best possible life without using excessive electrolytic.
Many people have asked about power point tracking and whether it has any real advantages.
Maximum Power Point Tracking (MPPT)
converts the difference between a solar modules rated voltage, (usually 17 volts) and a battery banks charging voltage (up to 14.7 volts) into usable charging current. Often claims are made for up to a 30% increase in charging current. This gain, however, is possible under a very limited set of conditions. The "extra" module voltage is there for a reason: to allow for real world use of the solar module, i.e. the voltage drop caused by the array wiring and other components, including the charge controller, between the solar array and batteries. Also, high ambient temperatures cause the solar module to drop in voltage further reducing this "extra" voltage
Having said that, there are times when the voltage difference will be high enough to provide extra current to a battery bank utilizing this type of charge controller. Cold weather comes to mind, as well as low battery bank voltage. Under these conditions, it can be possible to get as much as
10% to 30%
more current from your solar modules.
Features:
Pulse-width-modulated
to keep battery bank at a "
float
" state of charge
Maximize Efficiency with
Max Power Point Tracking
(around
30%
increase in charge)
Built in diode to prevent reverse flow of current back to the modules
Temperature Compensation
Maximum Output: 20A
Voltage: 24V
Continue Power: 480W
Over-charge Protection
Over discharge protection
Can use AC Power as source
Specification:
Parameters
24V- 20A Solar Controller (CQ2420)
Rated Voltage
(
V
DC
)
24
Rated Current
(
A
)
20
Max. input Voltage
(
V
)
50
Over-
Charge
(
V
)
Protection
28.8
±
0.2
Resume
26.6
±
0.2
Over-
Discharge
(
V
)
Cut-off
22.2
±
0.2
Resume
26.4
±
0.2
Over-
Loaded
Cut-off
33.0
Resume
30.0
Voltage
Drop
(
V
)
Between input and batteries
0.6
Between batteries and load
0.4
No Load Current Draw
(
mA
)
<5
Ambient Temperature
-10
C~
55
C
Height
(
m
)
<
5500
Size
164X 100 X 41 mm
Weight
0.36kg
Temp Compensated factor
-4mV/C
to -6mV/C
Electric Discharge self-setting
The controller will adjust over-discharge voltage and protected voltage according to batteries dishcarge rates
Max Power Point Tracking
Yes
Includes:
- Charge Controller
- Temperature detector
- Extra 20A Fuse
- 7 connectors
- Instruction Maunual
Types of Connection:
1 Set of Panels
Panel Set 1 connects to
Panel Input 1 & 3
with positive terminal to hole 1 and negative to hole 3
Battery (optional)
Grid connection to
Load 1 & 2
2 Sets of Panels
Panel Set 1 connects to
Panel Input 1 & 3
with positive terminal to hole 1 and negative to hole 3
Panel Set 1 connects to
Panel Input 1 & 2
with positive terminal to hole 1 and negative to hole 2
Battery (optional)
Grid connection to
Load 1 & 2
NO OPERATING COST
GENERATES ELECTRICITY FROM THE ABUNDANT RESOURCE - SUNLIGHT
The Charge Controller is compatible with the following Panels:
1Pcs 12W Solar Panel
2Pcs
12W Solar Panel =
24W
4Pcs
12W Solar Panel =
48W
6Pcs
12W Solar Panel =
72W
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