Off-Grid Solar Inverter 3KW-8KW CE Approved AAA Quality with Best Price

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Product Description:

Off-Grid Solar Inverter 3KW-8KW    

 

EA-GF series products are on the basis of green energy use and equipment electricity need for remote area, combing the electricity characteristics of household appliances, communication station equipment and computer peripheral equipment. They have the function of energy conservation and environment protection. They adopt MCU control technique, having various kinds of function such as multi-setting mode, MPPT control, voltage stabilization on line, short-circuit protection, inverter frequency adaptive, output overload, battery charging management, monitoring etc. With display of LCD and LED, all the parameters and running status could be visible. Intelligent monitor is available via RS232 &USB connecting with PC, while remote control via RS485 &SNMP. EA-GF series products are the ideal power supply delivered with excellent performance, high stability, high reliability and high practical applicability

   

 

● Multi-setting
PV priority mode or AC priority mode
Choose the charging current based on the configured capacity of the battery
● High reliability: Double MCU digital control
Independent MPPT (Maximum Power Point Tracking) control microprocessor system 
Independent inverter microprocessor control system 
● Isolated and pure sine wave technology
● LCD+LED display
● Wide input range
● High-speed synchronous conversion
● Friendly alarm system 
● Online protection function
● Frequency auto adaptive
● Intelligent No-load auto shutdown technology (optional)
● Intelligent monitoring (RS232, USB, or SNMP card, optional)

 

 

Model

GF3000

GF4000

GF3000

GF5000

GF6000

GF8000

Power

3KW

4KW

3KW

5KW

6KW

8KW

Battery Voltage

96Vdc

192Vdc

Working Mode

PV priority / AC priority optional

PV

MPPT Voltage Range

96Vdc - 200Vdc

192Vdc - 400Vdc

Max. Charge Current

10-60A

10-40A

10-60A

PV Panels Configuration(Suggestion)(Vmp)

120-142Vdc

240-284Vdc

PV Panels Configuration(Suggestion)(Imp)

≤60A

≤40A

≤60A

Conversion Efficiency

≥ 98 %

Display

Panel Indicator

LCD+LED Panel display

AC Mode

Input Voltage Range

165Vac- 275Vac

Input Frequency Range

40-70 Hz (auto transfer to battery mode, if beyond this range)

Output Voltage Precision

220Vac± 5%

Input Power Factor

≥0.8

Max. Efficiency

88% (inverter on)

Overload

110% transfer to bypass in 255s,120% go to bypass in 60s, 150% go to bypass in 10s.

Max. Charging Current

8A

12A

Short Circuit Protection

Electronic limited current output or turn bypass, air breaker protection

Inverter Mode

Output Voltage

220Vac± 5%

Output Frequency

50 Hz / 60Hz ± 1% Frequency self-adjusted

Output Power Factor

1

Distortion

≤ 5% Linear load

PV-AC Transfer Time

0ms

Max.Efficiency

≥92%

Overload

110% transfer to bypass, in 255s or shut down,120% go to bypass or shut down in 60s, 150% go to bypass or shut down in 10s.

Eco Mode(Optional)

When Load < 5%, system will turn to bypass power supply (utility) in 1min

Short Circuit

Electronic limited current output, turn the bypass or system to be automatic shutdown

Alarm

AC Fails

1/4s; automatic sound elimination after 40s

Battery Low Voltage

5/1s

Overload

1/1s

Communication (Optional)

Communication Interface

RS232 / USB / RS485 / SNMP

Dry Contact

PV failure、battery low-voltage、overload、bypass、inverter failure、

remote start generator dry contact signal

Others

Output Connection

Terminal blocks

Surge Protection

Optional

EMC

Accord with EN62040-2:2006;EN61000-3-2:2006; EN61000-3-3:2008

IP Class

IP20

Ambient Temperature

0℃ ~ 40℃

Ambient Humidity

10% ~ 90%(Non Condensed)

Noise

≤ 50dB

Working Altitude

2000m (Every 100m increase derating 1%)

Dimension (WxDxH)mm

560×265×725


Packing Dimension (WxDxH)mm

662×360×905

Weight(kg)

76

80

60

67

69

85

Packing Weight(kg)

85

89

69

76

78

94

 

·         Q. What is an UPS and What it is for ?

An uninterruptible power supply (UPS) is a device that allows your computer or telephone switch or critical equipement to keep running for at least a short time or longer time when the primary power source is lost. It also provides protection from power surges, spikes, brownouts, interference and other unwanted problems on the supported equipment.

·         Q. How long the UPS to run when power goes?

This can take 3 paths.
1.You can pick a UPS that is rated for pretty much the full VA you need so it will be running at 100% of capability and will thus last 'n' minutes.
2.You can pick a UPS that is rated at a much higher VA value than you really need so, for example, is running at 50% of capability and will thus last for longer than the UPS from option 1.
3You can use extra external battery packs to run for longer. If charging capability allows, the more and the bigger batteries you take with, the longer time UPS runs. 
or using a generator after about 6 hours, it will be more cost-effective, with a short runtime UPS to bridge the generator start-up gap.

 

 

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Q:In a photovoltaic grid-connected project, the role of the inverter is to convert the voltage into AC 220V or 380V for the grid, since the transformer will raise the voltage again
Unless the power is not issued for their own use, is to be sent to other areas, it needs to boost, such as the western region of those large power stations
Q:What is the difference between a grid-connected inverter and an off-grid inverter? What are the advantages of a hybrid inverter?
Hybrid inverter is not a clear concept, but now both energy storage dual-grid inverter does have the ability to receive control system,
Q:The working principle of photovoltaic grid - connected inverter
Full-bridge inverter circuit to overcome the shortcomings of the push-pull circuit, the power transistor to adjust the output pulse width, the output AC voltage RMS that changes. Since the circuit has a freewheeling circuit, even if the inductive load, the output voltage waveform will not be distorted. The disadvantage of this circuit is that the upper and lower arms of the power transistor are not common, so you must use a special drive circuit or use isolated power supply. In addition, in order to prevent the upper and lower arm co-conduction, must be designed to turn off after the conduction circuit, that must be set dead time, the circuit structure is more complex.
Q:How the output voltage of the PV inverter and the grid-connected voltage are determined
DC voltage and AC side voltage does not matter, the general PV inverter AC output is 400V / N / PE. With no isolation transformer and output voltage does not matter, grid-connected inverter is the regulation of current, and network voltage depends on the grid voltage. And the grid before the inverter will detect the grid voltage, meet the conditions will be network.
Q:Three-phase photovoltaic inverter grid, the use of phase-locked loop is what?
Photovoltaic inverters for grid-connected photovoltaic power generation systems are primarily capable of receiving DC power from photovoltaic arrays and converting them into sine-wave currents of the same frequency and in phase with the access grid for powering the grid or local loads.
Q:What are the methods of photovoltaic grid-connected inverter control
The square wave output of the inverter using pulse width modulation integrated circuits, such as SG3525, TL494 and so on. Practice has proved that the use of SG3525 integrated circuits, and the use of power FET as a switching power components, to achieve high performance of the inverter, because the SG3525 has a direct drive power FET capability and has an internal reference source and operational amplifiers and Undervoltage protection, so its peripheral circuit is very simple.
Q:PV grid-connected inverter can directly load it?
Grid-connected inverter is usually equipped with island protection function, can only receive the power grid, if the load directly, the output is disconnected.
Q:PV grid-connected inverter and independent inverter in the control of what is the difference
The independent inverter in the output voltage phase amplitude of the frequency control is initially set good. Independent inverter, you should refer to off-grid inverter, do not need to consider the grid situation.
Q:What is the difference between a PV inverter and a solar inverter?
The main component of the inverter is the three-phase bridge converter. The main purpose of the grid-connected inverter is to change the power to DC and change the AC power. The main purpose is to improve the power quality (because the wind power generation is very large
Q:Is the PV inverter a current source or a voltage source?
Inverter is a kind of semiconductor device composed of power adjustment device, mainly used for DC power into AC power.

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