Off-Grid Low Frequency PV Inverter EP3200 Series 1KW-3KW

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30000 watt
Supply Capability:
18000000 watt/month

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1. Structure of Off-Grid Low Frequency PV Inverter Description

A solar inverter, or PV inverter, or Solar converter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a

utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a

critical BOS–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar inverters have special

functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection..


2. Main Features of the Off-Grid Low Frequency PV Inverter

• High overload ability of our EP3200 charger is up to 300% rated power

• EP3200 pure sine wave inverter adopts low quiescent current, and power saver mode to reduce power consumption to 3W

• It can extract max• power from various batteries with different protections, and low voltage trip can be selected (10V/10. 5V/11V)

• Uses PFC (power factor correction) for charger, which has less power consumption than conventional units.

• It has 10s delay before transfer when AC resumes, and overload protection when our APC pure sine wave inverter equips with generator

• 10ms typical transfer time between battery and AC, which guarantees power continuity of EP3200 charger. Uses selectable input AC

voltage (185-265V or 155-255V) for different kinds of loads

• Our EP3200 charger allows start up and through power with depleted batteries. Its powerful charge rate up to 70Amp

• It can offer 3-step intelligent battery charging, and equipped with 6 preset battery type selector for totally flat batteries

• LCD status display, battery/AC priority switch, RS232 communication port are available for our EP3200 pure sine wave inverter, it also has

 17 alarms/warnings for easier operation and trouble-shooting, and ability to switch the unit on/off. In addition, select/deselect power saver

mode can be used too


3. Off-Grid Low Frequency PV Inverter Images

Off-Grid Low Frequency PV Inverter EP3200 Series 1KW-3KW

Off-Grid Low Frequency PV Inverter EP3200 Series 1KW-3KW

Off-Grid Low Frequency PV Inverter EP3200 Series 1KW-3KW

Off-Grid Low Frequency PV Inverter EP3200 Series 1KW-3KW



4. Off-Grid Low Frequency PV Inverter Specification

Rated Capacity









120v Models

230v Models

Nominal Voltage

100V/110V/115V/120V Selectable

200V/220V/230V/240V Selectable


Rated Power





Output Voltage

100V/110V/115V/120V Selectable

200V/220V/230V/240V Selectable

Voltage Waveform

Pure Sine Wave

Crest Factor



±10% Typical Of Nominal Voltage

Transfer Time

Transfer Time : AC To DC : 10ms (Typical)

Transfer Time : DC To AC : 10ms(Typical )

Max Bypass Overload Current



Nominal Voltage





Over Current Protection

By Re-Settable Over Current Protector


Nominal Input Voltage


Input Voltage Range


Nominal Charge Current


Charger Short

Circuit Breaker

Circuit Protection

Over Charge

Bat• V  15• 7Vdc/31• 4Vdc/62• 8Vdc


Beeps 0• 5s Every 1s & Fault After 60s

Battery Type

Lead-Acid 12Ah 250Ah

Typical Backup Time

No Limit, Depend on external battery

Average Charging Current





Battery voltage Option

Options 7

Battery low trip to bypass 11v , high trip to battery 14v

Options 8

Battery low trip to bypass 10• 5v , high trip to battery 13• 5v

Options 9

Battery low trip to bypass 10v , high trip to battery 13v

Communications & Management 

Control Panel

LCD/LED Option

Audible Alarm

Alarm On BatteryLow Battery & Battery Over Voltage

Alarm On Abnormal Operation

Over Load, Short-Circuit, & Over Heat

Environment and Safe

Operating Temperature

0 To 40 (32 To 104)

Transit/Storage Temperature

-15 To 60

Audible Noise

60 Dba Max at 1m

Quality Control System



Dimensions: (H×D×W)


G• W (Kg)






Export Carton For Each Unit Per Carton


5. FAQ of Off-Grid Low Frequency PV Inverter


Q1 What is the difference between inverter and Off-Grid Low Frequency PV Inverter?
A1Inverter only has AC inpput, but Off-Grid Low Frequency PV Inverter both connect to AC input and solar panel, it saves more power.


Q2 What is the difference between MPPT&PWM?
A2MPPT has higher efficiency, it can track the max power point and won't waste energy.


Q3 What is the waranty of product?
A3 12 months.

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Q:Grid-connected inverter is generally divided into photovoltaic power generation grid-connected inverter, wind power grid-connected inverter, power equipment and grid-connected inverter and other power generation equipment power generation inverter.
The small use of field-effect transistors while using a DSP conversion controller to improve the quality of the output power makes it very close to the sine wave current.
Q:Is the grid side of the grid and the inverter?
The grid load side of the grid is the grid. The inverter is an important part of the PV grid-connected system and can not be regarded as an external load. Photovoltaic power generation system is included in both grid and off-grid.
Q:What is the difference between a grid-connected inverter and an off-grid inverter? What are the advantages of a hybrid inverter?
Off-grid inverter is equivalent to their own to establish an independent small power grid, mainly to control their own voltage, is a voltage source.
Q:PV grid-connected inverter can directly load it?
Converter is the AC voltage of the grid into a stable 12V DC output, and the inverter is the AC output of the 12V DC voltage into high-frequency high-voltage alternating current; two parts are also used with more pulse width
Q:What is the difference between a PV grid-connected inverter and an off-grid inverter?
Off-grid inverter is equivalent to their own to establish an independent small power grid, mainly to control their own voltage, is a voltage source.
Q:Solar grid inverter does not merge into the grid, direct access to the load to the load power supply?
Widely used in air conditioning, home theater, electric wheel, power tools, sewing machines, DVD, VCD, computer, TV, washing machine, range hood, refrigerator, video recorders, massage, fan, lighting and so on.
Q:Photovoltaic grid-connected inverter without DC emc how will happen
light is obtained by the electrons of the semiconductor device, thus generating electrical energy. This energy conversion of light energy into energy, that is, solar cells. Solar cells, like transistors, are made of semiconductors. Its main material is silicon, and there are some other alloys. High-purity silicon used in the manufacture of solar cells is subject to special purification. Solar cells as long as the sun or light exposure,
Q:After the PV inverter, how to achieve the same period before the network?
It can automatically detect the generator and the grid frequency and voltage, in the frequency, voltage, phase are in line with the requirements of the grid to set the time before the release of the closing signal, so that it can be safely and securely connected.
Q:Photovoltaic grid-connected inverter problem
The first zero line is the AC output. Any AC output of the inverter will have zero line, whether it is isolated or non-isolated. Isolation is the safety of high voltage inverters and regulators. 50KW above the inverter almost with the transformer.
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
Self-use, do you mean off-grid system? Or else? Europe and Sweden side of the grid project electricity situation is also self-use? If not for their own use or spontaneous use is not used up, sent to other places electricity, you need a transformer?

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