Winpower MI Series Bedienungsanleitung

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MI Series

Off-grid Single-phase Inverter

User Manual

SP Model

2KVA 48V WI20-48

2KVA 120V WI20-120

3KVA 24V WI30-240

5KVA 48V WI50-240

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Contents

1. Important Safety Warning............................................................................................................ １

2. Basic Information........................................................................................................................... ２

2.1 Introduction and Features........................................................................................................２

2.2 Product Structure.....................................................................................................................２

3. Product Installation........................................................................................................................３

3.1 Installation Notes.....................................................................................................................３

3.2 Installation and Wiring............................................................................................................ ３

3.2.1 Installation Space Choosing................................................................................................. ３

3.2.2 Electrical Connection........................................................................................................... ５

4. Operation Interface Introduction................................................................................................. ６

4.1 LCD Display............................................................................................................................６

4.2 LCD Information Define......................................................................................................... ７

5. Trouble Shooting............................................................................................................................ ７

6. Technical Parameters.....................................................................................................................９

7. Warranty..................................................................................................................................... １０

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１

1. Important Safety Warning

Before Using the machine, please read all instructions and cautionary markings on the unit and

this manual. Store the manual where it can easily be accessed.

This manual includes all safety warnings, installation, and operation guidance of MI series off-grid

inverter.

Before installing and using this machine, read all instructions and cautionary markings on the

machine and all appropriate sections of this guide.

Do not use the machine in the place where has flammability and explosive gas/articles. Beware

of flames and sparks.

Please Contact our after-sales person if the machine doesn’t work.

Do not change the electrical components and parts yourself, or we will not responsible for the

warranty items and related duties.

Please disconnect the connection between AC output, battery and machine before install or

maintain the machine. Besides, do not touch the machine in 5 mins after disconnection.

Do not plug/unplug DC terminal, AC terminal and battery when the inverter works.

Please use copper cable for line connection, and choose the right diameter of cable according to

the actual current.

Please keep good ventilation and heat dissipation.

Please install a circuit breaker outside the machine if conditions allow.

To avoid a risk of fire and electric shock, make sure the existing wiring is in good condition and

that the wire is connected tightly.

Do not restart the machine immediately when it alarms. Please analyze the fault reasons and

repair them at first.

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2. Basic Information

2.1 Introduction and Features

MI series is a kind of off-grid pure sine wave single-phase inverter. It is mainly applied in wind,

solar, wind&solar hybrid power generation station, household wind&solar hybrid power generation

system and power supply for those unmanned regions like the coastal islands, remote border posts.

Features

Can be applied in wind, solar, wind&solar hybrid power generation system.

Simple structure, complete function

Low no-load loss by using industrial frequency transformer

Compliant with CE requirements

2.2 Product Structure

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Chart1. Product Overview

①

Inverter indicator

⑤

AC output terminal

②

LCD display

⑥

Cooling fan

③

Inverter switch

⑦

AC output socket

④

Battery terminal

3. Product Installation

3.1 Installation Notes

1) The machine should be kept indoors and well ventilated;

2) Environment temperature: -20～+40℃; Humidity: <=95%，no condensing

3) Altitude should not be more than 4000m( ＞1000 m derating according to the GB/T3859.2

regulations).

4) Avoid using the machine in direct sunlight, sun exposure, rain, humidity, acid fog, and dust.

5) To guarantee the lifespan, it is suggested that the space around the device has no other items

within 30CM.

3.2 Installation and Wiring

3.2.1 Installation Space Choosing

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Chart2: Installation diagram

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3.2.2 Electrical Connection

Chart 3: System Overview

Please connect those parts according to the order of ①-②, and notice the following items.

1. Please adjust the inverse switch is to “OFF” status before installation.

2. Connect “+” “-” of the battery to “+” “-” of the “BATTERY” terminal on the machine

accoridngly. (Do not reverse the connection of positive and negative terminals)

3. Connect “N” and “L” and earth wire of the AC load to the “N”, “L” and “ ”terminals on the

machine.

4. Connect the grid to the AC input terminal if the machine has by-pass function.

5. Check all the connections to make sure they are connected rightly and tightly.

6. Turn on the switch and then the system can supply power normally.

Notes:

1) Do not connect any equipment in wrong polarity to the terminals on the machine.

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2) Please choose the inverter whose power is 3-5 times larger than the rated power labeled on these

machines if the load is inductive load such as refrigerator, electromotor, washing machine, and

water pump. Besides, please do not turn on them at the same time.

3) AC output socket can not be connected to equipments with large power. The ouput current

should be kept no more than 10A, or the socket will be overcurrent and even the inverter will be

burnt.

4) Do not connect “L” and “N” to the earth terminal, or the machine will be damaged forever.

5) “IVT Switch” is “on”, the inverter is turned on, if change it to “off”, the inverter is turned off.

4. Operation Interface Introduction

4.1 LCD Display

①

Work states

②

IVT indicator

③

Battery voltage

④

AC output voltage

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4.2 LCD Information Define

Icon

Statement

Inverter works normally

Inverter is on protection status, and no AC output

in such status.

"undervoltage”

Battery is on undervoltage status

“overvoltage”

Battery is on overvoltage status

“overload” flickers

The load is on short circuit status

“overload” keeps on

Output is on overload protection status

“over temperature”

The inverter is on over-temperature protection

status

5. Trouble Shooting

Fault Type

Analysis

Possible Solutions

No display

on LCD

The connection between the battery and the

machine is not tight

Check the wiring, and reconnect

it.

Fuse is cut off

Change a new fuse

Battery is over discharged or damaged.

Change the battery

System parameters are not matched correctly.

Recheck the label and parameters

on the machine.

No AC

output

IVT switch is off.

Change it to “ON”.

“undervoltage”

Battery voltage is low and

hasn’t reached the

undervoltage recovery

point; the inverter is on

When the battery reached the

undervoltage recovery point, the

output of the inverter will

recover automatically.

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undervoltage status.

“overvoltage”

Inverter doesn’t match

with the system.

Recheck the system parameters.

Battery is on overvoltage

status, for the charging

system doesn’t work

normally and over charge

the battery.

Check the actual voltage of the

battery, and confirm if the

charging system works normally.

“over

temperature”

Internal temperature of

the inverter is high, the

machine is on over

temperature protection

status.

keep good ventilation, or reduce

the load.

“overload”

“Overload” displays all

the time, output capacity

is more than the rated

output capacity of the

inverter.

Reduce the load power, and then

restart the IVT switch.

Short circuit

“Overload” flickers, the

load is short circuit.

Inverter starts “short

circuit” protection.

Solve the short circuit part and

restart the inverter.

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