Micno 3kW DC24V User manual

USER MANUAL

3.5KW/5.5KW

SOLARE INVERTER/CHARGER

Contents

ABOUT THIS MANUAL................................................................................................................................................................ 1

Purpose.............................................................................................................................................................................. 1

Scope ................................................................................................................................................................................. 1

SAFETY INSTRUCTIONS .............................................................................................................................................................. 1

INTRODUCTION ......................................................................................................................................................................... 2

Features ............................................................................................................................................................................. 2

Basic System Architecture ................................................................................................................................................. 2

Product Overview.............................................................................................................................................................. 3

INSTALLATION ............................................................................................................................................................................ 4

Unpacking and Inspection ................................................................................................................................................. 4

Preparation........................................................................................................................................................................ 4

Mounting the Unit............................................................................................................................................................. 4

Battery Connection............................................................................................................................................................ 5

AC Input/Output Connection............................................................................................................................................. 7

PV Connection ................................................................................................................................................................... 8

Final Assembly ................................................................................................................................................................. 10

Communication Connection............................................................................................................................................ 10

OPERATION.............................................................................................................................................................................. 11

Power ON/OFF................................................................................................................................................................. 11

Operation and Display Panel ........................................................................................................................................... 11

LCD Display ICONS ........................................................................................................................................................... 12

LCD Setting....................................................................................................................................................................... 14

Fault Reference Code....................................................................................................................................................... 19

Warning Indicator............................................................................................................................................................ 19

Operating Mode Description........................................................................................................................................... 20

Display Setting ................................................................................................................................................................. 22

SPECIFICATIONS ....................................................................................................................................................................... 23

Table 1 Line Mode Specifications .................................................................................................................................... 23

Table 2 Inverter Mode Specifications .............................................................................................................................. 24

Table 3 Charge Mode Specifications................................................................................................................................ 24

Table 4 General Specifications......................................................................................................................................... 25

Trouble shooting...................................................................................................................................................................... 26

Appendix: Approximate Back-up Time Table........................................................................................................................... 26

ABOUT THIS MANUAL

Purpose

This manual describes the assembly, installation, operation and troubleshooting of this unit. Please read this manual

carefully before installations and operations. Keep this manual for future reference.

Scope

This manual provides safety and installation guidelines as well as information on tools and wiring.

The following cases are not within the scope of warranty.

1. Out of warranty.

2. Series number was changed or lost.

3. Battery capacity was declined or external damaged.

4. Inverter was damaged caused by transport shift, remissness, etc external factor

5. Inverter was damaged caused by irresistible natural disasters.

6. Not in accordance with the electrical power supply conditions or operate environment caused damage.

SAFETY INSTRUCTIONS

WARNING: This chapter contains important safety and operating instructions. Read and keep this manual

for future reference.

1. Before using the unit, read all instructions and cautionary markings on the unit the batteries and all appropriate

sections of this manual.

2. CAUTION --To reduce risk of injury charge only deep-cycle lead acid type rechargeable batteries. Other types of

batteries may burst, causing personal injury and damage.

3. Do not disassemble the unit. Take it to a qualified service center when service or repair is required. Incorrect

re-assembly may result in a risk of electric shock or fire.

4. To reduce risk of electric shock, disconnect all wires before attempting any maintenance or cleaning. Turning off the unit

will not reduce this risk.

5. CAUTION --Only qualified personnel can install this device with battery.

6. NEVER charge a frozen battery.

7. For optimum operation of this inverter/charger; please follow required spec to select appropriate cable size. It is very

important to correctly operate this inverter/charger.

8. Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop a tool to spark or

short circuit batteries or other electrical parts and could cause an explosion.

9. Please strictly follow installation procedure when you want to disconnect AC or DC terminals. Please refer to

INSTALLATION section of this manual for the details.

10. Fuses (1 piece of 150A, 63VDC for 3kW~ 5kW) are provided as over-current protection for the battery supply.

11. GROUNDING INSTRUCTIONS- This inverter/charger should be connected to a permanent grounded wiring system. Be

sure to comply with local requirements and regulation to install this inverter.

12. NEVER cause AC output and DC input short circuited. Do NOT connect to the mains when DC input short circuits.

13. Warning!! Only qualified service persons are able to service this device. If errors still persist after following trouble

shooting table, please send this inverter/charger back to local dealer or service center for maintenance.

INTRODUCTION

This is a multi-function inverter/charger; combining functions of inverter; solar charger and battery charger to offer

uninterruptible power support with portable size. Its comprehensive LCD display offers user-configurable and

easy-accessible button operation such as battery charging current, AC/solar charger priority, and acceptable input voltage

based on different applications.

Features

Pure sine wave inverter

Configurable input voltage range for home appliances and personal computers via LCD setting

Configurable battery charging current based on applications via LCD setting

Configurable AC/Solar Charger priority via LCD setting

Compatible to mains voltage or generator power

Auto restart while AC is recovering

Overload/ Over temperature/ short circuit protection

Smart battery charger design for optimized battery performance

Cold start function

Basic System Architecture

The following illustration shows basic application for this inverter/charger. It also include following devices to have a

complete running system:

Generator or Utility

PV modules (option)

Consult with your system integrator for other possible system architectures depending on your requirements.

Figure 1 Hybrid Power System

Product Overview

1. LCD display 2. Line indicator 3. INV indicator 4. Battery indicator

5. Fault indicator 6. Function button 7. RS232 port 8. USB port

9. AC input 10. AC output 11. PV input 12. Battery input

13. Input over current protection 14. Parallel communication port (only for models with parallel function)

15. Power on/off switch 16. Installation kit

INSTALLATION

Unpacking and Inspection

Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should have received

the following items inside of package:

The unit x 1

User manual x 1

Preparation

Before connecting all wires, please

Remove two screws as shown below.

Mounting the Unit

Consider the following points before selecting where to install:

1. Do not mount the inverter on flammable construction materials.

2. Mount on a solid surface.

3. Install this inverter at eye level in order to allow the LCD display

to be read at all times.

4. For proper air circulation to dissipate heat, allow a clearance of

approx. 200 mm to the side and approx. 300 mm above and below

the unit.

5. The ambient temperature should be between 0c and 55℃to

ensure optimal operation.

6. The recommended installation position is to be adhered to

the wall vertically.

7. Be sure to keep other objects and surfaces as shown in the

diagram to guarantee sufficient heat dissipation and to have

enough space for removing wires.

SUITABLE FOR MOUNTING ON CONCRETE OROTHER

NON-COMBUSTIBLE SURFACE ONLY.

Install the unit by screwing four screws.

Battery Connection

CAUTION: For safety operation and regulation compliance, it's requested to install a separate DC over-current protector or

disconnect device between battery and inverter. It may not be requested to have a disconnect device in some applications,

however, it is still requested to have over-current protection installed. Please refer to typical amperage in below table as

required fuse or breaker size.

WARNING! All wiring must be performed by a qualified personnel.

WARNINGI It's very important for system safety and efficient operation to use appropriate cable for battery connection.

To reduce risk of injury, please use the proper recommended cable and terminal size as below.

Ring terminal:

Recommended battery cable and terminal size:

Model

Typical Amperage

Wire Size

Cable mm2

Ring Terminal

Torque Value

Dimensions

D (mm)

L (mm)

3kW DC24V

118A

1*2AWG

8.4

39.2

5Nm

3kW DC48V

71A

1*6AWG

8.4

39.2

5kW DC48V

118A

1*2AWG

8.4

39.2

Please follow below steps to implement battery connection:

1. Assemble battery ring terminal based on recommended battery cable and terminal size.

2. Connect all battery packs as units requires. It's suggested to connect at least 200Ah capacity battery for 3kW~5kW

model.

3. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are tightened

with torque of 2-3 Nm. Make sure polarity at both the battery and the inverter/charge is correctly connected and ring

terminals are tightly screwed to the battery terminals.

WARNING: Shock Hazard

Installation must be performed with care due to high battery voltage in series.

CAUTION!! Do not place anything between the flat part of the inverter terminal and the ring terminal.

Otherwise, overheating may occur.

CAUTION!! Do not apply anti-oxidant substance on the terminals before terminals are connected tightly.

CAUTION!!Before making the final DC connection or closing DC breaker/dis-connector; be sure positive (+)

must be connected to positive (+) and negative (-) must be connected to negative (-).

AC Input/Output Connection

CAUTION!! Before connecting to AC input power source, please install a separate AC breaker between inverter and AC

input power source. This will ensure the inverter can be securely disconnected during maintenance and fully protected

from over current of AC input. The recommended spec of AC breaker is 32A for 3kW and 50A for 5kW.

CAUTION!! There are two terminal blocks with "IN" and "OUT" markings. Please do not invert input and output

connectors.

WARNING! All wiring must be performed by a qualified personnel.

WARNING! It's very important for system safety and efficient operation to use appropriate cable for AC input connection,

lb reduce risk of injury, please use the proper recommended cable size as below.

Suggested cable requirement for AC wires

Model

Gauge

Torque Value

3KW DC24V

12 AWG

1.2~ 1.6Nm

3KW DC48V

12 AWG

1.4~ 1.6Nm

5KW DC48V

10 AWG

1.4~ 1.6Nm

Please follow below steps to implement AC input/output connection:

1. Before making AC input/output connection, be sure to open DC protector or dis-connector first.

2. Remove insulation sleeve 10mm for six conductors. And shorten phase L and neutral conductor N 3mm.

3. Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws. Be sure to

connect PE protective conductor @ ) first.

4. PEGround（Yellow -Green）

5. LLine（brown or black）

6. NNeutral（blue）

WARNING:

Be sure to that AC power source is disconnected before attempting to hard-wire it to the unit.

4. Then, insert AC output wires according to polarities indicated on terminal block and tighten terminal screws. Be sure to

connect PE protective conductor @ )first.

PEGround（Yellow -Green）

LLine（brown or black）

NNeutral（blue）

5. Make sure the wires are securely connected.

CAUTION: Important

Be sure to connect AC wires with correct polarity. If L and N wires are connected reversely, it may cause utility

short-circuited when these inverters are worked in parallel operation.

CAUTION: Appliances such as air conditioner are required at least 2~3 minutes to restart because it is required to have

enough time to balance refrigerant gas inside of circuits. If a power shortage occurs and recovers in a short time, it will

cause damage to your connected appliances. To prevent this kind of damage, please check manufacturer of air

conditioner if it is equipped with time-delay function before installation. Otherwise, this inverter/charger will trig

overload fault and cut off output to protect your appliance but sometimes it still causes internal damage to the air

conditioner.

PV Connection

CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between inverter and PV

modules.

WARNING! All wiring must be performed by a qualified personnel.

WARNING! It's very important for system safety and efficient operation to use appropriate cable for PV module connection.

To reduce risk of injury; please use the proper recommended cable size as below.

Model

Typical Amperage

Cable Size

Torque

3kW

60A

8AWG

2.0-2.4 Nm

5kW

80A

8AWG

2.0-2.4 Nm

PV Module Selection:

When selecting proper PV modules, please be sure to consider below parameters:

1. Open circuit Voltage (Voc) of PV modules not exceeds max. PV array open circuit voltage of inverter.

2. Open circuit Voltage (Voc) of PV modules should be higher than min. battery voltage.

3. Max. Power Voltage (Vmpp) of PV modules should be close to best Vmp of inverter or within Vmp range to get best

performance. If one PV module can not meet this requirement, it's necessary to have several PV modules in series

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