Omnik New Energy Hybrid Inverter User Manual

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User MANUAL

InfiniSolar Inverter 3KW

Omnikhyd Inverter 3KW

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1.0 Revision Summary

REVISION SECTION DESCRIPTION

Rev. A

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1. Scope of delivery

The manual provides safety guidelines, detailed planning and setup information. It provides procedures for installing the inverter and information about operation and troubleshooting of the unit. This manual does not contain details about photovoltaic (PV) panels. Please consult with system integrator for the information.

2. Important Safety Instructions

SAVE THESE INSTRUCTIONS — this user manual contains important instructions that shall be followed during the installation and maintenance of the InfiniSolar Inverters.

The following warnings identify conditions or practices that could result in personal injury or loss of life.

1) Before installing and using the Solar Inverter, read all instructions and cautionary markings on the inverter and all appropriate sections of this guide.

2) To reduce risk of fire hazard, do not cover or obstruct the inverter. 3) Under some conditions, the surface of Inverter case could be hot enough to cause skin

burns if accidentally touched. Ensure that the Inverter is located away from normal traffic areas.

4) Use only accessories recommended or sold by the installer. Otherwise, not-qualified tool may result in a risk of fire, electric shock, or injury to persons.

5) To avoid a risk of fire and electric shock, make sure that existing wiring is in good condition and the wire is not undersized. Do not operate the Inverter with damaged or substandard wiring.

6) Do not operate the Inverter if it has received a sharp blow, been dropped, or otherwise damaged in any way. If the Inverter is damaged, call for an RMA (Return Material Authorization)

7) Do not disassemble the Solar Inverter. It contains no user-serviceable parts. Attempting to service the Solar Inverter yourself may result in a risk of electrical shock or fire and will void warranty from manufacturer.

8) Authorized service personnel should reduce the risk of electrical shock by disconnecting both the AC and DC power from the Inverter before attempting any maintenance or cleaning or working on any circuits connected to the inverter. Turning off controls will not reduce this risk. Internal capacitors can remain charged for 5 minutes after disconnecting all sources of power.

9) Normally grounded conductors may be ungrounded and energized when a ground fault is indicated.

followed during the installation and maintenance of the Omnikhyd Inverters.

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3. Introduction

InfiniSolar inverter is a hybrid PV inverter which consists of Grid input, PV input, battery input, and AC output. The configuration is illustrated in Figure 1, showing the PV energy has been feed back to grid, or used to charge the battery. It can supply power to load from PV source, battery or both sources simultaneously.

Figure 1

Working Operations

1） Line mode（in Figure 2）

Figure 2

When the inverter is successfully connected to the grid, the inverter will operate in Line Mode.

Under this mode, when PV power is strong, the inverter will charge battery first and the remaining power will feed to the grid and load.

When PV energy is too weak to charge battery, the inverter will get power from the grid to charge battery.

Omnikhyd inverter is a hybrid PV inverter which consists of Grid input, PV input, battery

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2） BATTERY mode（ in Figure 3）

Figure 3

Under this mode, the inverter is not able to connect to the grid. Either solar power or battery power becomes major power source. When PV power is strong, the inverter will power load first and the remaining power will charge battery. When PV power is too weak to charge battery or power load, the inverter will convert battery power to supply loads.

3） PV charging mode（ in Figure 4）

Figure 4

When the inverter is not connected to the grid and there is no load connected, PV power will charge battery directly.

PV Compatibility

This hybrid inverter is designed to generate continuous power from three different power sources, PV solar modules (solar panels), battery, and the grid, depending on different power situations. When MPP input voltage of PV modules is within 150 VDC to 500 VDC, this hybrid inverter is able to generate power to feed the grid and charge battery. This inverter is compatible with PV module types of single crystalline and poly crystalline.

Note: When PV input voltage is lower than 250V, the power of inverter will de-rate.

Maximum Power Point Tracking (MPPT)

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The Solar Inverter is applied with Maximum Power Point Tracking (MPPT) technology to harvest the maximum amount of energy from the solar panel.

Measurement must be taken to ensure that the maximum open circuit voltage of 500 VDC is never exceeded. Please note that the maximum open-circuit voltage will occur at the lowest temperatures anticipated. You will find more detailed information about temperature dependency in the data sheet of the PV modules.

Standard Features

The Solar Inverter has the following standard features:

Provides comprehensive data with easy-to-read graphic design in LCD display Ground Fault Current Interruption, which is also known as RCD (Residual Current Device).

To prevent electrical hazard, a current transformer is used to monitor the different current between L and N. When current difference is larger than specified value stated in section “General Data”, inverter will cut its output to grid.

Bundled software to remote access the inverter data Provides standard RS485 communication and optional communication cards

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4. Equipment overview

FRONT VIEW

BACK VIEW

A: PV input connector B: Grid input connector C: battery input connector D: AC output connector E: Grounding F: RS-232 Communication port

B A C GHFED

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G: Intelligent slot H: Parallel connector

5. Installation

5.1 Installation location

Do not mount the inverter on flammable construction materials. Mount on a solid surface High temperature may cause a power reduction due to excessive heating. Install this inverter at eye level in order to allow the LCD display to be read at all times. Dusty conditions on the unit may impair the performance of this inverter.

5.2 Minimum requirements

For proper air circulation to dissipate heat, allow a clearance of approx. 20 cm to the side and approx. 50 cm above and below the unit.

For proper operation of this inverter, please use appropriate cables (cable length, cable cross-section) for grid impedance requirement at the supply terminal.

The recommended installation position is to be adhered to (vertical).

5.3 Installation

Installation to the wall should be implemented with the proper screws so that the solar inverter can be easily attached to the wall. After that, the device should be bolted on securely.

Assembly instructions:

Select an appropriate mounting location. Install the solar inverter in a protected area that is free of excessive dust and has adequate air flow. Do NOT operate it where the temperature and humidity is outside the specific limits. (Please check the specs for the limitations.)

Drill four holes in the marked locations with four screws. (see Fig. 1 & Fig. 2) Place the unit on the surface and align the mounting holes with four screws.

Check if the solar inverter is securely fixed.

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Figure 1 Figure 2

5.4 Ambient temperature

The solar inverter can be operated in an ambient temperature between 0℃ to +40℃.

5.5 Grid Connection

Measure grid voltage and frequency. It should be 230VAC, 50HZ, and single phase.

Open the breaker or fuse between the inverter and utility. Connect AC wires as table 1 list.

Connectors wire suggestion

PV PV+ A:+

12AWG or 4mm2 PV- A:-

GRID L B:L1N B:N

GROUND E

BATTERY BAT+ C:POS+

6AWG or 15mm2 BAT- C:NEG-

AC OUTPUT L D:L

12AWG or 4mm2 N D:NGROUND D:GROUND

WALL

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Table 1

To prevent risk of electric shock, ensure the ground wire is properly earthed before operating the solar inverter.

5.6 Connection of PV modules

Before the photovoltaic system is connected, the polarity of the PV voltage must be checked to ensure that it is correct. Connect PV wires as table 1 list.

Please ensure the following at all times:

That there is never any risk of anyone coming into contact with the solar inverter connection terminals, due to the risk of dangerous voltages across them.

Never disconnect running inverter from PV modules. If it’s necessary, first switch the grid off so that the solar inverter cannot absorb any further power.

The maximum input voltage of the solar inverter is 500V.

5.7 Connection of battery

Please ensure that he nominal battery voltage is 48Vdc first. Open the breaker or fuse between the inverter and battery. Connect battery wires as table 1

5.8 Connection of the AC output to the load

Connect output wires to the load as table 1.

6. Commissioning

6.1 Startup Procedure

Check the following requirements before commissioning:

Check DC voltage of PV modules Uncover the PV modules and expose them to full sunlight. The sunlight must be intense enough to produce the required PV output voltage. Measure Open Circuit DC Voltage of PV modules via DC positive (+) and DC negative (–) terminals. This voltage must be within 150 VDC to 500VDC to energize the inverter electronics and prevent damage to input circuitry of the.

Check AC utility voltage Switch ON the main and inverter Circuit breakers in the main utility electrical service panel.

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Using an AC voltmeter, measure the AC open circuit utility voltage between L and N. Ensure this voltage is at approximately nominal value expected for the local utility company.

Check battery voltage Ensure that battery voltage is at approximately nominal value expected for inverter(48Vdc).

The line breaker and battery breaker are correctly rated Before switching on the power, check all feeders and connections again. Start up the inverter by switching the breaker of PV, Grid and battery to “ON’ status.

The LCD will display the device state. Keep pressing the ON key continuously until the buzzer continuously sound. Then, the inverter will be turned on. If you want to turn off the inverter, simply keep pressing the OFF key continuously until the buzzer continuously sound.

7. Monitoring the Inverter

7.1 LCD Information Define

NOTICE: To accurately monitor and calculate the energy generation, please calibrate the timer of this unit via software every one month. For the detailed calibration, please check the user manual of bundled software. NOTIEC: There is a battery inside of control board. It’s recommended to replace the battery every 5 years. Check the replacement procedure in Maintenance section.

Display Function

Indicates AC input voltage or frequency. Vac: voltage, Hz: frequency

Indicates AC output power, voltage, frequency, or Load percentage. KW: power, Vac: Voltage, Hz: frequency, %: Load percentage

Indicates PV input voltage or power. Volt: voltage, KW: power

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Indicates battery voltage or percentage. Volt: voltage, %: percentage

Indicates charging current to battery.

Indicates that the warning occurs. Indicates that the fault occurs.

Indicates fault code in fault mode or WR for warning situation.

Indicates date and time, or the date and time you set for querying energy generated.

Indicates solar panels.

Indicates grid.

Indicates battery.

Indicates load.

Indicates energy generated.

7.2 Button Definition This display is operated by four buttons.

Button Function Up Press this button to select last selection or

increase value. Down If it’s in query menu, press this button to

select next selection or decrease value. Press this button to mute alarm in

standby mode. ENTER/ON Press to enter query menu.

If it’s in query menu, press this button to confirm selection or entry.

Keep press this button continuously until the buzzer long time sound, inverter turn on the AC output.

ESC/OFF Press to return to last menu. Keep press this button continuously until

the buzzer long time sound, inverter turn off the AC output.

NOTE: If backlight shuts off, you may activate it by pressing any button. When an error occurs, the buzzer will continuously sound. You may press any button to mute it.

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7.3 Query Menu Operation This display shows current values of your system. This displayed values can be changed in query menu via button operation. Press “Enter” button to enter query menu. There are seven query selections:

Grid voltage or frequency of AC input Frequency, voltage, power or load percentage of AC output Input voltage or power of PV input. Battery voltage or capability percentage. Date and time. Today or total energy generated. Mode of query energy generated.

Setting Display Procedure

Input voltage or frequency of AC input Procedure

1.Enter

Up

Down

Up

Down

EnterEnter

2.

3.

4.

5.

Frequency, voltage, power or percentage of AC output Procedure

1.Enter

Up

Down

Up

Down

EnterEnter2.3.

4.

5.

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Input voltage or power of PV input. Procedure

1.Enter

Up

Down

Up

Down

EnterEnter2. 3.

4.

5.

Battery voltage or percentage.

Procedure

1.Enter

Up

Down

Up

Down

EnterEnter

2.

3.

4.

5.

Date and time.

Procedure

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Today or total energy generated. Procedure

Mode of query energy generated.

Energy generation display of selected day Procedure:

LCD Display:

Energy generation display of selected month Procedure:

LCD Display:

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Energy generation display of selected year Procedure:

1.Enter

Up

Down

Up

Down

Enter

2.

3.

4.5.Enter

Flashes

Enter Up Down

Enter

Esc

Returns to main menu

Sets year

LCD Display:

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7-4. Device status & Display Status LCD DisplayPV module and battery are connected and working well, but it’s not connected to grid. Inverter is charging battery from PV energy.

The utility icon flashes. PV module and battery are connected and working well, but it’s not connected to grid. Inverter is powering loads from PV and battery energy.

The utility icon flashes. Battery is charging or discharging base on the PV input power.

PV module is feeding power to the grid and the inverter is not connected to battery.

The battery icon flashes.PV module is feeding power to the grid and load. The inverter is not connected to battery.

The battery icon flashes.The inverter is not connected to battery. When PV energy is weak, PV module and the utility will power the load at the same time.

The battery icon flashes.When PV energy is strong, PV module is feeding power to the grid, load and charging battery.

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WARNING: There are no user-replaceable parts inside of the inverter. Do not attempt to service the unit yourself.

When PV energy is weak, PV module and the utility will power the load and charge battery.

There is no PV power available and inverter is not connected to grid. All loads are powered from battery energy.

The utility icon flashes. When PV energy is loss, the utility is powering the load and charging battery.

The PV icon flashes. When there is load connected, the utility will power the load and the load icon will show up in the LCD display.

8. Maintenance & Cleaning

Check the following points to ensure proper operation of whole solar system at regular intervals. Ensure the inverter’s inlet and outlet is clean all the time. Clean the PV modules, during the cool time of the day, whenever it is visibly dirty. Periodically inspect the system to make sure that all wires and supports

are securely fastened in place.

9. Warning Situation

There are 5 situations defined as warnings. When a warning situation occurs, icon will flash and the fault code area will display “WR” wordings.

No PV module is connected flash failure Inverter initial failure Line lossIslanding is detected

Fault Reference Codes When a fault occurs, the icon will flash as a reminder. See below for fault codes for reference.

Fault event Fault code Icon(flashing)

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Over voltage on Bus 1 Under voltage on Bus 2 Time out for Bus soft start 3 Time out for Inverter soft start 4 Inverter over current 5 Over temperature 6 Relay fault 7 Output current sensor failure 8 High voltage on PV module 9 Power down 10 DC input over current 11 GFCI failure 12 PV insulation failure 13 Inverter DC current over 14 Line value consistent fail between MCU & DSP 15 GFCI sensor failure 16 Connection failure between MCU & DSP 17 Communication failure between MCU & DSP 18 Ground loss 19 Discharge failure 20 Time out for discharge soft start 21 Battery over voltage 22 Over load 23

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10. Specifications Item Specification Comments

AC input data AC start voltage 120~140Vac Auto restart voltage 194 Vac Tolerance ±3% AC input voltage range 184~265 Vac AC input voltage comeback value 194Vac / 255Vac AC input frequency range 47.5 ～ 50.2 Hz Hz AC input frequency comeback value 47.6Hz / 50.1Hz Max. AC Input current 20Amp

PV input data Max. DC Power 3200W Nominal DC voltage 360Vdc Max. Input voltage (Maximum PV open voltage) 500Vdc

System start-up voltage 116V ± 10V whether PV establish control power Initial feeding voltage 150V ±5%

Working voltage range 100(±5%) ~ 500 Vdc (-5%+0%)

Which is the DC voltage range that inverter can feed power to grid

MPPT voltage range 250 ~ 450Vdc Shutdown voltage <70V typical Max. DC Input current 13Amp

Converting Power Vs PV Voltage

0

0.2

0.4

0.6

0.8

1

1.2

100 150 200 250 300 350 400 450 500

PV Voltage(V)

Converting

Power(Percentage) The relation of input PV voltage and

output feed power is shown in figure. Once input V is less than 250V , the relation of I/P V and load % is

iVLoad ×= 4.0% Once input V is higher than 450V ,

the relation of I/P V and load % is

iVLoad )450(016.01% −×−=

Grid Output data Nominal output voltage 230Vac Max feeding power 3000W

Output voltage range 184 ~ 265 Vac Output voltage comeback value 194Vac / 255Vac

Operational frequency range 47.5 ～ 50.2 Hz Output frequency comeback value 47.6/50.1

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Max output current 13.6A Under the output voltage is 220VAC O/P current distortion <3% Under utility voltage THD<3% Power Factor >0.99

Battery mode output data Nominal output power 3000W Wave form Pure sine wave Nominal output voltage 220Vac Tolerance +1% Nominal output frequency 50 Hz Tolerance + 0.1Hz

O/P voltage distortion <3% for linear load <5% for non- linear load

O/P DC component <100mV Transient O/P voltage range 220+/-10% Transient Time 120ms

Maximum Conversion Efficiency (DC/AC) 90% At 50% load

Overload capability

Grid Mode > 110%

Overload alarm for 30s, and then will switch to fault mode. If user decrease the load <100% rating, the overload alarm can release.

> 300% Switch to fault mode immediately

Battery Mode > 110%

Overload alarm for 30s, and then will switch to fault mode. If user decrease the load <100% rating, the overload alarm can release.

> 300% Switch to fault mode immediately

Overload (%)

Overload

Time

Omnik New Energy Hybrid Inverter User Manual

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