grid tied inverter 1,5 / 3 / 5 kw - microcare solar...

Grid Tied Inverter 1,5 / 3 / 5 kW User Manual

Manual Version: GTI-1,5-3-5kW-2016-2

Table of Contents

1. SURGE PROTECTION ..................................................................................................................... 1

2. UNPACKING AND INSPECTION ...................................................................................................... 2

2.1 Unpacking and Inspection - 1,5kW Inverter ................................................................................. 2

2.2 Unpacking and Inspection - 3kW Inverter .................................................................................... 2

2.3 Unpacking and Inspection - 5kW Inverter .................................................................................... 2

3. MPORTANT INFORMATION AND SAFETY INSTRUCTIONS .......................................................... 3

4. INTRODUCTION ............................................................................................................................... 4

4.1 General Description..................................................................................................................... 4

4.2 Key Features ............................................................................................................................... 4

4.3 1,5 kW Grid Tied Inverter Front & Bottom View ........................................................................... 5

4.4 3 kW Grid Tied Inverter Front & Bottom View .............................................................................. 6

4.5 5 kW Grid Tied Inverter Front & Bottom View .............................................................................. 7

5. INVERTER INSTALLATION .............................................................................................................. 8

5.1 Planning the Installation .............................................................................................................. 8

5.2 Installing the 1,5kW Inverter Mounting Bracket ............................................................................ 9

5.3 Installing the 3 & 5 kW Inverter Mounting Bracket ......................................................................10

6. GENERAL WIRING INFORMATION ................................................................................................11

6.1 Earthing The Equipment .............................................................................................................11

6.2 AC Wiring ...................................................................................................................................11

6.3 AC Wiring and Circuit Breaker Sizes ..........................................................................................11

6.4 Inverter AC wiring - 1,5k & 3kW.................................................................................................11

6.5 Inverter AC wiring - 5kW ...........................................................................................................11

6.6 DC Wiring ( PV Array) ................................................................................................................12

6.6.1 DC Cabling termination .......................................................................................................12

6.7 Connecting the PV array to the inverter ......................................................................................13

6.8 Basic System Diagram - 1 Grid Tied Inverter.............................................................................14

6.9 Basic System Diagram – 2 Grid Tied Inverters Connected in Parallel ........................................15

7. INVERTER OPERATION..................................................................................................................16

7.1 Front LCD Display Panel and Description ..................................................................................16

7.2 CHECKS PRIOR TO START-UP ...............................................................................................17

7.3 START-UP PROCEDURE ..........................................................................................................17

7.4 SWITCHING THE INVERTER OFF ............................................................................................17

8. INVERTER MENU ............................................................................................................................18

9. TROUBLESHOOTING ......................................................................................................................19

10. SPECIFICATIONS - 1,5kW INVERTERS.......................................................................................20

11. SPECIFICATIONS - 3kW INVERTERS .........................................................................................21

12. SPECIFICATIONS - 5kW INVERTERS .........................................................................................22

13. DESTRIER ELECTRONICS LIMITED CARRY- IN WARRANTY ...................................................23

14. REGISTRATION OF MY MICROCARE PRODUCT .......................................................................24

1

SURGE PROTECTION

1. SURGE PROTECTION

Please Be Aware

Warranty will be null and void if panel surge protection is not installed with all

grid tied inverter installations.

The following surge protection boxes are available

Model Description

1,5kW 1 String High Voltage Surge Protection Box

3kW 2 String High Voltage Surge Protection Box

5kW 3 String High Voltage Surge Protection Box

2 String Surge Protection Box

2

UNPACKING AND INSPECTION

2. UNPACKING AND INSPECTION

2.1 Unpacking and Inspection - 1,5kW Inverter

Upon receipt the unit should be unpacked and inspected for any damage during shipment. Verify that the contents of the box include:

1 x GRID TIED Inverter 1 x MC4 Connector Set 4 x White 2-Way Expansion Plugs 4 x Self Tapping Screws 4 x Flat Washers 2 x Stainless Steel Bolts M6x8 2 x Stainless Steel Bolts M6x14 1 x Inverter Mounting Bracket 1 x Installation Manual 1 x AC Power Connector

2.2 Unpacking and Inspection - 3kW Inverter


1 x GRID TIED Inverter 2 x MC4 Connector Sets 4 x White 2-Way Expansion Plugs 4 x Self Tapping Screws 4 x Flat Washers 2 x Stainless Steel Bolts M6x8 2 x Stainless Steel Bolts M6x14 1 x Inverter Mounting Bracket 1 x User Manual 1 x AC Power Connector

2.3 Unpacking and Inspection - 5kW Inverter


1 x GRID TIED Inverter 3 x MC4 Connector Sets 4 x White 2-Way Expansion Plugs 4 x Self Tapping Screws 4 x Flat Washers

2 x Stainless Steel Bolts M6x8 2 x Stainless Steel Bolts M6x14 1 x Inverter Mounting Bracket 1 x User Manual 1 x AC Power Connector

3

MPORTANT INFORMATION AND SAFETY INSTRUCTIONS

3. MPORTANT INFORMATION AND SAFETY INSTRUCTIONS

INFORMATION

Installers should be qualified electricians or technicians The installation information in the manual is for information purposes only. The monitoring and operation information in this manual is intended for anyone who needs to operate the inverter. Read the instructions carefully before installing and operating the Inverter. Inverter connection and installation instructions must be followed. The unit should only be opened by skilled personal. To reduce risk of electric shock, disconnect all wiring before making any attempt to maintain or cleaning the unit. Turning off the INVERTER will not reduce this risk. Keep the Inverter clean and dry. The Inverters should be installed in a ventilated and dry area. The mounting surface should be able to support the weight of the inverter. Mount the inverter vertically. Do not install the Inverter where it would be exposed to direct sunlight. Do not remove the inverter casing. Keep the Inverter away from heat emitting sources. Do not block airflow over the inverter heatsink. Do not expose the Inverter to corrosive or any corrosive gasses. Install the inverter away from any explosive gasses. Ambient temperature: 0°C – 40°C The INVERTER must be used with a PV array supply of nominal voltage that matches the inverter specification. Sketches are intended for illustrative purposes only and is not intended to provide an electrical design.

WARNING

High AC voltage is present and is capable of causing severe electrical shock and injury.

INTRODUCTION

4

4. INTRODUCTION

4.1 General Description The Microcare Grid Tied Inverter is applicable to various rooftop and small scale photovoltaic

grid connected applications. This series is transformerless and has a wide range of MPPT

input voltage. It’s maximum conversion efficiency and MPPT tracking accuracy reach 97.6 %

and 99.5 % respectively. The maximum DC voltage reaches 550V and the unit comes with

integrated DC switch and waterproof direct plug-in terminals. The LCD display facilitates easy

operation and the unit has an overvoltage, short-circuit, overload and overheating protection

functions. Its IP65 protection degree will ensure that it operates well in various tough

environments.

4.2 Key Features Only produces power when connected to the Grid

IP65 Rated enclosure

DC Disconnect switch

LCD display

RS485 interface

RC4 PV connection inputs

Short Circuit protection

Residual current protection

DC over-voltage protection

Over-temperature protection

Inverter input/output voltage and frequency monitoring

Over-current protection

Anti-islanding protection

GFI protection optional

Remote monitoring optional

7 Year warrantee

5

INTRODUCTION

4.3 1,5 kW Grid Tied Inverter Front & Bottom View

1 - Inverter Front 2 - LCD display & Keypad 3 - Inverter Bottom 4 - DC Main Switch 5 - PV - Connectors 6 - PV+ Connectors 7 - RS232 8 - RS485 9 - AC Power Connection

3 4 5 6 7 8 9

6

INTRODUCTION

4.4 3 kW Grid Tied Inverter Front & Bottom View

1 - Inverter Front 2 - LCD display & Keypad 3 - Inverter Bottom 4 - DC Main Switch 5 - PV - Connectors 6 - PV+ Connectors 7 - RS232 8 - RS485 9 - AC Power Connection

3 4 5 6 7 8 9

7

INTRODUCTION

4.5 5 kW Grid Tied Inverter Front & Bottom View

1. Inverter Front 2. LCD display & Keypad 3. Inverter Bottom 4. DC Main Switch 5. PV - Connectors 6. PV+ Connectors 7. RS232 8. RS485 9. AC Power Connection

3 4 5 6 7 8 9

8

INVERTER INSTALLATION

5. INVERTER INSTALLATION Consider the following when installing the inverter.

5.1 Planning the Installation Location

Find a suitable temperature resistant surface to mount the inverter.

Provide enough space for the routing of external wiring and additional accessories.

The mounting surface must support the weight of the inverter.

Exposure to saltwater is particularly destructive.

Do not mount the inverter in a closed container.

Unrestricted airflow is required for the inverter to operate at optimal efficiency.

Ensure an unrestricted clearance at the bottom, left and right side of the inverter as below.

Orientation The unit must be mounted in a vertical position against the wall.

Temperature Away from sources of high temperature.

Height Install the inverter so that the display is at eye level.

30cm

50cm

30cm 30cm

9


5.2 Installing the 1,5kW Inverter Mounting Bracket

Find a suitable temperature resistant surface to mount the inverter


Provide enough space for the routing of external wiring

Check for existing electrical or plumbing prior to drilling holes in the walls.

Position the wall mounting bracket against the wall at a height where the display of the Inverter is at eye level.

Level the bracket against the wall and mark the 4 holes on the surface.

Drill 4 holes into the wall using a 8mm drill at least 45mm deep.

Secure the bracket to the wall using the 4 supplied screws and wall plugs.

Tighten the screws firmly.

Mount the inverter on the wall bracket as per below

Slowly pull the inverter vertically downwards until the inverter’s bottom plate touches the mounting bracket’s bottom.

Fix the inverter to the mounting bracket by screwing it to the bracket.

10


5.3 Installing the 3 & 5 kW Inverter Mounting Bracket

Find a suitable temperature resistant surface to mount the inverter


Provide enough space for the routing of external wiring

Check for existing electrical or plumbing prior to drilling holes in the walls.

Position the wall mounting bracket against the wall at a height where the display of the Inverter is at eye level.

Level the bracket against the wall and mark the 4 holes on the surface

Drill 4 holes into the wall using a 8mm drill at least 45mm deep.

Secure the bracket to the wall using the 4 supplied screws and wall plugs.

Tighten the screws firmly.

Mount the inverter on the wall bracket as per below

Slowly pull the inverter vertically downwards until the inverter’s bottom plate touches the mounting bracket’s bottom.

Fix the inverter to the mounting bracket by screwing it to the bracket.

11

GENERAL WIRING INFORMATION

6. GENERAL WIRING INFORMATION

Wiring must be performed by qualified personnel / certified electrician. .

The line voltage “AC” applied must comply with the inverter’s specified input voltage.

The AC and DC connections are located at the bottom of the inverter.

Make sure the DC Switch at the bottom of the inverter is in the OFF position before attempting any wiring. .

6.1 Earthing The Equipment

The external frame of the panel array should be grounded.

6.2 AC Wiring

The inverter AC wiring must be sized correctly and fitted with appropriate circuit breakers.

6.3 AC Wiring and Circuit Breaker Sizes

Table 6-1 : AC Wiring - Wiring and circuit breakers

Model Max Circuit Breaker Size Min Wiring Size

1,5kW 10A 1,5mm²

3kW 20A 2,5mm²

5kW 25A 3,5mm²

6.4 Inverter AC wiring - 1,5k & 3kW

Feed the AC Input wiring through the compression nut and shell. “Max 3,5mm² wire” Strip 7mm insulation from the end of each wire. Individually insert the bear end of the: Live In, Neutral In and Earth Wires fully into the correct terminal slots till it stops and tighten the screws firmly. Tighten the shell and compression nut firmly.

6.5 Inverter AC wiring - 5kW

Feed the AC Input wiring through compression nut and shell. “Max 3,5mm² wire Strip 7mm insulation from the end of each wire. Individually insert the bear end of the: Live In, Neutral In and Earth Wires fully into the correct terminal slots till it stops and tighten the screws firmly. Tighten the shell and compression nut firmly..

12


6.6 DC Wiring ( PV Array)

DC input Specifications

Model Max Input DC PV Array Current

Max Input Voltage

Max PV Input Power

1,5kW 9A 450V 1750W

3kW 13A 500V 3500W

5kW 18A 550V 5200W

6.6.1 DC Cabling termination

The cables from the PV array must be fitted with the supplied MC4 connectors. Using a multi-meter check the polarity of the PV cabling and label the Positive and negative cable. Follow the instructions below on how to terminate MC4 connectors:

MC4 connectors are most suitable for 4 & 6 mm² wire.

Strip 7mm of the wire insulation.

Insert the bare copper wire into the crimping area of the MC4 pin and crimp by using the correct crimping tool.

Insert the crimped pin/wire through the cable gland nut and compression ring into MC4 connector. The pin will lock into the housing. Tighten the cable gland nut firmly

Female Connector termination – Positive “+”

Male Connector Termination – Negative “-“

13


6.7 Connecting the PV array to the inverter

Ensure that the PV Array open circuit voltage does not exceed the maximum rated input voltage of

the inverter.

Turn the inverter DC disconnect switch to the OFF position.

Switch off all the AC circuit breakers connected to the output of the inverter.

Using a multi-meter, switched to DC, measure the DC voltage supplied from the PV array.

Ensure that the PV array voltage is within the specified range.

Remove the sealing caps from the inverter solar input connectors.

Connect the PV string MC4 connectors to the corresponding inputs on the inverter.

14


6.8 Basic System Diagram - 1 Grid Tied Inverter

15


6.9 Basic System Diagram – 2 Grid Tied Inverters Connected in Parallel

16

INVERTER OPERATION

7. INVERTER OPERATION

7.1 Front LCD Display Panel and Description

Figure 7-1: LCD Display & Keypad

The front Panel Display/Keypad indicates the Inverter’s operational information

Description

No Name Function description

1 LCD Screen Displays the current status, history information and fault codes

2 LED Indicators Indicates NORMAL and FAULT state

3 Button Navigates the LCD menu

Inverter Status LED’s

LED Status Description

Normal

On

Inverter is producing power and feeding the Grid

Normal

On

Fault occurred

Normal Fault

Off Off

Inverter is not energised

The state of the inverter is displayed on the first line of the display. The Microcare Grid tie inverter operates in the following four states:

Standby: The inverter is standing by to be initialised.

Waiting: The inverter is waiting for the grid to be connected.

Normal operation: The inverter is operating normally.

Fault state: The inverter has detected a fault.

2 1

2

17

7.2 CHECKS PRIOR TO START-UP

Ensure that solar panel’s operation specifications are within the inverters safe operation range.

Check if the inverter’s operation specifications are within the local grid regulations.

Ensure the inverter is securely mounted.

Check that the DC terminals and solar panels are correctly connected.

Check that the AC terminal and grid connections are correctly connected.

Check that the inverter cover is securely tightened and sealed.

7.3 START-UP PROCEDURE

Please note: The inverter will only start up when the PV Array is producing enough energy and the Inverter is connected to the Grid

Close the external AC circuit breaker.

Turn the inverter DC switch to the ON position.

Figure 7-2: Inverter DC Switch

7.4 SWITCHING THE INVERTER OFF Turn the external AC circuit breaker off.

Turn the Inverter DC switch to the off position.

Inverter DC Switch

18

INVERTER MENU

8. INVERTER MENU

Use the button to view the menu displays on the LCD screen explained below

Displayed on the second line

Displayed info Details

User: xxxx Displays the user type for the inverter

Spec: xxxx Displays the spec the inverter is running at (Default VDE)

Model: x.xKw Displays the model number of the inverter (1500, 3000, 5000)

SW Version: XX.XX Displays the current software version installed (5.06)

Etotal: XXXKwh Displays the total amount of power the inverter has produced

Etoday: XX.XKwh Displays the amount of power the inverter has produced today

Ttoday: XXhxxmin Displays the time the inverter has been operating today

PV: xxxV BUS: xxxV PV: Displays the solar panel voltage BUS: Displays the voltage on the MPPT BUS

AC: xxxV xx.xhz AC: Displays the voltage of the grid Hz: Displays the frequency the grid is operating at.

SN: xxxxxxxxxxxxxxx SN: Displays the serial number of the inverter

19

TROUBLESHOOTING

9. TROUBLESHOOTING

System Fault and Error Code Possible Remedy

Disconnect Grid Grid has failed : Load Shedding AC breaker is disconnected

Establish if the Grid has failed If the AC breaker is OFF, turn it ON Check the AC breaker

Low Isolation The ground wire at the AC terminal is not connected or making poor contact

Check if the ground wire is making contact

High PV Voltage The PV array input voltage exceeds the specified range

Check if the DC input voltage is within specification

High Ground I Possible AC leakage

Disconnect AC breaker and turn the DC switch off. Check if there are damages to the cables and circuit breakers.

High Temperature Ambient temperature of the inverter is to high

No Display on LCD Screen Check if the DC Switch is on

Fault states

Displayed fault Details

System Fault

Disconnect Grid The inverter is not connected to the grid.

Grid V Fault The grid voltage is out of range.

Grid F Fault The grid frequency is out of range

Low Isolation The input isolation is too low.

High PV Voltage PV input voltage to high

High Ground 1 The ground fault circuit interrupter has tripped.

High Temperature The inverter is in thermal shutdown and will resume when cool down.

EEPROM Damaged The inverters memory has been damage and the long may be lost.

Inverter Fault

Please Initiate System has not been initiated and need programming

GFCI Damaged The inverters ground fault circuit interrupter is damaged.

Sensor Damaged The inverters output ac sensor is damaged

SCI Damaged The inverters processors are not communicating correctly

Not Consistent The inverters processors data are conflicting.

High DC INJ The output of the DC MPPT is too high.

Relay Damaged The inverters relay is faulty.

High Bus Voltage The DC Bus voltage is too high.

Auto test failed The inverter has failed its auto test and has an internal fault.

2.5V Ref fault There is a problem with the 2.5v Reference on the processor board.

20

SPECIFICATIONS - 1,5kW INVERTERS

10. SPECIFICATIONS - 1,5kW INVERTERS Specifications 1500 Watt Grid Tied Inverter

DC Input data

Maximum DC Input Power 1750W

Maximum .Dc Input Voltage (Voc) 450V

Recommended System Voltage (Vmp) 360V

System Start-Up Voltage, No Load 150V

PV Input Voltage Range MPPT 110V-430V

Full Load Voltage Range MPPT (Vmp) 200V-360V

Maximum Input Current (Imp) 9A

DC Voltage Ripple < 5%

AC Output Data

Nominal AC Output 1500W

Maximum AC Power 1650W

Maximum Output Current 9A

THD Of AC Current < 3%

Nominal Grid Voltage 220V/230V/240V

Nominal Grid Frequency 50Hz

Power Factor (Cos Φ） 0.99

Number Of Feed-In Phases single-phase

Efficiency

Maximum Efficiency 96,50%

MPPT Efficiency 99.50%

Device Protection

Reverse Polarity Protection short-circuit diode

DC Switch Yes

Short-Circuit Proof Yes

Ground Fault Monitoring Yes

Grid Monitoring Yes

Over-Voltage Protection Yes

Over-Current Protection Yes

Active Anti-Islanding Yes

Ground Fault Current Detection Yes

General Data

Dimensions (Height X Width X Depth) 500/300/155mm

Weight 14kg

Noise Level <30 dB

Power Consumption Night < 0.2W

Power Consumption Standby 4W

Cooling free convection

Features

On/Off Mode Auto

Display LCD/LED

Accessory Interfaces RS485/RS232

21

SPECIFICATIONS - 3kW INVERTERS

11. SPECIFICATIONS - 3kW INVERTERS Specifications 3000 Watt Grid Tied Inverter

DC Input data

Maximum DC Power 3160W


Recommended System Voltage 383V


PV Voltage Range MPPT 110V-480V

Full Load Voltage Range MPPT 250V-400V



AC Output Data









Efficiency



Device Protection


DC Switch Yes



Grid Monitoring Yes





General Data


Weight 18,4kg

Noise Level <30 dB




Features

On/Off Mode Auto

Display LCD/LED


22

SPECIFICATIONS - 5kW INVERTERS

12. SPECIFICATIONS - 5kW INVERTERS Specifications 5000 Watt Grid Tied Inverter

DC Input data

Maximum DC Power 5200W


Recommended System Voltage 383V


PV Voltage Range MPPT 110V-530V

Full Load Voltage Range MPPT 280V-440V



AC Output Data









Efficiency



Device Protection


DC Switch Yes



Grid Monitoring Yes





General Data


Weight 18,4kg

Noise Level <30 dB




Features

On/Off Mode Auto

Display LCD/LED


23

DESTRIER ELECTRONICS LIMITED CARRY- IN WARRANTY

13. DESTRIER ELECTRONICS LIMITED CARRY- IN WARRANTY

Destrier Electronics warrants this range of Grid Tied Inverters against defects in workmanship and materials, fair wear and tear accepted, for a period of 7 (Seven) years from the date of delivery/collection for all equipment and is based on a carry-in basis. Where the installation of the product makes it impractical to carry-in to our workshops, Destrier Electronics reserves the right to charge for travel time and kilometres travelled to and from the site where the product is installed.

During this warranty period, Destrier Electronics will, at its own discretion, repair or replace the defective product free of charge. This warranty will be considered void if the unit has suffered any physical damage or alteration, either internally or externally, and does not cover damages arising from improper use such as, but not exclusive to:

• Reverse of battery polarity. • Inadequate or incorrect, connection, installation or use of the product and/or of its accessories. • Mechanical shock or deformation. • Altering the product or software. • Contact with liquid or oxidation by condensation. • Use in an inappropriate environment (dust, corrosive vapour, humidity, high temperature,

biological infestation.) • Breakage or damage due to lightning, surges, spikes or other electrical events. • Connection terminals and screws destroyed or other damage such as overheating due to

insufficient tightening of terminals. • When considering any electronic breakage except due to lightning, reverse polarity, over-

voltage, etc. the state of the internal control circuitry determines the warranty.

This warranty will not apply where the product has been misused, neglected, improperly installed, or repaired by anyone else than Destrier Electronics or one of its authorised Qualified Service Partners. In order to qualify for the warranty, the product must not be disassembled or modified. Repair or replacement are our sole remedies. Destrier Electronics shall not be liable for damages, whether direct, incidental, special, or consequential, even caused by negligence or fault. Destrier Electronics owns all parts removed from repaired products. Destrier Electronics uses new or re-conditioned parts made by various manufacturers in performing warranty repairs and building replacement products. If Destrier Electronics repairs or replaces a part of a product, its warranty term is not extended. Removal of serial nos. may void the warranty.

All remedies and the measure for damages are limited to the above. Destrier Electronics shall in no event be liable for consequential, incidental, contingent or special damages, even if having been advised of the probability of such damages. Any and all other warranties expressed or implied arising by law, course of dealing, course of performance, usage of trade or otherwise, including but not limited to implied warranties of merchantability and fitness for a particular purpose, are limited in duration to a period of 7 (Seven) years from the date of purchase.

Life Support Policy: As a general policy, Destrier Electronics does not recommend the use of any of its products in life support applications where failure or malfunction of the Destrier Electronics product can be reasonably expected to cause failure of the life support device or to significantly affect its safety or effectiveness.

Destrier Electronics does not recommend the use of any of its products in direct patient care. Destrier Electronics will not knowingly sell its products for use in such applications unless it receives in writing assurances satisfactory to Destrier Electronics that the risks of injury or damage have been minimised, the customer assumes all such risks, and the Liability of Destrier Electronics is adequately protected under the circumstances.

Caution: Our products are sensitive. While all care is taken by us to dispatch goods with adequate packaging, Destrier Electronics is not responsible for any damages caused to products after they have left our premises.

24

14. REGISTRATION OF MY MICROCARE PRODUCT

Product Serial Number: Product Description: Date Purchased

Where was the Inverter purchased

Company Name Contact Person Contact Number E-mail Address

Installation Company Information:

Company Name Contact Person Contact Number E-mail Address

Details of Product Owner

Name & Surname Address City & Province Contact Number E-mail Address Date Installed Microcare: 1st Floor, Neave Industrial Park, Korsten, Port Elizabeth P.O.Box 7227, Newton Park, 6055 Tel: 041 453 5761, Fax: 041 – 453 5763 Technical Support e-mail: [email protected] Website: www.microcare.co.za Registration by fax: 041 – 453 5763 Registration by e-mail: [email protected] Online Registration: www.microcare.co.za/register-my-product

mailto:[email protected]

http://www.microcare.co.za/

mailto:[email protected]

http://www.microcare/

grid tied inverter 1,5 / 3 / 5 kw - microcare solar...

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