REFUsol Solar Inverters - Advanced Energy · 2.2 15BProper Usage The REFU sol photovoltaic inverter...

BA_REFUSOL333K_V02.5_EN

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REFUsol Solar Inverters

REFUsol 333K

Operating Instructions

Version 02.5

REFUsol Photovoltaic Inverter REFUsol 333K

Operating Instructions

Version 01 (Provisional as at 06.06.2012)


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Title REFUsol Photovoltaic Inverter

REFUsol 333K

Type of Documentation Operating Instructions

Purpose of

Documentation

This document explains the REFUsol 333K.

It provides information

on operating the product,

on error messages and possible causes, as well as details on how to

correct errors.

Published by

REFUsol GmbH

Uracher Straße 91 D-72555 Metzingen

www.refusol.com

Legal Disclaimer

All details in this documentation have been compiled and checked

with the utmost care. Nevertheless, faults or deviations based on technical progress cannot be completely excluded. We therefore accept no liability for completeness or correctness.

The relevant up-to-date version can be obtained from www.refusol.com.

Copyright

The information contained in this documentation is the property of REFUsol GmbH. Using and publicizing this documentation, including

only extracts, requires the written consent of REFUsol GmbH.

Trademark REFUsol® is a registered trademark of REFUsol GmbH.

Issue ID Remarks

BA_REFUSOL333K_V02.5_EN Last updated 2013/09

http://www.refusol.com/



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Table of Contents

1 0BAbout these Operating Instructions......................................................................................5

1.1 12BSymbols and Markup ...................................................................................................5

1.2 Warning Notices ..........................................................................................................5

1.2.1 50BLayout of a Warning Notice .........................................................................................5

1.2.2 Categories of Warning Notices ....................................................................................5

1.3 13BInformation ..................................................................................................................6

2 1BSafety Information .................................................................................................................7

2.1 14BIntroduction .................................................................................................................7

2.2 15BProper Usage ..............................................................................................................7

2.3 17BTarget Group ...............................................................................................................7

2.4 6BPersonnel Requirements .............................................................................................7

2.5 Disclaimer ...................................................................................................................7

2.6 18BPreventing Electric Shock ............................................................................................8

2.7 Protection against Electrostatic Discharge (ESD) .........................................................8

2.8 19BProtection against Magnetic and Electromagnetic Fields during Operation and

Assembly .................................................................................................................................8

2.9 20BPreventing Burns Caused by Contact with Hot Parts ....................................................9

2.10 21BProtection during Handling and Assembly ....................................................................9

2.11 Disposal .................................................................................................................... 10

2.12 23BFeed-in and grid safety management......................................................................... 10

3 2BDescription of the REFUsol 333K ........................................................................................ 11

3.1 24BHow It Works ............................................................................................................. 11

3.2 25BBasic Design ............................................................................................................. 12

3.3 26BGraphical display and control panel ........................................................................... 13

3.4 32BStandard Display ....................................................................................................... 14

3.5 Yield Data Display ..................................................................................................... 15

3.6 Standardized Yield Data Display................................................................................ 15

3.7 33BOverview of Menus.................................................................................................... 17

3.8 Password Entry ......................................................................................................... 20

3.9 27BInternal Data Logger .................................................................................................. 21

4 3BDecommissioning and Recommissioning the Inverter ...................................................... 22

4.1 Use of the discharge unit PM932 ............................................................................... 22

4.2 Disconnection / connection of the supply voltage ....................................................... 23

4.2.1 Switching off the Supply Voltage ............................................................................... 23

4.2.2 Switching on the Supply Voltage ............................................................................... 24

4.3 Automatic Activation of Feed-In ................................................................................. 25

4.4 Switching off Feed-In ................................................................................................. 27


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5 5BTroubleshooting .................................................................................................................. 28

5.1 39BSelf-Test Error Messages .......................................................................................... 28

5.2 40BTransient Failure ....................................................................................................... 28

5.3 41BFaults ........................................................................................................................ 28

5.4 42BAcknowledging Faults................................................................................................ 28

5.5 Return of the solar inverter ........................................................................................ 28

5.6 43BList of Fault Messages............................................................................................... 29

6 6BMaintenance and Cleaning .................................................................................................. 35

6.1 44BMaintenance Instructions ........................................................................................... 35

7 7BTechnical Data ..................................................................................................................... 36

7.1 45BTechnical Specifications for REFUsol 333k Solar Inverter ......................................... 36

7.2 Dimensions of REFUsol 333k Solar Inverter ............................................................. 38

7.3 8BDecommissioning/Deinstallation ................................................................................ 39

7.4 48BDecommissioning and Deinstalling the Solar Inverter ................................................. 39

7.5 49BDisposing of the Inverter ............................................................................................ 39

8 9BContact ................................................................................................................................. 40

9 10BCertificates ........................................................................................................................... 41

10 11BNote ...................................................................................................................................... 42


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1 0BAbout these Operating Instructions These operating instructions form part of the product

Read the operating instructions carefully before using the product.

Keep the operating instructions readily available with the device for the entire service life of

the product.

Provide all future users of the device access to the operating instructions.

1.1 12BSymbols and Markup

Pre-requisite

One-step operating instruction

1. Multiple-step operating instruction

Bulleted list

Highlighting Highlighting within a text

Result

1.2 Warning Notices

1.2.1 50BLayout of a Warning Notice

WARNING

TEXT

The type and source of danger are described here.

Measures for avoiding the danger are shown here.

Example

DANGER

Death or severe injury due to high discharge current when opening the

device.

It is essential to ensure an earthing connection has been established

prior to connection to the supply current circuit.

1.2.2 Categories of Warning Notices

There are three categories of warning notices.

DANGER

"DANGER" designates a safety notice, disregarding which will lead directly to

death or severe injury!

WARNING

"WARNING" designates a safety notice, disregarding which can lead to death

or severe injury!


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CAUTION

"CAUTION" designates a safety notice, disregarding which can lead to

property damage or minor injury!

1.3 13BInformation

Info: Information which is important for the optimum and cost-effective operation of the equipment.


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2 1BSafety Information

2.1 14BIntroduction

The following instructions must be followed before operating the system for the first time in order to

prevent injury or damage to property. Safety instructions must be complied with at all times.

Before operating the device for the first time, carefully read all the documentation provided.

If the device is sold, rented or otherwise passed on, these safety instructions must also be given to

the next user.

2.2 15BProper Usage

The REFUsol photovoltaic inverter transforms the direct current generated by photovoltaic (PV)

modules into alternating current and feeds this into the grid. The device may only feed into the

medium-voltage network via a galvanically isolating Transformatior. Any use beyond this is not

deemed to be proper. The manufacture will accept no liability for any damage resulting in this

respect and the user alone will bear all responsibility. The REFUsol photovoltaic inverter has been constructed according to the current state of

technology and in line with the rules of technical safety. For simplification purposes, the REFUsol photovoltaic inverter is also referred to as the “inverter” in

these instructions.

2.3 17BTarget Group

These operating instructions are intended for:

Qualified electricians

2.4 6BPersonnel Requirements

For the purposes of this document, qualified electricians are individuals who have the specialist training, experience, and knowledge of the relevant regulations to be able to assess the work assigned to them and identify potential dangers.

2.5 Disclaimer

The REFUsol GmbH General Terms & Conditions for the Supply of Goods and Services apply.

In the event of loss or damage resulting from failure to comply with the warnings in these

operating instructions or improper use REFUsol GmbH accepts no liability.

Before operating the system for the first time, carefully read through the operating,

maintenance, and safety instructions.

Qualified electricians are responsible for ensuring compliance with currently applicable

standards and legal requirements, such as: standard 60364-7-712:2005: Requirements for

special installations or locations – Solar photovoltaic power supply systems.

Problem-free and safe operation of the device requires proper and specialized transportation,

storage, assembly, and installation as well as careful operation and maintenance.

Only use accessories and spare parts approved by the manufacturer.

Adherence must be ensured to the safety rules and regulations that apply in the country where

the system will be used.

The ambient conditions stated in the product documentation must be observed.

For European countries, EU Directive 2004/108/EC (EMC Directive) must be observed when


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using the inverter.

The technical data, rating, connection, and installation conditions must be noted from the

product documentation and observed under all circumstances.

We accept no liability in the event of loss or damage associated with a force majeure event or

disaster.

2.6 18BPreventing Electric Shock

DANGER

Danger to life from electric shock. Persistently high electric voltage in terminals and lines, even after device has been isolated and switched off.

It is essential to ensure an earthing connection has been established prior to connection to the supply current circuit.

Carefully check for correct connections.

Minimum requirements for measuring instruments comply with: Voltage: AC = 1000 V / DC = 1500 V Measurement Category: 1000 V CAT IV Degree of protection: IP55 (suitable for outdoor use)

2.7 Protection against Electrostatic Discharge (ESD)

CAUTION

Electrostatic discharge can damage or destroy electronic assemblies.

The appropriate ESD protection regulations must be noted and adhered to

when working on the device.

2.8 19BProtection against Magnetic and Electromagnetic Fields during Operation and Assembly

Magnetic and electromagnetic fields in the immediate vicinity of live lines can pose a serious risk to

persons fitted with pace-makers, metallic implants, and hearing aids.

WARNING

Danger to health for persons with pace-makers, metallic implants, and

hearing aids in direct proximity to electrical equipment

Persons with pace-makers and metallic implants must not enter areas in

which electrical devices and parts are being assembled, operated, or are

being brought into service.

Should people wearing pace-makers need to enter such areas, the

decision as to whether this is permitted is to be made by a doctor

beforehand. Immunity from interference of pace-makers which have

already been implanted or will be in the future varies greatly, meaning

that there is no rule of thumb in this respect.

Persons with metal implants or metal splinters as well as those with

hearing aids must ask a doctor before entering such areas, as

impairments to health are to be expected.


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2.9 20BPreventing Burns Caused by Contact with Hot Parts

WARNING

Machine housing surfaces may be hot. Danger of burns.

At an ambient temperature of 45°C, the upper part of the housing as well as

the cooling unit can reach a surface temperature of 75°C.

Do not touch the housing surface near to heat sources. Danger of burns.

Allow the device to cool down for 15 minutes before touching the surface

of the device.

2.10 21BProtection during Handling and Assembly

WARNING

Risk of injury caused by improper handling. Risk of injury caused by

crushing, shearing, cutting, striking, and lifting.

The photovoltaic inverter weighs approximately 850 kg.

Follow the general instructions for assembly and safety during handling

and set-up.

Use suitable assembly and transportation equipment.

Avoid trap and crush injuries by taking suitable precautions.

Only use suitable tools. Use special tools where this is prescribed.

Use lifting equipment and tools in a technically correct manner.

If necessary, use suitable protective equipment (for example, goggles,

safety footwear, protective gloves).

Do not stand under hanging loads.

Remove any liquids escaping onto the floor immediately to avoid the

danger of slipping.


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2.11 Disposal

2.12 23BFeed-in and grid safety management

Feed-in and grid management is designated as the interactive control of the inverter by the grid operator.

According to provisions of Sec. 11 of the Renewable Energies Act (2012 version) in Germany, grid-connected PV systems must participate in feed-in and grid safety management.

This primarily involves the possibility for the grid operator to temporarily limit the PV system remotely, and even to reduce it to null in critical situations for a short period.

In such cases, the REFUpmu (power management unit) and the photovoltaic inverter are to be connected with one another by way of interface RS485. The connection to the portal or modem/router takes place via an Ethernet connection. .

Dispose of the packaging and replaced parts according

to the rules applicable in the country where the device is

installed.

Do not dispose of the REFUsol photovoltaic inverter with normal domestic waste.

The photovoltaic inverter complies with the RoHS Directive.

That means that the device can be taken to municipal disposal

sites for household appliances.

REFUsol GmbH will take back the photovoltaic inverter

completely. Please contact the Service team!


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3 2BDescription of the REFUsol 333K

3.1 24BHow It Works

The REFUsol-333K transforms the direct current generated by photovoltaic (PV) modules into

alternating current and feeds this into the grid.

Figure 1: How it works: a grid-connected PV system with photovoltaic inverter

1 PV modules

2 Generator terminal box

3 REFUsol photovoltaic inverter

4 Fuse switch disconnector or circuit breaker

5 Transformer

6 Power meter

7 Connection to grid

8 Medium voltage AC grid


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3.2 25BBasic Design

The REFUsol-333K is a three-phase photovoltaic inverter without a transformer, which has a

particularly high efficiency at any operating point and is suitable for the connection of a PV

generator with a power of up to 375 kW. Heat is dissipated as required by an automatically

activated fan. An internal monitor protects the device if the permissible ambient temperature is

exceeded.

For communication purposes, the inverter offers the interfaces RS485, relay 230 V / 2 A AC (error

notification) and Ethernet. An illuminated graphical display shows the development of the feed-in

power and other important operating data in a clearly arranged manner. There is also an 8-button

control panel below the display. Due to its design in protection class IP55, the inverter can be

installed in almost any outside location.

Figure 2: External view

REFUsol 333K

Key

Description

A Control cabinet door

B Graphical display and control panel

C Fan grill for air in

D Nameplate

E Fan grill for air out

F External connections for AC/DC

C

B

A

E

D


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3.3 26BGraphical display and control panel

Graphical display and control panel

The graphical display integrated into the solar inverter, together with the 8-button control panel,

allows various data to be displayed such as the development of feed-in power, and makes using

and navigating the different functions easy and convenient.

Status LED messages:

READY Ready to be switched on [illuminates]

ON During activation [flashes], feed-in operation [illuminates]

ALARM Error notification, see Section 5, Troubleshooting, page 28

EARTH FLT Error message: isolation measurement

Figure 3: Graphical Display and Control Panel

Navigation

The necessary parameters are selected and entered using the 8-button control panel. The control

panel illuminates for approximately 5 minutes after a button is pressed.

F1: Display the menu

◄►: Function in the menu: navigation through the menu level (previous menu, next

menu)

Function while parameters are being edited: digit to the left, digit to the right

(decade jump)

▲▼: select the menu level (level up, level down)

Function while parameters are being edited: increases, decreases the value by 1

ESC: acknowledge faults and exit from menu level, exit from input level without entering

data

: confirm the selected menu and entered data

Status LEDs


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3.4 32BStandard Display

Figure 4: Operating mode display

PAC = Current feed power in watts (W)

UAC = Line voltage in volts (V)

UDC = Solar cell voltage in volts (V)

y day = yield of the day in kWh

Press the ◄ key once to display the development of the day's feed-in power.

Figure 5: “Today's” feed power display

Press the ▼ key once to display the development of the feed-in power for previous days.

Figure 6: “Yesterday's” feed power display

Press the ESC key to return to the basic screen display.


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3.5 Yield Data Display

Press the ► arrow key to display the current yield data and the operating hours having currently

elapsed.

Figure 7: Yield data absolute display

3.6 Standardized Yield Data Display

Press the ► arrow key, then the ▼ arrow key to display the development of standardized yield

data.

Figure 8: Standardized yield data display

Press the ESC key to return to the basic screen display.

Input of standardized data:

To obtain the standardized yield data, press the F2 key and enter the connected PV generator

power under parameter P1155 as follows:

◄► keys: Pressing the ◄ key => selects the digit to the left of the decimal point

Pressing the ► key => selects the digit to the right of the decimal point

▲ key: Whenever you press this key, the number at the digit selected is incremented

by 1.

▼ key: Whenever you press this key, the number at the digit selected is decremented

by 1.


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Figure 9: Standardized data input display

Press the ESC key to display the previous “normalized yield” level.

Press the F1 key to display the menu.

Press the key to apply the value set.


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3.7 33BOverview of Menus

Menu Level 1 Menu Level 2 Menu Level 3 Menu Level 4 Display or entry

Analysis Absolute yield

Standardized

yield

Actual values DC

AC

Sensors

ON or OFF *1

Fault memory Display of fault log e.g. grid

undervoltage. Use the ◄► keys to

navigate between displaying the data

and the error number.

Configuration Country of use “List of countries”

Languages “List of

languages”

PAC restriction PAC restriction

Heat sink 40.4°C

Interior 46.4°C

Irradiation 622.3W/qm

Panel 37.4°C

F1-Menu

AC power 6521.4 W

AC voltage 228.2 V

AC current 23.3 A

AC frequency 50.0 Hz

F1-Menu

DC power 6714.4 W

DC voltage 704.2 V

DC current 13.3 A

F1-Menu

Yield normalized

Day: 122.8 kWh

Month: 3 88.1 kWh

Year: 3338.9 kWh

Total: 3338.9 kWh

Norm P: 15.0 kWp

F1-Menu

Yield absolute

Day: 241.7 kWh

Month: 1322.0 kWh

Year: 5083.4 kWh

Total: 5083.4 kWh

Oper. hr: 422.3 h

F1-Menu


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Communication USB Protocol Protocol

(See: *2)

Ethernet Protocol Protocol

(See:*2)

IP address Entry of

IP address

Subnet mask Entry of

subnet mask

Standard gateway Entry of

standard gateway

Protocol port Protocol port

DNS adress Entry of

DNS adress

RS485 USS address Entry of

USS address

(See:*3)

Protocol Entry of

protocol

Baud rate Entry of

Baud rate

Date/Time Entry of

date/time

Portal monitoring Activating Activating:

0 = Off

1 = On

Sending Config 0 = no configuration data in queue

1 = configuration data being sent

Server IP Display of server IP address

Server port Display of the port number of the web

server

Portal test

function

If “Yes” entered, a data packet is sent

to the web server (portal). There is no

acknowledgment.

To check, contact the Service team.

Password Entry of password

Extended XModem Update Update performed if “Yes” entered

Numerical list Display of all internal parameters (only

for Service)

About the device Version ID Display of version ID

Country of use Display of country of use

Current language Display of “Current language”


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Device type Display of device type

Serial number Display of serial number

Detailed explanation

*1. “Switch on” or “Switch off” of the inverter

If the inverter is running, you see “OFF”

If the inverter is switched off, you see “ON”

*2. Communication via Ethernet

Protocol:

Entry 0 or 1

0 = RTP protocol

1 = USS and RTP protocol

Protocol port:

Input 1024….65535; default setting 21062

The port number is required for communication via Ethernet

*3. Communication via RS485

USS address:

Input 1 – 31

This address is required for communicating with the inverter via RS485.

Note:

If you change this value (address) and wish to save it, you must restart the inverter! The

new address will only be active thereafter.

Protocol polling via Ethernet:

Input 1, 2 and 3

1: USS and RTP protocol

2: Solar data systems (old SolarLog© firmware)

3: MeteoControl


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3.8 Password Entry

For configuration and parameterization the customer password is often required!

The password is entered as follows:

The customer password is: 72555

Please enter in the following order

7 (5.) 2 (4.) 5 (3.) 5 (2.) 5 (1.)

Configuration

Languages

Communication

Date/Time

Portal monitoring

Extended

Password

F1 menu

Password entry

F1 menu

0

ESC

F1

F1

ESC

I


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3.9 27BInternal Data Logger

The photovoltaic inverter is already equipped with an internal data logger. To be able to use

REFUlog a modem or router, a switchbox and the appropriate Ethernet connections to the inverter

must be provided.

The yield data can be displayed on the internal display or can be optionally visualized via the REFUlog monitoring system. To use the REFUlog the inverter must be connected to the Internet,

namely www.refulog.com

Detailed data is continuously saved to a file. Up to 40 measured values in the form of parameters

can be recorded at the same time. If the storage capacity is full, the oldest data is overwritten. With

the default setting on delivery, the data logger saves 16 measuring channels.

Recording cycle Storage time

1 minute 6 months

2 minutes 12 months

5 minutes 2.5 years

10 minutes 5 years

Figure 10: Device display screen

Figure 11: Display with REFUlog

http://www.refulog.com/


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4 3BDecommissioning and Recommissioning the Inverter

DANGER

Danger to life caused by persistently high electric voltage in terminals

and lines, even after the inverter has been isolated and switched off.

No emergency shutdown on solar inverter.

The solar inverter is galvanically isolated from the PV system via DC switch disconnectors in the connected GAKs*.

The solar inverter is galvanically isolated from the AC mains via a fuse

switch disconnector or circuit breaker on the transformer.

Work on the REFUsol 333K is only permitted after all phases have

been disconnected on the AC and DC side of the device.

If work is to be performed inside the REFUsol 333K, the DC link

capacitors must be manually discharged.

Manual discharging of DC link capacitors may be performed only by

suitably trained and authorized personnel, and using the discharge

unit PM932.

*GAK = Generator terminal box

Before using the inverter for the first time, the device must be set up for operation and all requirements met as described in the installation instructions for the REFUsol 333K.

4.1 Use of the discharge unit PM932

For manual discharging of the DC link capacitors use the discharge unit PM932.

1. Switch Measurement instrument of the

REFUsol discharging unit to OFF.

Figure 12: Switch off


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2. Fix REFUsol discharging unit at terminal area.

Figure 13: Fix discharge unit

3. Switch Measurement instrument of the REFUsol discharging unit to ON.

4. Wait until all four gauges go to zero.

DC link capacitors are discharged.

5. Switch back to OFF.

Figure 14: Discharge

4.2 Disconnection / connection of the supply voltage

4.2.1 Switching off the Supply Voltage

DANGER

Danger to life from electric shock

Before removing the protective covers, verify that the system is de-

energized.

DC side in the field

1. Choose “OFF” on the display.

The inverter stops, on the display you see “ON”.

2. Power off all GAKs.

3. Protect the GAKs from being reactivated.

4. Make it clear through signage and information that work is being carried out on the device.


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AC distribution

5. Switch off accompanying fuse switch disconnectors.

6. Remove fuses and store in a safe place.

7. Ensure the device cannot be reactivated.


On the REFUsol 333K AC side

9. Verify connection points are de-energized.

10. Remove protective covers.

11. Short-circuit and earth all 4 active lines by using a short-circuit and earthing device (see Fig.15, page 25).

12. Replace protective covers.


On the REFUsol 333K DC side

14. Manually discharge the DC link capacitors. with the help of a discharge unit.

15. Determine absence of voltage with the help of suitable measuring instruments at all connection points (see chapter 2.6, page 8).


17. Using a grip with a hand guard remove the fuses.



The REFUsol 333K has been switched off. No current is fed into the AC network.

4.2.2 Switching on the Supply Voltage

On the REFUsol 333K DC side


2. After manual discharging, remove the discharge unit PM932, if still connected.

3. Using a grip with a hand guard insert the fuses.


On the REFUsol 333K AC side


6. Remove short-circuit and earthing devices (see Fig.15, page 25).


DC side in the field

8. Switch on all associated GAKs.

If the country code has already been set, the REFUsol 333K starts to initialize if sunshine is

present and then starts to feed current into the AC network. To set the country code, see

Section 9.3, page 50 of the installation instructions.

AC distribution

9. Insert fuses.

10. Switch on accompanying fuse switch disconnectors.


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Figure 15: AC connector with screw on short-and earthing

4.3 Automatic Activation of Feed-In

As soon as the voltage systems have been switched on on the AC side and the DC side (see

Section 4.2.2), activation takes place automatically.

Provided that enough sunlight is reaching the solar modules and there are no faults, the procedure

below can be followed on the display:

Self-test:

All status LEDs are lit for approx. 6 seconds

The initialization cycle is started:

The “Ready” status LED flashes

Display:

PAC Feed power in watts (W)

UAC Line voltage in volts (V)

UDC Solar cell voltage in volts (V)

State Initialization


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Figure 16: Device initialization display

Initializing has been completed:

The “READY” status LED remains illuminated

Display:




Switched off

Figure 17: Device activation display

Power-up starts if the solar cell voltage is > 600 V:

The “READY” status LED is illuminated, the “ON” status LED flashes

Display:




Activating

This process can take up to one hour when the device is being started up for the first

time; during normal operation, it takes up to 3 minutes.

Feed mode:

The “ON” status LED remains illuminated; the “READY” status LED goes off.

Display:



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y day = yield of the day in kWh

Operation

4.4 Switching off Feed-In

2. Select on the front panel of the graphic display “OFF”.

The inverter switches off; it appears "ON" on the display.

3. Shut down all affiliated generator junction boxes.

4. Secure them against reactivation.


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5 5BTroubleshooting

5.1 39BSelf-Test Error Messages

After the initialization routine, the system runs through a self-test. The individual parts of the

system, such as firmware and dataset, are checked and data is read in from the power control

board. If an error is detected, possible remedial measures must be taken according to the type of

error.

5.2 40BTransient Failure

If certain errors occur the inverter goes temporarily offline.

Unlike malfunctions, “transient failures” are automatically acknowledged by the inverter which

attempts to restart.

A transient failure is indicated by the red LED alarm on the control panel flashing and is stored in

the fault memory. See the Faults section.

5.3 41BFaults

Permanently programmed and parameterizable limit values are continuously monitored during ongoing operation. In order to be protected, the inverter power section is isolated from voltage

supply if a limit value is exceeded or if a failure occurs. However, the DC and AC voltages may still

be available. The corresponding fault message appears in the display.

The fault is indicated on the control panel by the red “Alarm” LED remaining illuminated.

Fault messages are stored in the fault memory, where they will remain even in the event of a power

failure. The fault memory can be called up via the display. The last 100 faults are saved in the fault

memory. The latest fault is kept at memory location S0, the oldest at S100. A new fault is always

stored to memory location S0. Any fault already at memory location S100 will be lost.

5.4 42BAcknowledging Faults

After shutdown due to a fault, the device remains locked against reactivation until the fault is acknowledged. It is not possible to acknowledge the fault while the cause of the fault still exists. After the cause of the error has been corrected, the fault can be acknowledged manually.

To acknowledge a fault message press the ESC key or switch off the solar inverter at the

DC switch, then switch it back on after waiting for a short time.

The solar inverter will start operating again.

5.5 Return of the solar inverter

Observe instructions in the installation guide to packaging and transportation.


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5.6 43BList of Fault Messages

Error code Error message Description Action

0x000000 Error management

May be impermissible

acknowledgment. Cause of error

cannot be traced.

Restart

0x30002 Parameter error 1

A defective parameter file was found

when the special functions were

initialized.

Arrange for Service team to

perform an update. 0x30005 Parameter error 2

No parameter file was found when

the special functions were initialized.

0x30006 Parameter error 3

The number of parameters does not

correspond to the number of

parameters in the file system.

0x40001 Internal

communication

Timeout between control and

regulation unit card and power

section.

If problem occurs

repeatedly, contact Service

team. 0x40010 System error 1 Operating system crash.

0x50000 System error 2 Initialization has failed.

Restart inverter. If the error

cannot be fixed, contact

Service team.

0x60001 Incorrect time

Inverter is supplying power with the

wrong time because the real-time

clock was not initialized.

Set correct time.

0x70000 Update registration No further update could be

registered.

Wait until the current update

is complete.

0x70001 Update in progress An update is already in progress. Wait until the update is

complete.

0x80001 Incorrect time

Initialization of real-time clock has

failed. This prevents data logger

from functioning.

Set correct time.

0x90001 System restart The inverter has been restarted. This text is displayed for

information purposes only.

0x90002 Program CRC error Checksums do not correspond. Arrange for Service team to

perform an update.

0x90004 RAM error 1 RAM error detected in a safety-

critical variable. Contact Service team.

0x90005 MMU exception Program memory protection fault.

0x0A0000 FPGA firmware Incorrect FPGA version. Arrange for Service team to

perform an update.

0x0A0001

Regulator voltage 1 Regulation error in positive boost

converter. Wait for the regulator to

become stable again. If this

takes longer than 2-3 hours,

contact Service team. 0x0A0002 Regulator voltage 2

Regulation error in negative boost

converter.


30


0x0A0003 Regulator voltage 3 Asymmetry low: Difference between

the two solar voltages is too high.

If problem occurs once only:

wait for the regulator to

become stable again.

If problem occurs

repeatedly: contact Service

team.

0x0A0004 Regulator voltage 4

Asymmetry high: Difference between

the two boosted DC link voltages is

too high.


The positively boosted DC link has

dropped below the mains peak

value.


The negatively boosted DC link has

dropped below the mains peak

value.

0x0A0007 Regulator voltage 7 The positive solar voltage has

dropped below the limit value.

0x0A0008 Regulator voltage 8 The positive solar voltage is too

high.

0x0A0009 Regulator voltage 9 The negative solar voltage has

dropped below the limit value.

0x0A000A Regulator voltage 10 The negative solar voltage is too

high.

0x0A000B Regulator voltage 11 The positively boosted DC link

voltage is too high.

0x0A000C Regulator voltage 12 The negatively boosted DC link

voltage is too high.

0x0A000D Grid overvoltage A grid overvoltage has been

detected.

As long as the inverter is

detecting a grid

overvoltage: check line

voltages (with a true RMS

measurement device). If

you consider the line

voltages to be in order,

contact Service team.

0x0A000E Grid undervoltage Grid undervoltage detected

voltage dip


detecting a grid

undervoltage: check line

voltages (with a true RMS

measurement device). If

you consider the line

voltages to be in order,


0x0A000F Grid overvlt. l2l Grid line-to-line overvoltage

detected.


detecting a grid line-to-line

overvoltage: check the line-

to-line voltages (with a true

RMS measurement device).

If you consider the line-to-

line voltages to be in order,



31


0x0A0010 Grid undervlt. l2l Grid line-to-line undervoltage

detected.


detecting a grid line-to-line

undervoltage: check the

line-to-line voltages (with a

true RMS measurement

device). If you consider the

line-to-line voltages to be in

order, contact Service team.

0x0A0012 Overfrequency Grid overfrequency detected.


detecting an overfrequency:

check the frequency of the

phases. If you consider the

frequencies to be in order,


0x0A0013 PM isolation RCD CR Control and regulation unit has

detected residual current.

Check system isolation. If

you consider the system

isolation to be in order,


0x0A0014 No country code No country code has been set, or

code invalid. Contact Service team.

0x0A0016 Underfrequency Grid underfrequency detected.


detecting underfrequency:

check the frequency of the

phases. If you consider the

frequencies to be in order,


0x0A0017 Country not permitted Invalid country code Contact Service team.

0x0A0018 Voltage error max

The nominal grid voltage was above

the limit value for average voltage

monitoring for too long.


detecting the voltage error

max: monitor line voltages

(analyze grid). If you

consider the line voltages to

be in order, contact Service

team.

0x0A0019 Voltage error min

The nominal grid voltage was below

the limit value for average voltage

monitoring for too long.


detecting the voltage error

min: monitor line voltages

(analyze grid). If you

consider the line voltages to


team.

0x0A0106 Supply voltage PS Supply voltage at the power section

is too low. Contact Service team.

0x0A010C PM isolation PS Isolation error detected in the power

section during activation.

Check system isolation. If

you consider the isolation

resistance to be in order,



32


0x0A010E Device fault PS Power section hardware shutdown.

Make a note of: When the

error occurred (precisely:

day, kW output, time)

0x0A0110 Solar voltage PS 1 Power section overvoltage shutdown

in positive DC link

Do nothing. The inverter will

acknowledge the error

automatically. If problem

occurs repeatedly, contact

Service team. 0x0A0111 Solar voltage PS 2

Power section overvoltage shutdown

in negative DC link

0x0A0118 Voltage offset PS

Offset adjustment values between

power section and control and

regulation unit divergent.

Contact Service team.

0x0A0119 Current transdcr.PS Current transducer could not detect

any current flow. Do nothing. The inverter will




Service team.

0x0A011A Activation PS 1 DC discharge is taking too long.

0x0A011B Activation PS 2 DC link voltage drop during

activation.

0x0A011D Activation PS 4 Balancing has failed. Contact Service team.

0x0A011E Activation PS 5 Uploading of DC links has failed.

0x0A011F Parameter error PS 5 Faulty reading or writing process in

power section memory

1.) Switch off device with

DC disconnector.

2.) Wait until the display has

turned off completely.

3.) Switch on device with

DC disconnector.

If this does not rectify the

error, contact Service team.

0A0120 Communication PS

Communication malfunction between

power section and control and

regulation unit.





Service team.

0x0A0150 Overtemperature 2 Temperature exceeds the configured

limit value.

Check the inverter for heat

build-up or obstruction of

cooling fins. Remove as

necessary. If the error

persists, contact Service

team.

0x0A0151 Overtemperature AC1 Temperature exceeds the configured

limit value.

0x0A0152 Overtemperature AC2 Temperature exceeds the configured

limit value.

0x0A0153 Internal

overtemperature

Temperature exceeds the configured

limit value.

0x0A0154 Overtemperature DC1

Temperature of the cooler on

positive boost converter exceeds the

limit value.

0x0A0155 Overtemperature DC2

Temperature of the cooler on

negative boost converter exceeds

the limit value.


33


0x0A0156 Overtemperature U Temperature exceeds the configured

limit value.

0x0A0157 Overtemperature V Temperature exceeds the configured

limit value.

0x0A0158 Overtemperature W Temperature exceeds the configured

limit value.

0x0A0159 Fault fan 1 Fault message for fan 1.

0x0A015A Fault fan 2 Fault message for fan 2.

0x0A015B Fault fan 3 Fault message for fan 3.

0x0A015C Fault fan 4 Fault message for fan 4.

0x0A015D Fault fan 5 Fault message for fan 5.

0x0A015E NTC wire break Wire break detected in cooler

sensor. Contact Service team.

0x0A015F NTC short circuit Short circuit detected in cooler

sensor.

0x0A0160 Precharging error Error during precharging.

The DC +/- could be

inverted.

Please check DC wiring. If

you consider the wiring to

be in order, contact

Service team.

0x0A0161 Overcurrent BC Pos.

Hardware shutdown due to

overcurrent in positive boost

converter link





Service team.

0x0A0162 Overcurrent BC Neg.

Hardware shutdown due to

overcurrent in negative boost

converter link

0x0A0163 Overcurrent Phase U Hardware shutdown due to Phase U

overcurrent

0x0A0164 Overcurrent Phase V Hardware shutdown due to Phase V

overcurrent

0x0A0165 Overcurrent Phase W Hardware shutdown due to Phase W

overcurrent

0x0A0166 Overvoltage DC link

Pos.

Overvoltage detected in positively

boosted DC link

0x0A0167 Overvoltage DC link

Neg.

Overvoltage detected in negatively

boosted DC link

0x0A0168 String error Input current groups connected

incorrectly.

The DC +/- could be

inverted.

Please check DC wiring. If

you consider the wiring to


team.


34


0x0A0169 Riso wire break

During the function test with a

isolation measuring device, wire

break detected.


0x0A0177 Fault fan E1 – E5

The internal speed monitoring has

detected a deviation from the

setpoint speed.


0A200D Overtemperature 6 Device temperature too high.





Service team.

0x0B0001 System 1 Error in error management system.

Contact Service team. 0x0B0002 System 2 Error memory is full.

0x0B0003 System 3 Error acknowledgment failed.

0x0D0001 System error

A connection to the power section

could not be established during the

firmware update.

1.) Switch off device with

DC disconnector.

2.) Wait until the display has

turned off completely.

3.) Switch on device with

DC disconnector.

If this does not rectify the

error, contact Service team.

0x0D0002 PS bootloader Power section bootloader faulty

One of the power section’s

two bootloaders is faulty.

This text is displayed for

information purposes only.

The inverter will continue to

function.

Contact Service team and

arrange firmware update.

0x0D0003 System restart System has been restarted to enable

a firmware update to be performed.

For information purposes

only. If the error occurs but

you have not performed an

update, contact Service

team.

0x100001 Ethernet connection 1 A connection to the Ethernet could

not be established.

Inspect Ethernet

connection:

check IP address, subnet

mask, server address, and

server port.

0x100002 Ethernet connection 2 Loss of Ethernet connection. Check Ethernet connection.

0x100003 Ethernet connection 3 No 100Mbit/s Ethernet connection is

available.

Ethernet connection with

100Mbit/s required. Check

that your network is

transmitting at 100Mbit/s.


35

6 6BMaintenance and Cleaning

6.1 44BMaintenance Instructions

To ensure reliable operation of the solar inverter and to safeguard your entitlement to make claims

under the warranty, routine maintenance is required.

Maintenance work must be performed only by trained and qualified personnel authorized by REFUsol.

By way of precaution, we recommend that a servicing and maintenance contract is concluded.


36

7 7BTechnical Data

7.1 45BTechnical Specifications for REFUsol 333k Solar Inverter

REFUsol 333K

DC data

Max. PV power 375 kW

MPPT range 610...1,200 V

Max. DC voltage 1,500 V (Feeding up to 1400 V)

Max. DC current 610 A

MPP tracking Fast, precise MPP tracking

Number of DC inputs 4

Number of MPP trackers 1

Overvoltage protection Class I in accordance with IEC 61643-1

AC data

Rated AC power 333 kVA

Max. AC power 333 kW

AC grid connection 3AC690V +PEN, 50-60Hz, external grid transformer required

Cos phi 0.9i … 1 … 0.9c

Max. AC current 280 A

AC pre-fuse required NH 3 355 A AC / 690 V AC / gG

THDI ≤3% (before grid transformer)

Max. efficiency 98.4%

European efficiency 98.0%

Infeed from 0.6 kW

Internal consumption in night operation

0 W

Overvoltage protection Class I in accordance with IEC 61643-1

Cooling, ambient conditions, standards

Cooling Temperature regulated forced-air ventilation

Ambient temperature -20...+ 55°C from 45° with power derating

Installation altitude up to 1,000 m above sea level without restriction above 1000 m above sea level with power derating above 2000 m above sea level with voltage derating

Noise level approx. 70 dBA

Emitted interference CISPR11

Interference immunity EN 61000-6-2: 2005

Environmental classification 4K4H under EN 60721-3-4

Certificate CE

Grid code Complies with all of the German low and medium voltage grid regulations (VDEW, BDEW, VDE-AR-N 4105, EEG2009)


37

General data

Type of protection IP55 under EN 60529

Protection class I under EN 62109 / IEC 62103

Dimensions

Width / Height / Depth

1230 mm / 1610 mm / 810 mm

Without base

Weight Approx. 850 kg

Disconnection system DC DC contactors

Disconnection system AC Main AC contactor


38

7.2 Dimensions of REFUsol 333k Solar Inverter

Figure 18: Dimensions of REFUsol 333K solar inverter


39

7.3 8BDecommissioning/Deinstallation

DANGER

Danger to life from electric shock. Persistently high electric voltage in terminals and lines, even after device has been isolated and switched off.

The solar inverter must be decommissioned only by trained specialists.

General assembly and safety stipulations relating to working on high

current facilities must be followed.

The operator must comply with all the points set out above at all times.

CAUTION

Danger of burns caused by hot surfaces on housings

Do not touch the housing surface near to heat sources. Danger of burns.

Allow the device to cool down for 30 minutes before touching the surface

of the device.

7.4 48BDecommissioning and Deinstalling the Solar Inverter

Isolate the solar inverter!

1. Select on the front panel of the graphic display “OFF”.

The inverter switches off; it appears "ON" on the display.

2. Shut down all affiliated GAKs.

3. Secure them against reactivation

4. Ensure the device cannot be reactivated.

5. Disconnect the solar inverter from the mains.

6. Ensure that the solar inverter is disconnected from all voltage sources.

7. Apply locks on the mains connection circuit breaker and on the AC and DC disconnector.

8. Disconnect all terminals and cable glands.

9. Remove all DC and AC cables.

10. Disconnect connections and conductor bars on the base.

7.5 49BDisposing of the Inverter

Dispose of the inverter at the end of its service life in keeping with the applicable regulations on electronic waste disposal. Alternatively, you can ask REFUsol GmbH to arrange disposal.


40

8 9BContact

Please address any questions on failures or technical problems to:

Service hotline: +49 7123 969 202 (workdays from 8 a.m. to 5 p.m. CET)

Fax: +49 7123 969 30202

E-mail: [email protected] H

You should have the following data at hand:

Exact description of the error and if possible HEX code of the error (P0017.00).

Data from the nameplate:

Figure 19: Nameplate (Example)

mailto:[email protected]


41

9 10BCertificates

The following certificates

EC Declaration of Conformity

Unit Certificate under Medium Voltage Guidelines (BDEW)

can be downloaded from the REFUsol GmbH website www.refusol.com.



42

10 11BNote


43

All information subject to change. We reserve the right to make technical modifications. Errors excepted.

REFUsol GmbH

Uracherstraße 91

D-72555 Metzingen / Germany

Tel.: +49 7123 969-202

Fax: +49 7123 969-30202

[email protected]

www.refusol.com

Part No.: 0033201

REFUsol Solar Inverters - Advanced Energy · 2.2 15BProper Usage The REFU sol photovoltaic inverter...

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