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REFU 801 Series Operating Instructions Manual

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Operating Instructions

REFUone 1.6K-1T ... 3.3K-1T
Version 1 (No. 982075)
801 Series (1T)
October 2019

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  • Page 1: Operating Instructions

    Operating Instructions REFUone 1.6K-1T ... 3.3K-1T Version 1 (No. 982075) 801 Series (1T) October 2019...

  • Page 2: Copyright Declaration

    (including software, etc.), and no reproduction or distribution of it in any form or by any means. All rights reserved. REFU reserves the right of final interpretation. This manual is subject to change according to user’s or customer’s feedback. Please check our website at for latest http://www.refu.com...
  • Page 3 REFUone 1.6K-1T … 3.3K-1T Preface Outline Please read the product manual carefully before installation, operation or maintenance. This manual contains important safety instructions and installation instructions that must be followed during installation and maintenance of the equipment. Scope This product manual describes the installation, electrical connections, commissioning, maintenance and troubleshooting of REFUone 1.6K-1T …...

  • Page 4: Table Of Contents

    REFUone 1.6K-1T … 3.3K-1T Table of Contents Basic safety information ................... 5 Safety instructions ..........................5 Symbols and signs ..........................8 Product characteristics ..................9 Product dimensions ......................... 9 Function description ........................12 Efficiency curve ..........................13 Installation ..................... 14 Installation Process ........................

  • Page 5: Basic Safety Information

    For safety reason only a qualified electrician, who has received training and / or has demonstrated skills and knowledge in construction and in operation of this unit, can install this inverter. REFU Elektronik GmbH does not take any responsibility for the property destruction and personal injury because of any incorrect use.
  • Page 6 You can ask solar equipment installation contractor or REFU Elektronik GmbH for help if necessary. Transport of the equipment, especially by road, must be carried out by suitable ways and means for protecting the components (in particular, the electronic components) from violent shocks, humidity, vibration, etc.
  • Page 7 Inverter should work again after removing any faults. If you need any repair work, please contact with the local authorized service center; • Can’t open the internal components of inverter without authorized. REFU Elektronik GmbH does not take any responsibility for the losses from that. ATTENTION 1.1.7...

  • Page 8: Symbols And Signs

    REFUone 1.6K-1T … 3.3K-1T Symbols and signs 1.2.1 Safety symbols Caution of burn injuries due to hot enclosure! • You can only touch the screen and pressing key of the inverter while it’s working. CAUTION PV array should be grounded in accordance to the requirements of the local electrical grid operator! We suggest that all PV module frames and inverter are reliably grounded to protect the PV system and personnel security.

  • Page 9: Product Characteristics

    REFUone 1.6K-1T … 3.3K-1T Product characteristics Outlines of this chapter Product dimensions It introduces the field of use, and the overall dimensions of the REFUone inverters. Function description It introduces how REFUone inverters work and the functionality of the device. Efficiency curves It introduces the efficiency curves of in the inverter.
  • Page 10 REFUone 1.6K-1T … 3.3K-1T Front view and left view dimensions of REFUone 1.6K-1T 261 mm 118 mm FAULT Front view and left view dimensions of REFUone 3.3K-1T 261 mm 131 mm FAULT...
  • Page 11 Modelo: REFUone 3.3K-1T Tipo: 801P003.100 The labels must NOT be hidden with objects and extraneous parts (rags, boxes, equipment, REFU Elektronik GmbH, Marktstrasse 185 www.refu.com 72793 Pfullingen, Alemanha etc.); they must be cleaned fabricados na República Popular da China regularly and kept visible at all...

  • Page 12: Function Description

    REFUone 1.6K-1T … 3.3K-1T Function description DC power generated by PV array is filtered through Input Board before entering into Power Board. Input Board also offer functions such as insulation impedance detection and input DC voltage / current detection. DC power is converted to AC power by Power Board. AC power is filtered through Output Board then AC power is fed into the grid.

  • Page 13: Efficiency Curve

    REFUone 1.6K-1T … 3.3K-1T Electrical block diagram Electrical block diagram 1A + 1A - MPPT Master DSP Slave DSP WiFi RS485 Remote GPRS/Ethernet In/Out Control (opt.) Efficiency curve Efficiency Curve REFUone 3.3K-1T...

  • Page 14: Installation

    REFUone 1.6K-1T … 3.3K-1T Installation Outlines of this chapter This topic describes how to install the REFUone inverters. Installation notes • Do NOT install the REFUone inverter on flammable material. • Do NOT install the REFUone inverter in an area used to store flammable or explosive materials.
  • Page 15 REFUone 1.6K-1T … 3.3K-1T Table 1 shows the components and mechanical parts that should be delivered Pictures Description Quantity REFUone inverter 1 pcs Rear panel 1 pcs PV+ input terminal 1 pcs PV-input terminal 1 pcs Metal terminals secured to PV+ input power 1 pcs cables Metal terminals secured to PV- input power...

  • Page 16: Tools

    REFUone 1.6K-1T … 3.3K-1T Tools Prepare tools required for installation and electrical connections. Table 2 shows the tools required for installation and electrical connections. Tool Model Function Hammer drill Used to drill holes on the wall Recommend drill dia. Screwdriver wiring Removal tool Remove PV terminal...

  • Page 17: Determining The Installation Position

    REFUone 1.6K-1T … 3.3K-1T Safety goggles Operators wear Anti-dust respirator Operators wear Determining the Installation Position Determine an appropriate position for installing the REFUone inverter. Comply with the following requirements when determining the installation position: Installation Requirements...
  • Page 18 REFUone 1.6K-1T … 3.3K-1T clearance for single REFUone inverter Installation of multiple REFUone inverters 10 cm 20 cm...

  • Page 19: Moving The Refuone Inverter

    REFUone 1.6K-1T … 3.3K-1T Moving the REFUone inverter This topic describes how to move the REFUone horizontally to the installation position Step 1: Open the packaging, insert hands into the slots on both sides of the inverter and hold the handles, as shown in Figure 11 and Figure 12. Moving the REFUone inverter (1) Moving the REFUone inverter (2) Step 2: Lift the REFUone from the packing case and move it to the installation position.

  • Page 20: Installing Refuone Inverter

    REFUone 1.6K-1T … 3.3K-1T Installing REFUone inverter Step 1: Determine the positions for drilling holes, ensure the hole positions are level, then mark the hole positions using a marker pen, use the hammer drill to drill holes on the wall. Keep the hammer drill perpendicular to the wall, do not shake when drilling, so as not to damage the wall.

  • Page 21: Electrical Connections

    REFUone 1.6K-1T … 3.3K-1T Electrical Connections Outlines of this chapter This topic describes the REFUone inverter electrical connections. Read this part carefully before connecting cables. NOTE: Before performing electrical connections, ensure that the DC switch is OFF. Since the stored electrical charge remains in a capacitor after the DC switch is turned OFF.

  • Page 22: Electrical Connection

    REFUone 1.6K-1T … 3.3K-1T Electrical connection Shows the flowchart for connecting cables to the inverter Connect DC Input power Connect PGND Cables Start Cables Connect Communication Connect AC Output power Cables Cables (not mandatory) Connecting PGND Cables Connect the inverter to the grounding electrode using protection ground (PGND) cables for grounding purposes.

  • Page 23: Connecting Dc Input Power Cables

    REFUone 1.6K-1T … 3.3K-1T Step 3 Install the crimped OT terminal, flat washer using M5 screw, and tighten the screw to a torque of 3 Nm using an Allen wrench. Ground terminal composition 1. M5 screw 2. OT Terminal 3. Tapped Hole Connecting DC Input Power Cables Table 3 Recommended DC input cable specifications...
  • Page 24 REFUone 1.6K-1T … 3.3K-1T Connecting DC input power cables 1. Positive power cable 2. Negative power cable Note L2 is 2 to 3 mm longer than L1. Step 3 Insert the positive and negative power cables into corresponding cable glands. Step 4 Insert the stripped positive and negative power cables into the positive and negative metal terminals respectively and crimp them using a clamping tool.

  • Page 25: Connecting Ac Output Power Cables

    REFUone 1.6K-1T … 3.3K-1T Follow-up Procedure To remove the positive and negative connectors from the inverter, insert a removal wrench into the bayonet and press the wrench with an appropriate strength, as shown in Figure 22 Before removing the positive and negative connectors, ensure that the DC SWITCH is OFF.
  • Page 26 REFUone 1.6K-1T … 3.3K-1T Multi core copper wire AC cable should be correctly sized to ensure the power loss in AC cable is less than 1% of the rated power. If the resistance of the AC cable is too high, it will cause a huge Multi core copper wire increase in the AC voltage, which may lead to a disconnection of the inverter from the electrical grid.
  • Page 27 REFUone 1.6K-1T … 3.3K-1T AC wire connections procedure: Step 1 Select appropriate cables according to Table 4, Remove the insulation layer of the AC output cable using a wire stripper according to the figure shown below: Cable length A: 30 … 50 mm B: 6 … 8 mm Step 2 Disassemble the AC connector according to the figure shown below: insert the AC output cable (with its insulation layer stripped according to step 1) through the waterproof locking cable gland;...

  • Page 28: Connecting Rs485, Ct, Drms Cables

    REFUone 1.6K-1T … 3.3K-1T AC connector inside L – brown, N – blue, PE – yellow/green Step 4 Secure the locking cable gland clockwise, shown as below: make sure that all the wires are securely connected; Step 5 Connect the AC output connector to the output wiring terminal of inverter, rotate the AC connector clockwise until the fastener reaches its designated position, as shown below: AC connector Step 4...
  • Page 29 REFUone 1.6K-1T … 3.3K-1T The wiring methods are the same for RS485 and CT, this part describes their wiring methods and DRMS wiring methods. Table 5 Recommended communication cable sizes are shown below Communication function RS485 (Current Transformer) Cable size 0.5 …...
  • Page 30 REFUone 1.6K-1T … 3.3K-1T • according to Table 6, connect the wires as per the labels, and secure the wire using a slotted screwdriver.as shown in the figure below: Table 6 Function description of the communication terminals Type RS485 Current Transformer DRM’s Connector Front...
  • Page 31 REFUone 1.6K-1T … 3.3K-1T Note: 1. DRMs connection is only available for Australia and New Zealand; 2. Supported DRM command: DRM0, DRM5, DRM6, DRM7, DRM8 Step 4: Insert the terminal as per the printed label, and then tighten the screws to fix the waterproof cover, rotate the cable gland clockwise to fasten it securely.

  • Page 32: Wifi/Gprs Module Installation Procedure

    REFUone 1.6K-1T … 3.3K-1T WiFi/GPRS module installation procedure Step 1: remove WiFi / GPRS waterproof cover using screw driver Step2: Install WiFi / GPRS module. Step3: Fasten WiFi / GPRS module using screws. WiFi Communication REFUone grid-connected inverters offer WiFi communication modes as standard. Refer to the figure shown below:...
  • Page 33 REFUone 1.6K-1T … 3.3K-1T The operation information (generated energy, alert, operation status) of the inverter can be transferred to the REFUlog monitoring portal via WiFi. 4.7.1 Configuration of WiFi Stick with PC Preparation: The WiFi Stick is installed according to section 0 and the REFUone Inverter must be running.

  • Page 34: Monitoring Portal Refulog

    To view the inverter data, open with your browser and login with your www.refu-log.com existing username and password or register as a new user. You can use the activation code provided on the inverter to assign one or more inverter to a PV system in your account.

  • Page 35: Rs485 Communication

    REFUone 1.6K-1T … 3.3K-1T RS485 Communication 4.9.1 Communication between one inverter and one PC Refer to the figure shown below, connect the TX+ and TX- of the inverter to the TX+ and TX- of the RS485→ USB adapter, and connect the USB port of the adapter to the computer. (Note 1) 1: Radio ripple control receiver 2: RS 485 to USB Adapter 4.9.2...

  • Page 36: Commissioning Of Inverter

    Please consult qualified electrical engineer or personnel from electrical safety authorities about this. REFU Elektronik GmbH is not responsible for any consequences arising out of incorrect country code selection. If the inverter indicates any fault, please refer to of this manual trouble shooting for help.

  • Page 37: Operation Interface

    REFUone 1.6K-1T … 3.3K-1T Operation interface Outlines of this chapter This section introduces the display, operation, buttons and LED indicator lights of REFUone Inverter. Operation and Display Panel Buttons and Indicator lights ERROR Buttons Long press the button to enter the next menu or confirm the selection Short press the button to achieve the next page turning function Turn down the loop once to exit Indicator Lights...

  • Page 38: Standard Interface

    REFUone 1.6K-1T … 3.3K-1T Standard Interface When power-on, LCD interface displays INITIALIZING, refer below picture. Initializing… When control board successfully connected with communication board, the LCD display the current state of the inverter, display as shown in the figure below. Waiting States, Countdown 10 s.

  • Page 39: Main Interface

    REFUone 1.6K-1T … 3.3K-1T Fault Regular error state Unrecoverable error state Permanent Inverter states includes: wait, check, normal, fault and permanent Wait: Inverter is waiting to Check State at the end of reconnection time. In this state, grid voltage value is between the max and min limits and so on; If not, Inverter will go to Fault State or Permanent State.
  • Page 40 REFUone 1.6K-1T … 3.3K-1T (A) “Enter Setting” Interface as below: 1.Enter Setting 1. Set Time 12. Set Safety Voltage 2. Clear Energy 13. Set Safety Frequency 3. Clear Events 14. Insulation Resistance 4. Set Country 15. Set Reactive Power 5. On-Off Control 16.
  • Page 41 REFUone 1.6K-1T … 3.3K-1T Country“ interface. If it's shown “set Country code?“ on the screen, then long press the button to confirm to start country setting. “Success“ will be shown on the screen after a successful country setting. Table 8 Country code setting Code Country...
  • Page 42 REFUone 1.6K-1T … 3.3K-1T 0001), country setting can be set in 24h after keying in the correct passwords, over 24h, set through LCD again. Set Energy Users long press the button to enter “1.Enter setting” interface, long press the button to enter main setting interface.
  • Page 43 REFUone 1.6K-1T … 3.3K-1T 13. Set Safety Frequency User can change the Frequency protection point by the LCD. First the User need to copy the TXT file which is used to change the Frequency protection point to the USB Stick. Users long press the button to enter “1.Enter setting”...
  • Page 44 REFUone 1.6K-1T … 3.3K-1T 18. MPPT Scan Users long press the button to enter 1.Enter setting” interface, long press the button to enter main setting interface. Enter 18.MPPT Scan” by short press the button to turn the page and long press the button to confirm, then enter “Input Password” Setting interface. Long press the button to set passwords (default: 0001), short press the button to change different value, long press the button to next value setting.
  • Page 45 REFUone 1.6K-1T … 3.3K-1T 2. Event List 1. Current event 2. History event Fault information 01 ID04 06150825 ( Display the event sequence number, event ID number, and event occurrence time ) “SystemInfo” Interface as below: 3.SystemInfo 1. Inverter Type 7.
  • Page 46 REFUone 1.6K-1T … 3.3K-1T 5. Country Users short press the button to enter “3. SystemInfo” interface, then long press the button to enter into system information checking interface, then short press the button enter into “5. Country”, then long press the button, the Country will be displayed. 6.

  • Page 47: Update Software

    Step 2: Insert the USB flash drive into the computer. Step 3: REFU will send the Software code to the user who needs to update. After user receive the file, please decompressing file and cover the original file in USB flash drive.

  • Page 48: Trouble Shooting And Maintenance

    REFUone 1.6K-1T … 3.3K-1T Trouble shooting and maintenance Outlines of this chapter This topic describes how to perform daily maintenance and troubleshooting to ensure longterm proper operation of the inverter. Trouble shooting This section contains information and procedures for solving possible problems with the inverter.
  • Page 49 REFUone 1.6K-1T … 3.3K-1T Event Event List Name Event List description Solution List No. under-frequency protection points after ID04 GridUFP The power grid Obtaining approval from the local electrical grid frequency is too low operator. ID05 PVUVP The input voltage is too Check whether too few PV modules are series connected in a PV string, thus the voltage (Vmp) of the PV string is lower than the minimum operating...
  • Page 50 REFUone 1.6K-1T … 3.3K-1T Event Event List Name Event List description Solution List No. ID19 HwADFaultVGrid The grid voltage sampling error ID20 GFCIDeviceFault The GFCI sampling error ID21 MChip_Fault The master chip fault ID22 HwAuxPowerFault The auxiliary voltage error ID23 BusVoltZeroFault The bus voltage sampling error...
  • Page 51 REFUone 1.6K-1T … 3.3K-1T Event Event List Name Event List description Solution List No. ID50 Consistent The grid f requency Fault_FGrid sampling value between the master DSP and slave DSP is not consistent ID51 Consistent The DCI sampling value Fault_DCI between the master DSP and slave DSP is not consistent...
  • Page 52 REFUone 1.6K-1T … 3.3K-1T Event Event List Name Event List description Solution List No. ID68 Unrecover The input current is IpvUnbalance unbalance, and has cause unrecoverable ID69 Unrecover The bus voltage Is Vbus Unbalance unbalance, and has cause unrecoverable fault ID70 Unrecover The grid current is too...

  • Page 53: Maintenance

    REFUone 1.6K-1T … 3.3K-1T Event Event List Name Event List description Solution List No. the communication board is not consistent ID95 Communication The Communication ID95~ID96 are internal faults of inverter, turn OFF the board EEPROM fault board EEPROM is fault “DC switch”, wait for 5 minutes, then turn ON the “DC switch”.

  • Page 54: Technical Data

    REFUone 1.6K-1T … 3.3K-1T Technical data Outlines of this chapter This topic lists the technical specifications for all REFUone inverters. DC Data Technical Data REFUone 1.6K-1T REFUone 3.3K-1T Max. input power (W) 2,200 4,500 Number of independent MPPT Number of DC inputs Max.

  • Page 55: Efficiency, Protection And Communication

    REFUone 1.6K-1T … 3.3K-1T Efficiency, Protection and Communication Technical Data REFUone 1.6K-1T REFUone 3.3K-1T Max efficiency (%) 97.5 97.7 Weighted eff. (EU/CEC) (%) 96.9 97.2 Self-consumption at night (W) < 1 Feed-in start power (W) MPPT efficiency > 99.9 DC switch integrated Anti-islanding, DC reverse polarity, Overtemp., leakage Safety protection...

  • Page 56: Quality Assurance

    REFUone 1.6K-1T … 3.3K-1T Quality Assurance REFU Elektronik GmbH offers 5 years product warranty for REFUone inverters from date of installation. However, the warranty period can’t exceed 66 months from the date of delivery of the inverter. During the warranty period, REFU Elektronik GmbH guarantees normal operation of the inverter.

  • Page 57: Technical Support

    REFUone 1.6K-1T … 3.3K-1T Technical Support If you have followed the Troubleshooting and could not solve your issue, you can contact REFU’s service team as follows: Brazil: +55 (11) 4708-7355 Germany: +49 (7121) 4332-333 Webpage: www.refu.com/en/refuone Download of Data sheets, Manuals, Certificates, Firmware Update Files etc.
  • Page 58 REFUone 1.6K-1T … 3.3K-1T...
  • Page 59 REFUone 1.6K-1T … 3.3K-1T...
  • Page 60 REFU Elektronik GmbH Marktstraße 185 D-72793 Pfullingen Phone: +49 (0)7121-4332 0 Fax: +49 (0)7121-4332 140 Mail: info@refu.com Version 1 (No. 982075) 801 Series (1T) October 2019...

This manual is also suitable for:

1t seriesRefuone 1.6k-1t801p3k3.100Refuone 3.3k-1t801p1k6.100

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