Sunways NT 2600 User Manual
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Sunways NT 2600 User Manual

Solar inverter
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User Manual for Sunways
Solar Inverters NT 2600, NT 4000 and
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Summary of Contents for Sunways NT 2600

  • Page 1 MANUAL User Manual for Sunways Solar Inverters NT 2600, NT 4000 and NT 6000...
  • Page 2 300 mm 180 mm...
  • Page 3 List of Contents General information Safety information Sunways Solar Inverters NT 2600, NT 4000 and NT 6000 Information on installation Safety information Installation General safety information Opening the unit Scope of supply, inspecting the delivery Integration into the PV system...

  • Page 4: Table Of Contents

    Commissioning Information on operation Monitoring and diagnosis Sunways NT Monitor software Fault indications Fault diagnosis Warranty terms and conditions Switching the solar inverter on and off Configurations Structure and menu levels for configuration Display Data memory General information Initialising the remote modem Connection and circuitry options Configuring the interface cables Sunways NT Monitor data acquisition...
  • Page 5 Appendix Subject and abbreviation index Function and information index Designation and description Functional principle and explanations Block diagram Technical data TYCO SOLARLOK connectors Conformity and safety declarations General exclusion of liability, rights, registered trademarks...
  • Page 6 1.0 General information...

  • Page 7: Safety Information

    Safety information The User Manual contains safety hints. These are identified by a triangle with an exclamation mark. General safety information All safety hints contained in this section and throughout the User Manual must be complied with at all times to guarantee the user's safety.
  • Page 8 Opening the unit Before opening the cabinet, the unit must always be disconnected from the grid and from the PV generator. The unit continues to conduct a hazardous voltage internally and at the connection sockets for ca. five minutes after disconnec- ting from the PV generator.

  • Page 9: Sunways Solar Inverters

    Sunways Solar Inverters NT 2600, NT 4000 and NT 6000 Scope of supply · Sunways Solar Inverter in the NT series · Installation frame · Manual, setup, warranty card, CD-Rom with software · 2 pairs of TYCO SOLARLOK connectors Inspecting the delivery The condition of our products is checked prior to delivery.
  • Page 10 Integration of the solar inverter into the PV system Design of the PV generator The technical data of the selected PV generator must be within the specifica- tion of the solar inverter (see Technical Data). The Sunways NT Sundim design program for the PV generator may be helpful.
  • Page 11 Standard components of a PV system Depending on the recommendations of your electrician, your PV system will con- sist of the following components: Standard components of the PV system PV generator switch: Designed as DC load break cut-out to cut off the PV generator from the solar inverter.
  • Page 12 Protection concept The following parameters are monitored continuously and in parallel by the micro- controller and displayed on the screen: · AFI error (ground fault) · Overheating of the cooling element · DC overvoltage · AC undervoltage/overvoltage In the event of a fault, the conversion is immediately blocked and the grid relay disconnected.

  • Page 13: 2.0 Information On Installation

    Information on installation...

  • Page 14: Safety Information

    Safety information Electrical safety Before opening the cabinet, the solar inverter must be disconnected from the grid and from the PV generator. The solar inverter continues to conduct a hazardous voltage internally and at the connection sockets for the PV generator for ca.
  • Page 15 Information on cleaning Before cleaning, disconnect the system from the power grid by opening the grid breaker (main fuse) and open the DC switch on the PV generator, in order to exclude the danger of electric shocks. Use a soft, dry cloth to clean the system. Never use corrosive, solvent-containing or abrasive cleaners or polishes.
  • Page 16 Installation The solar inverter must be installed by a trained, qualified electrician. A special tool is necessary for installation. Please read this chapter very carefully. Warm 150 mm Cool 150 mm...

  • Page 17: Installation

    Requirements on the place of installation · Mechanical bearing capacity During installation please bear in mind that the solar inverter weighs 26 kg. The installation base must be firm and capable of continuously bearing the weight. · Thermal interaction The installation base must consist of flame-retardant material (e.g.
  • Page 18 Electrical connection and cable entry For installation, please observe the instructions in the "Setup" leaflet! – DC – DC Fig.: Inlets on the unit underside If the solar inverter is fixed to the installa- tion frame, the electrical connection can be led through.
  • Page 19 Grid connection The grid connection of the solar inverter must have 5 wires (L1, L2, L3, PE, N). Cable cross-sections of 5 x 4 mm2 are recommen- ded. The solar inverter is connected to the supply grid via the circuit board terminals inside the unit.
  • Page 20 You must use adequately dimensioned cable cross-sections in order to avoid a considerable increase in the grid impedan- ce between the domestic distribution and the solar inverter. The terminal range of the AC terminals is 0.5 to 6 mm2 for rigid cables and 0.5 to 10 mm2 for flexible cables.
  • Page 21 PV generator connection · Preparation Execute the DC cabling according to your electrician's system dimensioning. Check each PV string for correct functioning by performing a no-load voltage current and short-circuit current measurement. To achieve the necessary protection against hazardous contact voltage during the installation of PV systems, the positi- ve and negative conductors must be kept separate from the ground potential (PE).
  • Page 22 Important information · The direct PV generator voltage is availa- ble internally after connecting the PV generator to the solar inverter via the DC connectors and switching on the PV generator switch! · Please note that the input capacitors are still charged even after switching off the PV generator switch or removing the PV generator plug connection!
  • Page 23 · The DC voltage can be up to 750 V. The unit may only be opened by a qualified electrician! · Always disconnect the PV generator side first by opening the PV generator switch, and then the grid connection by isolating the relevant mains fuse! ·...
  • Page 24 Communication connections Via the communication connections (inter- faces), operating data can be retrieved from the data memory with an external computer and specific operating settings made. Two interfaces are available: RS 232 and RS 485. The standard communication interface is the RS 232 interface, which is installed in all current PCs and notebooks.
  • Page 25 · Connection Remove the cover of the solar inverter before connecting an interface cable. Pay heed to all safety hints (Pages 90 and 91). You will find the necessary cable terminal block with the RS 485+, RS 485-, GND_G, TX, RX, GND_G, TX 2, RX 2 connections on the board in the centre, bottom left (see figure on the left).
  • Page 26 Connecting the sensors · Optional irradiation sensor The optional addition of an irradiation sensor (type Si-01TC-T from Ing.-Büro Mencke & Tegtmeyer ) with integrated PT-100 temperature sensor for tempera- ture measurement enables recording of the irradiation data and the correspon- ding module temperature in the cycle of the internal data memory.
  • Page 27 Configuration of the cable terminal block: Temperature sensor measuring signal: Solar radiation measuring signal: Positive supply, 5V: Supply, GND: Using a small screwdriver, press the orange terminal. The terminal will open. Insert the cable stripped to a minimum of 11 mm into the respective terminal hole. Loosen the screwdriver.

  • Page 28: Commissioning

    Commissioning Connect the solar inverter internally via the ground cable (yellow-green) to the cabinet cover. (See also Setup, step 7) Put the cabinet cover on. Screw it down tightly with the four screws on the front. Do not place any objects (e.g. this manu- al) on the cabinet of the solarinverter.
  • Page 29 in cloudy weather. This is normal, and does not affect either the yield or the mode of functioning of the solar inverter. · Switching off Disconnect the PV generator side first by opening the PV generator switch, and then the grid connection by isolating the relevant mains fuse.
  • Page 30 Configurations The solar inverter is basically configured with the Sunways NT Monitor program, using a laptop or PC (see enclosed CD). In this regard please read the chapter «System Monitoring and Diagnosis» and «Sunways NT Monitor». However, language setting, LCD contrast and total energy offset (only to be used in the event of replacement) must be configured directly on the unit.
  • Page 31 This is the only exception for which work may be performed on the open unit under voltage! Remove the cabinet cover to carry out the configuration. The following settings can be performed using the illustrated keys: Fig.: The setting keys are located beneath the display. ·...
  • Page 32 Use insulating material to press the keys (e.g. a plastic rod). Avoid direct contact with the printed circuit board, so that the electronics cannot be damaged by electro- static charging. The reset key (RST) only Structure and menu levels for configuration PERFORMANCE OPERATING DATA START...
  • Page 33 screen, you can reach the next menu level with the UP/DOWN key. The illustrated structure facilitates settings on the menu levels. Then save your settings by pressing the ESC/CUR key. SOFTWARE TOTAL POWER LANGUAGE LCD CONTRAST +/– +/– +/– VERSION OFFSET ENG./GER.

  • Page 34: Information On Operation

    Information on operation...

  • Page 35: 3.1 Monitoring And Diagnosis

    3.1 Monitoring and diagnosis Display The dot matrix LCD display is integrated into the cabinet of the solar inverter so that it is easily visible. The display consists of 16 characters and 2 lines. The top line 1 shows the current feed-in power of the solar inverter.
  • Page 36 Data memory Your solar inverter is equipped with an internal data memory as standard. This data memory provides you with a detailed view of the mode of functioning and the relevant values of your solar power supply at all times. You can access these data with the help of the NT Monitor software described below.

  • Page 37: Sunways Nt Monitor Software

    Sunways NT Monitor software General information The Sunways NT Monitor visualisation soft- ware was developed for PV system monito- ring and configuration of the solar inverter using PC. It is contained on the enclosed CD and can also be downloaded free of charge on the Internet from www.sunways.de.
  • Page 38 from ICP-Deutschland, (available from your specialist dealer), which will guarantee reliable data transfer. The addresses of the solar inverter must be input in the solar inverter using the Sunways NT Monitor software or input directly with the keys illustrated on page 107.
  • Page 39 Connection and circuitry options Individual PV system with maximum distance of 50 m between solar inverter and PC Connection to PC via RS 232 (1) This connection can be used to read out an individual solar inverter if the distance from the PC used does not exceed 50 m.
  • Page 40 (2) Individual PV system with modem for remote inquiry Connection to modem via RS 232 (2) To install the remote inquiry of an indi- vidual solar inverter, the RS 232 signal can be routed directly from the solar inverter to the remote modem. Cable type B is used for this purpose.
  • Page 41 (3) PV system for 2 to 99 solar inverters with interface converter (I C) Connection to PC via RS 485 / RS 232 (3) Up to 99 solar inverters can be con- nected together and read out using this connection. In this case, there is a maxi- mum cable length of 500 m between RS 485 RS 232...
  • Page 42 The signal is looped through all units. Two «RS 485+» terminals and two «RS 485-» terminals are located on each terminal block. This means that the signal can be led into the solar inverter at one terminal and out of the solar inverter at the other termi- nal.
  • Page 43 Connection to modem via RS 485 / RS 232 (4) If several solar inverters are to be con- nected to the remote inquiry, then the individual inverters are connected together by means of the RS 485 signal, as when reading out several units locally. This signal is converted by the interface converter into the RS 232 signal, from where it is led to the modem using cable type C.
  • Page 44 Configuring the interface cables Cable type A Female connector to PC, 9-pole Cable type B Connector to modem, 9-pole Signal cables to the solar inverter on X400 Signal cables to solar inverter on X400...
  • Page 45 Cable type C Connector to modem, 9-pole Locating jumper JP400 in the Sunways Solar Inverter Please check the correct position of jum- per JP400, depending on your selected communication circuit. You will find this jumper above the communication connec- tions (see figure opposite). Connector to interface converter...
  • Page 46 Sunways NT Monitor data acquisition · Online values DC voltage (U_DC), AC voltage (U_AC), AC current (I_AC), date, time, AC power, module temperature, module irradiation, «fed-in today», «fed-in since commissio- ning», error. · 15 minute values DC voltage (U_DC), AC voltage (U_AC), AC current (I_AC), date, time, temperature, irradiation, «fed-in in 15 minutes», accumu- lated daily total of all 15 minute average...
  • Page 47 Operation of Sunways NT Monitor After installing the Sunways NT Monitor software on your PC, you can start the program. The word «Sunways» will now appear on your screen. On the menu bar at the top, you will see the four menu areas «Program», «Data», «Settings»...
  • Page 48 You can call up «Daily values» and «Monthly values» in the same way, by clicking on the respective keys. Exit the window with the «Close» key. You will return to the «Settings» menu. · Help menu You will find further helpful information on operating the Sunways NT Monitor software in the «Help»...

  • Page 49: Fault Indications

    Fault indications Your solar inverter operates fully automati- cally and maintenance-free. However, if operational faults occur due to external or internal causes, these will be displayed on the screen. · AC over/undervoltage (3-phase) Your solar inverter monitors the limits of minimum and maximum permissible 3-phase grid voltage.
  • Page 50 · DC overvoltage A maximum no-load voltage of 750 V is permitted for the PV generator. All components of the DC input are ade- quately dimensioned with a safety factor. If the threshold is exceeded, the solar inverter stops the feed-in and a «DC over- voltage error»...

  • Page 51: Fault Diagnosis

    Fault diagnosis Fault display Causes Overtemperature The maximum permissible ambient temperature of 40°C has been exceeded. The necessary air circulation was not taken into account during installation. Objects have been stored on the heat sink, impeding free convection. The maximum DC voltage Overvoltage has been exceeded.
  • Page 52 Fault display Causes UAC_1 The grid voltage is too low UAC_3 or too high. AC under/over- voltage The cable cross-section in the AC feed line to the solar inverter is too small. Your solar system feeds into a spur line, which is inade- quately dimensioned.
  • Page 53 Fault display Causes The AFI error is displayed if Residual current a residual current has occur- red in the PV system and the solar inverter has sub- sequently disconnected from the grid. Incorrect time, The battery is empty. date are stored in Sunways NT Monitor with incorrect time...

  • Page 54: Warranty Terms And Conditions

    Warranty terms and conditions · Warranty period The warranty period is five years from purchase of the solar inverter by the end user. Please complete the enclosed war- ranty card and return it to Sunways AG. Please keep the original invoice with the date of purchase in a safe place.
  • Page 55 · Exclusion of liability Warranty claims and liability are excluded for direct or indirect damages due to: · Interventions, modifications or attempted repairs · Inadequate ventilation · Force majeure (e.g. lightning strike, water damage, vandalism, fire, overvoltage, thunderstorms etc.) · Inappropriate transport ·...
  • Page 56 Appendix...

  • Page 57: Subject And Abbreviation Index

    Subject and abbreviation index Designation AFI, RCD Description Alternating Current: grid current Operator protection in the event of residual currents AFI: Universal Sensitive Residual Current RCD: Residual Current Device Direct Current PV generator side of the solar inverter Electromagnetic Compatibility Electricity Board Current used to operate the solar inverter Identification of class of protection against external...
  • Page 58 Designation Description Grid impedance AC resistance of grid, impedance DC and AC rated power: Power which the inverters can permanently consume (DC) or emit (AC). Temperature sensor Photovoltaic PV generator switch DC load break switch to cut off the PV generator from the solar inverter Voltage: specifies the normal operating voltage at which the solar inverter is operated...

  • Page 59: Function And Information Index

    Function and information index Functional principle and explanations The electrical energy of the PV generator is buffered by a capacitive storage, from where it is fed into the public grid via a solar inverter synchronised with the grid, with an ideal phase angle of [cos phi = 1]. A sinusoidal current with a very low harmo- nic distortion is injected into the public grid by the current injection inductor.
  • Page 60 · Grid protection The grid protection is a powerful relay which ensures reliable grid disconnection in the case of error and for night switch- off. This relay fulfils the requirement for trouble-free grid disconnection. · Microcontroller As well as system management, the efficient microcontroller undertakes additional tasks, such as saving data and communication.
  • Page 61 The NT 2600 model is switched off at an absolute residual cur- rent of 130 mA, the NT 4000 model at an absolute residual current of 200 mA and the NT 6000 model at an absolute residual current of 300 mA.
  • Page 62 Block diagram PV-GENERATOR DC-FILTER DIFFERER. MEASUREMENT IRRADIATION SENSOR AND TEMPERATURE SENSOR CAPACITIVE STORAGE (OPT.) RS 232 RS 485 ≈ ® HERIC TEMP CONTROLLER CONTROL DATAPRO RADIATION TEMPERATURE DATA MICRO- CONTROLLER...

  • Page 63: Grid Protection

    CURRENT IMPRESSION AC FILTER GRID PROTECTION RESIDUAL CURRENT INDUCTOR CESSING DIFFERER. MEASUREMENT GRID LCD-DISPLAY KEYBOARD L 1, L 2, L E (2 LINES) N, P E...
  • Page 64 Grid voltage Grid voltage tolerance range Nominal current Max. current Distortion factor at Pn Reactive power factor (cos phi) Output current Solar Inverter NT 2600 1500 bis 2750 W 2300 W < 0.005 W 15 W 400 V 350 ≤ U ≤...
  • Page 65 Solar Inverter NT 4000 2000 bis 4125 W 3400 W < 0.005 W 15 W 400 V 350 ≤ U ≤ 650 V 750 V 410 V 340 V 10 A 8.5 A 2 (with adapter: 4) 97 per cent 96.4 per cent 3300 W 3300 W...
  • Page 66 Grid voltage monitoring Earth fault protection Output characteristic Grid connection fuse layout Required number of grid connection phases Number of feed-in phases (230 V single-phase) Data interfaces Sensor interfaces Display System of protection against envir. influences Relative air humidity, max. Cooling Ambient temperature (Celsius) Dimensions (height x width x depth)
  • Page 67 threephase RCD (universally sensitive) current source 25 A RS 232, RS 485 irradiation, temperature LCD, 2 x 16 characters IP 54 95 per cent free convection - 25°C to 40°C 510 x 300 x 180 mm 26 kg silent (< 35 dB (A)) 5 years (10 years) threephase RCD (universally sensitive)
  • Page 68 TYCO SOLARLOK connectors The TYCO SOLARLOK connectors are only approved for connection to permanently laid cables! They must not be disconnected under load! The circuit must be interrupted at a suitable point! The cables must be provided with a suitable adhesive label close to the TYCO SOLARLOK connector! The TYCO SOLARLOK connectors must...
  • Page 69 Any type of soiling (dust, humidity etc.) will negatively affect the operation of the system over the desired period of use. This applies particularly for the usability of the seals and crimping of the contacts. The utmost care must therefore be taken to work cleanly during installation.
  • Page 70 The EMC characteristics of this product can change in a mounted / assembled state. An EMC check must thus be made for the PV-System by the manufacturer of the PV-System. Solar Inverter Sunways AG, Photovoltaic Technology Macairestr. 3 - 5, D - 78467 Konstanz Sunways NT 6000, NT 4000, NT 2600 2003-05-15 Standard EN 50178 Title...
  • Page 71 PV-System. This declaration therefore does not guarantee the EMC characteristics of the end product. Solar Inverter Sunways AG, Photovoltaic Technology Macairestr. 3 - 5, D - 78467 Konstanz Sunways NT 6000, NT 4000, NT 2600 2003-05-15 Standard EN 50082-2 (EN 61000-4-2, -4-3, -4-4, -4-6, -4-8) EN 55014-1;...
  • Page 72 The maximum output power of the solar inverter has to be declarated as a max. 10 minute average. Solar Inverter Sunways AG, Photovoltaic Technology Macairestr. 3 - 5, D - 78467 Konstanz NT 6000 NT 4000 4,6 kVA 3,3 kVA 5 kVA 3,3 kVA 1,08 Konstanz, 2004-08-05 Ort, Datum Roland Burkhardt,CEO NT 2600 2,2 kVA 2,2 kVA...
  • Page 73 Solar Inverter Sunways AG, Photovoltaic Technology Macairestr. 3 - 5, D - 78467 Konstanz Sunways NT 6000, NT 4000, NT 2600 2003-05-15 Standard Title In-plant generation on low-voltage-...
  • Page 74 No part of this document may be reproduced in any form, without prior written permission of Sunways AG and the Sunways licensors. Registered trademarks Sunways NT 2600, NT 4000 and NT 6000 and the Sunways logo are registered trademarks of Sunways AG, Constance. ® HERIC is a registered trademark of Fraunhofer, Munich.
  • Page 75 Concept and design: Denklabor Kommunikationsbüro GmbH, Lucerne/Switzerland...
  • Page 76 Sunways AG Photovoltaic Technology Macairestraße 3 - 5 D - 7 8 4 6 7 Konstanz Telefon + 49 7531 996770 Fax + 49 7531 996774 4 4 E-Mail info @ sunways.de www. sunways.de...

This manual is also suitable for:

Nt 4000Nt 6000

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