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MANUAL
User Manual for Sunways
Solar Inverters NT 2600, NT 4000 and
NT 6000
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510 mm 180 mm 300 mm
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List of Contents 1.0 General information 1.1 Safety information 83 General safety information 84 Opening the unit 1.2 Sunways Solar Inverters 85 Scope of supply, inspecting the delivery NT 2600, NT 4000 and NT 6000 86 Integration into the PV system EN Design of the PV generator 87 Standard components of a PV system 88 Protection concept 2.0 Information on installation 2.1 Safety information 90 Electrical safety Mechanical safety 91 Information on cleaning 2.2 Installation 93 Requirements on th
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2.3 Commissioning 104 Switching the solar inverter on and off 106 Configurations 108 Structure and menu levels for configuration 3.0 Information on operation 3.1 Monitoring and diagnosis 111 Display 112 Data memory 3.2 Sunways NT Monitor software 113 General information 114 Initialising the remote modem 115 Connection and circuitry options 120 Configuring the interface cables 122 Sunways NT Monitor data acquisition 123 Operation of Sunways NT Monitor 3.3 Fault indications 125 Screen displays 3.4
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4.0 Appendix 4.1 Subject and abbreviation index 133 Designation and description 4.2 Function and information index 135 Functional principle and explanations 138 Block diagram 140 Technical data 144 TYCO SOLARLOK connectors 146 Conformity and safety declarations EN 150 General exclusion of liability, rights, registered trademarks 81
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1.0 General information 82
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1.1 Safety information General safety information The User Manual contains safety hints. All safety hints contained in this section These are identified by a triangle with an and throughout the User Manual must exclamation mark. be complied with at all times to guarantee the user's safety. The described product must not be operated if any mechanical or electrical components are defective. ! Before commissioning the system, we EN strongly advise you to carefully read and heed the instructions!
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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. The energy storage capacitors are only fully discharged after this period. After disconnecting the unit from the grid and from the PV generator, you must wait at least five minutes before opening the unit. 84
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1.2 Sunways Solar Inverters NT 2600, Inspecting the delivery NT 4000 and NT 6000 The condition of our products is checked Scope of supply prior to delivery. Although our products are carefully packed in recyclable packing, · Sunways Solar Inverter in the NT series transportation damages can still occur. · Installation frame These are generally the transport compa- · Manual, setup, warranty card, CD-Rom ny's responsibility. with software · 2 pairs of TYCO SOLARLOK connectors Please inspect the de
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Integration of the solar inverter into the · Check your PV generator for soiling ca. PV system every three years. This occurs particularly at the lower edge of the modules and Design of the PV generator forms a film, which even heavy rain can- not wash away. Decreases in yield can be The technical data of the selected PV prevented by cleaning with a wet cloth generator must be within the specifica- or a brush. tion of the solar inverter (see Technical Data). The Sunways NT Sundim design · Avo
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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 (1) PV generator switch PV (2) Irradiation sensor with integrated temperature sensor EN (3) Mains fuse (1) (3) (4) PV (4) Energy meter (2) PC Grid PV generator switch: Designed as DC load break cut-out to cut off the PV generator from the solar inverter. Dimensioning: min. 800 V, ≥ 16 A Grid connection: 3-pha
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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. In addition, the following protective devi- ces are provided on both grid and PV generator side: · Grid-side varistors Protect the power semiconductors
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2.0 Information on installation 89
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2.1 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. five minutes after disconnecting from the PV generator. The energy storage capacitors are only fully discharged after this period. After disconnecting the solar inverter from the grid and PV generator, you must wa
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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 EN or abrasive cleaners or polishes. 91
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300 mm 300 mm 2.2 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 Air 150 mm 150 mm Cool Air 92 ➟ ➟ ➟ ➟
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Requirements on the place of installation If installing the solar inverter in a switch box, ensure adequate heat dissipation. · Mechanical bearing capacity During installation please bear in mind The ambient temperature must not fall that the solar inverter weighs 26 kg. The below or exceed –25°C or +40°C. installation base must be firm and capable of continuously bearing the weight. The solar inverter should not be exposed to direct solar irradiation, so as to protect it · Thermal interaction f
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Electrical connection and cable entry If the solar inverter is fixed to the installa- tion frame, the electrical connection can be led through. The unit may only be ope- ned by a qualified electrician. The cabinet ! cover must first be released and removed. For installation, please observe the The following cable inlets are located on instructions in the "Setup" leaflet! the underside: RS 232, RS 485, Irradiation sensor with inte- grated temperature sensor AC wiring loom –DC –DC +DC +DC cable
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Grid connection As line safety element in the grid feed-in direction, we recommend a 3 x 25 A auto- matic cut-out. No consumption units must be connected to the feed line from the ! solar inverter to the automatic cut-out. The solar inverter only feeds in via termi- The grid connection of the solar inverter nal L1. must have 5 wires (L1, L2, L3, PE, N). Cable cross-sections of 5 x 4 mm2 are recommen- If several solar inverters are operated in ded. parallel, the feed-in phase L1 of the unit EN
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You must use adequately dimensioned · Connect cables L1, L2, L3, PE and N to cable cross-sections in order to avoid a the relevant circuit board terminal with considerable increase in the grid impedan- the help of a slot-head screwdriver (see ce between the domestic distribution and figure below). 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. With a high grid impedance, i.e. with a long line or too small a cr
