Ledvance LT-25K F2 User Manual
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Ledvance LT-25K F2 User Manual

Ledvance LT-25K F2 User Manual

Grid-connected pv inverter
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UESR MANUAL FOR LEDVANCE
GRID-CONNECTED PV INVERTER
APPLICABLE MODLES
LT-25~40K F2
LEDVANCE.COM

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Summary of Contents for Ledvance LT-25K F2

  • Page 1 UESR MANUAL FOR LEDVANCE GRID-CONNECTED PV INVERTER APPLICABLE MODLES LT-25~40K F2 LEDVANCE.COM...

  • Page 2: Table Of Contents

    CONTENTS INTRODUCTION Product Description Packaging SAFETY INSTRUCTIONS Safety Symbols General Safety Instructions Notice For Use Notice for Disposal OVERVIEW Front Panel Display LED Status Indicator Lights Keypad PRODUCT HANDING AND STORAGE Product handling Product Storage INSTALLATION Select Location for the Inverter Mounting the Inverter Electrical Connections START &...

  • Page 3: Introduction

    INTRODUCTION Product description Solis three phase inverter is suitable for utility-scale PV projects . This manual covers the three phase inverter model listed below: LT-25K F2, LT-30K F2, LT-33K F2, LT-36K F2, LT-40K F2 LED lights LCD display 4 buttons Figure 1.1 Front view...

  • Page 4: Packaging

    INTRODUCTION Packaging When you receive the inverter, please ensure that all the parts listed below are included: Inverter x1 Back plate x1 Cross screws x4 DC connectors x6 or x8 (On basis of actual string Hex screws x2 RJ45 connector x1 number of inverter) Quick Installation...

  • Page 5: Safety Instructions

    SAFETY INSTRUCTIONS Safety symbols Safety symbols used in this manual, which highlight potential safety risks and important safety information, are listed as follows: WARNING WARNING symbol indicates important safety instructions, which if not correctly followed, could result in serious injury or death. NOTE NOTE symbol indicates important safety instructions, which if not correctly followed, could result in some damage or the destruction of the inverter.

  • Page 6: Notice For Use

    SAFETY INSTRUCTIONS CAUTION The PV array (Solar panels) supplies a DC voltage when they are exposed to sunlight. CAUTION Risk of electric shock from energy stored in capacitors of the Inverter. Do not remove cover for 5 minutes after disconnecting all power sources (service technician only). Warranty may be voided if the cover is removed without unauthorized.

  • Page 7: Overview

    OVERVIEW Front panel display POWER OPERATION ALARM ENTER DOWN Figure 3.1 Front Panel Display LED status indicator lights Light Status Description The inverter can detect DC power. POWER No DC power or low DC power. The inverter is operating properly. OPERATION The inverter has stopped to supply power.

  • Page 8: Product Handing And Storage

    PRODUCT HANDING AND STORAGE Product handling Please review the instruction below for handling the inverter: The red circles below denote cutouts on the product package. Push in the cutouts to form handles for moving the inverter (see Figure 4.1). Figure 4.1 move the inverter Open the carton, then two people handle both sides of inverter through the area denoted dotted line.

  • Page 9: Product Storage

    PRODUCT HANDING AND STORAGE Product storage If the inverter is not to be installed immediately, storage instructions and environmental conditions are below: Use the original box to repackage the inverter, seal with adhesive tape with the desiccant inside the box. Store the inverter(s) in a clean and dry place, free of dust and dirt.

  • Page 10: Installation

    INSTALLATION Select a location for the inverter To select a location for the inverter, the following criteria should be considered: WARNING: Risk of fire Despite careful construction, electrical devices can cause fires. Do not install the inverter in areas containing highly flammable materials or gases. Do not install the inverter in potentially explosive atmospheres.
  • Page 11 INSTALLATION Vertical Backward √ √ ≤15? Inverted Horizontal × × Install on a vertical surface or structure capable of bearing the weight. Please install the inverter vertically. If the inverter cannot be mounted vertically, it may be tilted backward to 15 degrees from vertical.

  • Page 12: Mounting The Inverter

    INSTALLATION Mounting the inverter Back hanging plate size: Figure 5.3 Inverter wall mounting Refer to figure 5.4 and figure 5.5. Inverter shall be mounted vertically. The steps to mount the inverter are listed below. Refer to Figure 5.4, the holes for expansion bolt based on the hole diameter of bracket (M10*70) , using the percussion drilling with the 10mm drill need to stay vertically on the wall.
  • Page 13 INSTALLATION WARNING The inverter must be mounted vertically. Lift the inverter and hang it on the bracket, and then slide down to make sure they match perfectly. Figure 5.5 Install the inverter If the installation position is high, the inverter cannot be directly mounted on the mounting plate, and the hoisting rope is hoisted through the two lifting holes.

  • Page 14: Electrical Connections

    INSTALLATION Electrical connections Inverter designs quick-connect terminal, so top cover needn't open during electrical connection. The sign meaning located the bottom of inverter, as shown below in table 5.1. All electrical connections are suit for the local or national standard. DC 1 ~ DC 8 DC input terminal Switch on the DC switch...
  • Page 15 INSTALLATION Strip the ground cable insulation to a suitable length(see Figure 5.7). Figure 5.7 Suitable length IMPORTANT B (insulation stripping length) is 2mm~3mm longer than A (OT cable terminal crimping area) 2mm~3mm. Insert the stripped wire into the OT terminal crimping area and use the hydraulic clamp to crimp the terminal to the wire (see Figure 5.8).
  • Page 16 INSTALLATION Remove the screw from the heat sink ground point. Connect the grounding cable to the grounding point on the heat sink,and tighten the grounding screw, Torque is 3-4Nm(see figure 5.9). Grounding screw Figure 5.9 Fixed cable IMPORTANT For improving anti-corrosion performance, after ground cable installed, apply silicone or paint is preferred to protect.
  • Page 17 INSTALLATION Connect PV side of inverter Before connecting inverter, please make sure the PV array open circuit voltage is within the limit of the inverter. Before connection, please make sure the polarity of the output voltage of PV array matches the“DC+”and“DC-”symbols.
  • Page 18 INSTALLATION Figure 5.13 Insert the Wire into the Figure 5.12 Disassemble the Connector Cap nut Connector Cap nut and contact pin Crimping plier Figure 5.14 Crimp the contact pin to the wire Figure 5.15 Connector with Cap nut Screwed on Figure 5.17 Connect the DC Figure 5.16 Multimeter measurement Connectors to the Inverter...
  • Page 19 INSTALLATION Connect grid side of inverter For the AC connection, 10-35mm² cable is required to be used. Please make sure the resistance of cable is lower than 1.5ohm. Cable specification Copper-cored cable Range 10~35 Traverse cross sectional area (mm²) Recommended Range 22~32 Cable outer diameter (mm)
  • Page 20 INSTALLATION Figure 5.19 wiring NOTE Solis three phase inverters integrate neutral connection point. However, with or without neutral connected won't affect the normal operation of inverter itself. Please refer to the local grid requirement if need neutral cable connected. Inverter monitoring connection The inverter can be monitored via Wi-Fi or GPRS.
  • Page 21 INSTALLATION Monitoring system for multiple inverters Multiple inverters can be monitored by RS-485 daisy chain configuration. (See figure 5.26). Wi-Fi box Router Inverter 1 Inverter 2 Inverter n Internet RS485terminal Ethernet RS485 IN | OUT RS485 IN | OUT RS485 IN | OU T GPRS box Internet RS485terminal...
  • Page 22 To protect the inverter's AC grid connection conductors, Solis recommends installing breakers that will protect against overcurrent. The following table defines OCPD ratings for the inverters. Rated output Current for Inverter Rated voltage(V) current (Amps) protection device (A) LT-25K F2 220/380,230/400 38.0/36.1 LT-30K F2 220/380,230/400 45.6/43.3 LT-33K F2 220/380,230/400 50.1/47.6...
  • Page 23 INSTALLATION Meter Connection(optional) The inverter can work with a three phase smart meter to achieve Export Power Management function and/or 24hour consumption monitoring function. NOTE To achieve Export Power Management function, the smart meter can be installed on either grid side or load side.

  • Page 24: Pin Connector

    INSTALLATION Pre-made Cable in Meter Package 2-Pin Connector INV L1 Grid L1 INV L2 Grid L2 INV L3 Grid L3 INV N Grid N Meter INV PE Grid PE 21 22 17 1819 20 L1 L2 L3 N PE Load Figure 5.26 Direct Insert Type Meter - “Meter in Load”...
  • Page 25 INSTALLATION Pre-made Cable in Meter Package 2-Pin Connector INV L1 Grid L1 INV L2 Grid L2 INV L3 Grid L3 INV N Grid N Meter INV PE Grid PE 21 22 17 18 19 20 Ua Ub Uc N Ia* Ia Ib* Ib Ic* Ic L1 L2 L3 N PE Load Figure 5.28 External CT Type Meter - “Meter in Load”...
  • Page 26 INSTALLATION Logic interface connection Logic interface is required by some local regulations that can be operated by a simple switch or contactor (Not available in South Africa). When the switch is closed the inverter can operated normally. When the switch is opened, the inverter will reduce it’s output power to zero within 5s.

  • Page 27: Start&Stop

    START&STOP Start the inverter To start up the Inverter, it is important that the following steps are strictly followed: Switch the grid supply main Switch (AC) ON first. Switch the DC switch ON. If the voltage of PV arrays are higher than start up voltage, the inverter will initialize. The red LED power will light.

  • Page 28: Operation

    OPERATION In normal operation, LCD screen alternatively shows inverter power and operation status (see Figure 7.1). The screen can be scrolled manually by pressing the UP/DOWN keys. Pressing the ENTER key gives access to Main Menu. Pressing the ESC key Main Menu calls back the previous menu.
  • Page 29 OPERATION Display Duration Description V_DC01: 0000.0V V_DC01: Shows input DC voltage. 10 sec i_DC01: 0000.0A I_DC01: Shows input DC current. V_A: 000.0V V_A: Shows the grid's voltage value. 10 sec I_ A: 000.0A I_A: Shows the grid's current value. V_C: 000.0V V_C: Shows the grid's voltage value.

  • Page 30: Settings

    OPERATION Lock screen Pressing the ESC key returns to the Main Menu. Pressing the ENTER key locks (Figure 7.2(a)) or unlocks (Figure 7.2 (b)) the screen. Settings The following submenus are displayed when the Settings menu is selected: 1. Set Time 2.

  • Page 31: Advanced Info

    OPERATION Advanced Info - Technicians Only NOTE To access to this area is for fully qualified and accredited technicians only. Enter menu “Advanced Info.” and “Advanced settings” (need password). Select “Advanced Info.” from the Main Menu. The screen will require the password as below: YES=<ENT>...
  • Page 32 OPERATION Model: 08 Software Version: D20001 Figure 7.7 Model Version and Software Version Daily Energy The function is for checking the energy generation for selected day. YES=<ENT> NO=<ESC> Select: 2019-01-01 Figure 7.8 Select date for daily energy Press DOWN key to move the cursor to day, month and year, press UP key to change the digit. Press Enter after the date is fixed.
  • Page 33 OPERATION Yearly Energy The function is for checking the energy generation for selected year. YES=<ENT> NO=<ESC> Select: 2019 Figure 7.12 Select year for yearly energy Press DOWN key to move the cursor to day and year, press UP key to change the digit. Press Enter after the date is fixed.

  • Page 34: Advanced Settings

    OPERATION Advanced Settings - Technicians Only NOTE To access to this area is for fully qualified and accredited technicians only. Please follow 7.4 to enter password to access this menu. Select Advanced Settings from the Main Menu to access the following options: 1.
  • Page 35 OPERATION Below is the setting range for “User-Def”. Using this function, the limits can be changed manually. OV-G-V1: 220---374V OV-G-F1: 50.1-65Hz OV-G-V1-T: 0.01---300S OV-G-F1-T: 0.01---300S OV-G-V2: 220---374V OV-G-F2: 50.1-65Hz OV-G-V2-T: 0.01---300S OV-G-F2-T: 0.01---300S UN-G-V1: 110---277V UN-G-F1: 45-59.9Hz UN-G-V1-T: 0.01---300S UN-G-F1-T: 0.01---300S UN-G-V2: 110---277V UN-G-F2: 45-59.9Hz UN-G-V2-T: 0.01---300S...
  • Page 36 OPERATION 24H Switch This function controls the 24H hours consumption function enable or disable. Enable Disable Figure 7.19 Set 24H ON/OFF NOTE When this is enabled, the inverter LCD will still be alive at night with the power LED light on. If the grid is in malfunction at night, the system can’t recover even after the grid is back to normal but the consumption data will still be recorded in the meter.

  • Page 37: Maintenance

    OPERATION Power control Active and reactive power can be set through power setting button. There are 5 item for this sub menu: 1. Set output power 2. Set Reactive Power 3. Out_P With Restore 4. Rea_P With Restore 5. Select P F Curve This function is applicable by maintenance personnel only, wrong operation will prevent the inverter from reaching maximum power.
  • Page 38 OPERATION Enable logic interface settings When select G98 or G99 standard to use the logic interface function, please follow below settings to enable the DRM. DRM default setting is “OFF” , if DRM set “ON”, but the logic interface un-connected to the switch or the switch is open, the inverter HMI will display “Limit by DRM”...
  • Page 39 OPERATION Internal EPM Set NOTE This section includes two functions related to the smart meter. Please refer to section 5.3.6 for detailed connection diagrams. Function 1: Internal Export Power Management Function Inverters can work with a smart meter to dynamically limit the export power of the system. Zero injection can be achieved.
  • Page 40 OPERATION Select EPM Settings from the Main Menu to access the following options: 1. Mode Select 2. Backflow Power 3. Fail safe ON/OFF 4. Backflow Work Mode Mode Select There are 4 settings in this menu as below: 1. OFF 2.

This manual is also suitable for:

Lt-30k f2Lt-33k f2Lt-36k f2Lt-40k f2Lt 25k f2-dc-afci-wietLt 40k f2-dc-afci-wiet ... Show all

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