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ZCS TL Series, User Manual

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Identificazione: MD-AL-GI-00 
Rev. 4.0 del 31.01.18 - Applicazione: GID 

Manual of 07/06/2019 Rev. 1.1 “User Manual for 20K-33KTL” 

 

4.1.

 

Electrical connections 

 

 

Figure 17 – Steps for connecting the cables 

 

4.2.

 

Connecting PNGD cables (grounding)

 

Connect the 20K-33K TL inverter to the ground electrode using ground protection cables (PGND). 

 

 
The inverter does not have a transformer, therefore the positive pole and 

negative pole of the photovoltaic string does NOT need to be grounded. 
Otherwise, the inverter may fail. All non-current-carrying metal parts (such as 
the PV module frame, PV rack, housing of the combiner box, and housing of the 

inverter) in the PV power system must be connected to the ground. 

 

Attention

 

 

Note:

 Connect the PGND cable before connecting the AC, DC power and communication cables. 

For systems with one inverter, connect the PGND cable to the ground. For systems with multiple inverters, 
connect the PGND cables of each inverter to the ground electrode using equipotential connections. 

If the installation place is near the ground, connect the PGND cable to the ground before installing the 
inverter on the wall. 

 

Figure 18 – Connecting the ground terminal

 

 

 

Summary of Contents for TL Series

Page 1: ...1 REA AR 94189 Azienda Certificata ISO 9001 Certificato n 9151 CNS0 IT 17778 Zucchetti Centro Sistemi S p A Green Innovation Division Via Lungarno 248 52028 Terranuova Bracciolini Arezzo Italy tel 39...

Page 2: ...cks before installation 20 3 3 Installation tools 21 3 4 Installation position 23 3 5 Moving the 20K 33K TL inverter 25 3 6 Installing the 20K 33K TL inverter 26 4 Electrical connections 27 4 1 Electr...

Page 3: ...zione GID Manual of 07 06 2019 Rev 1 1 User Manual for 20K 33KTL 7 1 Troubleshooting 65 7 2 Maintenance 72 8 Uninstalling 73 8 1 Steps for uninstalling the inverter 73 8 2 Packaging 73 8 3 Storage 73...

Page 4: ...uipment even when it is transferred to another user or plant Copyright statement The copyright of this manual belongs to Zucchetti Centro Sistemi S p A No part of this manual may be copied including t...

Page 5: ...up the inverter in the photovoltaic energy system and for operators of the photovoltaic system Symbols used This manual provides information for safe operation and uses certain symbols to ensure the...

Page 6: ...njury or damage Before installing and operating the equipment the electrical circuit of the strings must be disconnected by opening the string circuit breaker to interrupt the high voltage DC of the p...

Page 7: ...nections Please pay attention to the electrical regulations on accident prevention when dealing with photovoltaic inverters Before connecting the mains power be sure to disconnect the photovoltaic mod...

Page 8: ...in operation Wear protective gloves Attention Maintenance and repair Before carrying out any repairs disconnect the inverter from the mains network AC side and from the photovoltaic system DC side Aft...

Page 9: ...must be securely connected to the ground Attention Ensure the correct DC input voltage which must be below the maximum allowable DC voltage Overvoltage can cause permanent damage to the inverter or ot...

Page 10: ...rs are indicated in this section Description of functions It describes how the 20K 33K TL inverters and their internal operating modules work Efficiency curve It describes the efficiency curves of the...

Page 11: ...ules can be connected to the input of the inverter do not connect batteries or other power supply sources A disconnecting switch must be installed between the inverter and the grid which must be sized...

Page 12: ...ensation valve 2 DC switch 3 DC positive pole connectors 4 Wi Fi inlet 5 RS485 cable entry 6 AC cable entry 7 Cooling fans 8 DC negative pole connectors The inverter model must be chosen by a qualifie...

Page 13: ...v 4 0 del 31 01 18 Applicazione GID Manual of 07 06 2019 Rev 1 1 User Manual for 20K 33KTL Figure 5 Front side and back view of the inverter and bracket Labels on the inverter Figure 6 Do not remove t...

Page 14: ...ents Operating principles The DC switch disconnects the internal circuits from the DC input for maintenance purposes The control board of the strings measures the input current and voltage analyses th...

Page 15: ...15 74 Identificazione MD AL GI 00 Rev 4 0 del 31 01 18 Applicazione GID Manual of 07 06 2019 Rev 1 1 User Manual for 20K 33KTL Figure 7 Block diagram of the 20K 33KTL inverters...

Page 16: ...he amount of active power fed into the grid at the desired value expressed as a percentage To achieve this limitation it is necessary to use an external device Anti Reverse Power Controller not includ...

Page 17: ...ger the protection resulting in separation from the grid and shutdown of the operation C Grid monitoring Continuous monitoring of the grid voltage to ensure that the voltage and frequency values stay...

Page 18: ...ual for 20K 33KTL Input voltage derating curve for an Azzurro ZCS 20K 33K TL inverter Figure 9 Input voltage derating curve for an Azzurro ZCS 20K 33 KTL inverter Output voltage derating curve for an...

Page 19: ...handling and transporting the inverter Choose an appropriate mounting position and surface Assign at least two people to install the inverter Attention 3 1 Installation process This section describes...

Page 20: ...rials from the box 24 hours before installing the inverter Checking the product After removing the inverter from its packaging check that the product is intact and complete If any damage is found or c...

Page 21: ...o Tool Function 1 Drill Recommended drill bit 8 mm To drill holes in the wall for fixing the bracket 2 Screwdriver To screw and unscrew screws for the various connections 3 Wire stripper To prepare th...

Page 22: ...ors from the inverter 11 Diagonal pliers To cut and tighten the cable ends 12 Cable stripping tool To remove the outer sheath of the cables 13 RJ45 2 pieces 14 Cable cutter To cut the power cables 15...

Page 23: ...1 1 User Manual for 20K 33KTL 20 ESD gloves Protective clothing 21 Safety goggles Protective clothing 22 Protection mask Protective clothing 3 4 Installation position Choose an appropriate installatio...

Page 24: ...igure 13 Requirements for installing multiple inverters Note For safety reasons ZCS Spa and or its partners may not carry out any technical repairs or maintenance work or move the inverter from and to...

Page 25: ...le and the correct handling of the inverter Figure 14 Removing the polystyrene protections Figure 15 Removing the inverter from its packaging 2 Lift the inverter from its packing box and move it to th...

Page 26: ...ing drilling it is necessary to reposition the holes 2 Insert the plugs horizontally into the holes made paying attention to the force and depth with which they are inserted make sure the plug complet...

Page 27: ...imum open circuit voltage of the photovoltaic string must be less than 1000 V The 20K 33K TL inverters have two maximum power point markers MPPT All the photovoltaic modules connected in series to the...

Page 28: ...wise the inverter may fail All non current carrying metal parts such as the PV module frame PV rack housing of the combiner box and housing of the inverter in the PV power system must be connected to...

Page 29: ...crimp them using a crimping tool as shown in figure 19 Note 1 L3 is the length between the insulation layer of the ground cable and the crimped part L4 is the distance between the crimped part and the...

Page 30: ...3 Note Depending on the type of inverter select the appropriate accessories cables fuse holder fuse switch etc The open circuit voltage of the photovoltaic system must be lower than the maximum allowa...

Page 31: ...o the sun the photovoltaic generator produces a voltage that can be dangerous Before connecting the power supply make sure that the voltage of the DC cables is within the permissible operating range b...

Page 32: ...th the positive and negative connectors respectively Separate the positive and negative metal terminals after unpacking the inverter so as to avoid confusing the polarities Procedure 1 Remove the cabl...

Page 33: ...il you hear a click sound At that point the power cables will be snapped into place 6 Replace the cable glands on the positive and negative connectors and rotate them against the insulation covers 7 I...

Page 34: ...n Italy each grid connected photovoltaic system with a power output of more than 11 08 kW must be equipped with an external interface device SPI Warning Context All the AC power cables used for the in...

Page 35: ...en the power loss in the cable its length and the cross section area Cross section of the cable mm2 Maximum length m 20 KTL 25 KTL 30 KTL 33 KTL 10 34 34 27 27 The 20K 33K TL inverters are three phase...

Page 36: ...e S cable to the terminal labelled S tighten the wire using a screwdriver Connect the phase T cable to the terminal labelled T tighten the wire using a screwdriver Connect the blue neutral cable to th...

Page 37: ...t as shown in the figure below Figure 32 Connector for communication via 485 port When passing the communication cables make sure that they are separated from the power cables and away from sources of...

Page 38: ...34 Assembling the communication connector Removal procedure Remove the RJ45 connector from the inverter by removing the plug Then press the clip on the RJ45 connector and pull out the RJ45 connector C...

Page 39: ...r Manual for 20K 33KTL 2 Connect the external Wi Fi module 3 Fix the external Wi Fi module using the two screws supplied Note follow the appropriate procedure to configure the external Wi Fi adapter D...

Page 40: ...erter and data logger terminal Note in the case of a single inverter connected via RS485 or in the case of the last inverter in a daisy chain of multiple inverters connected via RS485 configure the in...

Page 41: ...d be remembered that it is always necessary to provide technical support with the serial number of the inverter and the Wi Fi adapter to allow remote monitoring via the application or website This inf...

Page 42: ...hese inverters Refer to section 6 3 for setting the Modbus address Note 4 If multiple inverters are connected to the system s monitoring device via a single RS485 RS232 converter or to the same S WE01...

Page 43: ...for 20K 33KTL Connecting the relay cable Procedure 1 Prepare the appropriate cable Remove the insulating sheath as shown in the figure below then pass the cable through the waterproof nut 2 Insert the...

Page 44: ...hat all the photovoltaic strings are securely connected to the input of the inverter AC connection Make sure that the AC switch of the inverter is off Check that the phases of the inverter are correct...

Page 45: ...rs of the 20 33K TL inverters 6 1 Operating panel and display Buttons and LED indicators Figure 37 LCD display with buttons and LED indicators Main buttons Menu Back to go back or enter the main menu...

Page 46: ...power output of the inverter the input information coming from the PV system information relating to errors etc Figure 39 Indicators in the main interface A1 Modbus communication address A2 RS485 Com...

Page 47: ...should the other grid parameters otherwise the inverter will go into an error state Check inverter is checking the insulation resistance relays and other safety requirements It also runs a self test t...

Page 48: ...press OK to enter the menu for setting the date time First set the date and then the time using the Up and Down keys then press OK to move to the next character and confirm The date and time are expre...

Page 49: ...Set Country Select 4 Set Country and press OK to enter the menu for setting the national grid connection regulations If Setting Disabled appears on the display go to step 6 Enable Country to enable t...

Page 50: ...tion 2 Alarm 3 ConfigAlarm 4 Disab Relay Below is a detailed definition of the configurations that can be set Production The relay changes over whenever it detects a connection to or disconnection fro...

Page 51: ...duced by the system before installing the current inverter which is visible from the main interface Modbus address Select 9 ModBusAddress and press OK to enter the menu for selecting the communication...

Page 52: ...m Zucchetti Centro Sistemi Spa technical support Select 13 Safety V and press OK to enter the menu for setting the protection voltage The display will show Enter PWD press OK to enter the password Ent...

Page 53: ...the display shows Incorrect try again press the Back key and enter the password again When the password has been entered correctly you can enter the menu Now you can use the Up and Down keys to selec...

Page 54: ...ensors as described in the appropriate procedure This device can be purchased from suppliers of photovoltaic materials The size of the inverter and power value you wish to feed into the grid must be s...

Page 55: ...81 S1Check and press OK to enter the relative menu from which it will be possible to enable the frequency restriction thresholds required in special cases by local regulations With the Up and Down ke...

Page 56: ...56 74 Identificazione MD AL GI 00 Rev 4 0 del 31 01 18 Applicazione GID Manual of 07 06 2019 Rev 1 1 User Manual for 20K 33KTL...

Page 57: ...operation of the inverter press the Back key to enter the main menu 2 Press the OK key to enter the Settings menu 3 Press the Down key several times until 26 Standard Self Test is shown on the screen...

Page 58: ...58 74 Identificazione MD AL GI 00 Rev 4 0 del 31 01 18 Applicazione GID Manual of 07 06 2019 Rev 1 1 User Manual for 20K 33KTL...

Page 59: ...user can access this interface from the LCD display to check the details of the alarms and alerts Errors will be listed according to the date and time they occurred so the most recent events will be l...

Page 60: ...ountry code that has been set Input Use the Up and Down keys in the System Info menu to move and the OK key to enter the 6 Input menu Here you can see the type of input of the photovoltaic strings AC...

Page 61: ...next digit and confirm If the display shows Incorrect try again press the Back key and enter the password again When the password has been entered correctly you can enter the menu and start updating t...

Page 62: ...update 9 The update process will take about 3 minutes and will run automatically The following indications will be followed a DSP1 Update b DSP2 Update c ARM Update 10 Check that the inverter complet...

Page 63: ...Follow the steps below to display the recorded alarms Press Menu Back to enter the main menu from the standard interface Select Event List in the menu screen then press OK to access the list of alarms...

Page 64: ...ect adjustment Check whether too many photovoltaic modules have been connected in series in a PV string the voltage Voc of the PV string is therefore higher than the maximum input voltage of the inver...

Page 65: ...and has caused the hardware protection to be activated ID15 ID24 are internal faults of the inverter turn off the DC switch wait 5 minutes and then turn it back on again Check that the fault is no lon...

Page 66: ...rect change it according to Section 6 3 A 10 Configuration of the Input Mode of this manual ID29 SwOCPInstant The grid current is too high Internal faults of the inverter turn off the DC switch wait 5...

Page 67: ...en the photovoltaic string and the ground in the event of a short circuit rectify the fault ID57 OverTempFault_Inv The temperature of the inverter is too high Check that the installation position and...

Page 68: ...eparable fault ID71 UnrecoverPvConfigSetWrong Incorrect input mode Check the configuration of the input mode parallel mode independent mode of the inverter as indicated in Section 6 3 C 6 Input Mode o...

Page 69: ...Off The inverter was turned off by remote control The inverter registers ID 84 in case of remote shutdown operation Check the wiring of the remote input and the port of the output control signal on th...

Page 70: ...cording to Section 6 3 A 4 Configuration of country code of this manual ID98 MicroSD card fault The microSD card is faulty or a false contact has occurred Replace the SD card ID99 ID100 Reserved Reser...

Page 71: ...trings by opening the DC circuit breaker Wait 5 minutes Remove the DC connectors Remove the AC terminals Unscrew the fixing bolt of the bracket and remove the inverter from the wall 8 2 Packaging If p...

Page 72: ...25000W 30000W 33000W Maximum AC power 22000VA 27500VA 33000VA 36300VA Maximum AC current 32A 40A 48A 53A Rated AC voltage 3F N PE 230 400V 20 Rated AC voltage range 180V 270V According to local grid...

Page 73: ...Communication Communication interface Wi Fi optional RS485 proprietary protocol microSD card Additional inputs I O inputs for connection to anti reverse power controller Data storage 25 years General...

Page 74: ...es normal operation of the inverter If the inverter is defective or faulty during the warranty period contact your installer or supplier If the fault falls within the responsibility of the manufacture...

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