ZCS 3PH 100KTL-HV User manual

Identification: MD-AL-GI-00 Rev. 1.0 of 24.02/2021 - Application: GID
Pile Reg. IT12110P00002965 - Share Capital € 100,000.00 fully paid up
AR Companies Reg. no. 03225010481 - REA AR - 94189
ISO 9001 Certified Company - Certificate no. 9151 - CNS0 - IT-17778
Zucchetti Centro Sistemi S.p.A. - Green Innovation Division
Via Lungarno, 248 - 52028 Terranuova Bracciolini - Arezzo, Italy
tel. [phone] - fax. [phone]
[e-mail] - [email protected] –www.zcsazzurro.com
Grid-connected inverter
3PH 100KTL-136KTL-HV
User Manual

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User’s Manual 3PH 100KTL-136KTL-HV
Rev. 1.0 24/02/2021
Identification: MD-AL-GI-00
Rev. 1.0 of 24/02/2021 - Application: GID
Table of Contents
1. Preliminary safety instructions ..............................................................................................................................................................6
1.1. Safety instructions ....................................................................................................................................................................6
1.2. Symbols and icons.....................................................................................................................................................................9
2. Product features.........................................................................................................................................................................................11
2.1. Product presentation............................................................................................................................................................11
2.2. Description of functions ......................................................................................................................................................13
2.3. Module protection..................................................................................................................................................................15
2.4. Efficiency and derating curves..........................................................................................................................................16
3. Installation....................................................................................................................................................................................................17
3.1. Installation process ...............................................................................................................................................................18
3.2. Checks before installation...................................................................................................................................................18
3.3. Installation tools.....................................................................................................................................................................20
3.4. Installation position ..............................................................................................................................................................22
3.5. Moving the 3PH 100KTL-136KTL-HV inverter .........................................................................................................25
3.6. Installing the 3PH 100KTL-136KTL-HV inverter .....................................................................................................27
4. Electrical connections..............................................................................................................................................................................32
4.1. Electrical connections ..........................................................................................................................................................33
4.2. Terminal connector ...............................................................................................................................................................33
4.3. Connecting PNGD cables (grounding)...........................................................................................................................34
4.4. Connecting the AC output power cables.......................................................................................................................36
4.5. Connecting the DC input power cables.........................................................................................................................41
4.6. Connecting the communication cables .........................................................................................................................44
5. Commissioning the inverter..................................................................................................................................................................47
5.1. Safety inspection before commissioning......................................................................................................................47
5.2. Starting the inverter..............................................................................................................................................................47
6. Operating interface ...................................................................................................................................................................................49
6.1. Operating panel and display..............................................................................................................................................49
6.2. Main interface..........................................................................................................................................................................50
6.3. Main menu.................................................................................................................................................................................53
6.4. Updating Inverter Software ...............................................................................................................................................56

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7. Troubleshooting and maintenance ....................................................................................................................................................58
7.1. Troubleshooting......................................................................................................................................................................58
7.2. Maintenance .............................................................................................................................................................................64
8. Uninstalling ..................................................................................................................................................................................................65
8.1. Uninstallation steps...............................................................................................................................................................65
8.2. Packaging...................................................................................................................................................................................65
8.3. Storage ........................................................................................................................................................................................65
8.4. Disposal ......................................................................................................................................................................................65
9. Technical data..............................................................................................................................................................................................66
10. Warranty terms and conditions.................................................................................................................................................67

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User’s Manual 3PH 100KTL-136KTL-HV
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General instructions
This manual contains important safety instructions that must be followed during installation and
maintenance of the equipment.
Please keep these instructions!
This manual must be considered an integral part of the equipment, and must be available at all times to
everyone who interacts with the equipment. The manual must always accompany the equipment, even when
it is transferred to another user or plant.
Copyright statement
Copyright of this manual belongs to Zucchetti Centro Sistemi S.p.A. No part of this manual (including the
software, etc.) may be copied, reproduced or distributed in any form or by any means without the
permission of Zucchetti Centro Sistemi S.p.A. All rights reserved. ZCS reserves the right to final
interpretation. This manual is subject to change based on feedback from users, installers or customers.
Please check our website http://www.zcsazzurro.com for the latest version.
Technical support
ZCS offers a support and technical consultancy service accessible by sending a request directly from the
website https://www.zcsazzurro.com/it/support.
For the Italian territory, the following toll-free number is available: 800 72 74 64.

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User’s Manual 3PH 100KTL-136KTL-HV
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Preface
General information
Please read this manual carefully before installation, use or maintenance.
This manual contains important safety instructions that must be followed during installation and
maintenance of the system.
Scope
This manual describes the assembly, installation, electrical connections, commissioning, maintenance and
troubleshooting of the following inverters:
3PH 100KTL-HV / 3PH 125KTL-HV / 3PH 136KTL-HV
Keep this manual so that it is accessible at all times.
Recipients
This manual is intended for qualified technical personnel (installers, technicians, electricians, technical
support personnel or anyone who is qualified and certified to operate a photovoltaic system), who are
responsible for installing and starting the inverter in the photovoltaic system and for operators of the
photovoltaic system.
Symbols used
This manual provides information for safe operation and uses certain symbols to ensure the safety of
personnel and materials, and for efficient use of the equipment during normal operation.
It is important to understand this information to avoid accidents and damage to property. Please take note
of the following symbols used in this manual.
Danger: indicates a hazardous situation which, if not resolved or avoided,
could result in serious personal injury or death.
Danger
Warning: indicates a hazardous situation which, if not resolved or avoided,
could result in serious personal injury or death.
Warning
Caution: indicates a hazardous situation which, if not resolved or avoided,
could result in minor or moderate personal injury.
Caution
Attention: indicates a potentially hazardous situation which, if not resolved or
avoided, could result in damage to the system or other property.
Attention
Note: provides important tips on the correct and optimal operation of the
product.

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1. Preliminary safety instructions
If you have problems or questions regarding the reading and
understanding of the following information, please contact Zucchetti
Centro Sistemi S.p.A. through the appropriate channels.
Note
General information in this chapter
Safety instructions
It mainly highlights the safety instructions to be followed during installation and use of the equipment.
Symbols and icons
Introduces the main safety symbols on the inverter.
1.1. Safety instructions
Before installing and using the equipment, make sure you read and understand the instructions in this
manual and familiarise yourself with the relative safety symbols shown in this chapter.
Depending on national and local requirements, permission must be obtained from your local provider before
connecting to the electrical grid, making sure that the connections are carried out by a qualified electrician.
Contact the nearest authorised service centre for any repairs or maintenance. Contact your distributor for
information on the nearest authorised service centre. DO NOT carry out repairs yourself, as this may result
in injury 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 photovoltaic system. Failure to do
so could result in serious injury.
Qualified personnel
Ensure that the operator has the necessary skills and training to operate the equipment. Personnel
responsible for use and maintenance of the equipment must be qualified and capable of performing the
activities described, and must also have appropriate knowledge on how to correctly interpret the contents
of this manual. For safety reasons, this inverter can only be installed by a qualified electrician with the
necessary training and/or skills and knowledge. Zucchetti Centro Sistemi S.p.A. declines all responsibility for
damage to property or personal injury caused by incorrect use of the device.
Installation requirements
Install and start the inverter according to the following instructions. Place the inverter on suitable load-
bearing supports with sufficient load capacity (such as walls or photovoltaic racks) and make sure that the
inverter is positioned vertically. Choose a suitable location for the installation of the electrical equipment.
Make sure there is sufficient space for heat dispersion and to accommodate future maintenance. Maintain
adequate ventilation and ensure that there is enough air circulation for cooling.

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Figure 1 –Do not lose or damage this manual
Transport requirements
If you encounter problems with the packaging, or if you find any visible damage, please notify the transport
company immediately. If necessary, request assistance from an installer of photovoltaic systems or from
Zucchetti Centro Sistemi S.p.A. Transport of the equipment, especially by road, must be carried out with
vehicles suitable to protect the components (in particular, electronic components) against violent knocks,
humidity, vibrations, etc.
Electrical connections
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
modules by disconnecting all the DC switches of the generator. When exposed
to the sun, the photovoltaic panels produce a voltage that can be dangerous!
Danger
All installation operations must be carried out by a professional electrician,
who must:
Be prepared.
Carefully read this manual and understand its contents.
Warning
Before connecting the inverter to the grid, make sure that all the necessary
permits have been obtained from the local grid operator and that all the
electrical connections are made by a professional electrician.
Attention
Do not remove the information label or open the inverter.
Otherwise, ZCS will not provide any warranty or maintenance.
Note

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Operation
Contact with the electrical grid or the terminal of the equipment may cause
electrocution or fire!
Do not touch the terminal or the conductor connected to the electrical grid.
Follow all the instructions and safety requirements relating to the mains
connection.
Danger
Some internal components reach very high temperatures when the inverter
is 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).
After switching off the AC and DC switches, wait 5 minutes before carrying
out any repairs or maintenance on the inverter!
Danger
The inverter should start working again after any faults have been fixed. For
any repairs, contact your local authorised service centre;
Do not disassemble the internal components of the inverter without
permission. This will void the warranty. Zucchetti Centro Sistemi S.p.A. shall
not be responsible for any damage or loss caused by these actions.
Attention
EMC/Noise Level
Electromagnetic compatibility (EMC) refers to that on electrical equipment functions in a given
electromagnetic environment without any trouble or error, and impose no unacceptable effect upon the
environment. Therefore, EMC represents the quality characters of an electrical equipment.
The inherent noise-immune character: immunity to internal electrical noise
External noise immunity: immunity to electromagnetic noise of external system
Noise emission level: influence of electromagnetic emission upon environment
Electromagnetic radiation from inverter may be harmful to health!
Please do not continue to stay away from the inverter in less than 20cm
when inverter is working
Danger

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1.2. Symbols and icons
Safety signals
High voltage of inverter may be harmful to health! Only qualified personnel
can operate the product.
Keep this product out of the reach of children.
Danger
Pay attention to possible burns due to hot parts.
Only touch the screen or press the keys while the inverter is in operation.
Caution
The PV strings should be connected to the ground in accordance with the
local regulations!
To ensure the safety of the system and people, the inverter and
photovoltaic strings 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 other faults which are not covered by the warranty!
Warning
Symbols on the inverter
Some safety symbols are located on the inverter. Read and understand the contents of the symbols before
installing the inverter.
Residual voltage may be present on the inverter! Before opening the inverter,
wait 5 minutes to ensure that the capacitors are completely discharged.
Beware of high voltage
Beware of high temperatures
Complies with the European Standards (CE)
’Smin"“’"
There is residual voltage in the inverter! Before opening the equipment,
wait five minutes to ensure that the capacitance has been completely
discharged.
Be careful of high voltage.
Be careful of high temperature.
Complies with European standards.
Ground connection point.
This indicates the allowed temperature range.
This indicates the degree of protection of the equipment according to

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Ground connection point
Read this manual before installing the inverter.
Indication of the allowable temperature range
Positive and negative polarities of the input voltage (DC).
RCM (Regulatory Compliance Mark).
The product complies with the requirements of the applicable Australian
standards.

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2. Product features
General information in this chapter
Product overview
The field of use and overall dimensions of the 3PH 100KTL-136KTL-HV inverters are indicated in this
section.
Description of functions
It describes how the 3PH 100KTL-136KTL-HV inverters and their internal operating modules work.
Efficiency curve
Describes the efficiency curves of the inverter.
2.1. Product presentation
Field of use
The 3PH 100KTL-136KTL-HV inverters are grid-connected photovoltaic inverters equipped with 10-12
MPPT, capable of converting the direct current generated by the photovoltaic strings into three-phase sine
wave alternating current and feeding the energy to the public electricity grid. An AC circuit breaker must be
used as a disconnecting device and must always be easily accessible.
Figure 2 –Grid-connected photovoltaic system
The 3PH 100KTL-136KTL-HV inverters can only be used with photovoltaic modules that do not require one
of the polarities to be grounded. The operating current and voltage during normal operation must not
exceed the limits indicated in the technical specifications. Only photovoltaic modules can be connected to
the input of the inverter (do not connect batteries or other power supply sources).

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Dimensions description
• Overall dimensions: H x W x D = 693.5 mm x 995.5 mm x 368 mm
Figure 3 –Front, side and back view of the inverter and bracket
•Labels on the inverter

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Figure 4 –Do not remove the label on the side of the inverter
2.2. Description of functions
The DC voltage generated by the PV modules is filtered through the input board before entering the power
board. The input board also has the function of detecting the insulation impedance and the DC input
voltage/current. The power board converts the DC power into AC power. The current converted into AC is
filtered through the output board and is then fed into the grid. The output board also has the function of
measuring the grid and GFCI voltage/current and acts as an output insulation relay. The control board
provides the auxiliary power supply, controls the operating status of the inverter and shows it on the
display. The display also shows the error codes when the inverter is not functioning properly. At the same
time, the control board can activate the protection relay in order to protect the internal components.

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Electrical block diagram
AZZURRO 3PH 100KTL-136KTL-HV has 16-24 DC input strings. 10-12 MPPT trackers that converters the
direct current of PV array to grid-compliant, three phase current and feeds in into the utility grid. Both DC
and AC side has Surge Protection Device (SPD).
Figure 5 –Block diagram of the 3PH 100KTL-136KTL-HV inverters

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Inverter functions
A. Energy management unit
Remote control to start/ shunt down inverter through an external control.
B. Feeding reactive power into the grid
The inverter is able to produce reactive power thus to feed it into the grid through the setting of the phase
shift factor. Feed-in management can be controlled directly by the grid company through a RS485 interface.
C. Limited the active power fed into the grid
If enable the limited of active power function, inverter can limit the amount of active power fed into the grid
to the desired value (expressed as percentage).
D. Self-power reduction when grid is over frequency
When the grid frequency exceeds the limit set, the inverter reduces the power in order to ensure the
stability of the grid.
E. Data transmission
The inverter (or a group of inverters) can be monitored remotely via an advanced communication system
based on RS485 interface and external data loggers or via Wi-Fi.
F. Software update
USB interface for uploading the firmware, remotely uploading is available.
2.3. Module protection
A. Anti-islanding
The inverter is equipped with a protection system that automatically shuts down the system during power
outages. This is called an “anti-islanding” system. This protects electrical workers when they are trying to
repair lines on the grid, in compliance with the applicable national laws and regulations.
B. RCMU
The inverters are equipped with a redundancy on the reading of the ground leakage current, on both the
direct and alternating current sides. The ground leakage current is measured simultaneously and
independently by two different processors: it is sufficient for one of the two to detect a fault in order to
trigger 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 within the
operating limits.
D. Internal protection of the inverter device
The inverter has all kinds of internal protections to protect the device and internal components when
abnormal situations occur on the grid or DC input line.
E. Ground fault protection
The inverter must be used with photovoltaic modules connected with “floating” connections, i.e. with
positive and negative terminals that are not grounded. An advanced ground fault protection circuit

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continuously monitors the ground connection and disconnects the inverter when a ground fault is detected.
The ground fault condition is indicated by a red LED on the front panel.
2.4. Efficiency and derating curves
Efficiency curve for an ZCS Azzurro model belonging to the 3PH 100KTL-136KTL-HV family
Figure 6 –Efficiency curve for an ZCS Azzurro 3PH 100KTL-136KTL-HV inverter
90%
91%
92%
93%
94%
95%
96%
97%
98%
99%
100%
Efficiency[%]
% Of Rated Output Power
125KTL-HV Efficiency curve
600V
750V
850V
90%
91%
92%
93%
94%
95%
96%
97%
98%
99%
100%
Efficiency[%]
% Of Rated Output Power
136KTL-HV Efficiency curve
600V
750V
850V

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3. Installation
General information in this chapter
This chapter describes how to install the 3PH 100KTL-136KTL-HV inverter.
Installation notes:
DO NOT install 3PH 100KTL-136KTL-HV inverters near flammable materials.
DO NOT install 3PH 100KTL-136KTL-HV inverters in an area where flammable
or explosive materials are stored.
Danger
The housing and heat sink may become very hot while the inverter is running,
DO NOT install the inverter in places where they may be touched inadvertently.
Warning
Consider the weight of the inverter when handling and transporting the inverter.
Choose an appropriate mounting position and surface.
Assign at least two people to install the inverter.
Attention
A. Installation process
This section describes the process for installing the 3PH 100KTL-136KTL-HV inverter
B. Checks before installation
This section describes the checks to carry out on the outer packaging, on the inverter and its components.
C. Installation tools
This section describes the tools needed to install the inverter and to make the electrical connections.
D. Installation position
This section describes the characteristics of the installation site of the inverter.
E. Moving the inverter
This section describes how to move the inverter to the installation site.
F. Installing the inverter
This section describes the steps for mounting the inverter on the wall.

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3.1. Installation process
Figure 7 - Installation steps
3.2. Checks before installation
Checking the outer packaging
Packaging materials and components may be damaged during transport. Therefore, please check the
materials of the outer packaging before installing the inverter. Check the surface of the box for external
damage such as holes or tears. If any kind of damage is found, do not open the box containing the inverter
and contact the supplier and transport company as soon as possible.
It is recommended to remove the packaged materials 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 components are missing, contact the supplier and transport company.
Contents of the packaging
Carefully check the contents of the packaging before installation, making sure that no element inside the
packaging is missing or damaged.
The package should contain the following components:
No.
Pictures
Description
Quantity
1
AZZURRO 3PH 100-136KTL-HV
1 PCS
2
Rear Panel
1 PCS
3
PV+ input connector
100KTL 20PCS
125KTL 20PCS
136KTL 24PCS

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4
PV- input connector
100KTL 20PCS
125KTL 20PCS
136KTL 24PCS
5
PV+ metal pin
100KTL 20PCS
125KTL 20PCS
136KTL 24PCS
6
PV- metal pin
100KTL 20PCS
125KTL 20PCS
136KTL 24PCS
7
M10*90Hexagon screws
4 PCS
8
Auxiliary Handle
4 PCS
9
M6*30 Hexagon screws
2 PCS
10
Manual
1PCS
11
Warranty Card
1PCS
12
Quality Certificate
1PCS

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COM 16pin connector
1PCS
3.3. Installation tools
The following tools are required for installation of the inverter and electrical connections; therefore, they
must be prepared before installation.
No.
Tool
Function
1
Drill
Recommended drill bit: 10mm
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 the cables for wiring
5
Adjustable spanner (opening
greater than 32 mm)
To tighten the bolts
6
4 mm Allen key
6 mm Allen key
To screw the inverter to the wall-
mounting bracket and to open
the front cover of the inverter
7
M5 socket wrench
To tighten the bolts
8
RJ45 crimping tool
To crimp the RJ45 connectors for
the communication cables
9
Rubber hammer
To insert the expansion plugs
into the wall holes