Sofar solar HYD 5- 20KTL-3PH Series User manual

Shenzhen SOFARSOLAR Co., Ltd.
Energy storage integrated inverter
Product Model: HYD 5K~20KTL-3PH
User manual

HYD 5-20KTL-3PH User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd.
Content
Preface................................................................................................................................... II
1. Basic safety information................................................................................................- 1 -
1.1. Safety instructions........................................................................................... - 1 -
1.2. Symbols and signs........................................................................................... - 4 -
2. Product characteristics...................................................................................................- 6 -
2.1. Product informations....................................................................................... - 6 -
2.2. Size description................................................................................................- 7 -
2.3. Function characteristics................................................................................... - 7 -
2.4. Electrical block diagram.................................................................................. - 7 -
3. Application modes......................................................................................................... - 9 -
3.1. Typical Energy Storage System....................................................................... - 9 -
3.2. System Without PV Connection.................................................................... - 10 -
3.3. System Without Battery................................................................................. - 11 -
3.4. Back-up Mode (Without Grid).......................................................................- 12 -
3.5. System With Multi Inverters..........................................................................- 13 -
3.6. AC Retrofit System........................................................................................- 14 -
3.7. Back-up Unbalanced Output..........................................................................- 16 -
3.8. On-Grid Unbalanced Output..........................................................................- 17 -
4. Installation................................................................................................................... - 18 -
4.1. Installation Process........................................................................................ - 18 -
4.2. Checking Before Installation......................................................................... - 18 -
4.3. Product Overview.......................................................................................... - 21 -
4.4. Tools...............................................................................................................- 21 -
4.5. Installation Environment............................................................................... - 22 -
4.6. Determining the Installation Position............................................................ - 23 -
4.7. Moving the HYD 5-20KTL-3PH...................................................................- 24 -
4.8. Installing HYD 5-20KTL-3PH...................................................................... - 24 -
5. Electrical Connections.................................................................................................- 26 -
5.1. Wire instructions............................................................................................ - 27 -
5.2. Connecting PGND Cables............................................................................. - 28 -
5.3. Battery Connection & PV Connection...........................................................- 29 -
5.4. Load connection.............................................................................................- 30 -
5.5. Grid connection............................................................................................. - 31 -
5.6. External communication interface.................................................................- 32 -
5.7. Communication method.................................................................................- 42 -
6. Buttons and indicator lights.........................................................................................- 46 -
6.1. Buttons........................................................................................................... - 46 -
6.2. Indicator lights and status.............................................................................. - 46 -
7. Operation..................................................................................................................... - 47 -
7.1. Double Check................................................................................................ - 47 -
7.2. First Time Setup (IMPORTANT!).................................................................- 47 -
7.3. Menu.............................................................................................................. - 49 -
8. Troubleshooting...........................................................................................................- 66 -
9. Technical Data............................................................................................................. - 76 -
10. Quality Assurance......................................................................................................- 83 -

HYD 5-20KTL-3PH User manual
Copyright © Shenzhen SOFAR SOLAR Co., Ltd.
I
Notice
This manual contains important safety instructions that must be followed
during installation and maintenance of the equipment.
Save these instructions!
This manual must be considered as an integral part of the equipment. The
manual must always accompany the equipment,even when it is transferred to
another user or field.
Copyright Declaration
The copyright of this manual belongs to Shenzhen SOFARSOLAR
Co.,Ltd.Any corporation or individual should not plagiarize, partially copy or
fully copy it (including software, ect .),and no reproduction or distribution of it in
any form or by any means.All right reserved.
SOFARSOLAR reserves the right of final interpretation.This manual is
subject to change according to user’s or customer’s feedback.Please check our
website at http://www.sofarsolar.com for latest version.

HYD 5-20KTL-3PH User manual
Copyright © Shenzhen SOFAR SOLAR Co., Ltd.
II
Preface
If you have any question or problem when you read the
following information, please contact Shenzhen SOFARSOLAR
Co., Ltd.
Note
Outline
Please read the product manual carefully before installation,operation or
maintenance.This manual contains important safety instructions and installation
instructions that must be followed during installation and maintenance of the
equipment.
Scope
This product manual describes the installation,electrical connections,
commissioning,maintenance and troubleshooting of HYD 5-20KTL-3PH
inverters:
HYD 5KTL-3PH HYD 6KTL-3PH
HYD 8KTL-3PH HYD 10KTL-3PH
HYD 15KTL-3PH HYD 20KTL-3PH
Keep this manual where it will be accessible at all times.
Target Group
This manual is intended for qualified electrical technical personnel who are
responsible for inverter installation and commissioning in the PV power system
and PV plant operator.
Symbols Used
This manual is provides safety operation information and uses the symbol in
order to ensure personal and property security and property security and use
inverter efficiently when operating the inverter. You must understand these
emphasized information to avoid the personal injury and property loss.Please read

HYD 5-20KTL-3PH User manual
Copyright © Shenzhen SOFAR SOLAR Co., Ltd.
III
the following symbols used in this manual carefully.
Danger indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
Danger
Warning indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
Warning
Caution indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
Caution
Attention indicates potential risks which, if not
avoided, may lead to equipment fault or property damage.
Attention
Note provides tips that are valuable for the optimal
operation of the product.
Note

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1. Basic safety information
1.1. Safety instructions
Read and understand the instructions of this manual, and be familiar with
relevant safety symbols in this chapter, then start to install and troubleshoot the
equipment.
According to the national and state requirements, before connecting to the
electrical grid, you must get permission from the local electrical grid operation can
only be performed by qualified electrical engineer.
Please contact the nearest authorized service center if any maintenance or
repair is needed.Contact your distributor for the information of the nearest
authorized service center. Do NOT repair it by yourself, it may cause injury or
property damage.
Before installing and maintaining the equipment, you should turn the DC
switch OFF to cut off the high voltage DC of the PV array. You can also turn the
switch in the PV combiner box OFF to cut off the high voltage DC.When the
battery needs to be installed, please confirm the positive and negative terminals of
the battery and turn OFF the battery. Otherwise, serious injury may be caused.
Qualified persons
The customer must make sure the operator has the necessary skill and training
to do his/her job.Staff in charge of using and maintaining the equipment must be
skilled,aware and mature for the described tasks and must have the reliability to
correctly interpret what is described in the manual. For safety reason only a
qualified electrician, who has received training and / or has demonstrated skills and
knowledge in construction and in operation of this unit, can install this inverter.
Shenzhen SOFARSOLAR Co., Ltd. does not take any responsibility for the
property destruction and personal injury because of any incorrect use.
Installation requirements
Please install inverter according to the following section. Fix the inverter on
an appropriate objects with enough load bearing capacity (such as walls, PV racks

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etc.), and ensure that inverter is vertical placed. Choose a place suitable for
installing electrical devices. And assure there is enough fire exit space, convenient
for maintenance. Maintain proper ventilation to ensure enough air cycle to cool the
inverter.
Transport requirements
If you find packing problems that may cause the damage of the inverter, or
find any visible damage, please immediately notice the responsible transportation
company. You can ask solar equipment installation contractor or Shenzhen
SOFARSOLAR Co.Ltd. for help if necessary.
Transport of the equipment, especially by road, must be carried out with by
suitable ways and means for protecting the components (in particular, the electronic
components) from violent shocks, humidity, vibration, etc.
Labels on the equipment
Electric connection
Please comply with all the current electrical regulations about accident
prevention in dealing with the solar invert.
Before the electrical connection, make sure to use opaque
material to cover the PV modules or to disconnect PV array DC
switch. Exposure to the sun, PV array will produce a dangerous
voltage!
Danger
The labels must NOT be hidden with objects
and extraneous parts (rags, boxes, equipment,
etc.); they must be cleaned regularly and kept
visible at all times.

HYD 5-20KTL-3PH User manual
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All installation accomplished only by professional electrical
engineer!
Must be trained;
Completely read the manual operation and understand
relevant matter.
Warning
Get permission from the local electrical gird operator,
complete all electrical connections by professional electrical
engineer, then connect inverter to electrical grid.
Attention
It’s forbidden to remove the tamper evident label, or open the
inverter. Otherwise Sofarsolar will not provide warranty or
maintenance!
Note
Operation
Touching the electrical grid or the terminal of the equipment
may lead to electrocution or fire!
Don’t touch the terminal or conductor connected to the
electrical grid.
Pay attention to any instructions or safety documents related to
grid connection.
Danger
Some internal components will be very hot when inverter is
working. Please wear protective gloves!
Attention
Maintenance and repair
Before any repair work, turn OFF the AC circuit breaker
between the inverter and electrical grid first, then turn OFF the DC
switch.
After turning OFF the AC circuit breaker and DC switch, wait
for 5 minutes at least before carrying out any maintenance or repair
work.
Danger
Inverter should work again after removing any faults. If you
need any repair work, please contact with the local authorized
service center.
Can’t open the internal components of inverter without
authorized. Shenzhen SOFARSOLAR Co., Ltd. does not take any
responsibility for the losses from that.
Attention
EMC / noise level of inverter
Electromagnetic compatibility (EMC) refers to that one 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

HYD 5-20KTL-3PH User manual
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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 around the inverter in less than 20
cm when inverter is working.
Danger
1.2. Symbols and signs
Caution of burn injuries due to hot enclosure!
You can only touch the screen and pressing key of the inverter
while it’s working.
Caution
PV array should be grounded in accordance to the requirements
of the local electrical grid operator!
We suggest that all PV module frames and inverter are reliably
grounded to protect the PV system and personnel security.
Attention
Ensure input DC voltage < Max. DC voltage .Over voltage may
cause permanent damage to inverter or other losses, which will not
be included in warranty!
Warning
Signs on the inverter
There are some symbols which are related to security on the inverter. Please
read and understand the content of the symbols, and then start the installation.
This symbol indicates a hazardous situation which could result in
injuries, if not avoided.
There is a residual voltage in the inverter! Before opening the
equipment, operator should wait for five minutes to ensure the
capacitor is discharged completely.
Caution, risk of electric shock.
Caution hot surface.
Comply with the Conformite Europeenne (CE) certification.
Grounding point.
Please read this manual before install HYD 5-20KTL-3PH.

HYD 5-20KTL-3PH User manual
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This indicates the degree of protection of the equipment
according to IEC standard 70-1 (EN 60529 June 1997).
Positive pole and negative pole of the input voltage (DC).
This side up, HYD 5-20KTL-3PH inverter must always be
transported, handled and stored in such a way that the arrows
always point upwards.
RCM (Regulatory Compliance Mark)
The product complies with the requirements of the applicable
Australian standards.

HYD 5-20KTL-3PH User manual
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2. Product characteristics
2.1. Product informations
HYD 5-20KTL-3PH inverter is a three-phase photovoltaic energy storage
inverter integrating grid-connected photovoltaic inverter and battery energy storage.
The HYD 5-20KTL-3PH inverter has a variety of built-in operating modes to
suit the diverse user needs.
The HYD 5-20KTL-3PH inverter can provide a complete solution in the
period of rising energy costs such as oil and coal, the energy subsidy of
photovoltaic grid-connected system keeps falling. In the period of continuous
power supply and emergency power supply demand in mountainous areas or base
stations without power grid.
Fig. 2-1 HYD 5-20KTL-3PH inverter system diagram

HYD 5-20KTL-3PH User manual
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2.2. Size description
Fig. 2-2 Size chart
Front view
①
left view
②
Bracket
③
2.3. Function characteristics
The HYD 5-20KTL-3PH energy storage inverters allow up to 10%
overloading to maximize power output, and the Uninterruptible Power Supply
(UPS) mode can support inductive loads such as air conditioners or refrigerators
with an automatic switchover time of less than 20 milliseconds.
a. Dual MPP trackers with 1.5* DC overload.
b. Flexible switching between grid-tied mode and energy storage mode.
c. Max. battery charge and discharge efficiency 97.7%.
d. 2 strings of battery input with maximum 50A charge and discharge current.
e. Wide battery voltage range(180-800V).
f. Off-grid output can be connected to unbalanced load.
g. AC Multi-parallel function, more flexible system solution.
h. Smart monitoring, RS485/WiFi/Bluetooth/GPRS(Optional).
2.4. Electrical block diagram
Fig. 2-3 Electrical block diagram
The inverter output of HYD 5-20KTL-3PH series inverter has 4 sets of relays,
which are electrically connected to the output end R/S/T/N respectively to ensure
the continuity of the electrical connection of load R/S/T/N when the inverter is

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switched off the grid.

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3. Application modes
3.1. Typical Energy Storage System
A typical energy storage system ,when you first design the system, you have
already included PV, battery and calculated the load capacity that needs to be
sustained by the hybrid inverter. This is the whole system design.
Fig. 3-1 Typical Energy Storage System

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3.2. System Without PV Connection
1) There is no space to install the PV panel.
2) You don’t want to install PV.
3) You want to install the PV later time.
This is the system configuration, and battery will be charged by the grid.
Fig. 3-2 System Without PV Connection

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3.3. System Without Battery
1) You want just a grid-tied system.
2) You may add battery in the future.
This is the system configuration, battery function is always there, once you
need, add it.
Fig. 3-3 System Without Battery

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3.4. Back-up Mode (Without Grid)
1) The grid is down.
2) You don’t want to use grid in peak hour.
This is the system configuration. If the PV is available, power will come from
PV, or battery will sustain the critical load.
Fig. 3-4 Back-up Mode (Without Grid)

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3.5. System With Multi Inverters
1) The system capacity is higher than 20kW.
2) PV panel is needed and enough space to install it.
3) Battery is needed for emergency or peak hour.
A parallel connection system for both AC output and Load output is the choice,
maximum supports 10 units. So the system capacity will range from 5-200kW,
which makes it possible for a lot application scenarios.
Fig. 3-5 System With Multi Inverters

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3.6. AC Retrofit System
1) Grid-tied solar system has already existed.
2) More capacity of power is needed.
3) Battery is needed for emergency.
4) Extra space for PV panel.
This is the solution can satisfy all the needs.
Fig. 3-6 AC Retrofit System(1)

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1) Grid-tied solar system has already existed.
2) More capacity of power is needed.
3) Battery is needed for emergency.
4) No extra space for PV panel.
This is the solution can satisfy all the needs.
Fig. 3-7 AC Retrofit System(2)