Sofar solar HYD 5KTL-3PH User manual

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

HYD 5-20KTL-3PH User manual
Content
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......................................................- 15 -
3.7. Back-up Unbalanced Output........................................- 17 -
3.8. On-Grid Unbalanced Output........................................- 18 -
4. Installation.............................................................................. - 19 -
4.1. Installation Process...................................................... - 19 -
4.2. Checking Before Installation....................................... - 19 -
4.3. Product Overview........................................................ - 22 -
4.4. Tools.............................................................................- 22 -
4.5. Installation Environment..............................................- 23 -
4.6. Determining the Installation Position.......................... - 24 -
4.7. Moving the HYD 5-20KTL-3PH.................................- 25 -
4.8. Installing HYD 5-20KTL-3PH.................................... - 26 -
5. Electrical Connections............................................................ - 28 -
5.1. Wire instructions.......................................................... - 30 -
5.2. Connecting PGND Cables........................................... - 30 -
5.3. Battery Connection &PV Connection..........................- 32 -
5.4. AC Load connection.................................................... - 33 -

HYD 5-20KTL-3PH User manual
5.5. AC Grid connection..................................................... - 34 -
5.6. External communication interface............................... - 35 -
5.7. Communication method...............................................- 50 -
6. Buttons and indicator lights.................................................... - 52 -
6.1. Buttons......................................................................... - 52 -
6.2. Indicator lights and status............................................ - 52 -
7. Operation（commission）..................................................... - 53 -
7.1. Double Check.............................................................. - 53 -
7.2. First Time Setup (Starting up Or Shutdown)............... - 53 -
7.3. Setting power quality response modes.........................- 58 -
7.4. Menu............................................................................ - 59 -
8. Troubleshooting...................................................................... - 77 -
9. Technical Data.........................................................................- 85 -
10. Quality Assurance................................................................. - 92 -

HYD 5-20KTL-3PH User manual
Copyright © Shenzhen SOFARSOLAR 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.
Document Updates
V1.1 2022-6-17
●Initial versio7
Shenzhen SOFARSOLAR Co., Ltd
Location:11/F., Gaoxinqi Technology Building, No.67 Area, Xingdong Comm
unity, Xin’an Sub-district, Bao’an District, Shenzhen City,China
Postcode: 518000
Company Website: www.sofarsolar.com
Email: [e-mail]

HYD 5-20KTL-3PH User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd.
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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 10KTL-3PH-A
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 the
following symbols used in this manual carefully.

HYD 5-20KTL-3PH User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd.
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"Dangerous" means there is a high potential danger that, if
not avoided, could result in death or injury.
Danger
"Warning" indicates a moderate potential danger that, if not
avoided, could result in death or injury.
Warning
"Caution" indicates a mild potential hazard that, if not
avoided, could result in moderate or mild injury to persons.
Caution
"Attention" denotes potential risk, if not avoided, that may
result in equipment not operating properly or property
damage.
Attention
"Note" are additional information in the manual,
highlighting and complements the content, and may also
provide tips or tricks for optimizing the use of the product
that can help you solve a problem or save you time.
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
etc.), and ensure that inverter is vertical placed. Choose a place suitable for

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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.

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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 grid 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!
Keep it away from kids !
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

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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.

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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.

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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
AMASS-
Storage
Battery
Normal Load
WiFi/GPRS，
RS485,USB,CAN2.0
Grid
Critical Load
Power Generation Date
Monitoring Platform
PV panels
Smart Meter
Hydbrid Inverter

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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 10 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 97.8%.
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

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Fig. 2-3 Electrical block diagram

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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
AMASS-
Storage
Battery
Normal Load
WiFi/GPRS，
RS485,USB,CAN2.0
Grid
Critical Load
Power Generation Date
Monitoring Platform
PV panels
Smart Meter
Hydbrid Inverter

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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
AMASS-
Storage
Battery
Normal Load
WiFi/GPRS，
RS485,USB,CAN2.0
Grid
Critical Load
Power Generation Date
Monitoring Platform
Hydbrid Inverter
Smart
Meter
PV panels

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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
AMASS-
Storage
Battery
Normal Load
WiFi/GPRS，
RS485,USB,CAN2.0
Grid
Critical Load
Power Generation Date
Monitoring Platform
Hydbrid Inverter
Smart Meter
PV panels

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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)
AMASS-
Storage
Battery
Normal Load
WiFi/GPRS，
RS485,USB,CAN2.0
Grid
Critical Load
Power Generation Date
Monitoring Platform
PV panels
Hydbrid Inverter
Smart Meter

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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
AMASS-
Storage
Battery
Normal Load
WiFi/GPRS，
RS485,USB,CAN2.0
Grid
Critical Load
Power Generation Date
Monitoring Platform
AMASS-
Storage
Battery
Up to 10*Inverters Parallel
Connection
Hydbrid Inverter
Primary
Hydbrid Inverter
Replica
PV panels
PV panels
Smart Meter
Note(AC LOAD is also parallel for parallel machines):
1. It is recommended that the AC LOAD output wiring of all machines should be
combined together and connected to the LOAD by THE AC circuit breaker. It is not
recommended that each machine should be connected to the AC circuit breaker
separately to avoid the possibility that the power allocated to other machines will
exceed the maximum allowable LOAD power of a single AC circuit breaker due to
its disconnection.
2. It is recommended that AC GRID output wiring of all machines should be
combined together and connected to the power GRID through AC circuit breaker. It
is not recommended that each machine should be connected to AC circuit breaker

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separately to the power GRID, because when the AC circuit breaker connected to a
single machine is disconnected, the AC GRID end of this machine still has AC
power, so as to avoid electric shock caused by operator's wrong judgment.
3. The cable length of the AC LOAD terminal connected from the LOAD terminal
to each machine shall be consistent with the specification of the cable length, so as
to ensure that the loop impedance is consistent and the current of the LOAD current
diverted to each machine is nearly equal.
4. When the total power of AC Load is greater than 110% of the rated power of
the machine （For example, one 20KW machine AC LOAD has a maximum
allowable power of 22kVA and five parallel machines AC LOAD has a maximum
allowable power of 110kVA）, the Load should not be connected to AC Load and
should be connected to AC Grid.