Hopewind hopeSunHV Series User manual

hopeSunHV Series
String Inverter
(225KTL, 250KTL)
User Manual
Version: V1.0
Thank you for purchasing products developed and manufactured by Shenzhen Hopewind
Technology Co., Ltd. (hereinafter referred to as “Hopewind”). Hope our products and this manual
can meet your demands.Any suggestion for improvement shall be appreciated.
Shenzhen Hopewind Technology Co., Ltd. reserves the copyright of this manual, and it shall be
subject to change without any further notice.

About this manual
For Readers
This manual is helpful for technicians who install, debug, operate and maintain string inverters of
Hopewind. Please read this manual carefully before operates the product.
Readers are required to know the basic knowledge about electric components, wiring, signs and
mechanical drawings.
Outlines
Chapter
Contents
1 Safety Precautions
This chapter describes the safety precautions when transporting, storing, installing,
running and maintaining the Inverter.
2 Product Description
This chapter describes the basic principles, naming rules, product configuration and
data.
3 System Installation
This chapter describes the unpacking inspection, installation tools, installation
environment, reserved space, fixing method, cable connection.
4 Commissioning
Guide
This chapter describes the inspection before startup, Commissioning and startup of
string inverter.
5 Maintenance and
Troubleshooting
This chapter describes the daily maintenance methods, maintenance intervals and
troubleshooting of the product.
6 Inverter handling
Guide
This chapter describes the basic requirements and precautions when disassembling,
replacing, and scrapping the inverter.
Warning Signs in This Manual
DANGER
It shows that there is a significant potential danger. If the operation is not performed
according to requirements, serious injury or damage may be caused to people or
equipment.
WARNING
It shows that there is a general potential danger. If the operation is not performed
according to requirements, general injury or damage may be caused to people or
equipment.
CAUTION
It shows that there is a general potential danger. If the operation is not performed
according to requirements, general injury or damage may be caused to equipment.
Terms and Abbreviations
Terms/Abbreviations
Description
MPPT
Maximum Power Point Tracking
Photovoltaic string
Multiple solar cell arrays in parallel or series.
EEPROM
Electrically Erasable Programmable Read-Only Memory
hopeInsight
A monitoring and debugging software for inverter.
Version Description
Version
Release Date
Description
V1.0
2020-5-22
The first version

Content
About this manual·················································································· 5
Content·································································································7
1 Safety Precautions··············································································· 1
1.1 Transportation·······················································································1
1.2 Storage ·······························································································1
1.3 Installation····························································································2
1.4 Operation·····························································································2
1.5 Maintenance·························································································3
2 Product Description············································································· 5
2.1 Product Description················································································5
2.1.1 Schematic Diagram··············································································5
2.1.2 Operation Mode···················································································5
2.2 System Configuration and Application·························································6
2.2.1 Application Description··········································································6
2.2.2 Supported Grid Form············································································ 7
2.3 Naming Rules·······················································································7
2.4 Nameplate label ····················································································8
2.5 Machine Configuration············································································9
2.6 Signs and labels·················································································· 11
2.7 Warning Labels in Inverter ····································································· 11
2.8 Technical Data ····················································································12
2.9 Mechanical Parameters·········································································13
2.10 Environment Requirements ··································································13
3 System installation ·············································································15
3.1 Unpacking and inspection······································································15
3.2 Preparation of installation tools ·······························································15
3.3 Installation environment requirements ······················································15
3.4 Requirements for reserved space····························································16
3.5 Fixing method·····················································································17
3.5.1 Pole-mounted (hoop) installation··························································· 17
3.5.2 Pole-mounted (screw) installation·························································· 18
3.5.3 Wall-mounted installation····································································· 19
3.6 Electrical connection·············································································20
3.6.1 Cable requirements············································································ 20
3.6.2 Recommended cable specifications······················································· 20
3.6.3 Torque requirements··········································································· 21
3.6.4 Preparation before operation································································ 21
3.6.5 Connect the PE cable ········································································· 22
3.6.6 Connect the AC output cable································································ 22
3.6.7 Connect the communication cable························································· 23
3.6.8 Connecting DC input cables·································································23
4 Commissioning Guide·········································································25
4.1 Check before starting············································································25
4.2 Power on the system············································································26
4.3 Power off the system············································································26
5 Maintenance and troubleshooting ························································27
5.1 Maintenance items and cycle··································································27
5.2 Troubleshooting···················································································28
6 Inverter handling instructions······························································33
6.1 Disassembly of the inverter····································································33
6.2 Replacing the inverter···········································································33
6.3 Packaging the inverter ··········································································33

6.4 Scrapped the inverter ···········································································33

1
1 Safety Precautions
This chapter describes the safety precautions to be observed during the installation, operation
and maintenance of inverter. Please carefully read the safety precautions before the installation,
maintenance and other operations of inverter.All personals must strictly observe safety
precautions during the operation. Personal injury or damage to inverter and associate devices
may occur if the safety precautions are ignored.
When operating the inverter, please pay particular attention to the following items:
DANGER
1. Only qualified professionals can install, operate and maintain the inverter.
2. Please avoid toppling and knocking the inverter cabinet during moving the inverter.
3. Prevent liquid, debris or chippings from getting inside the inverter; a conductive fluid and debris may cause
an internal short circuit of inverter and result in equipment damage.
4. Before completing installation and maintenance, the inverter must be isolated from power grid and other
electrified devices.
5. Please make sure that relevant protective measures have been taken to avoid electric shock, fire or other
accidents.
WARNING
Don't place explosive and inflammable substances around the inverter.
1.1 Transportation
WARNING
1. Please keep the inverter well packed and upward, avoid strong shock or collision during the transportation.
2. Please transport the inverter with package and operate in accordance with the signs and labels during the
transportation. Please refer to "2.6 Signs and labels" for detailed information.
3. Please ensure the transportation environment can meet the requirements. Please refer to "2.10
Environment Requirements" for detailed information.
1.2 Storage
WARNING
The storage environment of inverter should meet the corresponding requirements. Please refer to "2.10
Environment Requirements" for detailed information.
About long-term storage:
Before or after the installation, it's regarded as long-term storage if the inverter has been in the no power
supply status for over three weeks. Please pay attention to the following issues about long-term storage:
Put the desiccant into several equipment cabinets and pack the inverter with packaging materials;
Attention must be paid to ventilation and moisture prevention where equipment is stored and any water is
strictly prohibited;
Don't place explosive and inflammable substances within two meters from the device.
Necessary measures must be taken to deal with adverse environments, such as abrupt cooling and
heating, collision and dust storm to prevent damages to the inverter.
Regular inspection at least once a week, inspect whether the package is intact and prevent it from

User Manual of String Inverter
2
damages caused by insects and rats. Please replace the damaged package immediately.
The inverter shall be unpacked, inspected, repacked, and replace the new desiccant if it is stored for over
half a year.
Don't store the inverter without package.
1.3 Installation
DANGER
1. The DC switch and breaker of the inverter must be cut off and the inverter shell must be reliably grounded
before any operation is conducted inside the inverter.
2. The inverter must be grounded canonically and the dimension of grounding conductor must conform to the
requirements of security specifications to ensure the personal safety.
3. Don't place explosive and inflammable substances around the inverter.
WARNING
1. The installation environment of the inverter must have good ventilation and heat dissipation, the inverter
can’t expose to the sunlight directly.
2. It's advised to fix the inverter by four personals to avoid mechanical injury. Please take safety measures to
prevent injury during installation.
3. Liquid, dust or debris must be prevented from entering the inverter during installation and maintenance as
conducting liquid and debris may cause short circuit inside the inverter, thus damaging the equipment.
4. Please ensure the installing torque of power cable is proper during the wiring of external cables and
inverter, excessive torque will damage the screw, and too small torque will increase the contact resistance
and result in overheating.
5. The terminal of the power cable connected with the inverter must comply with national standard as
substandard terminal or disqualified construction may lead to overheating of the power cable and outbreak
of fire in severe cases.
6. Installation place must meet the operation environment requirements. Please refer to "2.10 Environment
Requirements" for detailed information.
1.4 Operation
DANGER
1. During the operation of inverter, the cabinet door of inverter needs to be locked to avoid electric shock and
other personnel injuries, which can also prevent salinity, water, dust or other conducting materials in the air
from entering into inverter.
2. Please keep the surrounding environment of operating inverter non-corrosive.
3. Don't place explosive and inflammable substances within two meters from the inverter.
4. Don't touch the internal board, components, cables and terminal blocks of inverter during the powering on.
5. When there are faults or abnormal smell or sound, turn off the DC switch and open the breaker of AC side
immediately.
WARNING
1. Power on the inverter only after completing the installation and properly connecting the cables.
2. Do not conduct any insulation resistance test or high-voltage resistance test for inverter, because wrong
test may cause damages to inverter.
3. Cut off wiring between inverter and external equipment when conducting insulation and voltage resistance
test for external equipment.

1 Safety Precautions
3
1.5 Maintenance
c
1. Please cut off theAC side breaker first, then cut off the DC switch, and wait for at least 5 minutes before
performing maintenance.
2. Please prevent irrelevant personals from entering maintenance scene during the maintenance.
3. Please maintain the inverter under the condition of understanding this manual and being equipped with
proper tools and test devices.
4. Please wear insulating gloves and safety shoes for you safety.
WARNING
Regular check and maintenance must be performed, please refer to "5 Maintenance and troubleshooting" for
details.
--Chapter End--

5
2 Product Description
2.1 Product Description
hopeSunHV series three-phase string on-grid inverter is independent developed by Hopewind.
it's main function is converting DC current generated by PV arrays intoAC current and feeding it
into the grid.
hopeSunHV 225KTL and hopeSunHV 250KTL are 24 PV arrays string inverter. These
products only suit for 1500V system and 800VAC on-grid LPVGS (Large Photovoltaic Grid
System).
2.1.1 Schematic Diagram
For hopeSunHV 225KTL/hopeSunHV 250KTL, the inverter is connected to 24 PV arrays as
input. 12 MPPT channels in the inverter track the PV arrays and convert the DC current into
three-phase AC current.
hopeSunHV 225KTL/hopeSunHV 250KTL schematic diagram is shown in Figure 2-1.
DC
EMC
Filter
1+
1- MPPT1
AC Filter
L1
L2
L3
PE
Protective Circuit
AC
EMC
Filter
Relay
Grid
DC Switch 1
2+
2-
3+
3-
4+
4-
5+
5-
6+
6-
7+
7-
8+
8-
9+
9-
10+
10-
11+
11-
12+
12-
DC Switch 2
13+
13-
14+
14-
15+
15-
16+
16-
17+
17-
18+
18-
DC Switch 3
DC Switch 4
19+
19-
20+
20-
21+
21-
22+
22-
23+
23-
24+
24-
MPPT2
MPPT3
MPPT4
MPPT5
MPPT6
MPPT7
MPPT8
MPPT9
MPPT10
MPPT11
MPPT12
DC
Lightning
Protection
Circuit
DC
Lightning
Protection
Circuit
DC
Lightning
Protection
Circuit
DC
Lightning
Protection
Circuit
IGBT
Three-level
Inverter
Circuit
Figure 2-1 hopeSunHV 225KTL/hopeSunHV 250KTL schematic diagram
2.1.2 Operation Mode
hopeSunHV string inverter includes three operation modes: standby mode, operation mode
and shutdown mode. The three mode switching conditions are shown in Figure 2-2.
Standby
Mode
Operation
Mode Shutdown Mode
Operation mode to standby mode:
Insufficient sunshine or DC switch
is turned off
Standby mode to operation mode:
Abundant sunshine without
system faults
Fault or shutdown command is detected
Standby mode to
shutdown mode: fault or
shutdown command is
detected
Shutdown mode to standby
mode: fault is deleted or
startup command is detected
Figure 2-2 hopeSunHV string inverter operation mode

User Manual of String Inverter
6
Operation Mode
Description
Standby
1) Standby mode mainly refers to the external environment doesn't meet the operation
condition, such as insufficient sunshine or DC switch is turned off. Under this mode, the
inverter continuously performs self-checking and enters operation mode once the
operation conditions are satisfied.
2) Under standby mode, the inverter will enter shutdown mode after detecting the
shutdown command or faults.
Operation
1) Under the operation mode, the inverter converts DC current of photovoltaic arrays into
AC current and feeds it to the grid. The inverter performs MPPT arithmetic and outputs
the maximum power of photovoltaic arrays.
2) The inverter will enter shutdown mode after detecting the faults or shutdown
command.
3) The inverter will enter standby mode after detecting the input power of photovoltaic
arrays is lower than the on-grid power generation condition.
Shutdown
1) If the inverter detects a fault occurrence or shutdown command during standby or
operation mode, it enters shutdown mode.
2) In the shutdown mode, if the inverter detects that the fault has been cleared or the
power-on command, it enters standby mode.
2.2 System Configuration and Application
2.2.1 Application Description
Figure 2-3 shows the application diagram of the string inverter network, Figure 2-4 shows the
design scheme of the large-scale ground PV power plant, Figure 2-5 shows the design scheme of
the distributed PV power plant.
Photovoltaic
panel String inverter AC power distribution
unit
Isolation
transformer Grid
Figure 2-3Application diagram of the string inverter network
Core exhanger
Optical fiber
ring network
Intelligent
data collector
String inverter
PV arrays
String inverter
PV arrays
Box-type
transformer Box-type
transformer
Intelligent
data collector
AC combiner
box AC combiner
box AC combiner box AC combiner box
Power grid
AC cable
DC cable
Com cable
Figure 2-4 Design scheme of the large-scale ground PV power plant

2 Product Description
7
String inverter
PV arrays
Box-type
transformer
Power grid
User load
WiFi/GPRS
wireless module
Mobile
Internet
Internet
Internet
hopeCloud
hopeView
Client
Central monitoring center
Figure 2-5 Design scheme of the l distributed PV power plant
2.2.2 Supported Grid Form
hopeSunHV 225KTL and hopeSunHV 250KTL support the IT system in Figure 2-6.
String inverter
IT
PE
L1
L2
L3
Figure 2-6 Schematic diagram of IT system
2.3 Naming Rules
hopeSun HV 225K TL
Rated output power:
225K--225kW 250K--250kW…
String inverter series
Output side without
isolation transformer
Maximum input voltage: 1500 VDC
Figure 2-7 Naming rules

User Manual of String Inverter
8
2.4 Nameplate label
(Note: The data is for reference only; please refer to the physical or technical agreement of the
corresponding product for actual parameters)

2 Product Description
9
2.5 Machine Configuration
This section describes the internal components, back device, and bottom interface of the
string inverter.
CAUTION
There are components on the board that are sensitive to static electricity. Anti-static measures must be
taken before touching the board.
When touching the board, please be careful to avoid scratching the electrical components.
2
1
No.
Label
Component Name
1
Door panel
2
LED indicator
Figure 2-8 Front view of the inverter
The LED indicators from left to right are described as follows:
Table 2-1 LED Indicator Description
Indicator light
Meaning
Status
Meaning
PV and grid
connection
Blue indicator
lights up
At least 1 PV array is normally connected. DC
voltage is more than 200V and grid is connected
normally.
Blue indicator
flashes
The grid is connected normally (PV array is not
connected).
Blue indicator
flashes slowly
At least 1 PV array is normally connected. DC
voltage is more than 200V (grid is not connected).
Blue indicator
lights off
All PV arrays and the inverter and grid are powered
off or their voltage is too low.
On-grid
operation
Blue indicator
lights up
The inverter is in the on-grid status.
Blue indicator
lights off
The inverter isn't connected to the grid.
Communication
indication
Blue indicator
flashes
Normal communication.
Blue indicator
lights off
Abnormal communication.
Alarm
indication
Red indicator
flashes slowly
PID is operating.
Red indicator
flashes
Abnormal alarm: regular alarm.
Red indicator
lights up
Critical alarm: faults.
Remarks:
Slow flash is defined as: 1 second lights up, 2 seconds lights off.
Flash is defined as: 0.5 seconds lights up, 0.5 seconds lights off.

User Manual of String Inverter
10
1
2
3
No.
Label
Component Name
1
Handle
2
Installation parts
3
Inductor
Figure 2-9 Back view of the inverter
412
3
5
111
44 4
No.
Label
Component Name
1
1+ ~ 24+
1- ~ 24-
PV terminals
2
AC OUTPUT
AC terminal
3
PE
Protective earthing
4
DC SWITCH
DC switch
5
WiFi/GPRS communication interface
Figure 2-10 Bottom view of the inverter (Interface description)

2 Product Description
11
2.6 Signs and labels
On the outer packaging of the product, there are some labels to guide the user to transport
and store the product. The meanings indicated by the labels are as follows:
Do not stack or
backlog
Handle with care and
avoid damage caused by
severe collision or friction
during transportation.
Forbid stampede
Pay attention to rain and
moisture-proof.
Stand upright and do
not tilt
Prohibition of tilting or
turning products
Front facing of the
inverter
Back facing of the
inverter
2.7 Warning Labels in Inverter
In order to ensure the safety of the person and property when using the product and to avoid
accidents, the following warning labels may be provided inside and outside the body of the string
inverter to remind the user of the safety precautions during operation.
PE: Here is the protective grounding terminal, requires reliable grounding to ensure the
safety of operators and equipment.
Warning: This component may present a hazard other than high voltage, which the user
should pay attention to.
High voltage hazard: This component may present a high voltage hazard and the user
must pay special attention.
Hot surface: Pay attention to the hot surface to prevent burns.
Refer to the user manual: Please refer to the corresponding instructions in the user
manual before operation.
Discharge identification: This equipment has an energy storage device. Before
maintenance, it is necessary to wait for the energy storage device to discharge to prevent
electric shock. The waiting time is not less than the indicated discharge time.

User Manual of String Inverter
12
2.8 Technical Data
Model
hopeSunHV 225KTL
hopeSunHV 250KTL
Input
parameters
Maximum input voltage
1500V
Minimum working voltage
500V
Working voltage range
500V~1500V
MPPT full load working
voltage range
820V~1320V
Rated input voltage
1080V
Maximum input current per
MPPT
30A
Maximum short circuit
current per MPPT
45A
Maximum input path
24
Number of MPPT
12
Output
parameters
Rated output power
225kW
250kW
Maximum output apparent
power
247.5kVA
255kVA
Maximum active power
247.5kW
255kW
Rated output voltage
3*462V/800V 3W+PE
Output voltage range
680~880V
Rated output frequency
50Hz/60Hz
Rated output current
162.4A
180.4A
Maximum output current
178.6A
184.0A
Power factor
-0.8~+0.8
Maximum total harmonic
distortion
<3%
Efficiency
Maximum efficiency
99.00%
Chinese Efficiency
98.45%
Protection
Input DC switch
Supported
DC polarity reverse
protection
Supported
DC surge protection
Class 2
Insulation impedance test
Supported
AC short circuit protection
Supported
Output surge protection
Class 2
String fault detection
Supported
Protection against PID
Supported (night repair method)
RCD detection
Supported
Display and
communication
Display
LED indicators;Wi-Fi/APP
RS485 communication
Supported
PLC communication
Supported
Communication interface
Wi-Fi/APP;PLC;RS485
Conventional
parameters
Working temperature
-40℃~+60℃
Maximum working altitude
4000m (must be derated above 3000m)
Noise index
≤80dB
Cooling mode
Intelligent air cooling
Protection grade
IP66
Topological structure
No transformer
Input terminal
MC4 plugging terminal (1500V)
Output terminal
Waterproof lock & OT terminal
Technical
indicators
Standard of satisfaction
NB/T 32004-2018