www.apmtech.cn
APM Technologies (Dongguan) Co., Ltd.
USER MANUAL
APM TECHNOLOGIES
PROFESSIONAL INNOVATIVE BRANDING SERVICE
Smart HF Series Single-phase PV Off-grid Inverter
說 明
INTRODUCTION
1
9
Part NO. 18950-358-00(PD)
USER MANUAL
APM Technologies (Dongguan) Co., Ltd
Smart HF Series Single-phase PV Off-grid Inverter
說 明
INTRODUCTION
1
9
Part NO. 18950-358-00(PD)
USER MANUAL
APM Technologies (Dongguan) Co., Ltd
Smart HF Series Single-phase PV Off-grid Inverter
Table of Contents
Foreword -----------------------------------------------------------------------
Precautions ---------------------------------------------------------------------
1 Production Introduction -------------------------------------------------------- 5
1.1 Product Features ----------------------------------------------------------
1.2 Main Specifications ---------------------------------------------------------
1.3 System Structure Diagram --------------------------------------------------
2 Display Panels ---------------------------------------------------------------- 9
2.1 Front Panel Display --------------------------------------------------------- 9
2.2 Front Panel LED Display----------------------------------------------------
2.3 Rear Panel Display---------------------------------------------------------
3 System Operation Mode Introduction -----------------------------------------
3.1 UPS Mode-----------------------------------------------------------------
3.2 PV Energy Saving Mode----------------------------------------------------
3.3 System Initial Setting-------------------------------------------------------
3.4 Steps for System Mode Setting---------------------------------------------
3.5 Monitoring Software (Optional)---------------------------------------------
3.6 Protection & Malfunction Warning Display----------------------------------
4 Installation and Wiring--------------------------------------------------------
4.1 Battery Connection Cables ------------------------------------------------
4.2 Proposed Battery Pack Configuration --------------------------------------
4.3 Packing List ---------------------------------------------------------------
4.4 Quick Installation Guide---------------------------------------------------
4.5 Schematic Diagram of System Installation ---------------------------------
4.6 Deduction Amount Usage-------------------------------------------------
4.7 Precautions of Load Application ------------------------------------------
5 Common Faults & Solutions ---------------------------------------------------
6 Warranty Statement ---------------------------------------------------------- 32
7 Product Recycling---------------------------------------------------------- -- 36
8 Contact Us------------------------------------------------------------------- 36
31
30
29
28
23
23
22
22
22
19
19
16
16
15
13
13
11
10
8
7
6
2
0
Table of Contents
Foreword -----------------------------------------------------------------------
Precautions ---------------------------------------------------------------------
1 Production Introduction -------------------------------------------------------- 5
1.1 Product Features ----------------------------------------------------------
1.2 Main Specifications ---------------------------------------------------------
1.3 System Structure Diagram --------------------------------------------------
2 Display Panels ---------------------------------------------------------------- 9
2.1 Front Panel Display --------------------------------------------------------- 9
2.2 Front Panel LED Display----------------------------------------------------
2.3 Rear Panel Display---------------------------------------------------------
3 System Operation Mode Introduction -----------------------------------------
3.1 UPS Mode-----------------------------------------------------------------
3.2 PV Energy Saving Mode----------------------------------------------------
3.3 System Initial Setting-------------------------------------------------------
3.4 Steps for System Mode Setting---------------------------------------------
3.5 Monitoring Software (Optional)---------------------------------------------
3.6 Protection & Malfunction Warning Display----------------------------------
4 Installation and Wiring--------------------------------------------------------
4.1 Battery Connection Cables ------------------------------------------------
4.2 Proposed Battery Pack Configuration --------------------------------------
4.3 Packing List ---------------------------------------------------------------
4.4 Quick Installation Guide---------------------------------------------------
4.5 Schematic Diagram of System Installation ---------------------------------
4.6 Deduction Amount Usage-------------------------------------------------
4.7 Precautions of Load Application ------------------------------------------
5 Common Faults & Solutions ---------------------------------------------------
6 Warranty Statement ---------------------------------------------------------- 32
7 Product Recycling---------------------------------------------------------- -- 36
8 Contact Us------------------------------------------------------------------- 36
31
30
29
28
23
23
22
22
22
19
19
16
16
15
13
13
11
10
8
7
6
2
0
Foreword
HF: Hybrid PV off-grid inverters (includes mains complementary/mains
charging function);
HFP: Pure PV off-grid inverters (without mains complementary/mains
charging function);
Rated Output Power;
48: Battery rated voltage input is 48V;
2: Rated Output Voltage 208Vac/220Vac/230Vac/240Vac;
PV: PV Off-grid Inverter;
Dear user, thank you for choosing the Smart HF Series Single Phase PV Off-
grid Inverter developed by APM Technologies (Dongguan) Co., Ltd. We sincerely
hope this solar inverter can meet your requirements.
All descriptions given in this User Manual are applicable for the following
models of single phase PV off-grid inverters:
PV248-2000HFR(W); PV248-2500HFR(W); PV248-3000HFR(W);
PV248-3500HFR(W); PV248-4000HFR(W); PV248-4500HFR(W);
All descriptions given in this User Manual are applicable to the following
models of Series Single-phase PV Off-grid Inverter (Pure PV off-grid inverters,
without mains complementary or mains charging function):
PV248-2000HFPR(W); PV248-2500HFPR(W);
PV248-3000HFPR(W); PV248-3500HFPR(W);
PV248-4000HFPR(W); PV248-4500HFPR(W);
Words Explanation：
“ S M A RT ” m e a n s fl e x i b l e an d in t e l l i g e n t , “HF” me a n s hig h - f r e q u e n c y
transformer isolation technology.
Please read this User Manual carefully before operating the PV inverter.
Model Coding:
PV248–3000HF/HFPR(W)
Rev：PD
May 2016
Declaration
APM Technologies (Dongguan) Co., Ltd has all contents used in this User
Manual, which shall not be reproduced without permission.
The contents of this User Manual will be constantly updated and revised, and
therefore mismatches or wrong descriptions of the products might occur. Please refer
to the actual purchase, download or acquire the latest User Manual from
www.apmtech.cn or salesperson.
1/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
0/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
R: Rack-mounted;
W: Wall-mounted;
Foreword
HF: Hybrid PV off-grid inverters (includes mains complementary/mains
charging function);
HFP: Pure PV off-grid inverters (without mains complementary/mains
charging function);
Rated Output Power;
48: Battery rated voltage input is 48V;
2: Rated Output Voltage 208Vac/220Vac/230Vac/240Vac;
PV: PV Off-grid Inverter;
Dear user, thank you for choosing the Smart HF Series Single Phase PV Off-
grid Inverter developed by APM Technologies (Dongguan) Co., Ltd. We sincerely
hope this solar inverter can meet your requirements.
All descriptions given in this User Manual are applicable for the following
models of single phase PV off-grid inverters:
PV248-2000HFR(W); PV248-2500HFR(W); PV248-3000HFR(W);
PV248-3500HFR(W); PV248-4000HFR(W); PV248-4500HFR(W);
All descriptions given in this User Manual are applicable to the following
models of Series Single-phase PV Off-grid Inverter (Pure PV off-grid inverters,
without mains complementary or mains charging function):
PV248-2000HFPR(W); PV248-2500HFPR(W);
PV248-3000HFPR(W); PV248-3500HFPR(W);
PV248-4000HFPR(W); PV248-4500HFPR(W);
Words Explanation：
“ S M A RT ” m e a n s f l e x i b l e a n d i n t e l l i g e n t , “ H F ” m e a n s h i g h - f r e q u e n c y
transformer isolation technology.
Please read this User Manual carefully before operating the PV inverter.
Model Coding:
PV248–3000HF/HFPR(W)
Rev：PD
May 2016
Declaration
APM Technologies (Dongguan) Co., Ltd has all contents used in this User
Manual, which shall not be reproduced without permission.
The contents of this User Manual will be constantly updated and revised, and
therefore mismatches or wrong descriptions of the products might occur. Please refer
to the actual purchase, download or acquire the latest User Manual from
www.apmtech.cn or salesperson.
1/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
0/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
R: Rack-mounted;
W: Wall-mounted;
Please read this User Manual carefully before installation:
Warning！
Precaution
(1)This symbol identifies information that improper operation may result in
serious injury and/or major damage to the equipment.
(2)Only qualified electricians are allowed to install and maintain the inverter.
(3)All the electric installation needs to be compliance with the national or local
laws and standards.
(4)Do not place the PV inverter in a high humidity environment or adjacent to a
water tower.
(5)Do not place the PV inverter in a high temperature environment, expose to
direct sunlight or near a fire location.
(6)When replacing the battery, please use the battery of same brand and
capacity. It is prohibited to use the battery of different brands and capacities
together. Never put the battery or battery bank nearby a fire source.
(7)Battery aging problem is increased with its increasing usage. Once the
aging problem is surfaced, please has the battery changed by a professional
technician to avoid incident of ba ttery cell leakages that may result in a
spontaneous combustion. It is recommended to perform a routine maintenance &
inspection on the battery.
Smart HF Series Single-phase PV Off-grid Inverter--Precaution
Smart HF Series Single-phase PV Off-grid Inverter--Precaution
3/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
2/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
Caution！
(1)This symbol identifies information that improper operation may result in
medium injury and/or damage to the equipment.
(2)Beware of hot surface. The inverter will become hot during operation.
Please avoid contact during operation.
(3) Keep the inverter's air intake and exhaust paths unobstructed (Note:
Should keep at least 15cm of distance from the back and front covers).
(4) Do not place any foreign object on the PV inverter to avoid interrupting
heat dispersion.
Must be grounded before operation.
Only qualified electricians are allowed to install and maintain the inverter.
Ignoring the following instructions can cause physical injury or death, or
damage to the equipment.
(1) For AC input side: external Miniature circuit breakers and Type B RCD
shall be used for final installation.
(2) For AC output side: external frequency transformer shall be used to create
a TN (grounded) system. It's means that the transformer secondary winding shall
one circuit conductor bonded to earth to create a grounded conductor and an
earthed system. External Miniature circuit breakers and Type A RCD shall be used
for the transformer output and then to household appliances.
(3) For battery terminal side: External Miniature circuit breakers shall be used
for final installation.
hazardous voltage and eneygy on battery terminal. Battery compartments
shall be used. The battery compartments shall be at least basic insulation
between it's live parts and metal frame.
(4) For PV input side, External Miniature circuit breakers and Array insulation
resistance detection device shall be used for final installation.
(1)The inverter input voltage does not exceed the maximum input voltage;
otherwise inverter damage may occur.
(2)The positive and negative pole of solar modules can not be grounded,
otherwise irrecoverable damage may occur.
(3)When the photovoltaic generator cells are exposed to light (even if it is
dim), the generator supplies DC voltage to the inverter.
(1)The recommended solar modules need to comply with IEC61730 Class A
rating.
(2)The inverters are only for crystalline silicon solar modules.
Please read this User Manual carefully before installation:
Warning！
Precaution
(1)This symbol identifies information that improper operation may result in
serious injury and/or major damage to the equipment.
(2)Only qualified electricians are allowed to install and maintain the inverter.
(3)All the electric installation needs to be compliance with the national or local
laws and standards.
(4)Do not place the PV inverter in a high humidity environment or adjacent to a
water tower.
(5)Do not place the PV inverter in a high temperature environment, expose to
direct sunlight or near a fire location.
(6)When replacing the battery, please use the battery of same brand and
capacity. It is prohibited to use the battery of different brands and capacities
together. Never put the battery or battery bank nearby a fire source.
(7)Battery aging problem is increased with its increasing usage. Once the
aging problem is surfaced, please has the battery changed by a professional
technician to avoid incide nt o f ba ttery cell leakages that may result in a
spontaneous combustion. It is recommended to perform a routine maintenance &
inspection on the battery.
Smart HF Series Single-phase PV Off-grid Inverter--Precaution
Smart HF Series Single-phase PV Off-grid Inverter--Precaution
3/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
2/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
Caution！
(1)This symbol identifies information that improper operation may result in
medium injury and/or damage to the equipment.
(2)Beware of hot surface. The inverter will become hot during operation.
Please avoid contact during operation.
(3) Keep the inverter's air intake and exhaust paths unobstructed (Note:
Should keep at least 15cm of distance from the back and front covers).
(4) Do not place any foreign object on the PV inverter to avoid interrupting
heat dispersion.
Must be grounded before operation.
Only qualified electricians are allowed to install and maintain the inverter.
Ignoring the following instructions can cause physical injury or death, or
damage to the equipment.
(1) For AC input side: external Miniature circuit breakers and Type B RCD
shall be used for final installation.
(2) For AC output side: external frequency transformer shall be used to create
a TN (grounded) system. It's means that the transformer secondary winding shall
one circuit conductor bonded to earth to create a grounded conductor and an
earthed system. External Miniature circuit breakers and Type A RCD shall be used
for the transformer output and then to household appliances.
(3) For battery terminal side: External Miniature circuit breakers shall be used
for final installation.
hazardous voltage and eneygy on battery terminal. Battery compartments
shall be used. The battery compartments shall be at least basic insulation
between it's live parts and metal frame.
(4) For PV input side, External Miniature circuit breakers and Array insulation
resistance detection device shall be used for final installation.
(1)The inverter input voltage does not exceed the maximum input voltage;
otherwise inverter damage may occur.
(2)The positive and negative pole of solar modules can not be grounded,
otherwise irrecoverable damage may occur.
(3)When the photovoltaic generator cells are exposed to light (even if it is
dim), the generator supplies DC voltage to the inverter.
(1)The recommended solar modules need to comply with IEC61730 Class A
rating.
(2)The inverters are only for crystalline silicon solar modules.
HAZARDOUS VOLTAGE AND ENEYGY ON BATTERY TERMINAl. Battery
compartments shall be used. Risk of fire and shock, connect battery terminals
prior to the turn off PV isolators and disconnect all AC switchs.
Smart HF Series Single-phase PV Off-grid Inverter--Precaution
Product Introduction
1-1
1
Smart HF series DC/AC sine wave PV off-grid inverters are adopting a highly
effec t i ve 3 2 - b it D S P c o n t rol , a n d a hig h - fre q u e ncy t r a nsf o r m er i s o lat i o n
technology. The adjustments of output voltage and frequency, switchover of UPS
mode or PV energy saving mode can all be performed from the setting keyboard at
the front panel or from a monitoring software.
Smart HF series inverter has two applicable modes: (1) UPS mode, and (2) PV
energy saving mode. The users can adjust these modes according to demand.
When the UPS mode is selected, electricity from a local power grid flows through a
bypass circuit to all the load appliances. When the power supply of local power
grid is not stable or being shut down, the load appliances will obtain power supply
from a battery bank through the PV inverter, which is acting as a typical
uninterruptible power supply system.
If used the PV energy saving mode together with solar panels, the PV inverter
will give priority to recharge the battery bank, and supply power to all the load
appliances at the same time, thus enabling the full use of solar energy in order to
cut back the amount of electricity energy feeding by the local power grid. Only
when the battery power is lower than the battery protection shutdown point, the
power supply will be obtained from the bypass local grid or the inverter shutdown,
so as to prolong the battery life. Users can choose the correct operating mode
according to their own needs or weather conditions.
Smart HF series products can charge the battery bank through both the solar
panels and AC local grid power, and enable PV inverters to feed the AC loads while
giving a priority to use the energy from solar panels to charge the battery bank
through MPPT controllers, hence to achieve the goal of maximum energy saving.
Only use a local power grid for battery charging when the PV energy cannot
guarantee the service life of battery so as to fully ensure the battery's safety and
service life. Inside the PV inverter are an integrated solar MPPT controller and a
local grid recharger, so the users only need to connect the PV inverter with
batteries, local power grid and solar panels to set up a green energy-saving power
supply station, which can fulfill the goal of green environmental protection and
energy saving.
Smart HF Series Single-phase PV Off-grid Inverter--Product Introduction
5/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
4/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
Do not carry out any wiring and inspection or changing components when the
power supply is applied. Hazardous voltages may still be present in the inverter
even if the external circuit breakers are all switched off. Wait at least 500 s after
switching off the inverter. This ensures that the capacitors are electrically
discharged.
Do not dispose of the product together with household waste, but only in
accordance with the locally applicable regulations for the disposal of electronic
waste.
Please read this User Manual carefully before installation.
Instructions
Appliance is in compliance with CE standards.
Warning！
HAZARDOUS VOLTAGE AND ENEYGY ON BATTERY TERMINAl. Battery
compartments shall be used. Risk of fire and shock, connect battery terminals
prior to the turn off PV isolators and disconnect all AC switchs.
Smart HF Series Single-phase PV Off-grid Inverter--Precaution
Product Introduction
1-1
1
Smart HF series DC/AC sine wave PV off-grid inverters are adopting a highly
effec t i ve 3 2 - b it D S P c o n t rol , a n d a hig h - fre q u e ncy t r a nsf o r m er i s o lat i o n
technology. The adjustments of output voltage and frequency, switchover of UPS
mode or PV energy saving mode can all be performed from the setting keyboard at
the front panel or from a monitoring software.
Smart HF series inverter has two applicable modes: (1) UPS mode, and (2) PV
energy saving mode. The users can adjust these modes according to demand.
When the UPS mode is selected, electricity from a local power grid flows through a
bypass circuit to all the load appliances. When the power supply of local power
grid is not stable or being shut down, the load appliances will obtain power supply
from a battery bank through the PV inverter, which is acting as a typical
uninterruptible power supply system.
If used the PV energy saving mode together with solar panels, the PV inverter
will give priority to recharge the battery bank, and supply power to all the load
appliances at the same time, thus enabling the full use of solar energy in order to
cut back the amount of electricity energy feeding by the local power grid. Only
when the battery power is lower than the battery protection shutdown point, the
power supply will be obtained from the bypass local grid or the inverter shutdown,
so as to prolong the battery life. Users can choose the correct operating mode
according to their own needs or weather conditions.
Smart HF series products can charge the battery bank through both the solar
panels and AC local grid power, and enable PV inverters to feed the AC loads while
giving a priority to use the energy from solar panels to charge the battery bank
through MPPT controllers, hence to achieve the goal of maximum energy saving.
Only use a local power grid for battery charging when the PV energy cannot
guarantee the service life of battery so as to fully ensure the battery's safety and
service life. Inside the PV inverter are an integrated solar MPPT controller and a
local grid recharger, so the users only need to connect the PV inverter with
batteries, local power grid and solar panels to set up a green energy-saving power
supply station, which can fulfill the goal of green environmental protection and
energy saving.
Smart HF Series Single-phase PV Off-grid Inverter--Product Introduction
5/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
4/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
Do not carry out any wiring and inspection or changing components when the
power supply is applied. Hazardous voltages may still be present in the inverter
even if the external circuit breakers are all switched off. Wait at least 500 s after
switching off the inverter. This ensures that the capacitors are electrically
discharged.
Do not dispose of the product together with household waste, but only in
accordance with the locally applicable regulations for the disposal of electronic
waste.
Please read this User Manual carefully before installation.
Instructions
Appliance is in compliance with CE standards.
Warning！
Smart HF series inverter has a pure sine wave output, and it can continuously
supply 105% load output and has the capacity to cope with 120% short time
overload and 150% instantaneous overload. The PV inverter is suitable to use for
inductive, capacitive and other harsh load types. Application areas covers
c o m p u t e r, c o m m u n i c a t i o n , y a c h t a n d r e c r e a t i o n a l v e h i c l e a n d h o m e
entertainment devices, motor, power device, industrial control equipment and
various types of household appliances.
1.1 Product Features
Pure sine wave output (THD < 3%)
32-bit high efficient DSP control and high-frequency transformer isolation
technology.
Max. efficiency is up to 93%
Rated output power: 100% load. Instantaneous output power: 150% load.
Output voltage, efficiency and operating mode are adjustable via the front
panel or remote monitoring.
Built-in input and output bypass protection functions.
UPS and PV energy-saving modes that can easily be switched over.
Equipped with a controllable bypass for local grid power output, and the
switch-over time between the grid and PV inverter is ≦10ms(Typ.).
Visual LED display of the complete operating status.
Low battery power warning alarm and indication.
MPPT control, high charging efficiency with the charging current of up to 50A.
RS485 remote monitoring function (Optional).
2-year product warranty.
Smart HF Series Single-phase PV Off-grid Inverter--Product Introduction
1.2 Main Specifications
Smart HF Series Single-phase PV Off-grid Inverter--Product Introduction
7/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
6/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
Specifications for the Smart HF Series Single-phase PV Off-grid Inverter
Models
PV248-2000HFW
PV248-2000HFR
PV248-2000HFPW
PV248-2000HFPR
PV248-2500HFW
PV248-2500HFR
PV248-2500HFPW
PV248-2500HFPR
PV248-3000HFW
PV248-3000HFR
PV248-3000HFPW
PV248-3000HFPR
PV248-3500HFW
PV248-3500HFR
PV248-3500HFPW
PV248-3500HFPR
PV248-4000HFW
PV248-4000HFR
PV248-4000HFPW
PV248-4000HFPR
PV248-4500HFW
PV248-4500HFR
PV248-4500HFPW
PV248-4500HFPR
PV Input
Vmax PV(Vd.c.)
Isc PV(A)
PV input operating voltage
range(Vd.c.)
Full load MPPT range
(Vd.c.)
Maximum operating PV
input current (A)
Max. inverter backfeed
current to the array (A)
RechargingEfficiency
95V
50A
60-95V
75-95V
41A
96.5%
AC output
Nominal AC output voltage
(Va.c.)
Adjustable AC output
voltage (Va.c.)
Nominal AC output
frequency (Hz)
Wave Type
Efficiencies
Maximum continuous AC
output power (VA)
Maximum continuous AC
output current (A)
Power factor range
Maximum output fault
current
Maximum output over
current protection
Protections
230 Va.c.
208 Va.c./220 Va.c./230 Va.c./240 Va.c.
50 Hz
Pure sine wave (THD < 3.0%)
Max. 93%
2500VA 3000VA 3500VA 4000VA 4500VA
9A 11.5A 14A 16.5A 19A 21.5A
1 1 1 1 1 1
18A 23A 28A 33A 38A
43A
13.5A 17A 21A 25A 28.5A
32A
SCP, OLP & OPT
AC input
Nominal AC input voltage
(Va.c.)
Nominal AC input
frequency (Hz)
Maximum continuous AC
input power (VA)
Maximum continuous AC
input current (A)
230 Va.c.
50 Hz
2000VA 2500VA 3000VA 3500VA 4000VA 4500VA
9A 11.5A 14A 16.5A 19A 21.5A
Remark: The above AC input parameters are not applicable to the inverters denoting by HFP
Battery terminal (Charging mode)
Nominal charging voltage
(Vd.c.)
Charging voltage range
(Vd.c.)
Nominal charging current
(A)
Maximum continuous
charging current (A)
Maximum continuous
charging power (W)
55±0.4V
43-55V
45A
50A
2400W
Battery terminal (Discharging mode)
Nominal discharge voltage
(Vd.c.)
Nominal discharge current
(A)
Maximum continuous
discharging current (A)
48V
41.7A 52.5A 62.5A 73A 83.5A 94A
46.5A 58.5A 70A 81.5A 93A 105A
65A
2000VA
Smart HF series inverter has a pure sine wave output, and it can continuously
supply 105% load output and has the capacity to cope with 120% short time
overload and 150% instantaneous overload. The PV inverter is suitable to use for
inductive, capacitive and other harsh load types. Application areas covers
c o m p u t e r, c o m m u n i c a t i o n , y a c h t a n d r e c r e a t i o n a l v e h i c l e a n d h o m e
entertainment devices, motor, power device, industrial control equipment and
various types of household appliances.
1.1 Product Features
Pure sine wave output (THD < 3%)
32-bit high efficient DSP control and high-frequency transformer isolation
technology.
Max. efficiency is up to 93%
Rated output power: 100% load. Instantaneous output power: 150% load.
Output voltage, efficiency and operating mode are adjustable via the front
panel or remote monitoring.
Built-in input and output bypass protection functions.
UPS and PV energy-saving modes that can easily be switched over.
Equipped with a controllable bypass for local grid power output, and the
switch-over time between the grid and PV inverter is ≦10ms(Typ.).
Visual LED display of the complete operating status.
Low battery power warning alarm and indication.
MPPT control, high charging efficiency with the charging current of up to 50A.
RS485 remote monitoring function (Optional).
2-year product warranty.
Smart HF Series Single-phase PV Off-grid Inverter--Product Introduction
1.2 Main Specifications
Smart HF Series Single-phase PV Off-grid Inverter--Product Introduction
7/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
6/36
PROFESSIONAL INNOVATIVE BRANDING SERVICE
Specifications for the Smart HF Series Single-phase PV Off-grid Inverter
Models
PV248-2000HFW
PV248-2000HFR
PV248-2000HFPW
PV248-2000HFPR
PV248-2500HFW
PV248-2500HFR
PV248-2500HFPW
PV248-2500HFPR
PV248-3000HFW
PV248-3000HFR
PV248-3000HFPW
PV248-3000HFPR
PV248-3500HFW
PV248-3500HFR
PV248-3500HFPW
PV248-3500HFPR
PV248-4000HFW
PV248-4000HFR
PV248-4000HFPW
PV248-4000HFPR
PV248-4500HFW
PV248-4500HFR
PV248-4500HFPW
PV248-4500HFPR
PV Input
Vmax PV(Vd.c.)
Isc PV(A)
PV input operating voltage
range(Vd.c.)
Full load MPPT range
(Vd.c.)
Maximum operating PV
input current (A)
Max. inverter backfeed
current to the array (A)
RechargingEfficiency
95V
50A
60-95V
75-95V
41A
96.5%
AC output
Nominal AC output voltage
(Va.c.)
Adjustable AC output
voltage (Va.c.)
Nominal AC output
frequency (Hz)
Wave Type
Efficiencies
Maximum continuous AC
output power (VA)
Maximum continuous AC
output current (A)
Power factor range
Maximum output fault
current
Maximum output over
current protection
Protections
230 Va.c.
208 Va.c./220 Va.c./230 Va.c./240 Va.c.
50 Hz
Pure sine wave (THD < 3.0%)
Max. 93%
2500VA 3000VA 3500VA 4000VA 4500VA
9A 11.5A 14A 16.5A 19A 21.5A
1 1 1 1 1 1
18A 23A 28A 33A 38A
43A
13.5A 17A 21A 25A 28.5A
32A
SCP, OLP & OPT
AC input
Nominal AC input voltage
(Va.c.)
Nominal AC input
frequency (Hz)
Maximum continuous AC
input power (VA)
Maximum continuous AC
input current (A)
230 Va.c.
50 Hz
2000VA 2500VA 3000VA 3500VA 4000VA 4500VA
9A 11.5A 14A 16.5A 19A 21.5A
Remark: The above AC input parameters are not applicable to the inverters denoting by HFP
Battery terminal (Charging mode)
Nominal charging voltage
(Vd.c.)
Charging voltage range
(Vd.c.)
Nominal charging current
(A)
Maximum continuous
charging current (A)
Maximum continuous
charging power (W)
55±0.4V
43-55V
45A
50A
2400W
Battery terminal (Discharging mode)
Nominal discharge voltage
(Vd.c.)
Nominal discharge current
(A)
Maximum continuous
discharging current (A)
48V
41.7A 52.5A 62.5A 73A 83.5A 94A
46.5A 58.5A 70A 81.5A 93A 105A
65A
2000VA
1.3 System Block Diagram
Solar Panel
AC Input
Polarity
Detection
AC Charger
Solar Charger
AC Output
Battery
Fuse
LOAD
EMI
Filter
DC/DC
Converter
DC/AC
Inverter
CPU
Controller
LED
F -
igure1 1 System Block Diagram
Display
Smart HF Series Single-phase PV Off-grid Inverter--Product Introduction
2
Display Panel Introduction
2.1 Front Panel
A
B
C
D
E
Figure 2.1.1: Overview of the front panel for rack-mounted smart HF series PV off-gridinverter
D
E
A
B
C
A
B
C
Figure 2.1.2: Overview of the front panel for wall-mounted smart HF series PV off-grid inverter
RS485 communication port: Optional RS485 connecting wire to connect with
a PC for remote monitoring.
POWER ON/OFF switch: When switch is at “ON” position the inverter is
operating, whereas when it is at “Off” position the inverter is shut down.
LED display panel: Display the operating condition, load capacity, battery
voltage and other information of the inverter.
Setting: work mode, output voltage, frequency and power saving mode, and
other function settings.
Air intake hole: For heat dissipation, continuous ventilation must be kept to
ensure a stable product operation.
Smart HF Series Single-phase PV Off-grid Inverter--Display Panel Introduction
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Maximum continuous
discharging power (W)
Protections
2000W 2500W 3000W 3500W 4000W 4500W
General parameters
OCP, Battery RCP, Low battery automatic alarm, Low battery automatic cutoff.
Protective class
Ingress protection (IP)
Relative humidity range
Allowable Altitude
Storage temperature range
Ambient service
temperature range
Dimension Reference
Weight Reference
I
IP20
5 % to 85 % (Non condensing)
2000m (For over 2000m, the rated power decreases 10% by every 1000m drop).
-40℃ to +85℃
-20℃ to +40℃, Indoor, conditioned
482.6×88.9×450.0mm(rack-mounted);347×475×165mm(wall-mounted)
16Kg 16Kg 18Kg 18Kg 18Kg 18Kg
MCCB
RCD
MCCB
IRDD
MCCB
Frequency
Transformer
MCCB
RCD
1.3 System Block Diagram
Solar Panel
AC Input
Polarity
Detection
AC Charger
Solar Charger
AC Output
Battery
Fuse
LOAD
EMI
Filter
DC/DC
Converter
DC/AC
Inverter
CPU
Controller
LED
F -
igure1 1 System Block Diagram
Display
Smart HF Series Single-phase PV Off-grid Inverter--Product Introduction
2
Display Panel Introduction
2.1 Front Panel
A
B
C
D
E
Figure 2.1.1: Overview of the front panel for rack-mounted smart HF series PV off-gridinverter
D
E
A
B
C
A
B
C
Figure 2.1.2: Overview of the front panel for wall-mounted smart HF series PV off-grid inverter
RS485 communication port: Optional RS485 connecting wire to connect with
a PC for remote monitoring.
POWER ON/OFF switch: When switch is at “ON” position the inverter is
operating, whereas when it is at “Off” position the inverter is shut down.
LED display panel: Display the operating condition, load capacity, battery
voltage and other information of the inverter.
Setting: work mode, output voltage, frequency and power saving mode, and
other function settings.
Air intake hole: For heat dissipation, continuous ventilation must be kept to
ensure a stable product operation.
Smart HF Series Single-phase PV Off-grid Inverter--Display Panel Introduction
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Maximum continuous
discharging power (W)
Protections
2000W 2500W 3000W 3500W 4000W 4500W
General parameters
OCP, Battery RCP, Low battery automatic alarm, Low battery automatic cutoff.
Protective class
Ingress protection (IP)
Relative humidity range
Allowable Altitude
Storage temperature range
Ambient service
temperature range
Dimension Reference
Weight Reference
I
IP20
5 % to 85 % (Non condensing)
2000m (For over 2000m, the rated power decreases 10% by every 1000m drop).
-40℃ to +85℃
-20℃ to +40℃, Indoor, conditioned
482.6×88.9×450.0mm(rack-mounted);347×475×165mm(wall-mounted)
16Kg 16Kg 18Kg 18Kg 18Kg 18Kg
MCCB
RCD
MCCB
IRDD
MCCB
Frequency
Transformer
MCCB
RCD
A
B
C
AC LINE: If the LED indicator of local power grid is on, that implies connection
with the power grid and that the status is normal. If the LED is flashing, it
implies a connection is made yet an abnormal status of the power grid occurs
(over voltage, under voltage or exceed stable voltage range).
AC CHARGE: If the LED indicator of local power grid charger is on, that
implies the built-in AC charger is charging a battery. If the LED is flashing, it
implies the AC input is available yet the AC charger is not operating.
PV CHARGE: If the LED indicator of Solar MPPT charging controller is on, that
implies the solar panels are charging to the battery bank through the MPPT
built in the PV inverter. If the LED is flashing, it implies the PV input is
LED display panel: To display the operating status, loading capacity, battery
voltage and other information.
Function setting button: Operation mode, output voltage, frequency and
power saving mode, and other function settings.
Wall mounting hole.
2.2 Front Panel LED Display
LED Display
Loading
LED 1 ON
0~25%
LED 1~2 ON
26%~50%
LED 1~3 ON
51%~75%
LED 1~4 ON
76%~100%
LOAD: Output load indicators display the existing load capacity.
AC LINE
AC CHARGE
PV CHARGE
BATTERY
100%
75%
50%
25%
100%
75%
50%
25%
LOAD
INVERTER
BY PASS
Run
Min.ALM
Maj.ALM
Setting
Figure 2.2: Front Panel LED Display
BATTERY: Battery capacity indicators display the battery residual capacity.
LED Display
Battery Capacity
LED 1 ON
0~25%
LED 1~2 ON
26%~50%
LED 1~3 ON
51%~75%
LED 1~4 ON
76%~100%
Smart HF Series Single-phase PV Off-grid Inverter--Display Panel Introduction
available yet the PV controller is not operating.
INVERTER: If the LED indicator of inverter mode is on, that implies the PV
inverter is converting electricity from the battery bank to the AC output and
feed to the loads.
BY PASS: Bypass power indicator with the “ON” implying the local power grid
through the built-in relay in PV inverter is feeding the loading devices.
RUN: PV inverter's operating indicator with the “ON” implying the PV inverter
is started and at a normal operating status that it can supply an AC voltage to
the loading devices.
Min. ALM: PV inverter's warning indicator with the “ON” implying a warning
notice that to be handled without delay. There will be intermittent alarm go off
to remind the users despite the PV inverter can still supply output power to
loading devices.
Maj. ALM: PV inverter's malfunction indicator with the “ON” implying the PV
inverter cannot operate normally due to a fault that the user is required to
troubleshoot the issue immediately.
2.3 Rear Panel Display
A
B
Figure 2.3.1: Overview of the rear panel for rack-mounted smart HF series PV off-grid inverter.
A
C
D
B
C
D
E
E
Input and Output Terminals: Including the local power grid AC input terminals
(L, N), inverter AC output terminals (L, N), and grounding terminal.
PV Input Terminal (PV+, PV-).
Battery Input Terminals (BAT+, BAT-).
Fan Exhaust Vent.
Overcurrent protection device for local power input.
Smart HF Series Single-phase PV Off-grid Inverter--Display Panel Introduction
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A
A
B
C
AC LINE: If the LED indicator of local power grid is on, that implies connection
with the power grid and that the status is normal. If the LED is flashing, it
implies a connection is made yet an abnormal status of the power grid occurs
(over voltage, under voltage or exceed stable voltage range).
AC CHARGE: If the LED indicator of local power grid charger is on, that
implies the built-in AC charger is charging a battery. If the LED is flashing, it
implies the AC input is available yet the AC charger is not operating.
PV CHARGE: If the LED indicator of Solar MPPT charging controller is on, that
implies the solar panels are charging to the battery bank through the MPPT
built in the PV inverter. If the LED is flashing, it implies the PV input is
LED display panel: To display the operating status, loading capacity, battery
voltage and other information.
Function setting button: Operation mode, output voltage, frequency and
power saving mode, and other function settings.
Wall mounting hole.
2.2 Front Panel LED Display
LED Display
Loading
LED 1 ON
0~25%
LED 1~2 ON
26%~50%
LED 1~3 ON
51%~75%
LED 1~4 ON
76%~100%
LOAD: Output load indicators display the existing load capacity.
AC LINE
AC CHARGE
PV CHARGE
BATTERY
100%
75%
50%
25%
100%
75%
50%
25%
LOAD
INVERTER
BY PASS
Run
Min.ALM
Maj.ALM
Setting
Figure 2.2: Front Panel LED Display
BATTERY: Battery capacity indicators display the battery residual capacity.
LED Display
Battery Capacity
LED 1 ON
0~25%
LED 1~2 ON
26%~50%
LED 1~3 ON
51%~75%
LED 1~4 ON
76%~100%
Smart HF Series Single-phase PV Off-grid Inverter--Display Panel Introduction
available yet the PV controller is not operating.
INVERTER: If the LED indicator of inverter mode is on, that implies the PV
inverter is converting electricity from the battery bank to the AC output and
feed to the loads.
BY PASS: Bypass power indicator with the “ON” implying the local power grid
through the built-in relay in PV inverter is feeding the loading devices.
RUN: PV inverter's operating indicator with the “ON” implying the PV inverter
is started and at a normal operating status that it can supply an AC voltage to
the loading devices.
Min. ALM: PV inverter's warning indicator with the “ON” implying a warning
notice that to be handled without delay. There will be intermittent alarm go off
to remind the users despite the PV inverter can still supply output power to
loading devices.
Maj. ALM: PV inverter's malfunction indicator with the “ON” implying the PV
inverter cannot operate normally due to a fault that the user is required to
troubleshoot the issue immediately.
2.3 Rear Panel Display
A
B
Figure 2.3.1: Overview of the rear panel for rack-mounted smart HF series PV off-grid inverter.
A
C
D
B
C
D
E
E
Input and Output Terminals: Including the local power grid AC input terminals
(L, N), inverter AC output terminals (L, N), and grounding terminal.
PV Input Terminal (PV+, PV-).
Battery Input Terminals (BAT+, BAT-).
Fan Exhaust Vent.
Overcurrent protection device for local power input.
Smart HF Series Single-phase PV Off-grid Inverter--Display Panel Introduction
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A
A
B
C
D
E
Figure 2-3-2 Rear Panel Overview (Wall-mounted)
B E
D
C
A
D
F
G
F
G
Input and Output Terminals: Including local power grid AC input terminal
(L,N), inverter AC output terminal (L,N), and grounding terminal.
PV Input Terminal (PV+, PV-)
Battery Input Terminal (BAT+, BAT-)
Exhaust Vent of Fan
POWER ON/OFF switch: Switch to the “ON” position to start the PV inverter,
whereas switch to the “OFF” position to turn off the PV inverter.
RS485 interface.
Overcurrent protection device for mains power input.
Smart HF Series Single-phase PV Off-grid Inverter--Display Panel Introduction
3
System Operation Mode Introduction
Smart HF Series Single-phase PV Off-grid Inverter is a DC/AC pure sine wave
output inverter with digital and high efficient micro controller (CPU). The PV
inverter has both UPS mode and PV saving energy mode, which allows the user to
switch operation mode based on own needs. The PV inverter's factory default
setting is PV power saving mode, but the users can reset it to UPS mode through a
manual adjustment (Please refer to Section 3.4 for detailed operation) or
monitoring software (optional) based on the environmental and power supply
conditions.
The main difference between UPS mode and PV power saving mode is in the
proportion of energy saving. When PV inverter is set at the UPS mode and as long
the power grid can maintain a normal electricity supply, the PV inverter will switch
over to a bypass mode for supplying power to loads, and consequently the
proportion of energy saving is rather low. On the other hand, when the PV inverter
is set at the PV power saving mode, the PV inverter will take priority using the
solar power source, and consequently the proportion of energy saving is very
high. Only when the PV energy input is not available, and the battery power is
critically low will the PV inverter switch over to the power grid for a power supply. If
the power supply from a power grid is not available at this time, the system will
automatically shut down.
3.1 UPS Mode
When the PV inverter is started by a user, it will automatically use the bypass
mode to supply electricity energy directly to the loading devices. At this time,
the solar charger is charging the battery while the mains charger is shut
down. If the solar charger is not in operation, then the mains charger will
make judgment according to the battery voltage sampling value for whether
or not to charge the battery. If the battery voltage falls below the start
threshold voltage of the mains charger at 50V, the mains charger will charge
the battery all the time. If the battery voltage is higher than the start threshold
voltage of the mains charger, then the mains charger will not work.
Smart HF Series Single-phase PV Off-grid Inverter--System Operation Mode Introduction
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A
B
C
D
E
Figure 2-3-2 Rear Panel Overview (Wall-mounted)
B E
D
C
A
D
F
G
F
G
Input and Output Terminals: Including local power grid AC input terminal
(L,N), inverter AC output terminal (L,N), and grounding terminal.
PV Input Terminal (PV+, PV-)
Battery Input Terminal (BAT+, BAT-)
Exhaust Vent of Fan
POWER ON/OFF switch: Switch to the “ON” position to start the PV inverter,
whereas switch to the “OFF” position to turn off the PV inverter.
RS485 interface.
Overcurrent protection device for mains power input.
Smart HF Series Single-phase PV Off-grid Inverter--Display Panel Introduction
3
System Operation Mode Introduction
Smart HF Series Single-phase PV Off-grid Inverter is a DC/AC pure sine wave
output inverter with digital and high efficient micro controller (CPU). The PV
inverter has both UPS mode and PV saving energy mode, which allows the user to
switch operation mode based on own needs. The PV inverter's factory default
setting is PV power saving mode, but the users can reset it to UPS mode through a
manual adjustment (Please refer to Section 3.4 for detailed operation) or
monitoring software (optional) based on the environmental and power supply
conditions.
The main difference between UPS mode and PV power saving mode is in the
proportion of energy saving. When PV inverter is set at the UPS mode and as long
the power grid can maintain a normal electricity supply, the PV inverter will switch
over to a bypass mode for supplying power to loads, and consequently the
proportion of energy saving is rather low. On the other hand, when the PV inverter
is set at the PV power saving mode, the PV inverter will take priority using the
solar power source, and consequently the proportion of energy saving is very
high. Only when the PV energy input is not available, and the battery power is
critically low will the PV inverter switch over to the power grid for a power supply. If
the power supply from a power grid is not available at this time, the system will
automatically shut down.
3.1 UPS Mode
When the PV inverter is started by a user, it will automatically use the bypass
mode to supply electricity energy directly to the loading devices. At this time,
the solar charger is charging the battery while the mains charger is shut
down. If the solar charger is not in operation, then the mains charger will
make judgment according to the battery voltage sampling value for whether
or not to charge the battery. If the battery voltage falls below the start
threshold voltage of the mains charger at 50V, the mains charger will charge
the battery all the time. If the battery voltage is higher than the start threshold
voltage of the mains charger, then the mains charger will not work.
Smart HF Series Single-phase PV Off-grid Inverter--System Operation Mode Introduction
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When the battery capacity is fully charged to 55V, the solar charger will enter
the floating charge state to charge the battery. At this point, it is still the
bypass mode to supply power to the loads.
If the mains power outage happened instantaneously or the mains power has
exceeded the constant voltage input range, the PV inverter will automatically
and immediately switch over to the inverter output power so as to replicate the
power supply of loading devices, and guarantee that there is no interruption
or damage to the devices caused by an unstable mains power or power
outage, and hence subsequently causing unnecessary economic losses to
the users.
If the mains power is restored to a normal condition, the PV inverter will
automatically switches to the bypass mode and resume mains power to the
loads.
If the mains power remains cutoff and in the case of the PV charging energy is
less than the energy required by loads, the voltage of battery will gradually
decrease. When the battery voltage is below 45V，the PV inverter will rapidly
start beeping an alarm at a frequency of about 1 second at a time. When the
battery is almost drained completely, the PV inverter is about to shut down.
When battery voltage falls to 43V, the battery power is almost completely
drained. If the mains power is still not available at this time, the PV inverter
will automatically shut down its output. At this stage, the PV inverter remains
in a standby mode and waiting for the mains power to restore and the input of
PV energy.
If the user turns the PV inverter's power switch to the “OFF” position at this
moment, the inverter is shut down completely. The user needs to manually
turn the power switch of PV inverter to the “ON” position in order to restart the
inverter. If the PV inverter stays in a standby mode and when the mains power
is restored, the inverter will automatically switch to the bypass mode to
supply power for the loads. The PV inverter will also start to use the mains
power charger to charge the battery so as to prolong the service life of battery.
If the mains power supply remains cutoff but PV energy input is available, the
PV inverter will automatically turn on the solar charger to recharge the
battery, and at this stage the PV inverter has no output. When the solar
charg er has c harged t he batte ry vo ltage to 52 V, the P V i nv erter wi ll
automatically initiate the inverter output power for supplying power to the
loads.
Smart HF Series Single-phase PV Off-grid Inverter--System Operation Mode Introduction
UPS mode is not available for HFP series products.
When the mains power supply is cut off, the PV inverter's output power
supplying time is depended on the battery capacity and the amount of loads
being used.
The advantage of UPS mode is that the battery capacity will generally be
maintained at a level higher than 90% in order to ensure an adequate power
supply to the loading devices in the event of a short period utility power
outage. As the number of deep discharge of the battery is reduced, and the
battery service life is closely related to the numbers of deep discharge, hence
the UPS mode can significantly extend the service life of battery. Since UPS
mode is of low energy saving efficiency, it is suitable to use in places like the
commercial offices and residential areas where the mains power supply is
available and relatively stable.
Remarks:
(1)
(2)
(3)
3.2 PV Energy Saving Mode
After the user starts up the PV inverter, it will automatically switch to the
inverter output to supply power to the loading devices, and start the solar
charger to charge the battery.
When the PV charging energy is lower than the energy required by the loads,
the battery voltage will gradually decrease. When the battery voltage is below
45V, the PV inverter will start rapid beeping alarm at a frequency of about 1
beep per second to alert the users that the battery power is about to run out. If
the mains power input is normal, then the PV inverter will start off the mains
power charger to charge the battery.
When the battery voltage falls to 43V, the battery power is almost exhausted.
If the input of mains power is normal at this time, the PV inverter will
automatically switch to the bypass mode so as to allow the mains power to
supply the loading devices. The PV inverter at the same time will start the
mains power charger for charging the battery. If solar charger has charged the
battery, then shut down the mains charger as the purpose of energy saving is
achieved. If the mains power input is not available at this stage, the PV
Smart HF Series Single-phase PV Off-grid Inverter--System Operation Mode Introduction
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