Epever NPower Series User manual

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PURE SINE WAVE INVERTER
USER MANUAL
NP260; NP400；
NP600; NP800; NP1000
NP1200; NP1500; NP2000
NP2500; NP3000; NP3500
NP4000; NP5000

Contents
Important safety instructions .................................................................1
1 Overview............................................................................................4
2 Characteristics ...................................................................................5
3 Naming rule...................................................................................... 11
4 Connection diagram.........................................................................13
5 Remote meter(Optional)...................................................................15
5.1 Appearance ................................................................................................ 15
5.2 Status display ............................................................................................. 15
5.3 Buttons....................................................................................................... 16
5.4 LCD interface.............................................................................................. 16
5.5 Settings ...................................................................................................... 16
5.6 Error code................................................................................................... 17
6 Installation........................................................................................18
6.1 Attentions.................................................................................................... 18
6.2 Wire size and circuit breaker....................................................................... 18
6.3 Mounting..................................................................................................... 20
7 Protections.......................................................................................27
8 Troubleshooting................................................................................29
9 Maintenance.....................................................................................30
10 Specifications.................................................................................31
AnnexⅠ Disclaimer.............................................................................43

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Important safety instructions
Please reserve this manual for future review.
This manual contains all the instructions about safety, installation, and operation for the NPower series
pure sine wave inverter (in the following, referred to as the inverter).
1. Explanation of symbols
To enable the user to use the product efficiently and ensure personal and property safety, please read the
related words carefully when encountering the following symbols in the manual.
Symbol
Definition
TIP
Indicate any practical advice for reference.
IMPORTANT: Indicates a critical tip during the operation, if ignored, may cause the
device to run in error.
CAUTION: Indicates potential hazards, if not avoided, may cause the device
damaged.
WARNING: Indicates the danger of electric shock, if not avoided, would cause
casualties.
WARNING HOT SURFACE: Indicates the risk of high temperature, if not avoided,
would cause scalds.
Read the user manual carefully before any operation.
WARNING
The entire system should be installed by professional and technical personnel.
2. Requirements for professional and technical personnel
Professionally trained;
Familiar with related safety specifications for the electrical system;
Read the entire user manual to get related safety cautions.
3. Professional and technical personnel is allowed to do
Install the inverter to the specified location;
Test-run before installation;
Operate and maintain the inverter.
4. General installation notes
When receiving the inverter, please check if there is any damage that occurred in transportation. If

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you find any problem, please contact the transportation company or our company in time.
Follow the instructions before placing or moving the inverter.
Make sure there isn't any arc danger in the operation area before installation.
Inverter input is recommended to connect to the battery. The minimum capacity of the battery
(expressed in AH) should be calculated in the following way: 5 times the inverter/battery voltage's
rated power.
Keep the inverter out of children's touch.
As an off-grid inverter, connect the AC output terminals to the utility or electrical source is not
recommended; otherwise, the inverter may be damaged.
The inverter can be used singly; a parallel connection or in series will damage the inverters.
5. Safety cautions for mechanical installation
Before installation, ensure the inverter has no electrical connection.
Ensure the inverter installation's heat dissipation space. Do not install the inverter in humid, greasy,
flammable, explosive, dust accumulative, or other severe environments.
6. Safety cautions for electrical connection
Check if all the wiring connections are tight to avoid the danger of heat accumulation due to a loose
connection.
The protective grounding must be connected to the ground. The cross-section of the wire should not
be less than 4mm2.
Connect the DC input according to the requirement strictly. The power inverter has a relatively wide
input range. Still, too high or too low input may cause problems even destroy the inverter.
The wire connects between the battery and inverter should be shorter than 3m, the current density
should be less than 5A/mm2. In contrast, the output of the inverter is fully loaded. If the wire is longer
than 3m, the current density should be reduced.
A fuse or breaker should be used between battery and inverter; the fuse or breaker value should be
twice the inverter rated input current.
DO NOT put the inverter close to the flooded lead-acid battery because the terminals' sparkle may
ignite the hydrogen released by the battery.
The output is forbidden to connect other power sources or utilities; otherwise, the inverter will be
damaged. The inverter must be off when connecting the load.
Do not directly connect the battery charger or similar devices to the input terminal of the inverter.
7. Safety cautions for inverter operation
Do not touch it when the inverter is working. Its surface may become very hot. Keep away from the
material or device which may suffer from high temperature.

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Do not open the inverter to operate when it is working.
The AC output with high voltage during the inverter operation, so do NOT touch the connection point;
it may cause danger.
8. The dangerous operations which would cause electric arc, fire or explosion
Touch the wire end, which hasn't been insulation treated, may cause electriferous.
Touch the wiring copper row, terminals, or internal devices, which may cause electriferous.
The power cable connection is loose.
Screw or other spare parts inadvertently falls into the inverter.
Incorrect operation is performed by untrained non-professional, or technical personnel.
WARNING
Once an accident occurs, it must be handled by professional and technical personnel.
Improper operations would cause a more serious accident.
9. Safety cautions for stopping the inverter
After the inverter stop working for ten minutes, the internal conductive devices could be touched.
The inverter can be restarted after removing the faults, which may affect its safety performance.
No maintenance parts exist in the inverter. If any maintenance service is required, please contact
our after-sales service personnel.
WARNING
Do NOT touch or open the shell after the inverter is powered off within ten minutes.
10. Safety cautions for inverter maintenance
Testing equipment is recommended to check the inverter without voltage or current;
When conducting electrical connection and maintenance work, post temporary warning signs or put
up barriers to prevent unrelated personnel from entering the electrical connection or maintenance
area.
Improper maintenance operation to the inverter may cause personal injury or equipment damage.
Please wear an anti-static wrist strap to prevent static damage or avoid unnecessary contact with
the circuit board.

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1 Overview
Based on a full-digital intelligent technology, the NPower series is a pure sine wave inverter, converting
12/24/48V DC power to 220/230V AC power. With advanced SPWM technology, voltage-current double
closed-loop control, and completely isolated inverter technology, the NPower has high-quality electrical
parameters and a stronger ability to resist impact load. The input terminal's surge prevention helps meet
the lithium battery's special requirements and ensures the inverter's safety and reliability.
The cage is designed with a galvanized board of high strength and corrosion resistance.
With high reliability, high efficiency, complete protection function, easy installation and operation, the
inverter is suitable for AC loads of household appliances, power tools, industrial equipment, electronic
audio and video, and solar PV power generation system(such as vehicle inverter application, solar RV,
solar household, solar yacht, and solar power station, etc.)
Features：
Advanced SPWM technology and pure sine wave output
Full digital double closed-loop control to enhance the load capacity
Completely isolated inverter technology for the input and output
Anti-surge design to support the lithium battery system perfectly
Lower output harmonic distortion(THD≤3%)
Excellent EMC design for the AC output to prevent interference of connected equipment
Selectable output voltage(220/230VAC) and frequency(50/60Hz) by the DIP switch
Extensive protection: input reverse polarity, input over voltage, input low voltage, output overload,
output short circuit, and overheating
Remote control and monitor the inverter by APP or PC software
Configurable input under voltage and input under voltage reconnect voltage via the APP or PC
software
Set the inverter's ID via theAPP or PC software to monitor several inverters.
Adopt a Galvanized board of high strength and strong corrosion resistance for the cage
Selectable output terminal: Chinese dual-socket, Australia/New Zealand, European, Universal, and
Terminal
Display running status by the local device(only NP4000-22(T) and NP5000-42(T)), optional external
remote meter
Easy maintenance and repair

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2 Characteristics
NP260~NP1200
NP1500~NP3500, NP4000-42(T)

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NP4000-22(T), NP5000-42(T)
❶
Ventilation fan (1)
❽
Mode switch(3)
❷
Handle
❾
RS485 communication port(4)
❸
DC input terminal positive
❿
Working indicator(green)(5)
❹
DC input terminal negative
⓫
Fault indicator(red)(5)
❺
AC outlet(2)
⓬
Grounding terminal
❻
External switch connection point
⓭
Mounting hole size
❼
AC output switch
(1) Ventilation fan
The cooling fan will be automatically turned on if the inverter could reach any condition down below.
1) Heat sink temperature is higher than 45℃
2) Internal temperature is higher than 45℃

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3) The output power is higher than the same power，see the below table:
Models
Instruction
NP260-11(M/N/T); NP260-12(X);
NP260-21(M/N/T); NP260-22(X);
NP400-12(X); NP400-22(X);
NP600-11(N); NP600-12(X);
NP600-21(M/N/T); NP600-22(X);
NP800-12(X); NP1000-11(N);
NP1000-21(N); NP1000-22(X);
NP1000-41(M/N/T); NP1000-42(X);
NP1200-12(X); NP1200-22(X);
NP2500-11(T); NP2500-21(T);
NP2500-41(T)
Internal temperature is higher than 10℃, and the
output power is higher than half of the continuous
output power.
NP1500-12(T); NP1500-22(T);
NP2000-11(T); NP2000-12(T);
NP2000-21(T); NP2000-22(T);
NP2000-41(T); NP2000-42(T);
NP2500-12(T); NP2500-22(T);
NP2500-42(T);
NP3000-22(T); NP3000-42(T);
NP3500-42(T);
NP4000-22(T);
NP5000-42(T)
Internal temperature is higher than 10℃, and the
output power is higher than 1000W
NP4000-42(T)
Internal temperature is higher than 10℃, and the
output power is higher than 2000W
Products marked with "X" support four AC outlets: A-Australia/New Zealand, E-European,
C-Chinese dual-socket, and M-Universal.
Products marked with "T" mean the AC outlet support terminal only.
Products marked with "N" mean the AC outlet support North America only.
The cooling fan will be automatically turned off when the inverter reaches all the conditions down
below.
1) Heat sink temperature is lower than40℃
2) Internal temperature is lower than 40℃
3) The output power is lower than the same power，see the below table:
Models
Instruction
NP260-11(M/N/T); NP260-12(X);
NP260-21(M/N/T); NP260-22(X)
The output power is lower than 80W

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NP400-12(X); NP400-22(X)
The output power is lower than 150W
NP600-11(N); NP600-12(X);
NP600-21(M/N/T); NP600-22(X)
The output power is lower than 200W
NP800-12(X);
NP1000-11(N); NP1000-21(N);
NP1000-41(M/N/T); NP1000-42(X)
The output power is lower than 300W
NP1000-22(X)
The output power is lower than 400W
NP1200-12(X); NP1200-22(X)
The output power is lower than 500W
NP2000-11(T); NP2000-21(T);
NP2000-41(T)
The output power is lower than 600W
NP2500-11(T); NP2500-21(T);
NP2500-41(T)
The output power is lower than 750W
NP1500-12(T); NP1500-22(T);
NP2000-12(T); NP2000-22(T);
NP2000-42(T); NP2500-12(T);
NP2500-22(T); NP2500-42(T);
NP3000-22(T); NP3000-42(T);
NP3500-42(T); NP4000-22(T);
NP5000-42(T)
The output power is lower than 800W
NP4000-42(T)
The output power is lower than 1200W
Products marked with "X" support four AC outlets: A-Australia/New Zealand, E-European,
C-Chinese dual-socket, and M-Universal.
Products marked with "T" mean the AC outlet support terminal only.
Products marked with "N" mean the AC outlet support North America only.
(2) AC outlet
Universal Chinese dual-socket

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Australia/New Zealand European
Terminal North America
(3) Mode switch
When the switch of number 1 is on the 230V side, the output voltage is 230VAC; otherwise, it is
220VAC.
When the switch of number 2 is on the 60Hz side, the output frequency is 60Hz; otherwise, it is 50Hz.
WARNING
DO NOT turn ON/OFF the mode switch when the inverter is working.
CAUTION
Both the output frequency and voltage change are available after restarting the
inverter.
(4) RS485 communication port
The RJ45 port pin definition is shown below:
1
5VDC
5
RS-485-A
2
5VDC
6
RS-485-A
3
RS-485-B
7
GND
4
RS-485-B
8
GND

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(5) LED indicator and buzzer
Working indicator
Fault indicator
Buzzer
Status
Green super flashing
Red off
No beeps
Standby
Green on solid
Red off
No beeps
Output is normal
Green slowly flashing
Red off
Beeps
Input under voltage
Green fast flashing
Red off
Beeps
Input over voltage
Green on solid
Red on solid
Beeps
Over temperature
Green off
Red fast flashing
Beeps
load short circuit
Green on solid
Red slowly flashing
Beeps
Overload
Green off
Red off
Beeps
Output voltage
abnormal

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3 Naming rule
Models
Rated input voltage
Output power
Rated output voltage
NP260-11(M/N/T)
12VDC
260W
110/120VAC
NP260-21(M/N/T)
24VDC
NP600-11(N)
12VDC
600W
NP600-21(M/N/T)
24VDC
NP1000-11(N)
12VDC
1000W
NP1000-21(N)
24VDC
NP1000-41(M/N/T)
48VDC
NP2000-11(T)
12VDC
2000W
NP2000-21(T)
24VDC
NP2000-41(T)
48VDC
NP2500-11(T)
12VDC
2500W
NP2500-21(T)
24VDC
NP2500-41(T)
48VDC
NP260-12(X)
12VDC
260W
220/230VAC
NP260-22(X)
24VDC
NP400-12(X)
12VDC
400W
NP400-22(X)
24VDC
NP600-12(X)
12VDC
600W
NP600-22(X)
24VDC
NP800-12(X)
12VDC
800W
NP1000-22(X)
24VDC
1000W
NP1000-42(X)
48VDC
NP1200-12(X)
12VDC
1200W
NP1200-22(X)
24VDC
NP1500-12(T)
12VDC
1500W
NP1500-22(T)
24VDC

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NP2000-12(T)
12VDC
2000W
NP2000-22(T)
24VDC
NP2000-42(T)
48VDC
NP2500-12(T)
12VDC
2500W
NP2500-22(T)
24VDC
NP2500-42(T)
48VDC
NP3000-22(T)
24VDC
3000W
NP3000-42(T)
48VDC
NP3500-42(T)
48VDC
3500W
NP4000-22(T)
24VDC
4000W
NP4000-42(T)
48VDC
NP5000-42(T)
48VDC
5000W
Products marked with "X" support four AC outlets: A-Australia/New Zealand, E-European,
C-Chinese dual-socket, and M-Universal.
Products marked with "T" mean the AC outlet support terminal only.
Products marked with "N" mean the AC outlet support North America only.

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4 Connection diagram
NP260~NP1200
NP1500~NP3500, NP4000-42(T)

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NP4000-22(T), NP5000-42(T)
CAUTION
Connect the DC input directly to the battery port is recommended. DO NOT connect
to the battery terminal of the controller. Otherwise, the charging frequency spikes of
the controller may lead to over-voltage protection of the inverter.

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5 Remote meter(Optional)
5.1 Appearance
❶
LCD
❹
Working status indicator(Blue)
❷
UP/Setting button
❺
DOWN/Enter button
Output ON/OFF button
❸
Fault indicator(red)
❻
Fixing screws
5.2 Status display
Working status indicator
Fault indicator
Buzzer
Status
Blue ON solid
Red OFF
No beeps
Output voltage
normal
Blue slowly flashing(1/4Hz)
Red OFF
Buzzer beeps
Input under voltage
Blue fast flashing (1Hz)
Red OFF
Buzzer beeps
Input over voltage
Blue OFF
Red ON solid
Buzzer beeps
Inverter over
temperature
Heat sink over
temperature
Blue OFF
Red fast flashing
(1Hz)
Buzzer beeps
Load short circuit
Blue ON solid
Red slowly
flashing(1/4Hz)
Buzzer beeps
Overload
Blue OFF
Red OFF
Buzzer beeps
Output voltage
abnormal

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5.3 Buttons
Click
Move up
Press for 2s
In the real-time interface, press it for 2s to enter the
setting interface.
In the setting interface, press it for 2s to enter the
parameters configuration interface.
Click
Move down
Press for 2s
In the real-time interface, press it to turn on/off the load
output (default ON)
Confirm the settings
+
Click
In the setting interface, click them to exit the parameters
configuration interface.
Press for 2s
In the real-time interface, press them for 2s to clear the
faults.
CAUTION
The long buzzer beeps for the parameter confirming and short beeps for other button
operations.
5.4 LCD interface
Click or to browse the real-time interface.
5.5 Settings
Operation:
Step1: In the real-time interface, press for 2s to enter the setting interface.
Step2: Click or to select the parameter to be configured.
Step3: Press for 2s to enter the configuration interface of the specified parameter.
Step4: Click or to configure the parameter value.
Step5: Press for 2s to confirm the configuration.
Step6: Click + to exit the current interface.
Display
Parameters
Default
User define
Output voltage class①
220VAC
220VAC/ 230Vac