Epever NP260 User manual

1
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 ............................................................................... 5
2 Characteristics....................................................................... 7
3 Designations of models.........................................................14
4 Schematic diagram for connections...................................... 16
5 Installation instructions..........................................................18
5.1 General installation notes............................................................18
5.2 Wire size &breaker......................................................................18
5.3 Mounting .....................................................................................20
6 Protection..............................................................................27
7 Troubleshooting.....................................................................30
8 Maintenance..........................................................................31
9 Technical Specifications........................................................ 32
AnnexⅠDisclaimer...................................................................47

1
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 you encounter the following symbols in the
manual.
TIP: Indicates 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.
The entire system should be installed by professional and technical personnel.
2. Requirements for professional and technical personnel
Professionally trained;
Familiar with related safety specification for the electrical system;

2
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 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.

3
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.
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.

4
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 by untrained non-professional or technical personnel.
Once an accident occurs, it must be handled by professional and technical
personnel.Any incorrect operation 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 in the inverter. If any maintenance service is required, please
contact our after-sales service personnel.
Do NOT touch or open the case after the device powered off within ten mins.
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, must 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.
To prevent static damage, please wear an anti-static wrist strap, or avoid unnecessary
contact with the circuit board.

5
1 Overview
Based on a full-digital intelligent technology, the NPower series is a pure sine wave inverter,
which can convert 12/24/48V DC power to 220/230V AC power. With an 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 to meet the lithium battery's
special requirements and ensure 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

6
APP or PC software
Set the inverter's ID via the APP 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

7
2 Characteristics
NP260～NP1200
NP1500～NP3500, NP4000-42(T)

8
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

9
(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℃
3) The output power is higher than the same power，see the below table:
Models
Instruction
NP260-12(X); NP260-22(X)
NP400-12(X); NP400-22(X)
NP600-12(X); NP600-22(X)
NP800-12(X)
NP1000-22(X)
NP1200-12(X); NP1200-22(X)
Internal temperature is higher than 10℃,
and the output power is higher than half of
the continuous output power of 25℃.
NP1500-12(T);NP1500-22(T)
NP2000-12(T);NP2000-22(T);
NP2000-42(T)
NP2500-12(T);NP2500-22(T);
NP2500-41(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
"X" is C-Chinese dual-socket, A-Australia/New Zealand, E-European, M- Universal.
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:

10
Models
Instruction
NP260-12(X); NP260-22(X)
The output power is lower than 80W
NP400-12(X); NP400-22(X)
The output power is lower than 150W
NP600-12(X); NP600-22(X)
The output power is lower than 200W
NP800-12(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
NP1500-12(T);NP1500-22(T)
NP2000-12(T);NP2000-22(T);
NP2000-42(T)
NP2500-12(T);NP2500-22(T);
NP2500-41(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
"X" is C-Chinese dual-socket, A-Australia/New Zealand, E-European, M- Universal.
(2) AC outlet
Universal:

11
Chinese dual-socket:
Australia/New Zealand:
European:

12
Terminal:
(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.
Both the output frequency and voltage change availability after restarting the
inverter.
DO NOT turn ON/OFF the mode switch when the inverter is working.
(4) RS485 communication port

13
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
(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

14
3 Designations of models
Models
Input rated voltage
Output
power
Output rated
voltage
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
NP1200-12(X)
12VDC
1200W
NP1200-22(X)
24VDC
NP1500-12(T)
12VDC
1500W
NP1500-22(T)
24VDC
NP2000-12(T)
12VDC
2000W
NP2000-22(T)
24VDC
NP2000-42(T)
48VDC
NP2500-12(T)
12VDC
2500W
NP2500-22(T)
24VDC
NP2500-41(T)
48VDC
NP2500-42(T)
48VDC
NP3000-22(T)
24VDC
3000W

15
NP3000-42(T)
48VDC
NP3500-42(T)
48VDC
3500W
NP4000-22(T)
24VDC
4000W
NP4000-42(T)
48VDC
4000W
NP5000-42(T)
48VDC
5000W
"X" is C-Chinese dual-socket, A-Australia/New Zealand, E-European, M- Universal.

16
4 Schematic diagram for connections
NP260～NP1200
NP1500～NP3500, NP4000-42(T)