SUVPR NK-GP1500 User manual

Shenzhen Huangjintai Electronic Co., Ltd
Issue date: Nov.16,2012
Off-Grid Solar Inverter with Controller
User’s Manual
NK-GP1500

NK-GP1500 User’s Manual 2
Shenzhen Huangjintai Electronic Co.Ltd 11/16/2012
Contents
1、 Introduction………………………… 〔3〕
2、 Product components………...…..….〔3〕
3、 Warning…………………………….…〔4〕
4、 Operation Instruction……………..…〔5〕
5、 Technical Parameters…………….....〔6〕
6、 Warranty…………………….…..........〔9〕

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Shenzhen Huangjintai Electronic Co.Ltd 11/16/2012
※ Product Introduction
This off-grid solar system is one the most advanced inverter
integrated with solar controller inside, the output of which is
standard pure sine wave. It adopts CPU control technique and
achieves the free communication between inverter module and
control module. The independent modularization design improves
the reliability and extendibility greatly. This product has various
kinds of functions such as strong shock proof, solar/grid/ battery
complementary, automatically battery charging & monitoring,
auto-selection to the work mode, AVR functions, etc.It can meet
the request of various users.
※ Product Components

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1、AC Indicator light 7、 Air vents
2、Inverting indicator 8、Cooling fan
3、Error indicator 9、 AC Input
4、ON button 10、AC Output
5、OFF button 11、Battery Input terminal
6、LCD display 12、Solar Input terminal
13、RS232 Port 14、Control switch of battery input
As utility power, the AC output of this product has potential
danger. Keep it away from children, use it cautiously, risk of
electrical shock !
Before using your NK-GP1500, read the user's manual
carefully and operate it correctly. Don't expose the inverter in rain,
snow or spray. keep it away from potential source of flammable
fumes,gases or clothing, or it will cause the failure of power
inverter, and even damage your electrical devices or lead to other
unpredictable consequences!
Don't disassemble or refit this unit.The manufacturer will not
be responsible for all consequences caused by the unauthorized
modification!
Although with overvoltage protection, don’t connect this
product with the supply whose voltage exceeds inverter’s rated
voltage, otherwise it will result in permanent damage to this
product.
Handle with care and avoid violent vibration.
The product should be able to operate all AC loads rated at
or below its power rating.

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Shenzhen Huangjintai Electronic Co.Ltd 11/16/2012
※ Operation Instruction
The installer should have knowledge and
experience in stalling electrical equipment
■ Installation Steps
1、 Check and confirm all accessories are included.
2、 Place this equipment at flat and stable platform in a dry &
well-ventilated area. Make sure there is no any obstacle near
the air vents within 50CM.
3、 Select 100AH or above maintenance-free lead-acid battery,
whose rated power is 12V.
4、 Connect the battery and inverter with 16mm2 (or above) cable.
The red cable to positive, and black one to negative. Ensure
the battery connection is solid,.
5、 Plug AC cable's terminal into this product’s AC input port.
Ensure the connection is solid.
6、 Connect the end of the AC cable to the utility grid socket.
7、 Make sure power plug of electricity equiepment connect with
this product’s plug AC output port..
8、 Connect the solar panels to the solar input of this equipment.
The red cable to positive, and black one to negative.Make
sure the connection is solid.
9、check and confirm all connections are correct.
■ Turn On
1、 Press “ON” button, the buzzer beeps one time, meanwhile the
LCD is lighted. The AC indicator light will go out after self
checking with flashing 10 times. After that, the inverting
indicator is on and start working.
2、 If AC input voltage exceeds its rated range, it will switch to
inverter mode automatically.
3、 Introduction to LCD display.

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■ Turn Off
1、Press OFF button, and the equipment will be shut down.
※ Technical Parameters
■ Input Features：
DC voltage range: DC20V-DC31V
Over voltage protection: DC32±1V
Over voltage recovery: DC30±0.5V
Low voltage protection: DC20±1V
Low voltage recovery:DC25±0.5V
AC input voltage:AC145±5V- AC275±5V
AC frequency:Automatically tracking and adaptive
■ Output Features：
AC voltage in AC mode: 220V±10%（AVR function）
Frequency in AC mode: 50Hz±5Hz/60Hz±5Hz
AC voltage in inverter mode: 220V±10%
Frequency in inverter mode: 50Hz±0.5Hz
Output waveform: Purs sine wave
Waveform distortion: ≤5%
Switch time: 4ms
No-load loss:≤20W
Rated power: 1500W
Peak power: 3 times of rated power for 1 second
Transfer efficiency: >85%

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■ Charging Features
Battery type：Maintenance free lead-acid battery
Battery Voltage:24V DC
Charging current:15A
Charing time: 8h ≥90%（80A maintenance free lead-acid battery）
Floating charge voltage: 27.6VDC±0.3V
Over-charge voltage: 28.2V
AC input voltage: 145VAC±5V-275VAC±5V
■ Protection Features
DC low voltage protection: DC20±1V
DC over voltage protection: DC32±1V
Over-heat protection: 90±10℃
AC input low voltage protection: 145VAC±5V
AC input over voltage protection: 275VAC±5V
Short-circuit protection: Flashing and shut down after 1S.
Over-load protection:120% of rated power, restart after 30S
150% of rated power,shut down after 10S
200% of rated power,shut down after 1S
■ Features of Solar Controller
Solar panel input range: DC30V-DC50V
The rated voltage of solar input: DC36V
Rated power of solar solar input: 720W
Floating charge voltage: 27.6V
Charging current: 30A
Charge efficiency:>96%
■ AC/Solar complementary functions:
1、 In AC mode, it can stabilize the output voltage, and
ensure the output is standard pure sine wave. It is
particularly important for the area with problem of voltage
instability.
2、 When there is solar energy, and the battery voltage is
relatively high (to the appointed voltage). This product goes
to the inverter mode intelligently. The solar will provide
power to the load directly and charge to the battery

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meantime. If the solar energy is insufficient, both
the solar energy and battery will supply power to the loads
automatically.
3、 This product is set with low voltage protection for the
battery. If there is solar energy but the battery voltage
drops to the protection voltage, the AC power will supply
power to the load directly but not charge for the battery,
while the solar energy will charge the battery instead.
4、 When the battery voltage is lower than the protection
voltage, this product will switch to AC mode intelligently:
AC will supply power to loads and charge for the battery at
the same time, to ensure the service life of the battery.
5、 This product has automatic identification function. It can
auto switch to PV priority mode during the daytime: the
solar energy will supply power to loads directly and
charge for the battery at the same
time .
At night, it auto switches to AC priority mode: AC will
supply power to the load directly. After self-checking the
battery status, it will choose wether or not charge for the
battery.
■Operating Ambient
Working temperature：-5+40℃
Storage temperature：-15+50℃
Relative humidity：0%-90%, no condensation
Elevation range：0-3000M ( If the altitude ＞1000M, when the
altitude increases by100M, the available
Power will be decreased by 1%.
Storage elevation:0-15000M
■Product Data：
Product Size： 440mm×197mm×385mm
Shell Material: Iron
Color: Cream-Coloured
Product N.W: 21.75kg (with controller)

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Packing size: 505mm×255mm×497mm
QTY/CTN: 1PCS
G.W./CTN: 26.4kg
N.W. Of 30A solar controller: 1.05Kg
■Accessories
AC Cable：1 unit
User’s Manual：2 set
Quality Certificate: 1 pc
Warranty Card ：1pc
※ Warranty
Your NK-GP1500 has one year limited warranty from the date of
purchase. This limited warranty does not cover problems caused
by incorrect operation, self dismantling or modification.
We offer free replacement service to the defective product within 7
days from the date of purchase, except for the force majeure or
non-artificial factors.