Grid Tied TE-300W-WV User manual

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TE- 300/500W –WV Series Inverters
User Manual

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SystemFunction
zDisplay function
1、AC voltage display
When the 125VAC LED lit up, it means the AC output is 125V.
When the 230VAC LED lit up, it means the AC output is 230V.
2、Outage display
When the Fault LED lit up, is means there is no electricity or the output is fail, and the inverter restart.
3、Power shows
Power output LED: The 5 red LEDS take turns lighting, the quicker the lights move, the more power output.
4、AC frequency display
When the 50Hz LED lit up, it means the input frequency is 50Hz.
When the 60Hz LED lit up, it means the input frequency is 60Hz.
5、DC over-voltage display
When the Fault LED and the “HIGH” LED lit up, it means the DC input is over 62VDC
6、DC under- voltage display
When the Fault LED and the “LOW” LED lit up, it means the DC input is low 22VDC.
7、Power adjust display
1) When “ST” LED flashing, it means power is in adjusting condition.
a. When the “ST” LED and “HIGH” LED lit up, it means the power is increase.
b. When the “ST” LED and “LOW” LED lit up, it means the power is decrease.
2) When “ST” LED long on time, is means the power is locked, and the inverter works.
z6-grade power search
In overcast weather,the solar battery’s output current is extremely tiny, then inverter will automatic open
6-grade power search function.
2、The program can automatically open power adjustment for 6 times.
3、The current direction can adjust from the maximum to the minimum.
4、In automatic adjustment process, we will see the LOW light flashing.And the power will keep as a
starting point, from 0 to the maximum output power, and it will restart at most for 6 times, then locked
in the maximum power, the ST lamp long bright.
5、It need 10 minutes for 6-grade power search.
zWide voltage input(22-60VDC）
Achieve wide voltage input.
1、DC voltage input：22-60VDC
2、Second level power variable voltage conversion
zHigh-frequency two-way and one-way grid function
1、High frequency direct modulation, AC half wave synthesis
2、Two-way grid means: Load consume directly. And can reverse AC current transmission.
3、One-way grid means: Load consume directly. And banned reverse AC current transmission.
zKinds of frequency output function.
It can apply to 50Hz and 60Hz frequency of AC.
Frequency range: 45Hz ~53Hz/55Hz~ 63Hz
zdirectly connected to the solar panels (do not need to connect the battery)
Using precise Dynamic differential pressure type MPPT function, APL functions, the inverter automatically
adjust the solar panels of maximum output power，simply connect the solar panel to the grid inverters. Do not
need to connect the battery.
1、Differential pressure type MPPT: 0.1 V accuracy

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2、Power lock: 10W (AC output)
zAC 0 angle with high precision auto-detection
AC phase angle of 0 through isolation amplifier then input to the MCU for high-precision detection and analysis.
The phase shift rate is less than 1%, thus achieve high-precision with phase modulation AC output together.
1、AC phase shift: < 1%
2、Over-zero protection: 0.2 VAC
3、AC switching: 50Hz / 60Hz
Synchronous High-frequency Modulation
In the process of the grid, usually adapt the same phase angle in parallel. (ie, When the two-phase alternating
current total is equal to 0.Use switch to combination the two AC fusion) and the product is rectified AC
half-frequency AC to 100Hz first, then the machine use the high frequency current in the circuit and
semi-100Hz frequency alternating current generated combination, to achieve high-frequency modulation.
1、Modulation synthesis: half wave and full-bridge modulation synthesis (100Hz / 120Hz)
2、Synthetic way: MOSFET full-bridge
3、High frequency: 50KHz
Pure Sine Wave Output
Use SPWM directly to make pure sine wave output.
1、Output waveform: Adopt complementary PWM to push-pull pure sine wave.
2、Generate means: enhancement-mode SPWM
zAutomatic Sensing Function Solar Luminosity
Use the latest luminosity perception operation technology. The different illuminate angle and intensity of the
solar panel will produce different current output. Use advanced CPU to operate the different illuminance and the
data can be directly displayed on the LCD. Then you can visually see the sense of the strength of the sun unit.
Used more convenient.
1、Luminosity sampling point ：power sampling point
2、High precisionAD sampling: integral AD sampling method
PowerAutomatically Locked (APL)
In different current fluctuations, we should use the MPPT function. When the MPPT function adjusted to the
maximum power point, the product automatically powers locked in maximum power point, then made the
output power more stable.
1、Power lock: The biggest sampling point of MPPT.
Automatically Adapt To Different Load Power Factor
Adapt to any of the power load.
zConstant Current, Constant Power
This product is constant current, constant output power, without any overload, over-current phenomenon.
zAutomatically Shut Down When The Power Output Of a Fault
When the city power system is in failure, the inverter will automatically turn off the output.
Current Limit Protection
Current limit
zStack Multiple Machines
zMultiple small power inverters in parallel can achieve large output power.
zHigh-Frequency High Conversion Rate
Adapt high frequency converter, the output more efficient.
Maximum Power Point Tracking (MPPT)
Because the current intensity and the voltage changes at any time, if there is no power point tracking, there
will be a lot of problems. In the past time, usually adopt a solar controller, but this product uses high-precision

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MPPT operation power, automatic and immediate adjust the solar panels output power at the maximum output
point, then achieve a stable output purposes.
MPPT is for short of " Maximum Power Point Tracking". It means the controller can sense the voltage of the
solar panels on time, and can track the highest voltage and current (VI).Then made the inverter discharge to
power grid with the highest efficiency.
The peak voltage (Vpp) of the solar panels is about 19.5V when it in factory. And the environment
temperature is 25 ° C. The reason of setting this temperature(interestingly, different from the subjective
imagination, we ordinary people the conclusion may let us surprised) is that when the weather is very
hot, solar panels’ peak voltage will fall to about 17.5 V while in cold weather, the peak voltage can
achieve 20.8 V.
Now we back to contrast the difference of MPPT solar energy grid inverter and traditional inverter.
The traditional solar inverter is a bit like the manual gearbox. When the engine speed increase, while
the gearbox gear don't increase at the same time, it will definitely affect the speed of the car. For
traditional inverter speaking, the parameter output power is been set in factory. It likes a car have been
fixed set on fixed 1 gears, no matter how powerfully you trample accelerator, the speed of a car is
limited. While have the MPPT function it will be different, it is automatically. It will automatically adjust
the gears according to the engine’ speed, so it can make cars in the most gears in a reasonable
efficiency standard operation. It means the MPPT controller can track the maximum power point of solar
panels in real-time then express the biggest efficiency of solar panels. The higher the voltage, the more
power can be output through the MPPT. Thus improve the charging efficiency. Theoretically speaking,
using MPPT, the efficiency can be increased by 50% compared with the traditional inverter. But due to
environmental impact and various around energy loss, the ultimate efficiency can improve 20%-30%
according to our actual testing.
ParameterTable
KD-WVC Grid-series models 300Watt 500Watt
Recommend use solar panels 400Wp 600Wp
DC MAX input current 20A 40A
AC MAX output power 300Watt 500Watt
DC MAX Open-circuit
input-voltage
100VDC
DC input voltage range 22~60VDC
MAX output power factor 0.99
DC input Reverse voltage protection FUSE
AC output voltage range （120V versions：90~140VAC）（230V versions：180~260VAC）
AC frequency range 45-53Hz/55-63Hz
Output current total
harmonic distortion
THDIAC <5%
AC Phase <0.5%
Islanding protection VAC；f AC
Output short circuit protection Current-limiting
Show LED mode：power instruction；voltage instruction；AC frequency instruction；over-voltage
instruction

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Installation Wall hanging
Cooling Fan
Communication way z60KHz modulation，power line carrier-current communication
Standby Power <1W
Night Power <1W
Ambient temperature range -25 ℃~60℃
Humidity 0~99%(Indoor Type Design)
Waterproof Indoor Type Design
Electromagnetic Compatibility EN50081.part1 EN50082.part1
Power System Disturbance EN61000-3-2 EN60950-1
Network test DIN VDE 1026
Packingandweight
UserGuide
1、Installation Connection
1、Red terminal: Connect DC positive, black terminal: Connect DC negative. Show in Figure 1.
Figure 1
2、AC socket: Connect to the mains. Put the side of the AC cord which has holes into the inverter with
3 foot outlet and the other side of the AC cord to home 3PIN AC outlet. Show in Figure 2.
Figure2 Figure3
N.W(Each inverter) 1.3KG（300W/500W）
G.W(Each inverter) 1.8KG（300W/500W）
Each inverter size (L x W x H) 21 x 16.5 x5.3CM
Inner carton size(L x W x H) 30x20.3x11.3CM
Master carton size(L x W x H) 42x31.5x36.5CM(6 pieces/carton)
N.W(Outer packing) 10.8KG(300W/500W )
G.W(Outer packing) 11.5KG(300W/500W )
AC power cord length 1.8M

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3、Switch: Connect the connections in right way, then turn on the switch. The inverter starts to work.
3、Stack using
In order to achieve higher power use requirements, this product can be stacked, such as: 4 grid inverter1000W
stacking can achieve 4000W.And the number of the stacking is unlimited. Used as shown in Figure 6:
Figure 6
4、Input and output

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1、DC input limit
Input voltage range: 22V to 60V
Solar Panel: Recommend using the power more than 30W.
1）Reference voltage is 18V’s solar panel. Suggest using two pieces of solar panel in series.
2）Reference voltage is 36V’s solar panel.
3）Reference voltage is 48V’s solar panel.
Recommend using multiple solar panels. Solar panel in series will result in high-input voltage which
will exceed the working voltage range of the inverter.
Wind turbine system: Rated voltage 24VDC, maximum voltage 48VDC.
2、AC output：
Voltage range of the inverter whose output is 220V AC.: 180V - 260V，50HZ
Voltage range of the inverter whose output is 110V AC.: 90V - 140V，60HZ
Notes
---Non-professionals do not disassemble. Only qualified personnel may repair this product.
---Please install inverter in the low humidity and well-ventilated place to avoid the inverter over-heating,
and clear around the inflammable and explosive materials.
---When using this product, avoid children touching, playing, to avoid electric shock.
---Recommended Maximum DC input 4AWG cable capable of handling more than 50A of the
cable size.
---Optimal length of the DC input line 8M or less, long cable will allow solar panels to the inverter
DC voltage drop caused by wear and tear.
---Connected to a power outlet to provide AC.
---Connected solar panels, battery or wind generators DC input DC power supply cable.
---Proposed wind power plant with its own charge controller and load dump.
Accessories for product
One standard AC wire
One user manual