BP series pure sine wave inverter 300W 110VDC 220VAC
1. Inverter broke down without output after long-time running;
2. Inverter was used in subway tunnel for a long time.
Analysis of the possibility of the cause
Runtime environment is terrible. Damp and dusty subway tunnel makes PCB board covered with thick soppy dust.
1. Damp air partially short circuited PCB board, damaging components;
2. Thick dust weakened heat dissipation, damaging components.
1. Pay attention to runtime environment, it would be better to place inverter in surroundings with lower moisture and less dust;
2. If the surroundings cannot be improved, please put inverter into three protection and distribution box or similar box with good heat dissipation.
BP series pure sine wave inverter 3000W 48VDC 220VAC
1. Input voltage is 48V, under light condition and with no load;
2. In above state, trouble light is on and buzzer keeps alarming.
Analysis of the possibility of the cause
According to description, the possible reasons are:
1. DC voltage is low or at a critical point, so the inverter cannot be started;
2. Components is void-welding so poor cotact occurs and the inverter cannot be started normally after transportation;
3. The customer started the inverter with high power load which leads to the damage of MOS tube. And did not truthfully report the situation.
According to reason analysis, if the inverter could start after higher the input voltage, the trouble reason is the first.
PS
BP series starting voltage:
DC12V, starting voltage≥13V；
DC24V, starting voltage≥25V；
DC48V, starting voltage≥49V.
BP series pure sine wave inverter 3000W 24VDC 220VAC
1. Input DC 23V, Output AC221V, with 3.8A output current of two way load.
2. Two of the three way loads can run normally. After the three-circuit load is fully opened, it will report a fault and stop output after about 10s.
3. The back load is equipped with a lightning arrester. After removing the arrester on site, re-test, the fault is still consistent with the description of No. 2.
4. The front DC power supplies power to the direct current cabinet. The customer did not provide any relevant data, means that the power is sufficient.
5. Due to project reasons, it is not allowed to dismantle the installed inverter or send it back.
6. After replacing a new inverter, the same situation still occurs.
Analysis of the possibility of the cause
According to the above description, the voltage and current of the input and output terminals are normal, and there is no overload. The possible cause analysis:
1.When two of the back-end loads are in conflict with each other, such as a short circuit, the three loads will be all turned on, and the output will stop.
2.The input power of the front power supply is insufficient, when the three loads are started at the same time, the front power supply is insufficient, which causes the stop of output.
1.Check the condition of back load circuit, whether there is short circuit, grounding, etc.or not.
2.Check and measure the actual power of the front power supply.
3.Remove the inverter and directly carry a sufficient load to test whether the inverter itself is normal or not.
BP series pure sine wave inverter 2000W 12VDC 220VAC
No output after using for 2-3 months, red and blue light are on at same time.
Analysis of the possibility of the cause
1.The ambient temperature and humidity of the inverter is very high, because the BP series are equipped with fans, some particles with trace amounts of water will be sucked into the inverter, resulting in damage to the components in the inverter because of a short circuit of the CPU.
2. If it is installed on a car, especially in the engine compartment or beside the battery compartment of a large truck, the ambient temperature around the inverter is high and water is easy to enter. The inverter is an electronic product and does not have the waterproof function. , As long as water enters the inverter, a short circuit will occur, resulting in damage of the inverter.
3.For items with chemical components in the operating environment, if the inverter is installed too close, or the water inlet happens to heavy salt water entering for a long time, it will cause the PCB board to become moldy or salt spray crystals, which will lead to short circuit and damage.
DC input part and AC output part mosfet broken.
Replace damaged components.
HeliosII-485MCP off grid solar inverter
inverter no vac output and the error code is DCBUS-L.
1.customer connected on the output other voltage engine generstor
As illustrated in above image, the place marked by red box is the actual location of IPM module.
The four points within the red ellipse are the points we need to measure.
Measurement procedures: measure IPM module-using multimeter,
and discharge white capacitance at first.
1.Use black probe to connect 0 point, and use red probe to connect 1, 2, 3 point respectively.
The value of measurement should be more than 500 normally.
2. Change black probe and red probe connection points.
Use red probe to connect 0 point, and connect 1, 2, 3 point
using black probe respectively. The value should be 1 under
normal condition as shown below, in another words,
exceeding multimeter’s measurement range.
If check all display 0V, means AC output part Mosfet(IPM Module) damaged.
2. change the Mosfet
BP series pure sine wave inverter 2500W 24VDC 220VAC
The inverter did not output and had smell of burnt. After opening, DC input part MOS tube and fuse exploded, and DC input control board was damaged.
Mostly the battery was connected oppositely.
Cannot be repaired.
BP series pure sine wave inverter/ BPlus Series pure sine wave inverter/ Helios II Series off grid solar inverter
AC output part MOS tube/ IGBT module exploded. AC output part driver board, corresponding resistances and PCB board were damaged.
AC output was connected with grid.
Change MOS tube/IGBT module, AC output part driver board, damaged resistances and PCB board.
BP series pure sine wave inverter/ BPlus Series pure sine wave inverter/ Helios II Series off grid solar inverter
The inverter still ran even after short circuit because of a full load in AC output, which damaged AC output part MOS tube.
The inverter still overloaded after short circuit/overload.
Change MOS tube.
PS:
If it is serious, MOS tube will explode as the image shows.
BP series pure sine wave inverter/ BPlus Series pure sine wave inverter/ Helios II Series off grid solar inverter
If the input voltage of battery exceeded defult value, capacitance will bulge/explode and further damage DC input part MOS tube.
The input voltage of DC battery was too high.
Change capacitance and MOS tube.
(Helios II Series)
PS: Battery voltage of all models of inverter should not exceed values below:
B12P--15.5V、B24P--31V、B48P--62V
BP series pure sine wave inverter
The battery was connected oppositely, leading to blowout of fuse and damage of AC output part MOS tube.
The positive and negative pole of DC battery was connected oppositely.
Change fuse and MOS tube.
BP series pure sine wave inverter 1000W 12VDC 220VAC
Red and blue lights come on after startup. The machine has no output and the battery voltage is 12.7V.
The battery is short of voltage, thus the machine cannot start up.
Increase input battery voltage.
BPlus series pure sine wave inverter 300W 12VDC 220VAC
The inverter can be started up but its output voltage is unsteady.
R18 resistance in bus voltage has been damaged, the transient current is too large so the back end shortcircuits.
Change R18 resistance.
BP series pure sine wave inverter 600W 12VDC 220VAC
Cannot start the inverter up. Part components of the internal circuit board rusts.
Water has got into the inverter or it was used in extremely humid surroundings. Both front-end and back-end MOS tubes have been damaged.
Deliver it back to factory to take a complete inspection.
BP series pure sine wave inverter 2000W 48VDC 220VAC
Front-end MOS tube and fuse exploded.
Positive and negative of the battery power is opposite
Or Battery voltage is too high
Deliver it back to factory to take a complete inspection.
BP series pure sine wave inverter 6000W 48VDC 110VAC
The inverter is normal after being struck by lightning, but its buzzer keeps buzzing.
1. N3/R43 is damaged
2. breakover/short circuit
solution 1:
1. Remove all wire from BP series with charge, include battery and AC output.
2. Clear surface dust.
3. Uninstall screws from Front and rear panels.
4. Open the top cover.
5. Find the damaged parts.
6. Change U3, N6 parts.
7. Close the top cover and run it.
solution 2:
1. Remove all wire from BP series with charge, include battery and AC output.
2. Clear surface dust.
3. Uninstall screws from Front and rear panels.
4. Open the top cover.
5. Find the damaged parts.
6. remove the buzzer.
7. Close the top cover and run it.
BP series pure sine wave inverter 12v 6000w
The device fails and stops outputting in seconds after running with load.
Specific Performance: Inverter's front end has been connected with 5 batteries (aged batteries after using many years) in parallel, and its back end loads with electric welding machine. If welding machine's current is set as 176A, inverter can work normally, but if the current is 200A, the inverter fails to output.
1. Battery has aged so that its output is unsteady. (Customers did not measure battery's voltage in adavance.)
2. Output overloads. (200A output current of electric welding machine has beyond inverter's 6000W rated power.)
Inverter is normal but misused.
Replace the battery or reduce the load.
BP series with charge pure sine wave inverter 12v 2000w
Charging current soars to 14A or even more.
This phenomenon is normal. Over-discharge causes the voltage of battery too low, so the charging current is higher than default value.
Inverter is normal.
The cooling fan rotates slowly when only connected with mains supply, but rotates normally after being connected with mains supply and turning its switch on.
The switch has not been controlled entirely by the control part of the cooling fan. There is something wrong with U3 optocoupler and N6 triode.
1. Remove all wire from BP series with charge, include battery and AC output.
2. Clear surface dust.
3. Uninstall screws from Front and rear panels.
4. Open the top cover.
5. Find the damaged parts.
6. Change U3, N6 parts.
7. Close the top cover and run it.
change the parameter for Muse series MPPT solar charge controller by PC software( widnows 10)
Battery type | Over voltage(%) | Over voltage value |
Lead-Acid | 120% | 57.6V |
Lithium | 114.1% | 54.7V |
Nicad | 111.0% | 53.3V |
Ni-metal | 121.7% | 58.4V |
User-Custom | 100%-125% | 48V-60V |
1.Different batteries have different over-voltage protection values. If the over-voltage values to high ,
than the battery will broken, so must select the correct battery type.
2. The Muse series MPPT solar charge controller are damaged
If theMuse series MPPT solar charge controller have damage, need remove the controller asap, because the PV voltage will direct to
battery, is very high voltage, than battery will damage.
Accessories required: tablet computer *1, RJ45 communication line *1, USB to RJ45*1
RJ45 communication line USB to RJ45
RJ45 communication line connected to the RJ45 interface RJ45 line connected to 485 interface of the Muse Mppt solar charge controller
The USB port connects to the computer(windows 10)
Open the software "CNBOU" app
Click "Open file" and select "cnbou_mbt.xls"
Select Port COM
Click "Write Target" to bring up the bar code dialog box and click skip
Popup please replace the target, operation completed, restart the controller
Now the Muse series MPPT solar charge controller finish the parameter reset.
Chinese and English interface comparison
DC or Battery input Reverse solution for Pure sine wave inverter B24P600-2
Product and model: BP series Pure sine wave inverter/B24P600-2
Fault description：Inverter running , LED lights off . AC output no power.
Causes：DC or Battery Input Reverse
Solution and step:
1. Remove all wire from Pure sine wave inverter, include battery and AC output.
2.Clear surface dust
3.Uninstall screws from Front and rear panels
4.Open the top cover
5.Dial out the fuse
6.Check and replace bad fuses
7.Close and complete
BP series 600W vehicle inverter
