What's the difference between HF(high frequency) inverter and LF(low frequency) inverter?

What's the difference between HF(high frequency) inverter and LF(low frequency) inverter?

What is the difference between (PI)modified sine wave inverter and (PSW)pure sine wave inverter?

What is the difference between (PI)modified sine wave inverter and (PSW)pure sine wave inverter?

Modified Sine Wave Inverter: If your equipment can accept some voltage fluctuation, consider a modified sine wave inverter. These inverters provide mobile power at a more affordable price and come in a full range of sizes. 

Pure Sine Wave Inverter: If you want to run your equipment exactly to the manufacturer's specifications, choose a true sine wave inverter. With true sine wave, motor loads start easier and run cooler. Some equipment only operate properly with true sine wave power—laser printers, variable speed motors and digital clocks. Waveform is an important consideration when choosing an inverter. sine wave inverters provide premium power that is identical to or even better than power supplied by your utility company. Modified sine wave inverters provide good performance at a great value.

Fault Analysis and Detection Methods on Defective Pure Sine Wave Inverter?

Fault Analysis and Detection Methods on Defective Pure Sine Wave Inverter?

The following six situations are normal:

1. turn on: when turn on the inverter, the buzzer will beep once, red led light on for a few second, then green light keeps on.

2. low input voltage alarm:  when the input voltage is lower than 11.0V±0.5V, the buzzer will beep twice, at this time, the green light keeps on like when turn it on, the output is normal, the inverer can work.

3. low input voltage protection: when the input voltage is lower than 10.5V±0.5V, the buzzer will beep three times, at this time, the inverter off AC output and the red light on.

4. over input voltage protection: when the input voltage is over than 15V±0.5V, the buzzer will beep four times, at this time, the inverter off AC output and the red light on.

5. temperature protection: when the temperature of the inverter is over 45℃±5℃, the cooling fan will run; when the temperature is over 80℃±5℃, the buzzer will beep five times. at this time, the inverter off AC output and the red light on, the fan will keep running.

6. over load protection: when the inverter is with load, the buzzer will keep beep for about 10times constantly, the green light is still on, when the beeps stop, the red light will be on, about after 8seconds the inverter will restart again. Sometimes both the red and green light on, low input voltage, but without alarm.

Need to open the inverter to check the inside circuit boars when has the following situations:

1. red light off, green light on, without output:

a. check the output socket to see if there has any loosing connections.

b. check the IC on the C1 board near the AC side to see if there has any IC is not tightly connected, check the 15V power supply on the C1 board to see if it is normal, if yes, then tru to replace the crystal on the C1 board.

2. green light off, red light on. If alarms, then need to check as the above situations; if not alarm, then need to check the followings:

a. check the mosfet on the DC side(RU4099 on 12v type, and 05CN10 on 24v type), and their corresponding diode(P6KE39A on 12v type, and P6KE75A on 24v type), and also check the 10 ohm resistor.

b. check the mosfet on the AC side(IRFP4232,G80N60 on 110v item, G40N60, G80N60 on 220v item), if they are burnt, then need to check their corresponding 2.2 ohm resistor and diode 1N4148, also the IC（IR2110 or IR2113）on the C1 board.

c. if there has short circuit when connected the battery but not turn on, then there has damage on the  mosfet on the DC side(RU4099 on 12v type, and 05CN10 on 24v type) and the diode (P6KE39A on 12v type, and P6KE75A on 24v type), if there has short circuit when connected the battery and turn on, then there has damage on the rectifier diode of the high voltage position.

3. no response on both the red and green light:

a. check if the switch cable is loosing or not, the slot line is tightly plugged or not.

b. check if the DC fuse is disconnected, if yes, then need to check the DC mosfet and the diode on the high voltage position(U8100E, RHRP8120,RHRP1560,RHRP29-06) to see if they are burnt or not.

c. check the two power supply(13V and 15V) on the small DC board are normal or not, whether there has any damaged component.

4. both green light and red light on(or green light on, red light flickers)

a. check of it is over load protection, if yes, then it will alarm as well, and the AC output voltage reduce, because of over load, at this time, need to test with small load. When run inductive load and with air compression type load)the surge maybe about 10-15times), turn on the inverter, the red light will flicker, after about 10seconds, if the output voltage is normal, also it works well when run other load, then the inverter is ok.

b. if the output voltage is normal, the inverter works, then the transistor(SS8050) or other related component broken, this will not affect the use of the inverter.

Fault Analysis and Detection Methods on Defective Modified Power Inverter?

Fault Analysis and Detection Methods on Defective Modified Power Inverter?

Defective modified power inverter have following situations:

One. Red led light, buzzer alarm

1. Undervoltage protection (low voltage protection) over-voltage protection: the operating range of 12V system is 11V-16V, and 24V system is 22V-30V. When the battery voltage is below or above this range, the inverter will not work properly.

2. Temperature protection: the inverter work for a period of time, the temperature of the whole inverter will slowly rise as the temperature rises, the fan of the inverter will first starts, when the temperature of the mosfet rise to 90 degrees, the inverter will be alarm to protect, temperature protection.

3. Overload protection: when the power of the appliance or surge power(any appliance with motor inside has surge power) over the overlaod range of the inverter, the red led will turn on, alarm to protect.

4. Thermistor off: if the thermistor is damaged, the inverter will be red light, and alarm to protect, so when this situation happens, need to use the multimeter and adjust it to DC200V position, and then test the DC input voltage to see if it is in the working range. Also, need to know what is the appliance and the watts of this appliance, with motor or not, what is the working time.

Two. Green light on, abnormal output voltage

AC output voltage, as to 220v item, only shows 140v, as to 110v item, only shows 70v, there are two situations:

1. only one AC fuse got burnt, the corresponding mosfet maybe also got burnt.

2. The waveform of the AC side drive maybe only shows half-waveform, due to the damaged component on the circuit board or the circuit breaker. If the voltage is abnormal, need to check if the AC fuse got burnt, adjust the multimeter to diode position, and then test the mosfet(the black pen touches the second leg, and the red pen touched the third leg), the normal reading is about 380, if the reading is very small or very large, then the mosfet is damaged; at this time, need to test the corresponding resistor, the right reading is 220 ohm.

Three. Green light on, normal voltage when no-load, very low voltage when load. There are two situations:

1. DC fuse maybe got burnt;

2. The PWM signal output shows abnormal on the controll board.

3. Testing method: open the inverter, adjust the multimeter to diode position and then test the DC fuse, if it shows 0, then it is good; if it shows 1, then it is bad, at this time, need to test the corresponding mosfet(the black pen touches the second leg, and the red pen touched the third leg), the normal reading is about 420, if the reading is very small or very large, then the mosfet is damaged; at this time, need to test the corresponding resistor, the right reading is 10 ohm.

Four. No response on the led light, no response when turn on the inverter.

Testing method: open the inverter, check inside to see of there has any loosing connections or any burnt parts; if not, then adjust the multimeter to diode position, and then test the switch to see if it works when it switches to “ON”; then test the 1st leg and the 20^th leg of the CPU on the big board to see it shows 5V.

What need to be noted when use power inverter?

What need to be noted when use power inverter?

Because some appliances have instant power or motor,then when use our power inverter must pay attention for some points as follows:
1)it is better to use pure sine wave power inverter to connect with the TV,not modified power inverter

2)can not use our power inverter connect with the fluorescent.
There are two kinds of fluorescent,one is inductance type :when turnon switch,the light can on after one second or more and some also
with buzz ,this light has instant high voltage and it is more than 700v and even more than 1000v; another one is electronic type,it also
has instant current and can be more than 700 Ah

3)if want to run the machine like washing machine ,refrigerator or water pump which have a motor ,then need to use more than 15 times to 20
times power of them

4)you can not use our power inverter connect with the coffee grinder or kettle

What is the toggle switch on the AC side?

What is the toggle switch on the AC side?

The toggle switch is the switch of the fan, usually the fan will turn on by itself when the unit got very hot, sometimes if you think the temperature is high, you can also turn on the switch to make the fan run. As some freezer & refrigerator, when you turn it on, this appliance will need big amp in the first beginning, the transformer inside will get hot in the mini secs, so the sensor not faster enough to turn the fan on, so sometimes the fan not turn on the inverter shut down because the high faster hot coming, in this moment, you'd better put the manual switch for the fan to come down the temperature, that's why we make this special design.

Why the solar controller shows: "warning solar panels over voltage" while the solar panel is not over voltage?

Why the solar controller shows: "warning solar panels over voltage" while the solar panel is not over voltage?

The warning will be shown when the battery is almost full or in full situation, you can ignore it if the controller is still in working condition.

What is UPS for LF inverter?

What is UPS for LF inverter?

When use UPS function, the inverter should have battery connected on the DC input side, and the home grid connected on the AC input side, home grid has power, the led light marked " BTY ON" will be on, it will charge the battery. When the home grid power is off, the inverter function will be work, the led light marked "INV ON" will be on, the battery charger function will turn on automatically when the ac input is restored following an ac power failure.

Why there have two positive and two negative on the input side?

Why there have two positive and two negative on the input side?
Usually just wire one positive and one negative is ok, if you want to use big watt, you can wire both so as to balance the electric amps.

What battery cable size should I use for 3000w modified power inverter?

What battery cable size should I use for 3000w modified power inverter?

For 3kw modified power inverter, better use 2AWG battery cable, other wise it will become very hot & effect the efficiency

How to charge battery from your UPS LF inverter?

How to charge battery from your UPS LF inverter?

Battery Charging

1. Make sure the switch is “off” .

2. Battery is well connected.

3. Connect AC input to your home grid outlet.

( Note : Make sure your home grid frequency and voltage match with the inverter.)

4. According to your battery type , adjust the battery charge adjustor(from 1-8)to the right position to suit your battery.(at position 0 and 9 the charger will not work.)

AC INPUT for battery charge :

For AC 220V-240V :

When total on load power <1500w (0-5A), please use AC input socket for charging .

When total on load power >1500w and <3000w（0-10A）(with a 3000w-inverter), please use AC input H line bank for charging. 

What is the no load current draw of LF inverter?

What is the no load current draw of LF inverter?

LF Inverter		No load current
		Power save off	Power save on
3K/5K	12V	2.0-2.5A	0.4-0.5A
	24V	1.8-2.3A	0.36-0.46A
	48V	1.0-1.5A	0.2-0.3A
6K/8K	12V	4.0-4.5A	0.8-0.9A
	24V	3.5-4.0A	0.7-0.8A
	48V	2.0-2.5A	0.4-0.5A

What is the frequency of the grid tie inverter?

What is the frequency of the grid tie inverter?
Our grid tie inverter's frequency is 50hz/60hz, auto detective.

Why there have 2 set red & black dc terminals?

Why there have 2 set red & black dc terminals?

If you are using big watts appliance, this can separate to 2 set red & black(both 2 red are connected, 2 black are connected) to balance one cable have big amp coming for avoiding the cable to hot & efficiency)

What battery cable size should I use on this 8000w modified power inverter?

What battery cable size should I use on this 8000w modified power inverter?

For this 8kw inverter, better use 0awg battery cable, otherwise it will become very hot & effect the efficiency, tks.

What's the difference for your power inverter?

What's the difference for your power inverter?

Inside the IC is microchip, come from usa, fastest respon, not china chip, about the mosfet is come from IR, also from USA, transformer come from taiwan factory, inside choke is come from Japan, taiwan manger quality,  the above points can make the inverter have better efficiency & working life.

What is peak surge power?

What is peak surge power?

Some motor appliance need 10-15 times to turn on the appliance, means if the motor mentioned 100w, then need 15 times big power inverter to turn it on, this is the peak surge power.

What kind of battery do you recommend to use with this 3KW power inverter?

What kind of battery do you recommend to use with this 3KW power inverter?

For this 3KW power inverter just use it with Lead-acid battery, like Gel U.S.A or A.G.M1 or A.G.M2

When the fan will turn on automatically?

When the fan will turn on automatically of your power inverter?

When inside go to 70℃, will auto start to cool the temperature.

Is there a remote control for this inverter?

Is there a remote control for this inverter?

Q: Is there a remote control for this inverter? I want to mount it near my batteries and control it from inside a motor home.

A: I am sorry that there is no remote control for this inverter, thanks!

Can I use circuit breaker instead of a fuse to fit into the positive side from the battery?

Can I use circuit breaker instead of a fuse to fit into the positive side from the battery?

A: Hi, can not use fuse, but can use circuit breaker instead.

Why better do not use modified power inverter to run pump?

Why better do not use modified power inverter to run pump?

As pump or motor appliance have 15-20 times peak power require, modified power inverter only 2-times peak power, you may need try LF INVERTER to run this kind of appliance, tks.

How does the ATS function work on this 24v LF inverter?

How does the ATS function work on this 24v LF inverter?

ATS Function on 24v LF inverter:

a. when switch to ATS function, then: 

for 24v system, your battery voltage when 21.5v, will auto switch to ATS mode, means inverter will auto switch the home power to provide the 220v AC output & charge your 

battery at the same time. After charge your battery to 28v,  will be back to inverter mode.(PS.AC input cable need plug in all the time)

b.if you are using solar system, then you need stay at ATS function , because in the day time, all the power come from solar, after night time or battery under 21.5V,  will auto 

switch to home power, will let your electric products keep working, until day the sun come on again, then will be back to inverter mode again.

What does it mean when there shows "warning solar panels over voltage" on the controller?

What does it mean when there shows "warning solar panels over voltage" on the controller?

Q: My solar controller shows: "warning solar panels over voltage" , but I'm sure the solar panel is not over voltage.

A: The warning will be shown when the battery is almost full or in full situation, you can ignore it if the controller is still in working condition.
https://www.powerjackpowerinverter.co.uk