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Q:What’s the surface temperature of the inverter working? If there is security risk?

a:if the the indoor temperature is 25 degrees,the case of the highest temperature 60-70 degrees,it is no security risk,beacause all the power supply have certainly heat. our products with high conversion efficiency.which can arriveabove 90%.the heat itself is relatively small,and we have temperature protection.so its safe enough.

.Q:Do your inverter can be used with our battery charger?

a:yes. as long as our inverter’s power bigger than your battery charger.

Q: Does Universal socket means widely inserted into each country?

a: yes

Q:What kind of problems is out of our product range of replacement?

3d试机号370出的什么奖号a: product appearance of visible damage or non-compliance with damage caused by the use of specifications, such as flooding, privately disassemble, cut lines or access to inappropriate voltage

Q:what’s the role of your cooling fan in inverter?

3d试机号370出的什么奖号a:the product generates heat discharged to the outside of the casing, acts as heat.

Q:Is it accurate to test by conventional multimeter

a:no.ordinary multimeter to measure the output voltage is absolutely not accurate, and the error is very large, the general 220v output, measured with a multimeter if only about 170v or so. so be sure to use rms meter to measure, or power meter.

Q: Why your price higher than others?

3d试机号370出的什么奖号a:currently inverter market was mixed, and some low-price in fact made by small workshop shoddy, shoddy work, the same power of the inverter, and some manufacturers in order to cut costs and reduce the process and material .no set protection and alarm,use the simple hardware circuit design, and substandard components and vacuity of power, there is a very big security risk. to ensure the safety of you and your family, please choose carefully.

Q: How to devide the inverter accoding to the wave?

a:modify sine wave, using pwm pulse width modulation, during the inverter process, due to use of professional intelligent circuits and high-power fet, its greatly reducing power consumption, and increased soft start function effectively ensure the reliability of the inverter, if the electrical quality requirements are not very high, it can meet the requirements of most electrical equipments, moderate prices, but it has a greater harmonic distortion, error-prone when running precision equipment,it can also cause interference to communication devices.

b:pure sine wave, we uses the coupling circuit design, high efficiency, high stability, high-frequency technology, small size, suitable for all kinds of electrical load can be connected to any electrical devices and inductive load products (eg: cooker, oven, refrigerator , air conditioning, etc.) without any interference (buzzing sound, and snow), its output waveform is the same as ac power

Q:What is a resistive load and the inductive load?

a:the circuit is purely resistive load or can be equivalent to pure resistance, such a load is a resistive load. for example: incandescent, electric fans and other resistive loads.inductance type loads are inductive loads. for example: motors, transformers, pumps, air conditioning, etc.

Q:What we need to pay attention when use the inverter?

a: ventilation, heat, water, moisture, not pressure, can not go into the foreign body

Q: How many hours your inverter can load?

3d试机号370出的什么奖号a: the use time depends on the size of the battery capacity .there is a formula:

hours = battery capacity x battery voltage x 0.8x0.9 / load power

3d试机号370出的什么奖号for example: a 12v 100ah batteryload a 220v 100w lights

3d试机号370出的什么奖号working time = 12 (v) x100 (ah) x0.8x0.9 / 100 (w) = 8.6 (h)

Q: Why we need choose pure sine wave inverter for a drill not modify sine wave instead ? 

3d试机号370出的什么奖号beacause modify is not an exact replica power but pure sine wave is and you can get out of their wall socket home outside. the modify sine wave cant give a variable speed to such an inductive device. but pure sine wave can and has advantage of

  1. allows or full use of wariable speed tools
  2. ideal for charging & running sensitive equipment
  3. ensure quanlity performence of electronics & appliances



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