Power Inverter DC11-15V AC100-120V, AC220-240V

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1. Product Description:

Drive Variable-frequency (VFD) is the application of frequency conversion technology and microelectronics technology, by changing the motor power frequency mode to control AC motor power control equipment. Inverter is mainly composed of rectifier (AC inverter), filter, inverter (DC AC), brake unit, driving unit, detection unit, and so on. The inverter by the internal IGBT to adjust the output voltage and frequency, according to the actual needs of the motor to provide the power supply voltage, and then to achieve energy saving, speed control purposes, in addition, there are a lot of converter protection functions, such as over current, over voltage, overload protection, etc.. With the continuous improvement of the degree of industrial automation, frequency converter has been widely used.


2. Product Characteristic:

1 Frequency conversion energy saving. Motor use frequency converter is to speed, and reduce the starting current.

2 Power factor compensation energy saving. No power will not only increase the power loss and equipment of fever, more important is power factor lower leads to a decrease in power grid

3 Soft start energy saving. After the use of frequency conversion energy saving device, the use of inverter soft start function will enable the starting current from zero, the maximum value is not more than the rated current, reducing the impact on the grid and the power supply capacity of the requirements, and extend the service life of the valve. Save the maintenance cost of equipment




Input voltage

DC 12V (DC11-15V)

Output voltage

AC100-120V, AC220-240V

Continuous power








Peak power








Output frequency

60+/-3Hz, 50+/-3Hz

Output waveform

Modified sine wave

NO load current draw


Low voltage alarm activation


Under voltage shutdown


4. Reference Picture:

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Q:Are Current and Potential transformers used for Step purposes?
Transformers that are called current transformers and potential transformers are designed specifically for instrumentation purposes. They are designed to provide reduced current or voltage signals that very accurately represent the primary current or voltage. They are designed to have a minimal effect on the primary circuit. The are manufactured only in sizes needed for instrumentation purposes. Instrumentation purposes include not only providing signals to meters but providing signals to protective relays and control systems. CTs and PTs may occasionally be used for purposes other than the purposes for which they are designed. I have heard of a CT being used backwards to supply a high current at a very low voltage for some testing purpose. This sort of thing is sometimes done as a temporary measure when more appropriate devices are not available.
Q:Stepdown Transformer 220V input 110V output.?
I live in New Zealand. We use 240v 50Hz mains here too. USA uses 110/115v 60Hz. There is a 10Hz voltage frequency difference as well as the voltage difference. The stepdown transformer will be rated for 110v RMS(root-mean-squared). This is a kind of average, for want of a better description. The peak voltage is 0.707 times the RMS voltage. This is the peak on one half of the sine-wave(180'), therefore the complete sine-wave mains frequency represents 1.414 times the RMS voltage.(360' sine-wave cycle) Multiply 110v by 1.414, and you will get the peak-voltage, which is the maximum that the AC voltage can swing, both in the positive and negative parts of the sine-wave. 110v example: 110 x 1.414 155, therefore, the PEAK voltage for the States is 155v AC, or thereabouts. 240v example: 240 x 1.414 339, therefore, the PEAK voltage for Aus/NZ is 339v AC, or thereabouts. All mains voltages are a measure of averages(RMS), so a 10 or so volts either side of the stated voltage, should not prove to be a problem. Provided that the stepdown transformer can supply at least a few amps of current on the secondary(the 110v side), there will be no problems at all. Technically, the 10Hz frequency difference can make a slight difference, especially if you are trying to power some sound equipment from the States, as the Australian/New Zealand 50Hz frequency will mean that the motor will run slightly slower then the designed RPM. However, in your case, I don't think it will make one iota of difference. :)
Q:Transformer Wiring and Principle
Three-phase transformer works: the basic working principle of the transformer is the principle of electromagnetic induction. When the AC voltage is applied to the primary winding, the AC current flows into the winding to generate the excitation effect, and the alternating magnetic flux is generated in the iron core. The alternating magnetic flux passes through the primary winding and passes through the secondary winding , Which induces the induced electromotive force in the two windings, respectively. At this time if the secondary side and the external circuit load connected, there will be AC ​​current out, so the output power.
Q:why cant a transformer work in dc?
Transformers are used for obtaining a voltage which is different from available supply voltage. The supply voltage on the primary induces a magnetic field in the primary coil. This magnetic field is shared by the secondary coil, in which depending on the number of turns ( coils), a voltage is induced. To induce magnetic field, we need a relative movement of supply source and the medium where it is induced. In AC, since the voltage is varying in magnitude and direction, a stationary primary coil can get induced to produce a magnetic field. In DC, since there is no change in direction, voltage will not get induced in a stationary primary coil ( except during the switching transient conditions. i.e On and off times). Note that the fundamental requirement for induction is rate of change of flux.
Q:formulas to calculate a transformer?
You need to specify what the transformer is to be used for. (why do you have to build a transformer ?) (the characteristics of the core are critical to the design) Until you specify that, only the simplest of basics relating to turns ratios can be stated: 1 - Power in primary Power in secondary 2 - Voltage ratio turns ratio 3 - Current ratio 1 / (turns ratio) [from #1 #2] 4 - Impedance ratio Turns ratio squared. [ from #2 #3] **IF** it is a power transformer, I suggest getting a transformer with the same, or slightly higher POWER rating, then simply re-wind the secondary using #2 above. (I did) or Google: how to design transformer windings then pick the one that suits your needs best.
Q:Questions about Transformers: Revenge of the Fallen?
4. yeah 6. no 9. apparently 10. no, it's jetfire, i think 11. his name is soundwave, and he IS the sattelite. he's the decep. communications officer.
Q:How would I wire a microwave transformer to create arcs?
here you go
Q:Bully or transformers for ps2?
Bully definately. Movie games aren't good.
Q:Did you like Transformers 2?
i liked the movie alot and i think there comin out with a 3rd transformers
Q:Rated capacity of three-phase transformer S = √3 * U * I
Single phase transformer S = UI where U is the phase voltage and I is the phase current. When the composition of three-phase transformer, of course, is the three transformers add up, S = 3UI. Here U is phase voltage, I is the phase current. As the three-phase circuit to use the line current and line voltage calculation, angle and triangular connection is the same, when U is the line voltage, the phase voltage increases the root number 3 (1.732) times.

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