JJW SJW A.C. Precision Purity Regulated Power Supply

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1. Product Description:

It often happens that the electrical equipment are damaged because of lack of power. The experts of power point out most 80% malfunctions of computer are caused by A.C. power supply directly or indirectly. So as to ensure the safe operation of electrical equipment, the power supply must be improved. Our products fulfill the requirements in such places for his spurious characteristic. Our products are suitable for the following fields: science department, university, corporation, hospital, broadcasting station, communication equipment, traffic system, test equipment and all automatic production equipment.


2. Product Characteristic:

A.C. Precision purity regulated power supply is our new, high characteristic electronic A.C. regulated equipment as KUPA doctor’s theory, combining Asymmetrical Digital Subscriber Loop colander net, which integrates multi-functions such as purity regulation and anti-disturbance. They are of wide range in regulation, fast speed in response, high precision in regulation etc.,to refrain all kinds of noise from power net and disturbance from peak. They are your first choice among of A.C. regulated power supply at present, which are 614 series electronic A.C. regulated power supply and ideal substitution regulated power supply.



Single phase:170-270V Three phases:310-450V

Range of input regulation:

Single phase:185-250V, output:220±5%

Three phases:330-450V, output:380±0.5%

Input frequency:50Hz±5%

Alarm value of output voltage

Single phase:output higher than 242V or lower than 198V

Three phases:output higher than 418V or lower than 342V


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Q:Sichuan transformer manufacturer that a best?
Chengdu Tianma electronic appliances limited liability company the best quality, our company with its cooperation for more than ten years, trustworthy!
Q:What is the meaning of auxiliary transformer, sub-variable and box change
box change is box-type transformer, that is, transformers and supporting the protection system, , Metering system, remote control system integrated into a box, generally used for urban district power supply, field power supply field.
Q:friedland d753 door bell transformer?
Years ago 25+ Friedland bell transformers had two glass fuses 0.5amp,these very small glass fuses protected the transformer windings.These could be the fuses they are referring to,the main supply,as you have pointed out is fed from your circuit board. Isolate that breaker and remove the cover on your transformer and have a look for your fuses,these glass fuses are about half an inch long.Hope you are successful.
Q:Transformer 1250KVA Dimensions
This is not fixed, you list the conventional products, unconventional products can be arbitrarily selected according to customer requirements. There are 300kv, 1000KV, 1100KV, 1150KV and so on
Q:Why do transformers squeak?
Normal transformers with iron laminated cores operate at 50-60Hz (50-60 times a second), but transformers in modern cell-phone chargers and PC power supplies require a higher power than would be possible for the given size restraints. A 240v to 5V @ 1A 50-60hz transformer would be the size of a deck of cards and would weigh several kilograms, but if you replace the core of the transformer with a ferrite material (powdered iron) and switch the primary winding at high frequency, say 20Khz or more (20 thousand times a second) the size of the transformer shrinks to the size of a small coin. The ringing sound you are hearing could be caused by several things: 1. It's operated at a near-audible frequency, like 19Khz (not very likely) 2. It's under very high load condition and it's struggling to meet the power requirements and as a consequence the duty cycle of the PWM has increased which can make a chirping sound. 3. It's defective or dying, and it's having a hard time regulating the output voltage and it's excessively modulating the PWM. 4. You are young and young people have better than normal hearing in the higher end of the frequency range and you might be hearing a harmonic of the higher than audible drive frequency. Hope that answers your question :)
Q:Am I overloading this electrical transformer?
From your readings ,the transformer is within it's rating. Power Transformers are usually rated to operate at 75 Deg. C and above. Sometimes up to 95 Deg. C. The data and limit will be on the nameplate. 75 Deg. C is uncomfortably hot. 95 Deg. C. will burn you. Note; SCR dimmers WILL produce harmonic currents that will increase the 'neutral load' well above 'phase load' on 'common neutral' circuits, and might be producing some high frequency heating in that T/F.
Q:I want to include a planer transformer in my Factory?
The winding of a planar transformer are on a printed circuit board. Planar transformer are operated at high frequncy in order to make this practical. It would not be very useful at 60 Hz. See:
Q:Electrical machine Question.(Transformer)?
there are many criterion it is application dependant or power it is the load that causes a temperature rise that if loaded beyond it will cause failure of course it depends on the insulation material so a smaller transformer could have a much higher rating because it can stand more heat small electronic stuff will generally be when the transformer can no longer sustain the output voltage Anita
Q:How come step-up transformers reduce current in transmission lines?
Here are some basic equations for transformer. V-high / V-low N-high / N-low Eq. 1 I-low / I-high N-high / N-low Eq. 2 where, V-high voltage at high voltage side V-low voltage at low voltage side I-high current at high voltage side I-low current at low voltage side N-high number of winding turns at high side N-low number of winding turns at low side Eq. 2 above could be written as I-high (N-low / N-high)I-low substitute Eq. 1 I-high (V-low / V-high)I-low Eq. 3 Let us have an example to give a good answer to your question. Consider a 30 MVA, 13.8-138 kV, 3-phase step up transformer. The 13.8 kV is at the generator side and the 138 kV is at the transmission side. Low side current is I-low 30,000,000 / 1.732(13,800) 1255 A High side current is I-high 30,000,000 / 1.732(138,000) 125.5 A it shows that I-high is less than I-low. Also, using Eq. 3 to further confirm result, we have I-high (V-low / V-high)I-low I-high (13,800 / 138,000) 1,255 I-high 125.5 A
Q:polyphase transformer?
1. unsure you would need to read up on that there are plenty of books on power distribution I get the feeling an explaination wouldnt help you without a bit of research first 2. power transformers are manufactured to a certain specification eg 11,000 in 415V out, the output voltage is dependant on the ratio of windings 3. if the turns ration is 1:100 ie if the primary winding has 1 turn and the secondary winding has 100 turns then the voltage on the secondary will be 100 times that of the primary. (not sure if i have answered your question but i tried!)

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