Why zigzag transformer

The thickness of each level's line indicates its age, which helps you identify Hello All, This script shows the indicators in separate windows on the main chart. Different colors are used for each indicator Another script based on zigzag, divergence, and to yield support and resistence levels. Usually, we can derive this based on pivots. But, if we start looking at every pivot, there will be many of them and may be confusing to Calculates a log-log regression from arrays. Due to line limits, for sets greater than the limit, only every nth value is plotted in order to cover the entire set.

Parameters: size : int, console line size. Returns: tuple, table and string array. Basics What are Fibonacci The recovery rate of resistance is nothing but the rate at which point the resistance changes. Usually, The LDR responds in a few tens of milli secs once the light is given after complete darkness, however, once the light is removed, then it can take up to a second. The LDR specifications mainly include maximum power dissipation, maximum operating voltage, peak wavelength, dark resistance, etc.

The values of these specifications mentioned below. The light-dependent resistor is very responsive to light. When the light is stronger, then the resistance is lower which means, when the light intensity increases then the value of resistance for the LDR will be decreased drastically to below 1K.

When the light drops on LDR, the resistance will be decreased and when the resistor is placed in the dark then the resistance will be increased which is called dark resistance.

If any device absorbs light then its resistance will be reduced radically. Some kinds of photocells are not at all sensitive to a specific range of wavelengths because it depends on the used material. Once light rays fall on a photocell, the resistance will be changed in 8 ms to 12, while it uses few more seconds to rise the resistance back again to its early value once the light is removed.

So this is known as a recovery rate of resistance. In audio compressors, this property is applicable. The classification of LDR can be done based on linearity or photosensitive materials.

Light-dependent resistors are simple and low-cost devices. These devices are used where there is a need to sense the presence and absence of light is necessary. These resistors are used as light sensors and the applications of LDR mainly include alarm clocks, street lights, light intensity meters, burglar alarm circuits. For a better understanding of this concept, here we have explained one project namely; power conserving of intensity controlled street lights using LDR.

To overcome this problem, here is an alternative method using LEDs i. The proposed system is built to overcome the drawback of the present-day HID lamps. The proposed system determines the usage of light-emitting diodes as a light source and its adjustable intensity control according to the requirement. I regularly see your work.

You are doing a great work for humanity. Jignesh, i like Ur website very much bec this is the best platform i had ever see for the upcoming and present professional. I would like to ask u about the mcc motor control circuit and pcc power control circuit. Thank u for such excellent technical notes i want to know that what is the maximum length for laying of 6.

It is FREE of cost for downloading or uses but It you want to make any changes or need unlock version of Sheet than You have to but it at nominal cost indicate on Site.

Now i fell proud to be working as engineer. Dear Jignesh, Namaskaar, Your website is not only informative, its one of the best service to whole nation. Thanks for your work. It will be very much useful. Thanks again. Hello, The site is interesting and very helpful. The software is very easy to use and efficient.

Not everything I understand, but over time ….. I do not know it like that. How do we calculate the size of Earthing Cables. One of my Customer requires such cable to be designed for a Panel of rating KA. Thanks Mr. Hopefully you will keep update your site. Thanks once again. It consumes by time in estimation of all wires, since my project i.

I want to save my time. Jignesh SIr ek din aisa aeyga jab apko crore people like kregi… kyonki ap ap m wo baat h…. Thank you very much for providing such useful personnel and professional information. Any person can become elect engineer by using your resources.

Please accept my heartiest thanks for your extra ordinary effort put on this blog. This is my first Visit to your site but its a blog of ample knowledge regarding, electrical Engineering. Keep it up. With reagrds Sanjay Patidar. Surely,I am one of the electrical personels that will benefit from your wealth of knowledge. Hello Sir, I must say very useful n informative articles and tools for the ones working in this field.

For this I need to prepare the Libraries for various Equipments in the Network. Recently I am facing Problem in Cable Library. I have used your Excel for the same which help me upto an extent. Dear Sir, Thank you for sharing this superb electrical engineering tool.

It is very helpful for us as a young practitioner. Your expertise is highly recommended. Dear sir, kindly says how to provide seeting for protection relays? Great Work Dear …!!!! Keep it up.. I am Proud to be your Colleague…!!!!!! Dear Sir, i very thankfull to you for the ur web,.. Dear jignesh sir your sit is very useful thank you for it and can you tell me the software to calculate the location of a substation by calculating its load center.

Dear Jignesh, I am curious to know the about the LV CB selection requirements for bus tie-in applications between Motor Control Centers, particularly the following scenario. There is a trip logic controlling these CBs, as the permanent paralleling will be blocked by this logic and one out of the two Incomer CBs will be tripped in case of a permanent paralleling situation.

However, whilst closing the bus-tie, Transfomer Neutrals will make a closed loop since there are no breaking of the neutrals on the CBs. Anybody could tell me is there any international standards for selecting CBs for such applications?

Is this scheme technically good? Is there any danger in connecting the neutrals together? Please advise…thanks in advance. How to calculate ground fault current of the equipment,transformer and generator in order to sizing the earth cable for them?

You have done a great job and which is very useful for day to day Electrical transactions. We give great appreciation to you. Dear jignesh, You are god of electrical engineer from india………………..

Dear Sir , I have a question ,suppose we are going to design a LT Panel Main switch board and acdb 3 phase for a control room of substation , so there will be lighting loads , ac , fan , and the Ac supply to the motors in isolator , and the OLTC of the transformer..

Please help me with this any help will be much appreciated. Can you provide the voltage drop calculator for Road Lighting Voltage Drop… i havent find a single voltage drop calculator for specifically street lighting on the web. Your calculation sheets are very much useful,but i guess it would me more useful for freshers,if u give a demo video on how to use etc.

Dear Mr. Jignesh, Thanks a lot.. Iam reading ur blogs its really very interesting and useful for us. I want to do a cable sizing for the DC supply of a SwGr considering all factors like CB closing ckt,tripping ckt,trip relays etc pls advice. Can u please provide excel tool for Maximum Demand calulation for a new project set up This will help is making proper decision on State electricity board contract demnad selection. Jignesh please contact me as early as possible wants your article to publish in SPE-society of power engineers newsletter for publish in bimonthly newsletter.

Many thanks this is the most comprehensive electrical engineering technical notes I have seen so far keep up the good work. Arif Mahdi. DOL only and absolutely no problem with soft starter mode. I reckon it may be high inrush current of vacuum pump high efficiency VSD motor. Than u sir such a excellent Electrical information is uploaded for us. Earlier I had a communication with U, Pl. Jignesh, what is the difference between the documents of free downloading and the docs we have to pay USD 3.

Dear sir, plz provide me NGR related doc. My self jayanta working In Gen set company. Dear sir, i didnot get any download sheets… pls tell me hw to download this calculation sheets… if i click free download, i see a new page and there given 2 options… i clicked first option and download process also going on… bt i didnot get download file… pls tell me sir.

Float Posting Calculation sheet of S. C Level and size of D. G synchronous Panel Today.. I am planning For Electrical space planning. So i have little bit confusion in distances mentioned below. What is distance between two tranformer dry and oil wall space etc. Hi, This is Jignesh, BUsbar calculation sheet on excel is already ready and will be floated within one month.. Very good work… Keep it up….. Thank you so much. HI dear Jignesh Parmar, I am an electrical engineer from Pakistan and i really found for what i was searching from a long time.

Dear Jignesh Parmar, Your knowledge and sharing it is of high praise. Thank You very much. Actually i work in a switchgear company as electrical switchgear design engineer and here only IEC standards are accepted. Please tell me about this. Very………………very thanks sir provide a use full information.

I am also an Electrical Design engineer but I am new in this field. I have read the articles of NEC but I am unable to understand that. Could you please publish a complete substation sizing calculation with a typical example e.

To mitigate this voltage drop it is recommended to use higher size cable. To find the desired cable size pump motor name plate details required i. Thank you very much sir, I love to be an electrical engineer, your work keeps me in heights.

Hallo Sir, In Busbar current capacity is considered is in single busbar? Nice job. We are a fan of Excel too. Could you please active that. The content has a very useful information and would help any serious engineer way to solve quick without struggle.

Sirji, Please tell me steps included in lightning arrester design including reference charts and mathematical calculations. Hi Mr. Jignesh, I am interested in few calculations software and I want to buy that would you like to give me some information for the full version that what can i get in full version mean formulas details what will be in full version, your early reply will be appreciated.

Jignesh Parmar, Very nice your Excel programming, In my opinion there is a small mistake in your programming. Also in the new version the error is still there. I try to explain: C. In your calculation the result is 12 in stead of minimum The values of the range locked rotor code A till V is increasing and at the last selection V decreasing.

I have changed the mistake and made some cosmetic changes. Where can I send the excel file? Regards, Happy Harry. I am unable to purchase some of the tools, because it needs credit card and I have debit card only.. Hi jignesh Thank you for the support in sharing knowledge..

Transmission line length is 11km. Respected Sir, Plz help me about some points. I am working on micro hydro power plant, which is from 15KW to KW in Pakistan, I have some issues If you solve these for me I will be great thankful to you. In which rout will be suitable for it? In how many distances a transformer can be used and in which Generator can be used a transformer I mean above 75 KW or may be below.? I have 3 transformers each of following below specification.

I have consider cable max. DC resistance at 20 degree celcious is correct or i have to take max AC resistance at 90 degree celcious. In old kVA calculation i have to right value of cable from DO fuse to transformer 2 times in HT side otherwise your calculator is not accepting the data. In new kVA calculation sheet we have bus duct in secondary side of the transformer then how and what value of resistance and reactance to put. This calculator is useful if only one transformer but if we have two transformer in parallel or one transformer and one DG set in parallel then how to calculate.

I am having one query. Many time in tender we come across term called solid earthing. Pl let me know how it is different from normal earthing? Kind regards,. Great fan of yours..!!! In power factor correction , please let me know how the single phase sensing is effective compare to three phase sensing or which is the correct procedure to follow. Can you please elaborate by quoting any example with Calculations as to how the Consumer saves upon his Energy Bills? Jignesh, I would like to buy the 48nos of unlock electrical software.

Jignesh one more information required that after i purchased the 48nos of unlock electrical software. In case if any problems comes like if the software not working properly how can rectify? Jignesh, I would like to buy a Electrical excel tools software unlock version. Could you please tell me that after payment how i will receive the software from you?

Awaiting your feedback. Jignesh, Do you have power and distribution transformer design tools software? Please send me Electrical notes which help of for defind of electrical load with calculation of wire size and mcb.

Thanks -Raghavan Siemens. The account that created this link has been terminated due to multiple violations of our Terms of Service. Hi Sir, I am really appreciate to you.

I am intresting to buy your Electrical Notes and Excel tools after I had used the lock version. Because the Excel sheets are very good but some factor are not comply with our local code. I would like to know how can I buy your Excel Tool. I am unable to download or purchase the link of 42 Calculate Bus bar Size for Panel so please check and reply sir. Hi sir, your website is very useful for electrical engineers. I want zigzag winding calculations could you please attach.

Dear sir i hope you are doing well, iam very happy to joint with you thanks alot from your good information, Dear sir i need to ACSR cable calculation if you have time please send me in these khoshhal. On each sheet there is a Free Download and one Paid Download. What is the difference between the two? Dear Sir, I am not able to get free download of No. Please guide. Dear sir I am a working in a solar installation company as a design engineer and I uses your various electrical calculation sheets and now I need different sheet in solar I want to calculate per string voltage drop of DC cable which is from pv module to inverter distance.

As of now, the free version only allows upto 3 nos of busbars per phase. We have taken the secondary output of 11 kV of each transformer to 11 kV panel with 2 input breakers and 1 Buscoupler in between. The polarities are same. I need Type 2 coordination chart along with cable size selection chart.

I think you have to mention, what is the difference between free version and unlock version on site. Why I should spend money for unlock version? Could you please help me out or send me the correct one. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account.

Notify me of new comments via email. Notify me of new posts via email. This site uses Akismet to reduce spam. Learn how your comment data is processed. Jignesh Parmar has completed M. Tech Power System Control , B. E Electrical. Membership No:F ,M He is Presently associate with one of the leading business group as a Deputy Manager at Ahmedabad,India. The designing of a distribution transformer can be done similarly to small size transformers.

Based on the application or requirement, these transformers are categorized into different types like single phase, three phases, underground, pad-mounted, pole-mounted transformers. These transformers are specially used for networks wherever a three-phase supply is not required. Usually, these are used for repairing overhead distribution loads in residential. This kind of transformer is used to hold electrical energy from the main distribution circuit to a minor distribution circuit.

This type of transformer transmits the current to a secondary distribution circuit and also reduces the voltage of the primary distribution circuit. These transformers reduce the voltage supply for the primary circuit based on the consumer requirement. Single-phase is used in residential applications whereas 3-phase with a pad is used in underground primary circuits.