Softbitonline - Pole Mount Wound Core HT Transformer Design Software

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Pole Mount HT Transformer Design

Pole Mount HT Distribution Transformer Design Software
This software helps you to design single phase pole mount HT transformers. The core design can be shell type wound core and core type stacked core. The basic features remain the same as in case of power & distribution transformer design package.

Transformer Update: Download
Transformer Operational Manual: Download

Optimize your design to get -

	Desired costing of transformer
	Desired losses - no load losses and load losses in transformer
	Desired outer (tank body) dimensions of transformer
	Energy saving & energy efficient transformer

Free Download - Data Sheets for a 11/0.250 KV, 10 KVA Single Phase Transformer*

How does transformer design software work?
1 - Just enter the KVA rating, Impedance, NLL (No Load Losses), LS (Load Losses), select the flux density and press the "Auto mode". Within seconds you get various design outputs just showing you the core and copper weights depending upon the entered impedance value. Select any set of values as per your preferred tolerance and you get the complete design data of the distribution or power transformer (clearances and certain other values are added as default values but you can change as per your requirements),

2 - Still you have the "Manual" mode to change and fine tune your design as per your requirement (if desired),

3 - Change no. of HV coils/discs per limb, size of HV/LV conductor(s) - both round conductor and strip size, no. of parallel LV conductors,

4 - You can reset various clearances, change current density, conductor insulation as per your requirement and client specifications,

5 - Select HV winding type - Cross Over to Disc winding and vice -a - versa,

6 - Tapping details for OLTC and Off Load Tap Changer upto 25 steps. Enter any + step value through - step @ any % step value,

7 - You get values of Axial and radial forces developed in the windings during short circuits, temp gradients for HV and LV, Thermal Time Constant and ability to withstand shortcircuits with winding temperature rise,

8 - Pressed Steel Radiator (PSR) data calculation added you get automatic fixing dimensions of radiators - section width, CD and no. of fins. Options to select 226, 300 and 560 width sections. Tank drawing details are generated automatically.

9 - Feature added to get winding data for an old transformer

10 - GTP (Guaranteed Technical Particulars), Core details, core & winding assembly details, estimation and costing sheets are generated in the 'Word Format' for easy access, printing and sending the same via email to clients for approval, in house departments like design, QC, purchase, estimation, production, despatch. So this distribution and power transformer design software saves time, energy and revenue. A must key tool for transformer design and training professionals and engineering students.

Free Download - Data Sheets for a 11/0.250 KV, 10 KVA Single Phase Transformer*

* These data sheets are for study only and just to give you an idea that how you get the design parameters in word formate. Please do not use this data to manufacture a distribution transformer as we do not stand any guarantee.

Factors controlling and affecting the design of a transformer
Principle of operation of a transformer
"A transformer is a static machine which works on the principle of mutual induction. When a coil is placed in the vicinity of an other coil, an emf if generated in the coil with the change in rate of magnetic flux associated around the other coil."
So all the transformer whether a HT transformer, a distribution transformer, power transformer, stepup transformer, stepdown transformer, auto transformer, furnance transformer, induction transformer, rectifier transformer, power supply transformer, auxillary transformer, control transformer, audio transformer, frequency transformer, EHT transformer, oil filled transformer, dry type transformer, current transformer, potential transformer, copper transformer, aluminium transformer, off load transformer and on load transformer all work upon the above said principle of operation of a transformer. The magnetizing core is a very essential part of a transformer. To get the preliminary dimensions of transformer core we first need to know the specifications of a transformer like - type of transformer (a number of transformer types are mentioned above), rating of transformer in KVA, number of phases of transformer, rated voltage for primary winding of transformer and secondary winding of transformer, the operating frequency of transformer, the vector group of transformer, short circuit impedence of transformer, no load losses of transformer, load losses of transformer, tapping requirements for transformer. The dimensions of the core of transformer are closely connected with the dimensions of other transformer parts like winding of transformer. The emf per turn of a transformer is one of the most important values defining not only the dimensions of a transformer, but the number of transformer winding turns too. This also influences the value of transformer short circuit impedence, the transformer weight and transformer losses etc.,. The transformer design flux density in a transformer leg depends upon the grade of CRGO core laminations that would be used in the transformer manufacture. For transformer core grades M2 to M6, the transformer design flux density is taken between 1.5 Tesla to 1.7 Tesla. Proper cooling methods must be adopted in higher rating distribution and power transformer. In HT transformer and EHT transformer, the insulation type and value should be calculated and choosen carefully. Total losses in a transformer are no load losses and load losses. As transformer is a static machine so no windage and frictional losses occure in a transformer. The temperature rise in a transformer is due to load conditions of transformer, surrounding environment of transformer, purity and cleaniness of transformer oil. The cooling surface of transformer tank must be calculated care fully to avoid over heating of transformer windings and transformer oil resulting in rise in transformer body temperature. The operational frequency of transformer also affects the temperature variations in transformer. So the transformer must be operated close to its designed frequency. The transformer temperature can also be reduced by care fully designing the transformer LT winding as to use many parallel insulated conductors instead of a single solid conductor. The HT winding transformer coils and LT winding transformer coils should have oil ducts in between layers to transfer heat generated in the HT winding transformer coils and LT winding transformer coils. The core laminations of a transformer are varnished and insulated from each other to reduce eddy current loss in a transformer. This also attributes in reduction of transformer temperature. The no. of transformer radiators are also calculated carefully. Forced air is also used to lower down the transformer temperature in case of large capacity power transformer. A transformer is provided with a temperature gause to measure and indicate the transformer oil temperature. In case of an abnormal condition a transformer protection relay called buchloze relay is provided in between the transformer tank and transformer conservator. All above design calculations are done by the transformer design software which also takes in consideration the tolerances, makes validations if some transformer design part goes wrong.