Sara Consultants have spoken about the transformer design, automation of transformer design and flow chart of the design automation for transformers.

1. Transformers Design
Automation
By SARA Consultants,
A transformer people since
Three Decades
Visit us at: saraconsultants.com

2. Need for Automation
 Request for a quotation Or Tender for transformers can
come at any time of an year.
 Time available for replying can be from one hour to few
days only.
 Simultaneous demands from different customers at the
same time is possible.
 The design and Cost estimation people are over pressed to
meet the targets in spite of their regular involvements with
manufacturing / testing departments.
 Possibility of mistakes, changes in design requirements,
convincing task of customers are not ruled out.
 All quotations may not realize in to Work Order but nothing
to be neglected.

3. Efforts from SARA consultants
• Since 1995 we were associated with
many manufacturers in establishing
manufacturing and testing facility and
offering design support to many firms.
• Felt the urgency in Design and costing
submissions.
• Visualized that PCs would help ( PCs were
costly in those days) and attempted on it.

4. Attempts on Automation
• Developed Software based assistance on Core
cutting arrangement which was taking more time
and repetitive calculations. – Found remarkable
accuracy and time savings.
• Encouraged by this, started putting efforts on
Design calculations. – At that time XL based
calculations were used by many people.
• Observed weak points in XL system. So
concentrated on programming techniques.

5. Achievements
• Numerous software modules have been developed in collaboration
with actual users.
• Advantages observed:
• Formulae and limits are not exposed / non editable.
• Impedance and Load loss can be tuned Automatically.
• Many designs can be generated by varying various factors
to know the costing economics without loosing quality and
Specs.
• Multiple types of Print outs are possible.
• Interlinking of outputs to other software like drawing,
Simulation tests, guidance values for test field, Re-
designing in case of changes in parameters or pricing
indexes.
• Drawings to scale can be generated within few minutes
and later on can be edited easily for manufacturing.
• Quicker Submission of tenders.

6. Varieties in software upto 132kv 60MVA by
SARAConsultants
 2 Winding Power and Distribution transformers with
AutoCAD Interface.
 3 winding Wind Mill and Furnace transformers
 5 winding Separate Coarse, Fine, & Edge Winding Tapping
Transformers for OLTC.
 Rectangle core Small transformers with multiple windings.
 Core cutting schedules.
 Dry type VPI and Cast Resin type Designs.
 Test field software to generate test certificate.
 Reverse Design from an existing Transformer under
Repair – Using Core frame as input data

7. Tender Spec Sheet
Electrical Design Software
OptionalFittingsData
Costing Sheet
GTPdat.CSV
GA-Input.xls
Drawing Software BOM Files
(Consolidated BOM.csv)
Weights
General Technical
Particulars (GTP.Doc)
Electrical Design Sheet
(GtpIS.Doc)
(DesPrt.Doc)
GA
Tank
Lid
Consolidated
Accessories
GA Drawings
Fab. Drawings
(IndividualDraw.dwg)
Accessories & Fittings
Data Base
DWG - Interface
Manual Entry
The Input data file can be :
a. Tender Spec Sheet
b. TrialsList.csv OR
c. GA-Input.xls
OptionalFittings
Data
Rates
ListofMaterials
Elec.Design
Data
Other Files
(Auto CAD)
(GA.dwg)
Tender Stage
Design Stage
Drawing Stage
Flow Chart of Design Automation

8. Screen Shots of 2 WDG Software

9. Screen Shots of Multi Winding Transformers

10. Screen Shot of Repair-Design. Core Frame size as Input

11. Screen shot of 2Wdg with separate Tap winding

12. Details and Printout Samples
Print Out
Samples
2 Winding
MULTI
Winding
Design3Wdg
Detailed PDF files
2wdg-Details.pdf ACAD-3D-Details
Demo-Videos Folder 66MB
https://www.dropbox.com/sh/jj26
mey1ajzakh0/kgAUJA2U3w