Centre Of Excellence

Strategy for Opening up post Lockdown (for Indian businesses)

- By Saif Qureishi

Rarely, if ever, in the last 100 years, almost the entire population of the world, all countries and businesses have been faced with the same challenge at the same time, like this time.

Whilst the challenges COVID 19 has posed or is posing have been well discussed, and so also the positives of self-awareness and mindfulness that COVID has made us human beings realise, the question regarding, what needs to be done when we are free from Lockdown, is still open.

This article aims to give a broad strategy for businesses, on actions that may be considered, post the last lockdown. The timelines mentioned for the 3 stages below are only indicative and will be different for different businesses. They are not as important as the specific actions that the business must take through each stage.

The strategy has been divided into 3 distinct Stages:

Reducing Building Factor by Using Step Lap (SL) Laminations

A proper value of the Building factor (BF) is important while calculating the No-Load Loss (NLL) of any power or distribution transformer. It is an empirically derived factor which is based on the experience of the Transformer Manufacturer (TM) and ranges from 1.08 to 1.35 for three phase, three limb cores. Step Lap (SL) construction of transformer core instead of conventional but type construction (or Non Step Lap (NSL) type) which is still widely used by TMs in India, has been successfully used by various TMs world over, to reduce the Building factor in Transformer cores by 5 to 8%, reduce the No Load current and the noise level relative to conventionally stacked NSL cores. This paper explains how SL laminations reduce the No Load Loss in a transformer by considering the specifics of magnetic Flux transfer in joints areas of a SL core versus a NSL transformer core. By 1947, the first catalogue containing design curves and other essential information on grain oriented steels was published.



Our majestic and incredible India enters the 69th year of marking the celebration of our Republic Day. The day when the Indian Constitution came into force is year on year celebrated as our Republic Day. 

The whole nation gets coloured in the national tricolour at the celebration of our Republic Day on the 26th of January.

KRYFS celebrated this Republic Day with a feeling of gratitude in our hearts for our defence forces by sending personalized notes.

Transformer core ordering- by Stack height, number of sheets/books or Weight?

In any Power Transformer manufacturing Company, should the core be ordered on stack height (which is directly proportional to the cross sectional area of the core and therefore inversely proportional to the flux density), or on the number of sheets in each leg (which would enable production to efficiently assemble the core without shortages or mismatches in leg heights) or should it be ordered on weight basis (which would enable purchase to effectively control the costs).




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