Insights

Notes from the works.

Selection guides, specification advice and technical notes written by the people who build the equipment — not by a marketing agency.

Selection guide8 min read

Oil cooled vs dry type transformers: how to choose

Cost, fire risk, footprint, maintenance and losses — the five questions that decide whether your project needs an oil cooled or a dry type transformer.

14 January 2026

Buying guide7 min read

How to choose a transformer manufacturer in Hyderabad

Nine checks that separate a manufacturer who will still be answering the phone in year eight from one who will not — licences, test facilities, loss guarantees and more.

3 February 2026

Technical6 min read

Compact substations explained: when a CSS beats a conventional substation

A packaged substation puts HT switching, the transformer and LT distribution in one factory-tested enclosure. Here is when that is the right call — and when it is not.

25 February 2026

Buying guide9 min read

HT panel vs LT panel: a buyer’s guide to switchgear in India

What separates 11kV and 33kV metal-clad switchgear from 415V distribution boards — ratings, standards, forms of separation and the specification traps to avoid.

18 March 2026

Technical7 min read

Inverter duty transformers for solar plants in Telangana and Andhra Pradesh

Why a standard distribution transformer fails early on a solar plant, what harmonic duty actually demands, and how to specify an inverter duty unit properly.

8 April 2026

Quality8 min read

Transformer testing in India: IS 1180, IS 2026 and IEC 60076 explained

Which routine tests every transformer must pass before despatch, what each one actually proves, and how to read a test certificate without taking it on trust.

6 May 2026

Selection guide9 min read

How to size a distribution transformer: a practical guide

Connected load is not the answer. Diversity, future growth, harmonics and ambient temperature all move the number — here is how we arrive at a rating.

4 March 2026

Technical7 min read

Transformer maintenance: what to check, and how often

Oil level, breather colour, BDV, winding resistance and thermal imaging — a maintenance schedule you can hand to a site team.

22 April 2026

Buying guide7 min read

APFC panels: what power factor correction actually saves you

Penalties, cable heating and released capacity — where the money is, how to size a bank, and where automatic correction goes wrong.

19 May 2026

Technical6 min read

Choosing CTs and PTs: accuracy class, burden and why they matter

A metering CT and a protection CT are not interchangeable. Class, burden, knee point and ratio — what to specify and what goes wrong.

11 June 2026

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