Evaluation of possible Winding & Core damage through Transformer Turns Ratio Measurement (TTRM)

In a previous blog post, we shared our views on the importance of transformer testing and discussed: a) the principles of winding resistance measurement, b) OLTC condition analysis and c) our thoughts on the ideal kit for transformer testing. In this blog post, we will share our knowledge on assessment of possible winding & core …

Estimate Residual battery life with ideal battery discharge kit

Batteries have been used for long in human history. The battery is a device which converts chemical energy to electrical energy. Beginning with the invention of the lead acid battery in 1859, battery technology has developed to such an extent that batteries are now been used in many industries. Examples of industrial applications of batteries …

New Market Story: An Energy Management System For Telecom Corporate Park

Over the last twenty years, the telecommunications sector in India has undergone a major revolution. Today, India is the world’s second-largest telecommunications market with a subscriber base of 1.16 billion (Source: India Brand Equity Foundation). Over the next five years, rise in mobile phone penetration and decline in data costs is expected to add 500 …

Success Story : Protection Scheme Audit of 220kV GIS

One of the primary themes of our blogs has been on emphasizing the need for regular testing and maintenance of electrical assets. Some of these discussions are hyperlinked here for quick reference: a) testing and maintenance of electrical equipment at a steel manufacturing plant, b) earthing and lightning protection system audit and c) health assessment …

Central Transmission Utility of India Limited – An important entity born out of yet another reform measure in the Transmission Sector of India

The Central Transmission Utility (CTU) is an important facet of the electricity transmission sector. The Electricity Act, 2003, the legislation which determines the governance of the electricity sector in India, has allocated various important functions to the CTU. Among others, these functions include: (a) undertaking transmission of electricity through the inter-state transmission network, (b) planning …

Revamped Distribution Scheme – Another Effort to Reform the Indian Electricity Distribution Sector

In earlier blog, we discussed in detail a major problem plaguing the electricity sector in India – ensuring financial viability of Distribution Utilities (DISCOMs). We noted how this objective has long been a policy focus for successive governments and discussed a new Central Government scheme aimed at ensuring financial viability of DISCOMs; a scheme which …

Leakage Current and Monitoring of GIS Lightning Arresters

In an earlier blog, we discussed the techniques and methodologies for health assessment of lightning/surge arresters.  We also shared our knowledge on the various methods of measuring resistive leakage current or power loss. In the following blog, we answered the 10 most frequently asked questions on the various aspects of testing and measuring lightning/surge arresters. …

Transformer Winding Resistance Measurement, OLTC Condition Analysis and Ideal Kit Specifications

Power transformers are one of the most expensive and critical assets of the power sector. In this blog, we will discuss [1] principles of winding resistance measurement, a common transformer test prescribed in various standards such as IEEE C57.12.90-2006 Clause 5, IEC 60076-1 Clause 10.2, IS 2026-1 Clause 10.2; [2] OLTC condition analysis; and [3] …

How to do Condition Assessment Diagnostics of Generators?

Over the years, power generation in India has grown manifold: installed capacity has increased from 1.36 GW in 1947 to 382.73 GW as on April 2021 (Source: CEA). Therefore, maintenance of generators is critical to ensuring uninterrupted quality power to the country. Apart from the generator, the HT transformer and the HT motors play a …