Purpose of Protection System:

Minimize damage
Leave unaffected equipment in-service
Maintain equipment operating limits
Maintain electrical system stability

In order to attain these objectives, a protection system must be fast, reliableand ensure discrimination. Protection, however, has its limits because faults must first occur before the protection system can react. Protection therefore cannot prevent disturbances; it can only limit their effects and their duration. Protection units continuously monitor the electrical status of power system components and de-energize them (for instance by tripping a circuit breaker) when they are the site of a serious disturbance such as a short-circuit, insulation fault, etc.


TCNOM specializes in precommissioning works of new power plants, EHV substations which involve the testing of all equipments as per standard and takes up the full commissioning activities.

TCNOM takes up the testing of all equipments on regular maintanance shedule.

TCNOM takes up thye annual testing shedules of various power plants/ substations and attend to the emergency works at the stations to bring back in short time period.

TCNOM is equiped with modern testing equipments/instruments with experienced engineers to do the testing and commissioning works as per the international standards.


We are also providing Maintenance Assistance Services to Mega Power Plants. Our Maintenance Services includes Electrical & Instrumentation Maintenance of Boiler, Turbine & its auxiliaries and Balance Of Plant.

Our service range includes various types of Power Plant like Coal based Thermal Power Plants, Gas Based Power Plant, Waste Heat Recovery Boilers, and Co-Generation Power Plants. We are handling both AFBC & CFBC Boilers in Thermal Power Plants and supporting our clients on 24x7 basis. We operate Number of Power Pants , both Captive Power Plants (CPP) & Independent Power Producer (IPP).

We shall continue to assist clients generate Power at lesser Operating Cost while enhancing life cycle of their Properties (equipments) through our timely and Quality Maintenance. After all, our longitivity in the industry stands Testimonial to our Power Plant O&M.

Equipment and situations vary greatly, and sound engineering and management judgment must be exercised when applying these recommendations. It should not be the sole source of information used in conducting maintenance activities. Other sources of information should be consulted (e.g., manufacturer's recommendations, unusual operating conditions, personal experience with the equipment, etc.) for references associated with these maintenance schedules.


Retrofitting refers to the process of updating older equipment with new technology. In the world of industrial electrical equipment, retrofits are regularly used to add functionality to many types of electrical equipment, including circuit breakers, motor controls, panel boards and switchgear.

First, determine if the existing systems are operating at optimum levels before considering replacing existing equipment with new higher efficiency equipment. This can be accomplished by performing an energy audit. Sometimes, considerable savings in utility costs can be gained by evaluating the performance of the building envelope and existing systems: leaks, clogged/dirty filters, stuck dampers, disabled sensors, faulty or incorrect wiring, or even lack of knowledge on how to properly operate and maintain equipment can all contribute to inefficiencies and increased costs. Audit the performance of the building's water systems as well; since leaking and inefficient systems not only waste water, they also use energy by needlessly running pumps and other electrical equipment.