Many utilities have complex electrical network and various types of protection.
Further, the protective relays are provided by various manufacturers with
different type of interfaces in respect of their relays. It is also
common that in many plants electromechanical relays co-exist with digital
numerical relays of different brands and make. Further, the setting ranges and
manufacturer's specific parameters of different make of relays can vary, even
though, they are designed for similar protection functions. The protection setting calculations,
relay testing and
commissioning, needs a detailed understanding of the electrical system and its
operation, relay setting calculation
and coordination principles, familiarity with various brand and type of relays, ability to
interpret complex manufacter's guide lines [manuals, application gudies]. Further,
the protection engineers in the operation and maintenance division of the plants
may leave their employment from the plant and the plant owners will need consistent support in protection
setting calculation, coordination, implementation and maintenance. We offer annual maintenance
contracts to the plants in this respect, initially starting from a detailed protection
system study. Subsequently, we undertake implementation of the relay settings
and undertake testing and commissioning as needed. In the event, the plant
experiences any problems due to inadvertent and/or mal-operation of protective
relays, we provide trouble shooting services related to relay setting
modifications, implementation and subsequent maintenance during the AMC period.