Installation of protection relays at site creates a number of possibilities for errors in the implementation of the scheme to occur. Even if the scheme has been thoroughly tested in the factory, wiring to the CTs and VTs on site may be incorrectly carried out, or the CTs/VTs may have been incorrectly installed. The impact of such errors may range from simply being a nuisance (tripping occurs repeatedly on energisation, requiring investigation to locate and correct the errors) through to failure to trip under fault conditions, leading to major equipment damage, disruption to supplies and potential hazards to personnel. The tests carried out will normally vary according to the protection scheme involved, the relay technology used, and the policy of the client. In many cases, the tests actually conducted are determined at the time of commissioning by mutual agreement between the client’s representative and the commissioning team.
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GreaseMates - ISO 17025:2017 Accredited Third Party Callibration Laboratory Of India
Entry check: Check the instrument for defects and then Perform calibration. Here you compare the instrument at specific measurement points at last If the instrument falls outside the tolerances, you can possibly adjust the instrument and finalise the calibration results.
Power Sector Professional with 16yrs. of Project Execution & O&M Experience in Renewable Energy (Solar & Wind), Thermal Power Plants, Transmission Lines Projects in India, Northern & Western Africa, Middle East Region & Latin America Countries.
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