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Transducers convert data collected in one format into electrical signals used by meters
and computerized monitoring and control systems. Accuracy of transduced signals is
important to alarm and control functions. Examples of transduced data include:
and computerized monitoring and control systems. Accuracy of transduced signals is
important to alarm and control functions. Examples of transduced data include:
·
Bearing oil level or temperature read by a meter or scanning equipment
·
Megawatt or megavars as input to the SCADA system
Maintenance or Test
Recommended Interval
Calibration
Annually
Transformers convert electrical power from one voltage level to another. Transformer
reliability is essential to the continued delivery of the facility's services.
reliability is essential to the continued delivery of the facility's services.
Maintenance references and standards from which the recommendations are drawn
are numerous:
are numerous:
·
Manufacturers' Instruction Books
·
Doble Transformer Maintenance and Test Guide
·
IEEE Std. 62-1995
·
FIST Volume 3-30, Transformer Maintenance
·
NFPA 70B - Recommended Practices for Electrical Equipment Maintenance
Station and distribution transformers generally operate at relatively low voltages
and power ratings. They provide step-down power to supply plant auxiliary
loads--for example, a 480 - 240/120-Vac transformer that supplies power to
auxiliary lighting panels.
and power ratings. They provide step-down power to supply plant auxiliary
loads--for example, a 480 - 240/120-Vac transformer that supplies power to
auxiliary lighting panels.