HV Equipment Testing and Maintenance

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What is the main difference between Time-Based Maintenance (TBM) and Condition-Based Maintenance (CBM)?

TBM is performed at fixed intervals of calendar time, operating hours, or operating cycles, whereas CBM uses nonintrusive testing techniques to assess equipment condition and plan maintenance tasks based on equipment's previous operating history.

What is the primary goal of Reliability Centered Maintenance (RCM)?

To maximize equipment reliability and availability.

What type of maintenance involves performing maintenance tasks based on equipment's previous operating history and trending of maintenance data?

Predictive maintenance.

What is the term used to describe maintenance activities performed after a failure has occurred?

Reactive maintenance. Signup and view all the answers

Which maintenance strategy involves performing maintenance tasks at fixed intervals of calendar time, operating hours, or operating cycles?

Time-Based Maintenance (TBM). Signup and view all the answers

What is the term used to describe maintenance activities that involve identifying and addressing potential equipment failures before they occur?

Proactive maintenance. Signup and view all the answers

What percentage of electrical problems are estimated to be caused by connections, unbalanced load, and other related issues?

95% Signup and view all the answers

What is the primary goal of condition monitoring in electrical systems?

To detect abnormal temperature, voltage, current, resistance, and other parameters to prevent electrical failures Signup and view all the answers

What is the purpose of Infrared thermography in predictive maintenance?

To detect temperature differences and overheating of circuits Signup and view all the answers

What is the main difference between reactive maintenance and proactive maintenance?

Reactive maintenance involves fixing problems after they occur, whereas proactive maintenance involves taking steps to prevent problems from occurring in the first place Signup and view all the answers

What is the purpose of Dissolved Gas Analysis (DGA) in transformer oil?

To detect overheating of windings, hot spots in insulation, and overheating of oil and/or corona discharge Signup and view all the answers

What is the ultimate goal of implementing an effective maintenance program?

To prevent electrical failures and reduce downtime and costs Signup and view all the answers

What is the primary goal of a Reliability-Centered Maintenance (RCM) program in terms of maintenance strategies?

To achieve the optimum mix of reactive, preventive, predictive, and proactive maintenance strategies. Signup and view all the answers

What percentage of maintenance activities in facilities typically fall under reactive maintenance?

80%–85% Signup and view all the answers

What type of maintenance involves performing maintenance tasks based on the condition of equipment, rather than on a predetermined schedule?

Predictive maintenance Signup and view all the answers

What is the ideal percentage of proactive maintenance in an effective maintenance program?

10% Signup and view all the answers

What is the purpose of electrical condition monitoring techniques in maintenance?

To apply monitoring to electrical distribution cabling, panels, and connections; switchgear and controllers; transformers; electric motors; and generators. Signup and view all the answers

What type of maintenance involves performing maintenance tasks at predetermined intervals, regardless of the equipment's condition?

Preventive maintenance Signup and view all the answers