Business DomainNecessity for maintenance
In order to prevent system failures and assure stabilized operation, maintenance services by professional engineers are indispensable. These engineers are required to possess sufficient technical expertise in regard to equipment and facilities.
Present failures in electrical systems
- 1.Causes are classified into the categories of unsatisfactory maintenance, intentional actions, errors, and imperfect facilities.
- 2.In more than half of all cases, failure spots are mostly located in circuit breakers and switches.
- 3.The phenomena of failures result from the reduction of insulation, ground faults, and burning.
Examples of failures and deterioration
The following photos show typical accidents of each equipment.
Power reciving substation facilities
Excerpt from consideration of reliability in long-used incoming and transforming facilities by The Japan Electrical Manufacturers’ Association (JEMA), Fiscal 1999
Rotating machine facilities
These are examples of failures caused by deterioration.