Which generation does your magnetic contactor belong to?

Which generation does your magnetic starter belong to?

Renewing equipment at the appropriate time prevents serious accidents and their spread

Internal equipment used in receiving/distribution facilities has a limited life expectancy.

　Preventive maintenance is based on the idea that equipment is renewed or repaired before its life expectancy is reached when allowable failure rate values are exceeded. Preventive maintenance reduces failure rates (including power outages and accidents) significantly.

(a) Early failure period: After a start of operation, there are possibilities of weaknesses that take time to adopt to an external environment and of failures in manufacture.
(b) Random failure period: The failure rate constantly continues without any relation to elapsed time.
(c) Wear-out failure period: The failure rate keeps increasing due to equipment deterioration or wear of components. This is the period witch you have to consider an overhaul or a upgrade of equipment for maintaining the functionality as a facility.

The Japan Electrical Manufacturers' Association (JEMA) suggests the following recommended upgrade periods by type of equipment used for high-voltage facilities based on reports from the Institute of Electrical Engineers of Japan and questionnaires to business operators by the Ministry of Land, Infrastructure, Transport and Tourism.

Product	Recommended upgrade period (after start of use)
Magnetic contactor Magnetic starter	10 years or specified switching times