Answer / vinod

preventive maintenance is planned maintenance of equipments
based on site condition/manufature data to avoid the
breakdown of equipment.
predictive maintenece is doing after condition monitoring
for Eg. we can check temprature/vibration etc online if the
value is more equipment will take for predictive
maintenance

Answer / raju

Preventive maintenance means which are done before
breakdonw like sheduled maintenance. Predective maintenance
done by monitoring condition.

in india single phase is 230v and three phase is 440v but in other countries single phase is 110v and three phase is 380v why..?

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