CHARGING METHOD OF REDUNDANT SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a charging method of a redundant system with an extremely simple charging system which does not load a user with initial investment for redundancy when the redundant system is structured by the charging system. SOLUTION: This system comprises an in-use system and a standby system having the same functions and the output of the in-use system in a stationary state and the output of the standby system in an abnormal state of the in-use system are switched and used. The charging method of the redundant system when a user side uses the redundant system provided by a maker side determines a charged amount according to the frequency of switching.