Fuji NP1Y08R-04 Module

100% Brand New Module Fuji NP1Y08R-04 Low Price

Description

The electrical durability test must be carried out for the number of operation cycles specified for the corresponding intermittent duty class shown in the table on page 5, and under the circuit conditions of the corresponding utilization category as defined in the table on page 4. Contact wear is caused by arcing that occurs between contacts when the current is interrupted. The amount of contact wear is directly proportional to approximately the second power of the interrupted current value. Therefore, when a contactor is used for inching or plugging operations, the expected service life of the contacts will be much less than if used for normal operations.

The overcurrent withstand value is maximum value of current which can be allowed to flow in contactors for a specified period of time which is expressed by “time-current (root-meansquare) value”. The starting current of squirrel-cage motor is 5 to 6 times the full load current. The starting time of special purpose motors for blower, winder, fan and centrifugal separator having a large rotational inertia is 7 to 8 seconds, which is a longer period than that of standard motor with driven machine. Thus larger current than the rated operational current will be allowed to flow through the contactors for a longer time than usual under these conditions. The graph below indicates the overcurrent withstand values for SC series contactors.

Fuji Module

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