YFB-71~355 Series Dust Explosion-proof Three-phase Asynchronous Motors

1. General Description

       The explosion-proof mark of this series motors is DIPA21TAT4. This series of motors conform to the National Standard GB12476.1 <<Electrical equipments for use in the environment of combustible dust- part1: Electrical equipments are protected by enclosure and limited surface temperature; section 1: technical requirements for electrical equipments >>. This series of motors are suitable for factories where exit combustible dust and non-electric dust, besides, the dangerous area zone is 21 and 22 with the temperature groupT1, T2, T3 and T4.

       This series of motors are not suitable for the dust explosion hazardous area that caused by some combustible materials which don't need oxygen in the air (e.g. explosive; gunpowder) or some materials which would easily cause fire, in addition, this series of motors are not suitable for the explosive hazardous area which exist combustible dusty gas simultaneously.  

       This series of motors have same rated power, flange type, electrical properties and mounting dimensions as the series of YB2 series motors. 

       The main enclosure of this series motors is of protection degree IP55 (terminal box: IP55).

2. Technical Parameters

       Rated voltage: 380V, 660V, 380V/660V
       Rated frequency: 50Hz
       Cooling system: IC411
       Mounting arrangement: B3, B5, B35
       Duty type: Continuous (S1)