Patent ID: 11921170
Assignee: ELECTRONIC SAZAN FAN ARIA COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 4:
5. The method of claim 4, wherein satisfying the fault condition comprises satisfying one of:
a first condition comprising |EI|>3% and, |
     
      
       E
       V
      
      
       E
       I
      
     
    
    |>
   
   ⁢
   2
  
  ;
 

 and
a second condition comprising VNE3>Vth1 where Vth1 an amplitude threshold for the periodic neutral-to-ground voltage; and
a third condition comprising |VNE3−VNE1|>Vth2 and |I12−I11|<Ith where Vth2 is a current change threshold and Ith is a current change threshold.