Copper Electric Current Transformer, For Industrial, Commercial, Electricity Distribution, Certification : CE Certified

Note: CT Rating should selected in between 40% to 90% of the full load rating

Calculation of va burden :
Theare are two types of burden while measuring on meter

• 1) Instrument individual burden- A
  Max va = 0.75 (Calcuated burden on analog and Digital meter of all make)

• 2) Wire burden wich is connected to instrument - B
  Va burden is (A•B)
  Safety multiplication factor is - 1.2 or 1.5 Times Hence total va burden is = (A+B) x 1.2
  For Example :- Wire size is 1.5sq. mm, For Copper Cable    lenpht is 5 meter
  = 0.75 x (5/1.5)
  = 2.5 va x 1.2
  VA=  KxL/S = 3 Va
  Where K= 0.5 = 5 Sec, There for Required CT= 3VA
  L= Length of Wire