Woodward HighPROTEC - Idgh - High Set Restricted Ground Fault Protection Idgh

Protective Elements
IdGh - High Set Restricted Ground Fault Protection IdGH
Elements
IdGH[1] ,IdGH[2]
Similar to the unrestrained phase differential protection, unrestrained ground differential protection functions are
provided for a high ground differential current.
Unstabilized High Set Differential Protection Element IdGH
673 MCDGV4 DOK-HB-MCDGV4-2E
Idehigh_Z01
Highset Ground Differential
Current Protection/Unstabilized
high-phase restricted earth
fault: Pickup value of the earth
differential current based on the
rated current Ib of the related
protection object.
IdG[Is2]
IdG[Is1]
IdG[Is0]
IdG min
IdG/Ib
IdGH
Is1= 2 ⋅ Ib Is2= 10 ⋅ Ib
Is/Ib
Trip Range
Operating Range
S
l
o
p
e
1
S
l
o
p
e
2