Protective Elements
Tripping curve
These symbols are used in the following description of the tripping principles of phase differential protection:
Symbol
Explanation
S
N
Rated Power of the Protected Object
V
LL
Rated Voltage of the Protected Object
V
LL,W1
Rated Voltage of side W1 (primary / high-voltage) of the transformer
V
LL,W2
Rated Voltage side W2 (secondary / low-voltage) of the transformer
CT
pri,W1
Primary Rated current of Current Transformer on transformer side W1
CT
sec,W1
Secondary Rated current of Current Transformer on transformer side W1
CT
pri,W2
Primary Rated current of Current Transformer on transformer side W2
CT
sec,W2
Secondary Rated current of Current Transformer on transformer side W2
I
b
Base current (is depending on the applied context, in general, it is the Rated Current of the
Protected Object. See also the information given above in Section „Phase Differential
Protection Applications“.
I
b ,W1
Base current or Rated Current of transformer primary side (W1)
I
b ,W2
Base current or Rated Current of transformer secondary side (W2)
I
pri,W1
I
pri,W2
Uncompensated primary current phasors on corresponding winding side
I
W1
I
W2
Uncompensated secondary current phasors on corresponding winding side
604
MCDLV4
DOK-HB-MCDLV4-2E
Summary of Contents for HighPROtec MCDLV4
Page 3: ...Order Code Order Code 3 MCDLV4 DOK HB MCDLV4 2E...
Page 47: ...Installation and Connection 47 MCDLV4 DOK HB MCDLV4 2E...
Page 164: ...Input Output and LED Settings 164 MCDLV4 DOK HB MCDLV4 2E...
Page 433: ...Parameters 433 MCDLV4 DOK HB MCDLV4 2E...
Page 457: ...Device Parameters 457 MCDLV4 DOK HB MCDLV4 2E...
Page 473: ...Blockings 473 MCDLV4 DOK HB MCDLV4 2E...
Page 988: ...Protective Elements 988 MCDLV4 DOK HB MCDLV4 2E P P Q P Q P Q Q Q P S S...
Page 989: ...Protective Elements 989 MCDLV4 DOK HB MCDLV4 2E Pr Q P Q P Qr...
Page 1023: ...Protective Elements 1023 MCDLV4 DOK HB MCDLV4 2E...
