ABB Relion 670 series - Page 194

ABB Relion 670 series

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NDIR_A

DIR_A

NDIR_B

DIR_B

NDIR_C

DIR_C

NDIR_AB

DIR_AB

NDIR_BC

DIR_BC

NDIR_CA

DIR_CA

AND

AND

AND

AND

BLK

15 ms

0

15 ms

0

PU_ZMPG

PU_A

PU_B

PU_C

PICKUP

PU_ZMPP

AND

AND

AND

AND

AND

AND

OR

OR

OR

OR

OR

OR

ANSI09000888-2-en.vsd

15 ms

0

15 ms

0

ANSI09000888 V2 EN

Figure 82: Composition of pickup signals in directional operating mode

Tripping conditions for the distance protection zone one are symbolically presented in

figure 83.

Section 6 1MRK505222-UUS C

Impedance protection

188

Technical reference manual

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