ABB Relion 670 series - Common Settings for All Steps

tPCrvx, tACrvx, tBCrvx, tCCrvx: Parameters for programmable inverse time
characteristic curve. The time characteristic equation is according to equation 460:
[ ]
p
A
t s B TD
i
C
ipickup
= + ×
-
æ ö
ç ÷
ç ÷
ç ÷
æ ö
ç ÷
ç ÷
è ø
è ø
EQUATION1722 V1 EN (Equation 467)
Further description can be found in the Technical reference manual (TRM).
tPRCrvx, tTRCrvx, tCRCrvx: Parameters for customer creation of inverse reset time
characteristic curve. Further description can be found in the Technical Reference Manual.
9.5.3.2 Common settings for all steps
x means step 1, 2, 3 and 4.
AngleRCA: Relay characteristic angle given in degrees. This angle is defined as shown in
figure
263. The angle is defined positive when the residual current lags the reference
voltage (Vpol = -)
1MRK 506 369-UUS - Section 9
Current protection
Line distance protection REL670 2.2 ANSI 527
Application manual