ABB REG670 - Common Settings for All Steps

For ANSI inverse time delay characteristics all three types of reset time characteristics
are available; instantaneous (1), IEC (2 = set constant time reset) and ANSI (3 =
current dependent reset time).
For IEC inverse time delay characteristics the possible delay time settings are
instantaneous (1) and IEC (2 = set constant time reset).
For the programmable inverse time delay characteristics all three types of reset time
characteristics are available; instantaneous (1), IEC (2 = set constant time reset) and
ANSI (3 = current dependent reset time). If the current dependent type is used settings
pr, tr and cr must be given.
tPCrvx, tACrvx, tBCrvx, tCCrvx: Parameters for programmable inverse time
characteristic curve. The time characteristic equation is according to equation
192:
[ ] = + ×
-
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ç ÷
ç ÷
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æ ö
ç ÷
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è ø
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p
A
t s B k
i
C
in
EQUATION1189 V1 EN (Equation 194)
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 180. The angle is defined positive when the residual current lags the
reference voltage (Upol = -U2)
1MRK 502 071-UEN - Section 9
Current protection
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062 355
Application manual