Common Settings For All Steps - Hitachi Relion 670 Series Applications Manual
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Also See for Relion 670 Series:
- Applications manual (438 pages) ,
- Commissioning manual (284 pages) ,
- Product manual (192 pages)
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Section 8
Current protection
tPCrvx, tACrvx, tBCrvx, tCCrvx: Parameters for programmable inverse time characteristic curve. The
time characteristic equation is according to equation 42:
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t s
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EQUATION1722 V1 EN-US
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.
8.3.3.2
Common settings for all steps
AngleRCA: Relay characteristic angle given in degrees. This angle is defined as shown in figure 63. The
angle is defined positive when the residual current lags the reference voltage (Vpol = -)
ANSI10000031 V1 EN-US
Figure 63:
130
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A
÷
+
×
B
TD
÷
p
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i
÷
-
C
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ipickup
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x means step 1, 2, 3 and 4.
Reverse
Area
AngleRCA
Iop = I2
Relay characteristic angle given in degree
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Forward
Area
ANSI10000031-1-en.vsd
1MRK511407-UUS Rev. N
(Equation 42)
GUID-A00A942B-E760-42EE-8FEB-F723426783F3 v1
Vpol=-V2
Phasor measurement unit RES670
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