Sel 411L - Page 1033

P.17.31
Date Code 20151029 Protection Manual SEL-411L Relay
Analog Quantities
Quantities Listed by Function
87IQFM Negative-sequence differential current (3I2) magnitude, full-cycle
cosine filtered
Per unit [pu]
87IA2M, 87IB2M, 87IC2M 2nd harmonic magnitude of the differential current, A-phase, B-phase,
C-phase
Per unit [pu]
87IA4M, 87IB4M, 87IC4M 4th harmonic magnitude of the differential current, A-phase, B-phase,
C-phase
Per unit [pu]
87IA5M, 87IB5M, 87IC5M 5th harmonic magnitude of the differential current, A-phase, B-phase,
C-phase
Per unit [pu]
87KA, 87KB, 87KC Ratio of the equivalent Alpha Plane, A-phase, B-phase, C-phase NA
87APAA, 87APAB,
87APAC
Angle of the equivalent Alpha Plane, A-phase, B-phase, C-phase Degrees [°] (±180°)
87KHRA, 87KHRB,
87KHRC
Ratio of the equivalent harmonic-restrained Alpha Plane, A-phase,
B-phase, C-phase
NA
87HRAA, 87HRAB,
87HRAC
Angle of the equivalent harmonic-restrained Alpha Plane, A-phase,
B-phase, C-phase
Degrees [°] (±180°)
87KQ Ratio of the equivalent Alpha Plane, negative-sequence NA
87APQ Angle of the equivalent Alpha Plane, negative-sequence Degrees [°] (±180°)
87KG Ratio of the equivalent Alpha Plane, zero-sequence NA
87APG Angle of the equivalent Alpha Plane, zero-sequence Degrees [°] (±180°)
87IARTM, 87IBRTM,
87ICRTM
Restraining current magnitude in A-phase, B-phase, C-phase Per unit [pu]
87IQRTM Negative-sequence restraining current (3I2) Per unit [pu]
87IGRTM Zero-sequence restraining current (3I0) Per unit [pu]
IAWDCM, IBWDCM,
ICWDCM
DC component of local Terminal W current, A-phase, B-phase,
C-phase
Per unit [pu]
IAXDCM, IBXDCM,
ICXDCM
DC component of local Terminal X current, A-phase, B-phase,
C-phase
Per unit [pu]
87MCC Charging current multiplier NA
87WDCT1 Counter of the first stage of the 87L watchdog logic (vector report) NA
87WDCT2 Counter of the second stage of the 87L watchdog logic (vector report) NA
87 Line Current Differential Metering
87IALM, 87IBLM,
87ICLM
10-cycle averaged, aligned local current, A-phase, B-phase, C-phase
magnitude
Per unit [pu]
87IALA, 87IBLA, 87ICLA 10-cycle averaged, aligned local current, A-phase, B-phase, C-phase
angle
Degrees [°] (±180°)
87IAR1M, 87IBR1M,
87ICR1M
10-cycle averaged, aligned Remote 1 current, A-phase, B-phase,
C-phase magnitude
Per unit [pu]
87IAR2M, 87IBR2M,
87ICR2M
10-cycle averaged, aligned Remote 2 current, A-phase, B-phase,
C-phase magnitude
Per unit [pu]
87IAR3M, 87IBR3M,
87ICR3M
10-cycle averaged, aligned Remote 3 current, A-phase, B-phase,
C-phase magnitude
Per unit [pu]
87IAR1A, 87IBR1A,
87ICR1A
10-cycle averaged, aligned Remote 1 current, A-phase, B-phase,
C-phase angle
Degrees [°] (±180°)
87IAR2A, 87IBR2A,
87ICR2A
10-cycle averaged, aligned Remote 2 current, A-phase, B-phase,
C-phase angle
Degrees [°] (±180°)
87IAR3A, 87IBR3A,
87ICR3A
10-cycle averaged, aligned Remote 3 current, A-phase, B-phase,
C-phase angle
Degrees [°] (±180°)
Table 17.2 Analog Quantities List By Function (Sheet 13 of 15)
Analog Quantities Analog Quantity Description Units