GE L90

CHAPTER 6: ACTUAL VALUES METERING
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 6-23
6
The harmonics are a percentage of the fundamental signal obtained as a ratio of harmonic amplitude to fundamental
amplitude multiplied by 100%. The total harmonic distortion (THD) is the ratio of the total harmonic content to the
fundamental:
Eq. 6-4
6.4.4 Sensitive directional power
ACTUAL VALUES  METERING  SENSITIVE DIRECTIONAL POWER  DIRECTIONAL POWER 1(2)
The effective operating quantities of the sensitive directional power elements display here. The display is useful to calibrate
the feature by compensating the angular errors of the CTs and VTs with the use of the
RCA and CALIBRATION settings.
6.4.5 Synchrocheck
ACTUAL VALUES  METERING  SYNCHROCHECK  SYNCHROCHECK 1(10)
If synchrocheck or a setting is "Disabled," the corresponding actual values menu item does not display.
Voltage harmonics are calculated only for Wye connected phase VTs. Ensure that the
SYSTEM SETUP  AC INPUTS
 VOLTAGE BANK F5  PHASE VT XX CONNECTION
setting is “Wye” to enable voltage harmonics metering.
 DIRECTIONAL
 POWER 1

DIRECTIONAL POWER 1
3Φ: 0.000 W
 SYNCHROCHECK 1


SYNCHROCHECK 1 DELTA
VOLT: 0.000 kV

SYNCHROCHECK 1 DELTA
FREQ: 0.00 Hz

SYNCHROCHECK 1
DELTA PHASE: 0.0°

SYNCHROCHECK 1
SYNSCP D_PH: 0.0°

SYNCHROCHECK 1
V1 MAG: 0.000 kv

SYNCHROCHECK 1
V1 ANG: 0.0°

SYNCHROCHECK 1
V2 MAG: 0.000 kV

SYNCHROCHECK 1
V2 ANG: 0.0°

SYNCHROCHECK 1 PROJ
V2 MAG: 0.000 kV

SYNCHROCHECK 1 PROJ
V2 ANG: 0.0°

SYNCHROCHECK 1 PROJ
DELTA_PHASE: 0.0°

SYNCHROCHECK 1 PROJ
SYNSCP D_PH: 0.0°