Tracking Frequency - GE T60 Instruction Manual

METERING

6.4.6 Tracking frequency

ACTUAL VALUES  METERING  TRACKING FREQUENCY
 TRACKING FREQUENCY

The tracking frequency displays here. The frequency is tracked based on the selection of the reference source with the
FREQUENCY AND PHASE REFERENCE
System section of chapter 5 for details.
6.4.7 Frequency rate of change
ACTUAL VALUES  METERING  FREQUENCY RATE OF CHANGE 1(4)
 FREQUENCY RATE
 OF CHANGE 1
The metered frequency rate of change for the frequency rate of change elements is shown here.
6.4.8 FlexElements
ACTUAL VALUES  METERING  FLEXELEMENTS  FLEXELEMENT 1(16)
 FLEXELEMENT 1

The operating signals for the FlexElements are displayed in pu values using the following definitions of the base units.
Table 6-2: FlexElement base units
Base unit
BREAKER ACC ARCING AMPS
(Brk X Acc Arc Amp A, B, and C)
6
BREAKER ARCING AMPS
(Brk X Arc Amp A, B, and C)
DCmA
FREQUENCY
FREQUENCY RATE OF CHANGE
PHASE ANGLE
POWER FACTOR
RTDs
SENSITIVE DIR POWER
(Sns Dir Power)
SOURCE CURRENT
SOURCE ENERGY
(Positive and Negative Watthours,
Positive and Negative Varhours)
SOURCE POWER
SOURCE THD & HARMONICS
SOURCE VOLTAGE
SYNCHROCHECK
(Max Delta Volts)
VOLTS PER HERTZ
XFMR DIFFERENTIAL CURRENT
(Xfmr Iad, Ibd, and Icd Mag)
6-24
TRACKING FREQUENCY:

60.00 Hz
setting in the
SETTINGS  SYSTEM SETUP  POWER SYSTEM
FREQUENCY RATE OF

CHANGE1: 0.00 Hz/s
FLEXELEMENT 1

OpSig: 0.000
Description
2
BASE = 2000 kA × cycle
2
BASE = 1 kA × cycle
BASE = maximum value of the DCMA INPUT MAX setting for the two transducers configured
under the +IN and –IN inputs.
f = 1 Hz
BASE
df/dt = 1 Hz/s
BASE
ϕ
= 360 degrees (see the UR angle referencing convention)
BASE
PF = 1.00
BASE
BASE = 100°C
P = maximum value of 3 × V
BASE
for the sensitive power directional element(s).
I = maximum nominal primary RMS value of the +IN and –IN inputs
BASE
E = 10000 MWh or MVAh, respectively
BASE
P = maximum value of V
BASE BASE
BASE = 1%
V = maximum nominal primary RMS value of the +IN and –IN inputs
BASE
V = maximum primary RMS value of all the sources related to the +IN and –IN inputs
BASE
BASE = 1.00 pu
I = maximum primary RMS value of the +IN and -IN inputs
BASE
(CT primary for source currents, and transformer reference primary current for transformer
differential currents)
× I for the +IN and –IN inputs of the sources configured
BASE BASE
× I for the +IN and –IN inputs
BASE
T60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 6: ACTUAL VALUES
menu. See the Power