Third Harmonic Based Stator Earth-Fault Protection H3Efpsef (Ansi 64Tn) - ABB RELION REX640 Technical Manual

1MRS759142 F
Name Type
ANGLE_RCA FLOAT32
RES_POWER FLOAT32
WPWDE Enum
4.2.7.12 Technical data
Table 601: WPWDE Technical data
Characteristic
Operation accuracy
1, 2
Start time
Reset time
Reset ratio
Operate time accuracy in definite time mode
Operate time accuracy in IDMT mode
Suppression of harmonics
4.2.8 Third harmonic based stator earth-fault protection
H3EFPSEF (ANSI 64TN)
4.2.8.1 Identification
Function description
Third harmonic-based stator earth-
fault protection
1
Io varied during the test, U
ted or unearthed network, the residual power value before fault = 0.0 pu, f
on statistical distribution of 1000 measurements.
2
Includes the delay of the signal output contact.
3
Start time of the function also included.
REX640
Technical Manual
Values (Range)
-180.00...180.00
-160.000...160.000
1=on
2=blocked
3=test
4=test/blocked
5=off
Value
Depending on the frequency of the measured current: f
Current and voltage:
±1.5% of the set value or ±0.002 × I
Power:
±3% of the set value or ±0.002 × P
Typically 63 ms
Typically 40 ms
Typically 0.96
3
±1.0% of the set value or ±20 ms
±5.0% of the set value or ±20 ms
-50 dB at f = n × f
IEC 61850
identification
H3EFPSEF
= 1.0 × U = phase-to-earth voltage during earth fault in compensa-
o n
Protection functions
Unit Description
deg Angle between operat-
ing angle and charac-
teristic angle
xPn Calculated residual ac-
tive power
Status
n
n
, where n = 2,3,4,5,...
n
IEC 60617
identification
dUo>/Uo3H
= 50 Hz, results based
n
±2 Hz
n
ANSI/IEEE C37.2
device number
64TN
541