Trip time
Fault resistance
R
Trip
R
Alarm
IEC11000002-1-en.vsd
IEC11000002 V1 EN-US
Figure 158: Trip time characteristic as function of fault resistance
8.8 100% stator earth fault protection, injection based
STTIPHIZ (64S)
GUID-168591A0-89CC-4F8B-8B7C-C0CDEAF2DD4B v1
8.8.1 Identification
GUID-949F59D4-5AD5-40D9-B275-3542517C988F v1
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
100% stator earth fault protection,
injection based
STTIPHIZ Rse< 64S
8.8.2 Application
GUID-ACF8F9DC-3A49-4F6E-9252-668BB5C228D0 v2
The 100% stator earth-fault protection (STTIPHIZ, 64S
) is used to detect the ground
faults in the stator windings of generators and motors. STTIPHIZ (64S) is applicable
for generators connected to the power system through a unit transformer in a block
connection. An independent signal with a certain frequency different from the
Section 8 1MRK 502 071-UUS A
Impedance protection
320 Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Application manual
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