Siemens siprotec SJ62 User Manual page 227

2 Functions
225
All pickup messages which usually do not occur during an intermittent ground fault are
not affected by this mechanism. Among others this includes the pickup and TRIP com-
mands of the following protective functions:
• Breaker failure protection,
• Overload protection,
• Frequency protection and
• Voltage protection.
The pickup signals of these functions will still be logged immediately. A TRIP
command of one of these protective functions will cause the buffered messages to be
cleared since no connection exists between tripping function and buffered message.
A fault event is cleared when the time T-reset has expired or the TRIP command
„IEF Trip" has been terminated.
Terminating a fault event for the intermittent ground fault protection thus is a special
case. It is the time T-reset that keeps the fault event opened and not the pickup.
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015