Routine Checks and Maintenance
9-2
7SJ63 Manual
C53000-G1140-C120-1
9.1
General
Siemens numerical protective and control SIPROTEC
®
4 devices require no special
maintenance. All measurement and signal processing circuits are fully solid state. All
input modules are also fully solid state. The output relays are hermetically sealed or
provided with protective covers.
Since the device is almost completely self-monitored, from the measuring inputs to the
output relays, hardware and software problems are automatically reported. The self-
monitoring ensures the high availability of the device and generally allows for a cor-
rective rather than preventive maintenance strategy. Therefore maintenance checks
in short intervals are not required.
Operation of the device is automatically blocked when a hardware failure is detected.
The “live status” contact drops out to provide an alarm. Messages related to the prob-
lem are given in the Event Log. If a problem is detected in the external measuring cir-
cuitry, the device will typically give a message in the Event Log. The output contacts
are programmable; therefore, alarms for device failures can be configured by the user.
Recognized software failures result in the resetting and restarting of the processor
system. If such a failure is not resolved by the restart, further restarts are initiated. If a
problem is still present after three restart attempts, the device is automatically taken
out of service. Then the “live status” contact drops out to provide an alarm and the red
“ERROR” LED on the front panel illuminates.
The reaction of the device to failures and problems can be viewed in chronological se-
quence in the Event Log. The messages can be used to diagnose the problem. See
Sub-section 7.1.1.
When the device communicates with a substation controller (SCADA), the event and
alarm messages are also sent over the serial interface.
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Содержание siprotec 7SJ63
Страница 16: ...xiv 7SJ63 Instruction Manual C53000 G1140 C120 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 28: ...Introduction 1 12 7SJ63 Manual C53000 G1140 C120 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 112: ...SIPROTEC 4 Devices 4 38 7SJ63 Manual C53000 G1140 C120 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 346: ...Functions 6 182 7SJ63 Manual C53000 G1140 C120 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 494: ...Technical Data 10 48 7SJ63 Manual C53000 G1140 C120 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 604: ...Index Index 6 7SJ63 Instruction Manual C53000 G1140 C120 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...