Siemens siprotec 7SD5

1.3 Characteristics
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7SD5 Manual
C53000-G1176-C169-1
• Continuous calculation and display of measured quantities on the front of the device
Indication of measured quantities of the remote line end(s)
• Fault event memory for the last 8 network faults (faults in the power system), with
real time stamps (1 ms resolution)
• Fault recording memory and data transfer for analog and user configurable binary
signal traces with a maximum time range of 15 s, synchronized between the
devices of the line protection system
• Statistics: counter with the trip commands issued by the device, as well as recording
of the fault current data and accumulation of the interrupted fault currents;
• Communication with central control and memory components possible via serial in-
terfaces (depending on the individual ordering variant), optionally via electrical
RS485 bus connection, fiber optic cable or a modem connection
• Commissioning aids such as connection and direction checks as well as interface
check and circuit breaker test functions
• The „IBS-Tool“ (installed on a PC or a laptop) widely supports the testing and com-
missioning procedure. The communication topology of the line protection and com-
munication system, phasor diagrams of all currents and (if applicable) voltages at
all ends of the line protection system, as well as the differential protection and dis-
tance protection characteristics, are displayed as a graph.
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