SIPROTEC 7SJ602
Multifunction overcurrent and protection relay
Description
The SIPROTEC 7SJ602 is a numerical overcurrent relay which, in addition to its primary use in radial distribution networks and motor protection, can also be employed as backup for line, transformer and generator differential protection. The SIPROTEC 7SJ602 provides definite-time and inversetime overcurrent protection along with overload and unbalanced-load (negativesequence) protection for a very comprehensive relay package.
For applications with earth-current detection two versions are available: One version with four current transformer inputs for nondirectional earth (ground) fault detection and a second version with three current inputs (2 phase, 1 earth/ground) and one voltage input for
earth (ground) fault detection.
The flexible communication interfaces are open formodern communication architectures with control systems.
Download catalogue, manual, and other detail information.
Function overview
Feeder protection
Overcurrent-time protection
Sensitive earth-fault detection
Directional sensitive earth-fault detection
Displacement voltage
Disk emulation
Overload protection
Breaker failure protection
Negative-sequence protection
Cold load pickup
Auto-reclosure
Trip circuit supervision
Measuring functions
Operational measured values I, V
Power measurement P, Q, S,Wp,Wq
Slavepointer
Mean values
Monitoring functions
Fault event logging with time stamp (buffered)
8 oscillographic fault records
Continuous self-monitoring
Communication interfaces
System interface (IEC 60870-5-103 protocol, PROFIBUS-DP, MODBUS RTU/ASCII)
Front interface for DIGSI 4