numerical overcurrent,motor and overload protection relay block 7SJ600 With (1NO+1NC)

Features and technical specifications:

1. Motor Protection
2. CT inputs : 3 No’s
3. Binary inputs : 3 No
4. Binary output’s : 3 NO
5. RS485 Communication Port

The following functions are available

1. Feeder protection
   • Overcurrent-time protection
   • Ground-fault protection
   • Overload protection
   • Negative-sequence protection
   • Cold load pickup
   • Auto-reclosure
   • Trip circuit supervision
2. Motor protection
   • Starting time supervision
   • Locked rotor
3. Monitoring functions
   • Fault event logging with time stamp (buffered)
   • 8 oscillographic fault records
   • Continuous self-monitoring

This numerical overcurrent,motor and overload protection relay block is easily insert in your schematic diagram and connect as you like way.

The SIPROTEC 7SJ600 provides definite-time and inverse-time over current protection along with overload and negative sequence protection for a very comprehensive relay package. In this way, equipment such as motors can be protected against asymmetric and excessive loading. Asymmetric short-circuits with currents that can be smaller than the largest possible load currents or phase interruptions are reliably detected. The SIPROTEC 7SJ600 is a numerical over current relay which, in addition to its primary use in radial distribution networks and motor protection, can also be employed as backup for feeder, transformer and generator differential protection. The SIPROTEC 7SJ600 provides definitetime and inverse-time over current protection along with overload and negative-sequence protection for a very comprehensive relay package. In this way, equipment such as motors can be protected against asymmetric and excessive loading. Asymmetric short-circuits with currents that can be smaller than the largest possible load currents or phase interruptions are reliably detected.