New Compact Protection Relays - Siemens

Siemens enhances its portfolio with the new SIPROTEC Compact 7SJ80 and 7SK80 protection relays that share a brand - new and powerful hardware with well proven algorithms from SIPROTEC 4. The 7SJ80 relays can be used for line/feeder protection of high and medium voltage networks with grounded, low-resistance grounded, isolated or a compensated neutral point.
The multifunctional 7SJ80 provides a directional overcurrent relay in a compact housing.
T he 7SK80 was designed as a dedicated motor protection relay for asynchronous motors of all sizes. Both can be used as a backup relay to a transformer differential relay. Both relays support IEC 61850 with GOOSE messages and integrated redundancy (electrical or optical).
The relays feature flexible protection functions. Twenty additional protection functions can be created by the user. For example, a rate-of-change of frequency function or a reverse power function (ANSI#32R) can be created.

BeijingSifang June 2016