Over-current protection relaySIPROTEC 7SJ series

for feeder panel-mount plug-in

SIPROTEC 7SJ81, SIPROTEC 7SJ82, SIPROTEC 7SJ85 and SIPROTEC 7SJ86 The SIPROTEC 7SJ82/7SJ85 overcurrent protection has been designed specifically for protection of feeders and lines in medium-voltage and high-voltage systems. The SIPROTEC 7SJ86 overcurrent protection has specifically been designed as backup or emergency protection for the line protection devices. With its flexibility and the high-performance DIGSI 5 engineering tool, the SIPROTEC 5 devices offer future-oriented system solutions with high investment security and low operating costs. Features Main function: •Feeder and overcurrent protection Inputs and outputs: •4 current transformers, 11 binary inputs, 9 binary outputs •4 current transformers, 18 binary inputs, 14 binary outputs •4 current transformers, 4 voltage transformers, 11 binary inputs, 9 binary outputs •4 current transformers, 4 voltage transformers, 16 binary inputs, 11 binary outputs Hardware flexibility: •Different hardware quantity structures for binary inputs and outputs are available in the 1/3 base module. 1 plug-in module position, available with large or small display Housing width: •1/3 × 19 inches Functions DIGSI 5 permits all functions to be configured and combined as required. •Directional and non-directional overcurrent protection with additional functions •Detection of ground faults of any type in compensated or isolated electrical power systems using the following functions: 3I0>, V0>, fleeting contact, cos φ, sin φ, dir. detection of intermittent ground faults and admittance •Arc protection (note the resulting communication restrictions) •Overvoltage and undervoltage protection