SIEMENS digital protection relays

... 7SJ85 overcurrent protection has been designed specifically for protection of feeders and lines in medium-voltage and high-voltage systems. The SIPROTEC 7SJ86 overcurrent ...

... independent measuring loops (6-system distance protection) •Several distance-protection functions can be selected: Classic, reactance method (RMD), impedance protection for transformers •Directional ...

... differential protection have been designed particularly for the selective protection of overhead lines and cables with single-ended and multi-ended infeed in medium-voltage and high-voltage systems. Transformers ...

... charging currents •Several distance-protection functions selectable as backup protection or secondary main protection: Classic, reactance •method (RMD), impedance protection ...

... synchrocheck for line protection applications with 1-pole and 3-pole tripping •Circuit-breaker failure protection for 1-pole and 3-pole tripping •Point-on- wave switching •Control, synchrocheck and ...

... transformer differential protection have been designed specifically for the protection of two and multi-winding (up to 5 sides). transformers. They are the main protection for the transformer ...

... 7SK82 and the SIPROTEC 7SK85 motor protection have been designed specifically for the protection of motors of all sizes. For the protection of generators and power-plant units the SIPROTEC ...

SIPROTEC 7SS85 The SIPROTEC 7SS85 busbar protection is a selective, safe and fast protection against busbar short circuits in medium, high, and very high voltage systems. The proven, fast and safe algorithms ...

... product interface and the relay element is withdrawable for easy replacement. Inputs and outputs 4 CT + 8 BI + 6 BO 4 CT + 13 BI + 8 BO 4 CT + 38 BI + 18 BO 4 ...

... Reyrolle 7SR45 numeric relay provides both definite time and inverse time overcurrent and earth fault protection functions ensuring sensitivity with a minimum operate setting of 0.2 ⋅ ...