SIEMENS digital protection relays

1 company | 28 products
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over-current protection relay
over-current protection relay
7SR51

... 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 ...

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Siemens Energy automation and smart grid
over-current protection relay
over-current protection relay
7SJ81/82/85/86 series

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

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Siemens Energy automation and smart grid
distance protection relay
distance protection relay
7SA82/86/87 series

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

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Siemens Energy automation and smart grid
differential protection relay
differential protection relay
7SD82/86/87 series

... 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 ...

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Siemens Energy automation and smart grid
differential protection relay
differential protection relay
7SL82/86/87 series

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

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Siemens Energy automation and smart grid
trip circuit protection relay
trip circuit protection relay
7VK87

... 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 ...

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Siemens Energy automation and smart grid
differential protection relay
differential protection relay
7UT82/85/86/87 series

... 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 ...

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Siemens Energy automation and smart grid
electric motor protection relay
electric motor protection relay
7SK82/85, 7UM85 series

... 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 ...

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Siemens Energy automation and smart grid
voltage protection relay
voltage protection relay
7SS85

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

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Siemens Energy automation and smart grid
over-current protection relay
over-current protection relay
7SR45

... 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 ⋅ ...

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Siemens Energy automation and smart grid