SIEMENS protection relays

1 company | 32 products
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over-current protection relay / thermal / programmable / digital
over-current protection relay
7SR51

... Standard functionality •37/ 37G undercurrent protection •46 Negative sequence overcurrent protection •46BC Broken conductor detection •49 Thermal overload protection •50/ ...

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Siemens Energy automation and smart grid
differential protection relay / power / programmable / configurable
differential protection relay
7SR54

... Functions Standard Functionality can include •24 Overexcitation protection •27 Undervoltage protection – 3 phase •27Vx Undervoltage protection – Vx •37 Undercurrent protection ...

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Siemens Energy automation and smart grid
over-current protection relay / digital / programmable / configurable
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 / power / pulse / digital
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 / voltage / digital / modular
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 / voltage / distance / digital
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 / digital / programmable / configurable
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 / digital / configurable / modular
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 / thermal / power / temperature
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 / digital / differential / configurable
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