Overcurrent protection for low-power current transformer
The SIPROTEC 7SJ81 provides 4 low-power current transformer inputs and optionally 3 low-power voltage transformer inputs. With the same low-power current transformer (LPCT) a wide range of primary rated line currents can be covered. Objects with rated currents in the range of 20 A to 2500 A can be protected when using low-power current transformers.
![Overcurrent protection for low-power current transformer – SIPROTEC 7SJ81 Overcurrent protection for low-power current transformer – SIPROTEC 7SJ81](https://assets.new.siemens.com/siemens/assets/api/uuid:901daa25-51e5-41f5-b4fb-07f675748331/width:100/quality:low/Overcurrent-protection-for-low-power-current-transformer-SIPROTEC-7SJ81.png)
The SIPROTEC 7SJ81 provides 4 low-power current transformer inputs and optionally 3 low-power voltage transformer inputs. With the same low-power current transformer (LPCT) a wide range of primary rated line currents can be covered. Objects with rated currents in the range of 20 A to 2500 A can be protected when using low-power current transformers.