Zwei Kurz- und Erdschlussanzeiger auf einem Bild. Links der Sigma F+E 3 und rechts der Sigma DM mit Fehlerrichtungsanzeige

Targeted troubleshooting in the distribution grid: Sigma series at a glance

The Sigma series enables precise fault location in distribution networks with phase-selective short-circuit and earth fault indication as well as flexible remote transmission options.

Innovative solutions for complex networks: discover the Sigma series

In a world increasingly shaped by decentralized energy sources, grid operators face the challenge of efficiently monitoring their distribution networks and quickly resolving faults. The Sigma series by Horstmann provides the perfect solution for targeted fault detection in distribution networks.

Why choose the Sigma series?

  1. Phase-selective short-circuit and earth fault indication: Optimal support for fault detection in various network configurations.

  2. Broad usability: Suitable for new installations and retrofitting existing systems.

  3. Advanced Remote Transmission Technologies: From relay contacts and RS485 with Modbus RTU to LoRaWAN – everything for improved grid stability.

Find out more in our blog post.

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