Kurz- und Erdschlussanzeiger Sigma DM mit Netzmonitoringfunktion und LED Display

FAQs about Sigma DM

Have you ever had a question about our products? In this format, we answer frequently asked questions about our products in a precise & easy-to-understand way – this time about the Sigma Dм.

Everything you need to know about Sigma DM

And here are the questions and the corresponding answers about the Sigma Dм.

Question 1: What advantage does Sigma Dм offer over the well-known Sigma D/+/++ series?

Sigma Dм does not have relay contacts for remote signaling, but a communication interface with Modbus RTU.

Question 2: Is it possible to monitor a local substation with Sigma Dм?

Yes, Sigma Dм is suitable for all star point types in the medium-voltage grid. In addition, measured values such as I, V, P and Q can also be queried.

Question 3: Does Sigma Dм require an auxiliary voltage?

The fault direction functions are supplied via the current sensors. A wide-range power supply unit is available for RS485/Modbus RTU communication: 24-230V AC and DC.

Question 4: Does Sigma Dм require a voltage signal?

Yes, a voltage signal is required for the error direction display. The signal is provided via the Wega voltagev detection system.

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