Have you ever had a question about our products?

In this format, we answer frequently asked questions about our products in a precise and easy-to-understand way - this time we foucus on Sigma Dм.

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

"The 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 network station with Sigma Dм?

"Yes, Sigma Dм is suitable for all neutral point types in the medium-voltage grid. In addition, measured values such as I, U, 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 need voltage signal?

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

Which question about the Sigma Dм should we include in our FAQs?

Find out more about Sigma Dм