The intelligent Sigma Dм short-circuit and earth fault indicator with clear fault direction display makes medium-voltage switchgear to data suppliers. to data suppliers. This is equipped with a This is equipped with a RS485 interface (Recommended Standard) for transmitting measured values and error messages via the Modbus RTU protocol .

Product features
✅ CT powered directional short-circuit and directional earth fault indicator for all distribution networks / neutral point treatments
✅ Earth fault detection with up to six different earth fault detection methods, also in combination
RS485 remote signalling with Modbus RTU
✅ Fully automatic voltage calibration
✅ Easy and flexible parameter setting via DIP switch or USB port
✅ Event memory for fault evaluation
✅ Multicolour LED status display
✅ Sigma Explorer Software: Commissioning, parameterisation and reading the event memory via front accessible USB port
✅ With wide-range power supply 24 V to 230 V AC/DC

In which application is the Sigma Dм suitable? You can find a summary of the special features and benefits on our website.