Orion 3.1 and Orion M1 are testing and indication devices for voltage detection, phase comparison and coupling part maintenance testing according to IEC 61243-5. They are used at LRM and HR interfaces in medium voltage switchgears.

The Orion M1 features a large LCD display with backlight. It allows easy reading of the measured values, e. g. interface current, phase angle and voltage harmonics (according to EN 50160). The integrated USB interface is used to retrieve the stored data results for further evaluation.

Besides the information on the next maintenance test and the indication of the battery status, the Orion M1 device provides the user with menu language options (German /English) and option of setting the power frequency (16,7Hz / 50Hz / 60Hz).

Capacitive interface

• Precise current measurement in μA (2 x CH)
• Voltage testing symbols for both channels
• Maintenance tests on coupling parts
• Phase-sequence indication
• Frequency setting and battery status

Voltage quality

• FFT (Fast Fourier Transformation)
• Total harmonic distortion (THD) [%]
• Up to the 40th harmonic [%]
• Bar graph for voltage harmonics [%]

Phase comparision

• Phase angle difference
• Phase balance / phase unbalance symbol
• Phase-sequence indication

According to the German accident prevention standard DGUV Regulation 3 (Table 1c), the device is subject to maintenance tests with minimum intervals of at least 6 years.