DRR20, automatic correction of the rotating field, Phase Sequence-Change Relay with integrated monitoring of undervoltage and asymmetry, 3 AC 400 V,manufacturer code: P222551
Universal-Voltage-Relay for monitoring of over- and undervoltage in DC-, AC- and 3-phase-voltages incl. monitoring of phasesymmetry and phase-sequence, AC/DC 24-240 V,manufacturer code: S222276
Grid- and Plant Protection According to CEI 0-21 (Italy) and DEWA-standard (Dubai) (DRRG), with integrated Vector-Shift Relay, AC 400 V mit und ohne N,manufacturer code: S222300