Buying a Ruggedized Motor Drive: 3-Phase or Single-Phase

Buying a ruggedized electric motor drive, 3-phase or single-phase is no easy task these days. Ruggedized motor drives fall within the overall category of variable frequency drives, but the similarity stops there. Ruggedized motor drives are designed to meet extreme operating conditions for temperature, altitude, shock, etc. Off-the-shelf motor drives are designed to meet general commercial and industrial operating conditions and to withstand common carrier and UPS shipping conditions.