Toshiba LQ300 Series Converter Density (Consistency) Meter for LQ300

The Toshiba LQ300 is a heavy‑duty iron‑core reactor (inductor) installed on the input or output of variable frequency drives (VFDs). Its purpose is to reduce electrical noise, limit current spikes, and protect motors and drives from harmonics and voltage transients. The warning label about using eyebolts is typical of reactors due to their solid laminated steel cores and high weight. Typical function • Input line reactor: Reduces harmonics, limits inrush current, and protects the VFD from power line disturbances • Output/load reactor: Protects motor insulation, reduces dv/dt, and limits reflected wave voltage on long motor cables Key characteristics (typical for Toshiba LQ series) Manufacturer: Toshiba Series: LQ Model: LQ300 Product type: Line / load reactor (inductor) Phase: 3‑phase Realistic working estimate • Nominal current: ~300 A • Usual continuous range: 250–320 A • Typical voltage class: 480 VAC systems • Phase: 3‑phase Core type: Laminated iron core Enclosure: Steel enclosure, ventilated Mounting: Floor‑mount / base‑mount Cooling: Natural air convection Application: Variable frequency drive systems, motor protection Duty: Continuous Industry use: Industrial automation, motors, pumps, fans, compressors Please review pictures carefully and let us know if you have any questions!