YR Series HV Wound-Rotor Motor

Overview

The YR high-voltage wound-rotor three-phase asynchronous motor (frame H355–H630) connects its rotor to external starting resistors via slip rings, delivering high starting torque at low starting current. It suits sites where supply capacity is insufficient for direct cage-motor starting, long or frequent starting, and applications needing small-range speed adjustment.

Applications

• Mining: ball mills, hoists, winders, crushers
• Metallurgy: rolling mills, wire drawing, smelting auxiliaries
• General: compressors, large fans, pumps under heavy starting

Technical Highlights

• Wound rotor with external resistors: high torque, low current start
• Smooth start, minimal grid impact, ideal for weak networks
• Class F insulation rated by Class B rise for reliability
• Rugged structure for heavy load and frequent start/stop
• Small-range speed adjustment for process needs

Selection & Ordering

Rated voltage 6kV / 10kV. Specify model, mounting (IMB3), rated power, protection, cooling and insulation class. Belt drives are forbidden for 2-pole and 4-pole motors unless agreed with the manufacturer.