YZRDW/YZRSWJANGTE
YZRDW/YZRSW Tower Crane Hoist Motors with Eddy-Current Brake .
YZRDW(F), YZRSW(F) Series Eddy-Current Brake Wound-Rotor Two-Speed Three-Phase Asynchronous Motors for Tower Crane Hoisting
YZRDW(F) and YZRSW(F) are two-speed wound-rotor motors with an integrated eddy-current brake for the hoisting mechanisms of medium and large tower cranes. They offer smooth speed control, low starting current and high overload capacity, and withstand frequent starts and shocks. The YZRDW(F) has one pole-changing winding and 3 slip rings, the YZRSW(F) separate windings and 6 slip rings. Ratings: 15–60 kW, 4/8 poles, frames 200–280, 380 V, 80 V DC brake, motor duty S3-40 %, brake S3-15 %. IP44, class F or H, IC411 or IC416.
Applications
- Hoisting mechanisms of medium and large tower cranes
- Hoisting winches of construction cranes
- Hoisting mechanisms with frequent starts and shock loads
Specifications
- Power range
- 15–60 kW
- Frame sizes (shaft height)
- 200–280
- Poles
- two-speed, 4/8
- Voltage
- 380 V, 50 Hz; eddy-current brake 80 V DC
- Duty
- motor S3-40 %, brake S3-15 %
- Rotor
- YZRDW(F): 3 slip rings; YZRSW(F): 6 slip rings
- Protection / insulation
- IP44, class F or H
- Cooling / mounting
- IC411 or IC416; IM B3