JR wire-wound three-phase asynchronous motors

Description

Xi’an Lite simomotor.net Motor: JR Series Wound Rotor Three-Phase Asynchronous Motor

Model Explanation

For example, JR115-6:

• JR: Indicates a wound rotor motor.
• 11: Frame size.
• 5: Core length code.
• 6: Number of poles.

The JR series motors are available in two versions:

1. With brush lifting and short-circuiting devices.
2. Without brush lifting and short-circuiting devices.

Motor Overview

The J series medium-sized motors are designed to drive various types of machinery, including:

• Fans,
• Compressors,
• Pumps,
• Crushers,
• Ball mills,
• Cutting machine tools,
• Transport machinery, and other equipment.

They are suitable for use in:

• Coal mines,
• Machinery industries,
• Power plants, and
• Various industrial and mining enterprises as prime movers.
• The JR series is a wound rotor three-phase asynchronous motor.
• It complies with the technical conditions specified in the JB564-64 standards.

Starting Characteristics

• JS series motors:
  • Allow full-voltage direct starting.
  • Initial starting torque and current ratios to rated values are shown in Table 3.
  • If full-voltage starting is restricted by the power grid, reduced-voltage starting can be used. However, the starting torque will decrease proportionally to the square of the starting voltage.
• JR series motors:
  • During startup, a starting resistor must be connected to the rotor circuit.
  • Direct short-circuiting of the rotor windings is not permitted during startup.