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ASYNCHRONOUS
SLIP RING MOTORS

ASYNCHRONOUS
SLIP RING MOTORS

TMKHV-Δ Series

Medium Voltage Three Phase Slip Ring Motors
TECHNICAL DATA

Slip Ring Motors

Reliable Solutions for High Inertia and High Torque Applications

Slip ring motors are designed for applications involving high inertia loads or high starting torque, and for installations where starting current limitations exist in the power supply network. Typical applications include ball mills, crushers, fans, exhausters, shredders, and grinders, primarily in the cement, mining, and steel industries, among others.

Standard Features

  • Voltage supply: Sinusoidal, from 3 kV to 13,800 V
  • Pole configurations: Manufactured from 4 to 12 poles
  • Frame construction:
    • Cast iron frames for sizes 315 to 450
    • Welded steel plates for frame sizes 500 and above

Cooling Methods

  • Open self-ventilated
  • Self-ventilated with ducts (air inlet and outlet)
  • Forced ventilated, with ducts for air inlet and outlet
  • Forced ventilation with top-mounted cooling system
  • Self-ventilated with air-to-air heat exchanger (top-mounted)
  • Self-ventilated with air-to-air heat exchanger (around the stator)
  • Forced ventilation in internal and external air circuits with air-to-air heat exchanger
  • Air-to-water heat exchanger
  • Air-to-water heat exchanger with forced ventilation in internal air circuit





Mechanical and Electrical Specifications

  • Mounting: B3 (horizontal foot-mounted)
  • Degree of protection: IP55
  • Duty cycle: S1 (continuous duty)
  • Insulation class: F
  • Service factor: 1.0
  • Temperature rise: 80°C
  • Ambient temperature: up to 40°C
  • Altitude: up to 1,000 m

Thermal Protection

  • PT100 temperature sensors:
    • 1 per bearing, 3-wire configuration
    • 2 per phase, 3-wire configuration

Accessory and Auxiliary Equipment

  • Two auxiliary terminal boxes:
    • One for signal accessories
    • One for power-requiring accessories (e.g., space heaters)
  • Single-phase space heater for anti-condensation
  • Grease-lubricated bearings:
    • For 4-pole motors up to frame 560, at 50 Hz and 60 Hz
    • Standard for 6-pole motors and above

Construction and Protection Details

  • Paint finish: Acrylic polyurethane, polyamide epoxy (Final coat: Blue RAL 5010)
  • Stainless steel nameplate
  • Grounding lugs on frame and terminal box
  • Bronze slip rings for durability
  • Rotor terminal box separated from stator terminal box
  • Compartment for slip rings and brushes, isolated from stator and rotor, located behind the non-drive end bearing
  • Three connection terminals in the power terminal box for high voltage, equipped with terminal block