Features/Benefits:

Excellent Electrical Performance

• Higher efficiency than any previous design

• High power factor

• Superior starting characteristics

Enclosure Options

• ODP, WP1. WP2/IP24

• TEAAC, TEWAC, TESV/PIPE/IP55

New Compact Design derived Through

• Extensive electrical magnetic field analysis

• Heat transfer analysis

• Improved ventilation

Lower Noise & Less Vibration

• Advanced techniques in core/frame construction

Advanced VPI Insulation System

• Compatible with VFD voltage supplies and effects of surge voltages

Excellent In-Service Availability

• Low operating and maintenance costs

• High reliability

• Oil-lubricated sleeve bearings or anti-friction bearings

• Extended re-greasing intervals

Designs for all Applications and Industries

Compatible with Variable Frequency Drive Applications

Fabricated Copper Bar Rotor Construction

21-L series: Combining over 100 years of experience with innovative new technology

makes the series the right choice for the demanding needs of today’s industry.

Superior Electrical Performance, Unsurpassed Reliability

The 21-L series three-phase high-voltage motors are at the leading edge of motor

technology.

• Designs up to 18.500 kW (25.000 hp)

• From 2 pole up to 24 pole designs

• 2.300 – 13.800 Volts, 50 or 60 Hz

• Wide variety of enclosures

• Rugged, high quality fabricated steel construction

• Frame sizes from 450 mm ~ 900 mm shaft height

• Designed to be able to meet worldwide standards (NEMA, IEC, BS, AS and others)

21-H Series Motors Features and Benefits

Design Feature

• Excellent Electrical Design

• Extensive electrical magnetic field analysis

• Heat transfer analysis

• Improved ventilation

• Unique Modular Construction

• Advanced techniques in core and frame construction

• Advanced VPI Insulation System

• Culture of quality and continuous improvement

Customer Benefit

• Increased efficiency

• Higher power factor

• Superior starting characteristics,

• Compact Design requires smaller space and lighter foundation,

• Easy motor enclosure conversions between WP2. TEAAC, TEWAC.

• Lower noise and vibrations address health and reliability concerns,

• Can withstand higher surges of power,

• Low operating and maintenance costs,

• High reliability.

• Extended re-greasing intervals.

The 21-H Series three-phase high-voltage motors deliver up to 8.000 kW with

rugged steel construction, copper bar rotors, and multiple cooling configurations

—offering high efficiency, low noise, and seamless compatibility with variable

frequency drives across all industrial applications.

High-Efficiency Motors Built for Global Demands

The 21-H series three-phase high-voltage motors are designed for all applications

and industries. The 21-H Series is compatible with variable frequency drive applications.

• Up to 8.000 kW (10.708 HP)

• WP2. TEAAC, TEWAC Rugged, fabricated steel construction

• Designed to meet worldwide standards

• Fabricated copper bar rotor construction

• C5 steel lamination

• High Efficiency

• Low noise

Compact, Efficient Motors Built for Global Standards

21-FII series three-phase high-voltage motors are designed for all

applications and industries. Built on IEC frame sizes with cast aluminum

squirrel cage rotors, 21-Fll motors meet test performances in compliance

with IEC, NEMA, BS and AS. The 21-L Series is compatible with variable

frequency drive applications.

• Efficient performance reduces cost of ownership

• Compact size reduces installation costs

• Well-designed frame construction provides low noise and vibration

• High quality insulation system provides electrical and mechanical reliability

21-FII Series Motors Features and Benefits

Design Feature

• Aluminum Die Cast Rotor.

• Cast iron fin frame with optimized cooling surface.

• Bearing housing designed to permit longer re-greasing intervals.

• Main terminal box can be installed in multiple locations and positions.

Customer Benefit

• High reliability.

• Frequent starting duty.

• Lower rotor inertia.

• Higher efficiency.

Reduced bearing maintenance.

Re-greasing allowed during motor operation.

Terminal box located on top of the frame can be rotated in increments of  90° .

The terminal box can also be mounted at an angle (left and right of the frame)

when required for side mount cable entry.

Features & Benefits

Excellent Electrical Performance

• Electromagnetic field analysis

• Heat conduction analysis

• Air flow system analysis

Insulation & Cooling

• Angular contact ball bearings (self-cooled)

• Spherical roller thrust bearings (self-cooled, air-cooled, water-cooled, oil-cooled

• Tilting pad thrust bearings (air-cooled, water-cooled, oil-cooled

• Drip-proof, NEMA Weather Protected

Noise Reduction

• The latest technology reduces noise to 80 dBa and less, and vibration level to 1.8 mm/sec

• Lower noise and vibrations address health and reliability concerns

Efficiency

• Increased efficiency

• Higher power factor

• Superior starting characteristics

Insulation

• Advanced VPI Insulation System

• Greater capacity of Improved insulation withstanding higher surges of power

• Inverter drive operation is an option

Introducing the VLL Series: High-Capacity Vertical Motors

The 21-VLL series three-phase medium-voltage motors are designed

for large capacity applications.

• UP to 6500 kW (8.700 HP)

• WPII, TEAAC and TEWAC and custom frames

• Designed to meet worldwide standards

• Fabricated steel plate construction

• C5 steel lamination

Engineered for Reliability and Serviceability

The 21-VLL series is designed with features that maximize reliability while

simplifying maintenance and operation. Application-specific thrust bearings

and optional non-reversing ratchets ensure upper bearing performance

under varying loads. A precision-built, split-core stator reduces core loss and

assembly time, while the copper bar rotor is optimized for pump applications

with enhanced starting torque and robust construction.

Modular cooling options—including water-to-air, air-to-air (IP55), and open air

circuits—support a wide range of operating environments with durable,

corrosion-resistant materials.