Motors

  • 4/6 Pole Synchronous
  • Slow Speed Synchronous

4 & 6 Pole Synchronous Motors

Horizontal Synchronous Motor, 6000HP/1800 RPM for propane storage & pumping station                       

                                                                                          Click here for download

Hyundai Ideal Electric Co., in business since 1903, specializes in the design and manufacture of large, to-order electric motors, generators, switchgear and controls.

Hyundai Ideal Electric Co. has built synchronous motors for over seventy years. Our expertise, combined with high quality materials and manufacturing processes, results in a reliable, cost-effective motor with high performance and low operating costs.

Benefits

Higher Efficiency

Synchronous motors are typically 1% to 2% more efficient than induction motors. This results in a substantial reduction in operating costs over the life of the motor.

Eliminate Demand Charges

Synchronous motors consume no reactive power, avoiding utility demand charges that are common with induction motors. A synchronous motor running at unity or leading power factor actually supplies reactive power back to the power system, improving the operations of a plant’s electrical system and reducing operating costs.

High Torque

Many synchronous motors are designed with torque values greater than those specified in NEMA. Designing and manufacturing a motor to the application allows for trouble free operation without downtime and the high costs associated with loss of production.

Power System

Because synchronous motors typically have lower inrush current than induction motors, synchronous motors minimize the voltage dip on the power supply system when starting. This may eliminate the brown outs and resulting computer equipment shutdowns that can occur while starting large induction motors.

Increased Output

While running at synchronous speed there is zero slip. This increases the output of the driven equipment.

Mechanical Features

Rotor Construction

Quality materials and manufacturing techniques optimize stability and allow Hyundai Ideal Electric Co. motors to perform dependably under all conditions. Vibration problems are minimized with a very rigid frame construction, and by pre-balancing the rotor.

Rotor Shafts are forged high-quality steel. HIEC 4-pole designs use integral pole laminations that are bolted together under pressure before being shrunk-fit and keyed to the shaft.

Typically on 6 thru 10 pole machines, the synchronous poles are dovetailed to the rotor hub. 12 pole and above are bolt on pole style connected to a cylindrical hub.

Bearings

Hyundai Ideal Electric Co. offers heavy duty sleeve bearings as standard. Our bearing design can accommodate thrust, if required, and can be flood oil lubricated or self-lubricated depending on the rating or application.

Enclosures

A variety of enclosures is available for every type of installation or classification including those that meet NEMA/IEC standards.

Electrical Features

Sealed Insulation System

HIEC offers full Class F insulation, epoxy VPI system, from our in-house VPI facility.

Brush type or Brushless Excitation systems can be provided. The brushless exciter is mounted outboard of the bearings for easy maintenance. An adjustable DC power supply for the exciter field, pull-out protection, and incomplete sequence protection make HIEC’s system unique. In addition, the slip and sensitivity adjustments are on the synchronizer rather than on the rotating assembly.

Motor Ratings

Hyundai Ideal Electric Co. can manufacture both vertical and horizontal synchronous motors ranging from 500 HP thru 30,000 HP with RPM 1800 and below. Supply voltages ranging from 400v thru 15,000v.

Industry Standards

HIEC manufactures motors to meet all current industry standards, including IEEE, NEMA, API and IEC. CSA labeling and ATEX/CENELEC approved designs are also available.

HIEC routinely designs motors for hazardous operation in Division 2 / Zone 2 environments.

Testing

Hyundai Ideal Electric Co. motors have been rigorously tested in our factory – and, more importantly, in the field – to ensure each motor is mechanically and electrically sound. Hyundai Ideal Electric Co. has responded to the demand for increased testing by adding a state-of-the-art test floor to our manufacturing facility. Our test floor allows for the full-load testing of vertical and horizontal synchronous motors at voltages from 400 volts to 15 kV and at 60 Hz and 50 Hz.

For More Information

For more information on synchronous motors, or any other HIEC product, contact Hyundai Ideal Electric Co. headquarters or your local HIEC representative.

Slow Speed Synchronous Motors

4500 HP, 720 RPM, 13,800 Volt Vertical Synchronous Pump Motors                     

                                                                                     Click here for download

Hyundai Ideal Electric Co., in business since 1903, specializes in the design and manufacture of large, to-order electric motors, generators, switchgear and controls.

Hyundai Ideal Electric Co. has built synchronous motors for over seventy years. Our expertise, combined with high quality materials and manufacturing processes, results in a reliable, cost-effective motor with high performance and low operating costs.

Benefits

Higher Efficiency

Synchronous motors are typically 1% to 2% more efficient than induction motors. This results in a substantial reduction in operating costs over the life of the motor.

Lower Utility Charges

Synchronous motors consume no reactive power, eliminating utility demand charges that are common with induction motors. They can even be designed to put VAR’s back into the electrical system.

Operating Flexibility

Synchronous motors can take large torque and load spikes without pulling out of step, providing greater operating flexibility.

Special Applications

Hyundai Ideal Electric Co. offers both vertical and horizontal motor configurations suitable for a wide range of applications. Following are two examples of how our motors are customized to the applications.

Reciprocating Compressors

When motors are used to drive reciprocating compressors, load pulsations can run as high as 200%. Hyundai Ideal Electric Co. can increase the hub (rotor) size to raise the motor WR² so that current pulsations are reduced without the need for a separate flywheel.

Chipper and Ball Mill

Shock loads are an important consideration in chipper and ball mill applications. Using synchronous motors with leading power factor and over-exciting the field, the motor can ride through momentary torques as high as 300%.

Mechanical Features

Rotor Shaft

Hyundai Ideal Electric Co. rotor shafts are forged AISI 1040 or 4140 series steel. Rotor hubs use fabricated A36 steel. This usually provides ample inertia for applications with high shock loads or torque pulsations.

Rotor Poles

The rotor poles are stamped out of 16-gauge steel, stacked, and riveted together. Poles are individually wound under tension using wire with Double-Dacron glass insulation with epoxy applied between layers.

Rotor Bars

Rotor bars use a floating cage construction to allow for thermal expansion, reducing mechanical stress during start-up. They are connected using heavy copper to allow ample cross section for current circulation.

Bearings

Hyundai Ideal Electric Co. slow-speed synchronous motors typically use heavy-duty, self-lubricated, split-sleeve, bracket or pedestal-mounted bearings.

Stator Shift

Stator shift is an important consideration when specifying slow speed motors. Since many applications involve harsh environments, the internal cooling passages in the motor need to be cleaned regularly to remain clear. Obstructed air passages may raise the operating temperature and the chance of premature failure. By supplying an extra long shaft, the stator can be slid to expose both the stator and rotor windings, simplifying the routine maintenance that can extend the motor life.

Electrical Features

Sealed Insulation System

HIEC offers full Class F insulation, epoxy VPI system, from in-house VPI facility.

Brush type or Brushless

Hyundai Ideal Electric Co.’s brushless exciter uses a high-frequency design to ensure minimum ripple in the rectified DC current supplied to the motor field and to provide faster response times. The AC current is rectified by hermetically sealed diodes, which can be fused and supplied in parallel for critical applications.

If the application is better suited to static brush type motors, Hyundai Ideal Electric Co. can offer static excitation packages. This is common on applications that require motors with less than 300 RPM.

Industry Standards

Hyundai Ideal Electric Co. manufactures motors to meet all current industry standards, including NEMA, IEC and API. CSA Labeling and CENELEC/ATEX approved designs
are also available.

Most enclosures are available. Hyundai Ideal Electric Co. routinely designs motors for hazardous operation in Division 2/Zone 2 environments. Special designs for Division 1/Zone 1 environments, with TEFV enclosures, are available.

Testing

Hyundai Ideal Electric Co. motors have been rigorously tested in our factory – and, more importantly, in the field – to ensure each motor is mechanically and electrically sound. Hyundai Ideal Electric Co. has responded to the demand for increased testing by adding a state-of-the-art test floor to our manufacturing facility. Our test floor allows for the testing of vertical and horizontal synchronous motors at voltages from 400 volts to 15 kV and at 60 Hz and 50 Hz.

For More Information

For more information on synchronous motors, or any other HIEC product, contact Hyundai Ideal Electric Co. headquarters or your local HIEC representative.