TMEIC TMdrive-XL85 Medium Voltage AC Drives

7.2 kV, up to 120 MVA

The TMdrive-XL85 is a very high-power, medium voltage (7.2kV), AC fed drive

designed for high-efficiency and power-friendly operation in a broad range of

industrial applications. A single bank drive is rated for up to 30 MVA power level.

High reliability, low harmonic distortion, and high power factor operation are

designed into the drive.

TMEIC’s water cooled design and compatibility of piping materials with de-ionized

cooling system ensures that the drive has a MTBF of more than 20 years.

TMdrive-XL85 Features and Benefits

Design Feature

• Conservative design using 6000 V - 6000 A Gate Controlled Thyristors (GCT)

• High energy efficiency approximately 98.6%

• Diode rectifier ensures power factor greater than 95% in the speed control range

• 36-pulse converter rectifier by using separated phase shifted transformer

• 5- level drive output waveform to the motor

• Synchronous transfer to line option with no interruption to motor current

• Outdoor mounted input isolation transformer included in drive package

• Up to 7.2 kV direct drive voltage output level

• Deionized water-cooling system

Customer Benefit

• Highly reliable operation, expected 20-year drive MTBF

• Considerable energy savings

• Capacitors not required for power factor correction

• No line-side harmonic filters required to provide lower harmonic distortion levels than

IEEE-519 guidelines

• Suitable for standard motors due to motor friendly wave form

• Allows starting control of multiple motors with one drive

• No motor current or torque transients when the motor transitions to the AC line

• Less heat loss in drive room thereby reducing cooling HVAC costs

• Less indoor space required

• Simplifies design, installation and logistics

• Ability to accept a wide range of industrial voltages such as 10/11/13.8/25/34/69 kV etc.

• No output transformer required, and reduction in cable runs and size.

• High efficiency cooling

• Reduced fan and air conditioning load