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3.8 kV, up to 30 MVA

The TMdrive-XL80 is a medium voltage (3.8kV), AC fed drive designed

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

industrial applications.

High reliability, low line-side 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.

No motor current or torque transients when the motor transitions

to the AC line

• Less power loss in drive room

• Less total space required

• Simplifies design, installation and logistics

• High efficiency cooling

• Reduced fan and air conditioning load

TMdrive-XL80 Features and Benefits

Design Feature

• Conservative design using 6000 V – 6000 A GCTs

• High energy efficiency approximately 98.6%

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

control range

• 24-pulse converter rectifier with phase shifted transformer

• Optional synchronous transfer to line option with no interruption to

motor current

• Remote input isolation transformer

• 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 harmonic filter required to provide lower harmonic distortion levels

than IEEE-519 guidelines

• Allows starting control of multiple motors with one drive

6.0/6.6 kV, up to 92 MVA

The TMdrive-XL75 is a high-power, medium voltage, AC fed drive

designed for high-efficiency and power-friendly operation in a

broad range of industrial applications. A single bank drive has

15/20/23 MVA power level, and multiple banks can be used to

obtain higher power levels. Conservative design uses 4500 V, 

2100 A IEGTs, and the power bridges are water cooled.

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.

Smooth output voltage, motor friendly wave form

• Less power loss in drive room

• Less total space required

• Simplifies design and installation

No output transformer required, saving cost, mounting

space, and energy

• High efficiency cooling

• Reduced fan and air conditioning load

TMdrive-XL75 Features and Benefits

Design Feature

• Conservative design using 4500 V – 1500/2100 A IEGTs

• High energy efficiency of approximately 98.6%

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

speed control range

• 36-pulse converter rectifier by using phase shifted transformer

• Five level drive output waveform to the motor

• Externally mounted input isolation transformer

• Up to 6.0/6.6 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

• No line-side harmonic filter required to provide lower harmonic

distortion levels than IEE-519- guidelines

6.6 kV, up to 16.000 kVA

The TMdrive-XL55 is a medium voltage, AC fed drive designed for

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

industrial applications.

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-XL55 Features and Benefits

Design Feature

• Conservative design using 4500 V IGBTs

• 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

• Multiple level drive output wave form to the motor (five levels

for the 6.6 kV inverter)

• Synchronous transfer to line option with no interruption to motor

current

• Remote input isolation transformer

• 6.6 kV direct drive voltage output level

Customer Benefit

• Highly reliable operation, expected 20-year drive MTBF

• Considerable energy savings

• Capacitors not required for power factor correction

• No harmonic filter required to provide lower harmonic distortion

levels than IEEE-519-1992 guidelines

• No output transformer required, saving cost, mounting space,

and energy

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 power loss in drive room

• Less total space required

• Simplifies design and installation

3.3 kV, Up to 40.000 HP (36.000 kVA)

The TMdrive-70e2 is a 3.3 kV, 36.000 kVA water-cooled drive system

designed for precision, efficiency, and scalability in high-demand

industrial environments.

Advanced Power and Precision for Demanding Applications

The TMdrive-70e2 is TMEIC’s next-generation high-power drive system,

built for precision control of induction and synchronous motors in rugged

industrial settings. Utilizing state-of-the-art IEGT switching technology

and three-level PWM vector control, it offers high-speed switching,

low harmonic distortion, and reliable performance across a wide range

of applications. Ideal for metal mills, compressors, grinding mills, and

mine hoists, the TMdrive-70e2 delivers exceptional control accuracy,

energy efficiency, and dynamic response under heavy load conditions.

Compact, Scalable Design with Integrated Controls

Engineered for flexibility and efficiency, the TMdrive-70e2 supports power

levels from 6.000 to 36.000 kVA at 3.3 kV and features a modular layout for

converter, inverter, and cooling units—minimizing footprint and installation

costs. Its compatibility with TMEIC’s PP7EX2 microprocessor, TMdrive

Navigator tool, and common control platform ensures seamless integration

and simplified maintenance. With optional active regenerative conversion

and full compliance with IEEE-519-1992 harmonic standards, the

TMdrive-70e2 is a powerful solution for high-performance motion and

energy control.

Customer Benefit

• The enclosure provides protection against dirt, rain, sleet, snow,

windblown dust, water

• Designed to operate in the most extreme temperature ratings: -40°C

to +50°C (122°F)*1

• Saves an average of $10.000 – $15.000 per year in HVAC costs alone

when compared to an industial control building or MCC room with cooling

improvements*2

• Enclosure prevents thermal shock to VFD components when starting

under extended shutdown situation in extremely cold ambient

• The innovative air-flow technique eliminates filters, the need for frequent

filter replacement*3

• No building required, saving construction and development costs associated

with E-houses or industrial buildings

• Self-sufficient enclosure. Three cables in, three cables out. No external

480V or 120V connections, only utility mains, control cables, and motor

leads.

• The enclosure is classified as weatherproof, free-standing equipment,

eliminating the need for real estate improvement that attracts property

taxes

• The enclosure is designed, assembled and tested in the U.S.A.

All Weather Enclosure for TMdriveMVe2 Medium Voltage VFDs

TMdrive-Guardian is an innovative thermal management solution for

air-cooled VFD. Rated for NEMA Type 3R, this enclosure is ideally

suited for a wide variety of applications such as new installs, retrofits,

energy audit upgrades, and reactive power compensation.

TMEIC manufactures high-quality, reliable air-cooled medium voltage

Variable Frequency Drives (VFD). The TMdrive-MVe2 is TMEIC’s

world-class drive solution for powering a variety of rotating machinery

such as pumps, compressors, fans, blowers, extruders and other driven

equipment.

TMdrive-Guardian Features and Benefits

Design Feature

• NEMA Type 3R Rated

• Wide Ambient Temperature Rating

• HVAC Eliminated

• • Black Start Intelligence

• No Air Filters Required

• Easy Installation

• Plug and Play Installation

• Reduces Tax Liability

• Made in America

Improved Efficiency and Power Performance

The Dual Purpose drive utilizes standard TMdrive-10e2 hardware and

offers significantly improved performance over traditional thyristor

systems. Its IGBT gating reduces armature RMS current ripple by over

3:1. resulting in lower motor heating and better commutation.

While DC motor applications require additional auxiliary filtering panels,

upgrading to AC restores the drive’s full power capacity—enabling

significant output increases. With a regenerative converter operating at

unity power factor (1.0 PF), the TMdrive-10e2 DP reduces infrastructure

demands and energy costs, making it an ideal choice for facilities seeking

long-term performance and reliability.