Linear AC Power Source

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LMX Series

Linear AC Power Source, 500VA to 30kVA

The LMX Series delivers low-distortion, high-fidelity waveforms through precision linear amplification, ensuring accurate reproduction with wide small-signal bandwidth. Models operate from 15 to 5,000Hz, provide up to 600Vrms L-N, and cover power levels from 500VA to 30kVA. Available in 1- and 3-phase configurations, with parallelable models from 8 to 30kVA.

Power:

Up to 30kVA

Voltage:

Up to 0-300Vac
Direct Coupled Out

Frequency:

15Hz - 5000Hz

Why Choose LMX Series

Very High Frequency Conversion

Ideal for avionics or high-frequency applications

6:1 Peak Current Capability

Supports inrush current testing without waveform distortion

Cleanest Power and Lowest Distortion

Highest Crest Factor supports inrush currents and transients

Programmable Impedance

Lowest output impedance for EN61000-3-2, 3 testing

Key Specifications

Single and Three-Phase Models
500kVA to 6kVA model standard
8kVA to 30kVA model option
Up to 0-300Vac Direct Coupled Out
Very high frequency: 15Hz-5000Hz full bandwidth
Externally referenced measuring device calibration
Full Galvanic Isolation from Facility AC Input to Load Input and Between Input Phases / Channels
Advanced waveform capture & scope function
Safety Programmable Protection Limits for real power, apparent power, over-voltage and over-temperature
Full current into very low power factor reactive loads
Advanced Transients & Programming Capability: Sine, Square, Triangle, THD and Arbitrary, Harmonics waveforms
Phase Angle Programming on 3ø Models

Current, Apparent Power & True Power on all Phases
200 programs for arbitrary waveforms & transients (List, Pulse, Step Modes)
Up to 0-300Vac Direct Coupled Output (split phase)
Single phase power source models may be controlled to operate on either a 0-135Vac range or a 0-270Vac range. Three phase models are additionally switchable 3ø to 1ø output power form.
Precision True-RMS metering of Volts, Amps, Power, VA, Power Factor and Crest Factor
Precision Voltage Programming – 0.02% with Continuous Self Calibration (CSC)
Extensive Analog and Digital I/O for system integration
RS-232, USB, Modbus, TCP, GPIB, SCPI compatibility; IVI Instrument Drivers
CE (EMC/Safety) & NRTL Marked
Built-In SmartSource Suite Remote Control Platform

Clean Power & Low Distortion Using Linear AC Source

Linear AC Power Source Allows for High Crest Factor, Low Distortion & High Fidelity Output Waveforms

The linear amplifiers within the LMX Series power sources are unmatched in their ability to produce the high crest factor, low-distortion, high fidelity output waveforms required by the most demanding AC Test Power applications.

Stand-alone models range from 500VA to 6kVA. Larger chassis may be paralleled to create systems that range from 8kVA to 30kVA. Offering both single and three phase models, units are conservatively designed with output power ratings based on the most severe combination of input line, output voltage, power factor, and temperature.

The exceptionally broad bandwidth (50kHz small signal), combined with low output impedance and high crest factor ratings give the LMX Series the ability to produce high quality, low distortion output power into the most dynamic loads.

Wide Selection of Voltage Ranges (T Option)

LMX Series supports up to 135VLN/270VLL (single-phase) or 135VLN/234VLL (three-phase). Transformer Option The T-Option provides transformer-coupled outputs at 1.5:1, 2.0:1, or 2.5:1 ratios, reaching 600V (single-phase) or 585V (three-phase).

Automatic switching between direct coupled output voltage range and transformer coupled voltage range
T-Option provides transformer-coupled outputs at 1.5:1, 2.0:1, or 2.5:1 ratios

Generate Advanced Waveforms and Transients

Voltage, Waveform and Frequency output transients are easily created from the front panel using an intuitive spreadsheet style data entry method. Data may be entered for a specific phase or for all three phases at the same time. The LMX Series supports LIST, PULSE and STEP Mode Transient Types. In addition to sine wave, the LMX Series offers multiple selectable AC waveforms such as clipped sine wave at various distortion levels, square, triangle and stepped squares.

Over 200 arbitrary waveforms to customize
LIST, PULSE, STEP mode transient types
Sine, Square, Triangle, THD and Arbitrary waveforms

Simplify Testing with Smart Control, Built-In

Get access to SmartSource Suite, our proprietary built-in platform that allows full remote control, development, and execution of test sequences in real-time. Intelligently monitor, control, and manage testing using the intuitive embedded web browser interface on any mobile device

Access on any web browser in real-time
Enhanced visualization and reporting tools
View and control on multiple windows
Save time and increase productivity

Featured White Paper

Linear vs. PWM AC Power Source

Single Phase Models

Model	Rated Power (VA)	Voltage Max (L-N/L-L)	Rated Current Max (Arms)	Output Frequency (Hz)	AC Input	U	CTA
105LMX	500	Direct: 135/270	Direct: 4.0/2.0	15-5000	1Ø	3	Buy / Rent
105LMXT	500	Direct: 135/720 Transformer: 202/404 (T 1.5:1) 270/540 (T 2.0:1) 338/600 (T 2.5:1)	Direct: 4.0/2.0 Transformer: 2.6/1.3 (T 1.5:1) 2.0/1.0 (T 2.0:1) 1.6/0.8 (T 2.5:1)	45-5000	1Ø	3	Buy / Rent
108LMX	750	Direct: 135/270	Direct: 6.0/3.0	15-5000	1Ø	3	Buy / Rent
108LMXT	750	Direct: 135/720 Transformer: 202/404 270/540 338/600	Direct: 6.0/3.0 Transformer: 4.0/2.0 3.0/1.5 2.4/1.2	45-5000	1Ø	3	Buy / Rent
112LMX	1200	Direct: 150/300	Direct: 10.0/5.0	15-5000	1Ø	3	Buy / Rent
140LMX	4000	Direct: 135/270	Direct: 32/16	15-5000	3Ø	8	Buy / Rent
140LMXT	4000	Direct: 135/720 Transformer: 202/404 270/540 338/600	Direct: 32/16 Transformer: 21.3/10.7 16.0/8.0 12.8/6.4	45-5000	3Ø	11	Buy / Rent
160LMX	6000	Direct: 135/270	Direct: 48/16	15-5000	3Ø	8	Buy / Rent
160LMXT	6000	Direct: 135/720 Transformer: 202/404 270/540 338/600	Direct: 48/16 Transformer: 32.0/10.7 24.0/8.0 19.2/6.4	45-5000	3Ø	11	Buy / Rent

Three Phase Models

Model	Rated Power (VA)	Voltage Max (L-N/L-L) (Vrms)	Rated Current Max (Arms)	Output Frequency (Hz)	AC Input	U	CTA
305LMX	500	Direct: 1Ø: 132/264 3Ø: 234	Direct: 1Ø: 4/2 3Ø: 2	15-5000	1Ø	3	Buy / Rent
305LMXT	500	Direct: 1Ø: 132/264 3Ø: 234 Transformer: T 1.5:1 (1Ø): 202/404 T 1.5:1 (3Ø): 350 T 2.0:1 (1Ø): 270/540 T 2.0:1 (3Ø): 468 T 2.5:1 (1Ø): 338/600 T 2.5:1 (3Ø): 585	Direct: 1Ø: 4/2 3Ø: 2 Transformer: T 1.5:1 (1Ø): 2.6/1.3 T 1.5:1 (3Ø): 1.3 T 2.0:1 (1Ø): 2/1 T 2.0:1 (3Ø): 0.75 T 2.5:1 (1Ø): 1.6/0.8 T 2.5:1 (3Ø): 0.6	45-5000	1Ø	3	Buy / Rent
308LMX	750	Direct: 1Ø: 135/270 3Ø: 135	Direct: 1Ø: 6/2 3Ø: 2	15-5000	1Ø	3	Buy / Rent
308LMXT	750	Direct: 1Ø: 135/270 3Ø: 135 Transformer: T 1.5:1 (1Ø): 202/404 T 1.5:1 (3Ø): 350 T 2.0:1 (1Ø): 270/540 T 2.0:1 (3Ø): 468 T 2.5:1 (1Ø): 338/600 T 2.5:1 (3Ø): 585	Direct: 1Ø: 6/2 3Ø: 2 Transformer: T 1.5:1 (1Ø): 4/1.3 T 1.5:1 (3Ø): 1.3 T 2.0:1 (1Ø): 3/1 T 2.0:1 (3Ø): 1 T 2.5:1 (1Ø): 2.4/0.8 T 2.5:1 (3Ø): 0.8	45-5000	1Ø	3	Buy / Rent
312LMX	1200	Direct: 1Ø: 150/300 3Ø: 260 Transformer: 225 (T1.5:1, only 3Ø) 300 (T2.0:1, only 3Ø) 375 (T2.5:1, only 3Ø)	Direct: 1Ø: 10/3.3 3Ø: 3.3 Transformer: 2.2 (T1.5:1, only 3Ø) 1.66 (T2.0:1, only 3Ø) 1.33 (T2.5:1, only 3Ø)	15-5000	1Ø	3	Buy / Rent
320LMX	2000	Direct: 1Ø: 135/270 3Ø: 135	Direct: 1Ø: 18/6 3Ø: 6	15-5000	3Ø	5	Buy / Rent
320LMXT	2000	Direct: 1Ø: 135/270 3Ø: 135 Transformer: T1.5:1 (1Ø): 202/404 T1.5:1 (3Ø): 202/350 T2.0:1 (1Ø): 270/540 T2.0:1 (3Ø): 270/468 T2.5:1 (1Ø): 338/600 T2.5:1 (3Ø): 330/585	Direct: 1Ø: 18/6 3Ø: 6 Transformer: T1.5:1 (1Ø): 12/4 T1.5:1 (3Ø): 4 T2.0:1 (1Ø): 9/3 T2.0:1 (3Ø): 3 T2.5:1 (1Ø): 7.2/2.4 T2.5:1 (3Ø): 2.4	45-5000	3Ø	8	Buy / Rent
345LMX	4500	Direct: 1Ø: 135/270 3Ø: 135/234	Direct: 1Ø: 36/12 3Ø: 12	15-5000	3Ø	8	Buy / Rent
345LMXT	4500	Direct: 1Ø: 135/270 3Ø: 135/234 Transformer: T1.5:1 (1Ø): 202/404 T1.5:1 (3Ø): 202/350 T2.0:1 (1Ø): 270/540 T2.0:1 (3Ø): 270/468 T2.5:1 (1Ø): 338/600 T2.5:1 (3Ø): 330/585	Direct: 1Ø: 36/12 3Ø: 12 Transformer: T1.5:1 (1Ø): 24/8 T1.5:1 (3Ø): 8 T2.0:1 (1Ø): 18/6 T2.0:1 (3Ø): 6 T2.5:1 (1Ø): 14.4/4.8 T2.5:1 (3Ø): 4.8	45-5000	3Ø	11	Buy / Rent
360LMX	6000	Direct: 1Ø: 135/270 3Ø: 135/234	Direct: 1Ø: 48/16 3Ø: 16	15-5000	3Ø	8	Buy / Rent
360LMXT	6000	Direct: 1Ø: 135/270 3Ø: 135/234 Transformer: T1.5:1 (1Ø): 202/404 T1.5:1 (3Ø): 202/350 T2.0:1 (1Ø): 270/540 T2.0:1 (3Ø): 270/468 T2.5:1 (1Ø): 338/600 T2.5:1 (3Ø): 330/585	Direct: 1Ø: 48/16 3Ø: 16 Transformer: T1.5:1 (1Ø): 32/10.7 T1.5:1 (3Ø): 10.7 T2.0:1 (1Ø): 24/8 T2.0:1 (3Ø): 8 T2.5:1 (1Ø): 19.2/6.4 T2.5:1 (3Ø): 6.4	45-5000	3Ø	11	Buy / Rent

All single-phase output units are operable with dual voltage ranges as listed. Three-phase units are operable as single-phase with dual voltage range capability or as three-phase. Output voltage ranges and 1ø/3ø conversions are selected by front panel or bus commands.
Output voltage ranges listed are for standard units. VMAX is output voltage with nominal input and full rated load applied. Other voltage ranges are available with the output magnetics options.
Peak Repetitive Pulse Current.
Single-phase input: 100, 110, 120, 208, 220, and 240 VAC ±10%. Three-phase input: 208, 220, 240, 380, 416, and 480 VAC ±10%. (480 V input and 400 Hz input are each available as a cost option.)

Title	Document Type
LMX Series Linear AC Power Source Datasheet	Datasheet
LMX Series Linear AC Power Source Manual	Manual
Testing PV Micro Inverters Using Linear AC Power Source – LMX Series	App Note
White Paper Selecting a Linear vs. PWM AC Power Source	White Paper