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Série MT

Programmable DC Power Supply

Magna-Power Electronics MT Series uses the same reliable current-fed power processing technology and controls as the rest of the MagnaDC programmable power supply product line, but with larger high-power modules: individual 150 kW and 250 kW power supplies. The high-frequency IGBT-based MT Series units are among the largest standard switched-mode power supplies on the market, minimizing the number of switching components when comparing to smaller module sizes. Scaling in the multi-megawatts is accomplished using the UID47 device, which provides master-slave control: one power supply takes command over the remaining units, for true system operation. As an added safety measure, all MT Series units include an input AC breaker rated for full power.

250 kW modules come standard with an embedded 12-pulse harmonic neutralizer, ensuring low total harmonic distortion (THD). Even higher quality AC waveforms are available with an external additional 500 kW 24-pulse or 1000 kW 48-pulse harmonic neutralizers, designed and manufactured exclusively by Magna-Power for its MT Series products.

Build-Time: 10-12 Weeks

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Current-Fed Topology: Robust Power Conversion

All MagnaDC programmable DC power supplies utilize high-frequency IGBT- and MOSFET-based power processing in a current-fed topology. This topology adds an additional stage over the conventional voltage-fed topology for enhanced control and system protection, ensuring that even under a fault condition, the power supply will self-protect. Due to the self-protecting characteristics of this topology, the possibility of fast rising current spikes and magnetic core saturation is eliminated. This topology coupled with state-of-the-art Silicon Carbide (SiC) power semiconductors enables the MagnaDC power supplies to deliver class-leading power density, reliability, and efficiency with continuous full-power operation up to 50°C ambient.

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MT Series Current-Fed Topology Image
MT Series Made in the USA Image

Made in the USA, Available Worldwide

MagnaDC programmable DC power supplies are designed and manufactured at Magna-Power’s 73,500 sq-ft vertically integrated USA manufacturing facility in Flemington, New Jersey. From raw materials to the completed product, Magna-Power has insourced nearly the entire production process to maintain complete control of quality, cost, and build-time. Heat-sinks and various metal assemblies are machined through both automated CNC and EDM. Sheet metal is cut, punched, sanded, bent, and powder coated in-house. Magnetics are wound-to-order from validated designs based on a model’s voltage and current. A full surface mount technology (SMT) with multiple stages of 3D automated optical inspection ensures high-quality printed circuit board assemblies. Finally, after assembly, products undergo comprehensive test and calibration, followed by an extended burn-in period.

Products are sold directly from the factory and through distribution, with a service network around the world.

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Standard Safety Features

MagnaDC programmable DC power supplies feature a soft-start circuit to eliminate large peak in-rush currents from the AC mains, ensuring AC current draw never exceeds the current draw at full load. In addition, extensive safety and diagnostic functions are included, as follows:

  • AC Phase Loss
  • Over Voltage Trip (Programmable)
  • Over Current Trip (Programmable)
  • Cleared Fuse
  • Over Voltage on Program Line Input
  • Over Temperature on Internal Heatsinks
  • Safety Interlock / Emergency Stop Fault

When in standby or diagnostic fault, the AC mains are mechanically disconnected by an embedded AC contactor, providing confidence that the unit is only processing power when desired. Users can easily identify faults using the Status message display or by SCPI commands.

Finally, the interlock / emergency stop input is included as standard. This feature provides a 5V interlock input, which when coupled with the provided 5V reference signal, allows for a dry contact to easily trigger a latching interlock fault, while maintaining control power.

Limitless Programming Capabilities

With support for Standard Commands for Programmable Instrumentation (SCPI), MagnaDC power supplies provide an easy to use API with ASCII commands in readable text. Over 40 commands allow programmatic access to product registers, starting and stopping the product, control of voltage and current, high-accuracy measurement queries, and product configuration. Simple scripting or complex software can be achieved, with extensive documentation and examples provided by Magna-Power.

MagnaDC power supplies include RS232 communication interface standard with optional LXI TCP/IP Ethernet (+LXI) and IEEE-488 GPIB (+GPIB) options.

SCPI Command Listing

MT Series External User I/O Image

External User I/O for PLC Control or PHIL Simulation

Using the rear User 37-pin I/O connector, the MagnaDC power supplies can be completely controlled and monitored using external signals. The voltage, current, over voltage and over current set points are set by applying a 0-10V analog signal. Each diagnostic condition is given a designated pin, which reads +5V when high. Reference +5V and +10V signals are provided, eliminating the need for external voltage signals and allowing the use of dry contacts.

All these pins are isolated from the output terminals and referenced to earth-ground as standard—no additional isolation equipment or options necessary.

The following list summarizes the available I/O from the power supply:

  • 4 analog programming inputs
  • 2 analog measurement outputs
  • 5 digital inputs
  • 15 digital outputs
  • +2.5V, +5V and +10V reference signals

With the High Slew Rate Output (+HS) option equipped, high bandwidth operation is enabled along with fast rise times, allowing MagnaDC power supplies to address requirements for Hardware-in-the-Loop (HIL).


User I/O Pinout Definitions

High Performance Master-Slave Operation

All MagnaDC programmable DC power supplies come with master-slaving capability.

The MagnaDC master-slaving strategy helps to ensures no degradation in performance as units are added in parallel or series by providing gate drive signals directly from the master to the slave units. This strategy ensures one control loop for the system and eliminates the noise susceptibility commonly found when sending analog control references over long distances.

The Universal Interface Device 47 (UID47) accessory eases master-slave parallel or series configuration of Magna-Power DC power supplies, enabling near equal current or voltage sharing, depending on the configuration.

Master-slave series operation is supported to combined voltages up to the product's DC Output Isolation specification. No external blocking diodes are requires for series operation.

Magna-Power Software, NI LabVIEW Drivers, and IVI Drivers

All MagnaDC power supplies come standard with an IVI driver and an NI LabVIEW driver featuring a full set of VIs. Get started quickly with either driver using included example programs.

Magna-Power's included Remote Interface Software (pictured) provides an easy and intuitive method to operate a Magna-Power Electronics power supply with computer control. The software includes a virtual control panel, command panel to explore available commands, register panel to monitor the power supply status, calibration panel for recalibrating internal digital potentiometers, firmware panel for upgrading firmware, and a finally a modulation panel to emulate non-linear profiles.

All communication interfaces are supported across the various methods to program MagnaDC power supplies.

MT Series Software + Drivers Image

MT Series Harmonic Neutralization

Magna-Power's Harmonic Neutralizers eliminate families of harmonic components by multiplying the number of input phases with specially wound magnetic components, reducing the total harmonic distortion (THD). These magnetic components, in combination with equally loaded, high-power DC power supplies, offer a cost-effective solution to maintaining power quality at acceptable levels, enabling applications to benefit from Magna-Power's reliable high-frequency switch-mode power supplies, extended into multi-megawatts. A 12-pulse Harmonic Neutralizer is embedded in all 250 kW models and its installation is transparent to the end user. For applications demanding an even better THD level than that provided by a 12-pulse waveform, external 24-pulse and 48-pulse harmonic neutralizers are available from Magna-Power. Contact you local sales partner for more information.

Understanding AC Harmonic Waveforms

The following figures are representative of expected AC current waveforms for the various pulses available from Magna-Power Electronics power supplies. Standard models 1.5 kW through 150 kW produce 6-pulse waveforms, while 250 kW models produce 12-pulse waveforms. Magna-Power Electronics Harmonic Neutralizers suppress families of harmonics by increasing the number of power phases. It can be used when multiple power supplies are used in series or parallel and are equally loaded. Harmonic Neutralizers can produce 12-pulse, 18-pulse, 24-pulse, or 48-pulse waveforms which have harmonic current components on the order of 12n±1, 18n±1, 24n±1, or 48n±1, respectively. The following figures show the theoretical difference for waveforms with a different number of pulses. Harmonic Neutralizers are protected with appropriate sized primary-side circuit breakers.

Why Neutralize Harmonics?

Input current harmonics are a by-product of nearly all power supplies. Power can only be delivered to the load if the frequency and phase of the voltage and current match. For a three phase power supply using a three phase input rectifier, the input current has a theoretical spectrum of 6n±1 where n is an integer incrementing from 1; this is known as a 6-pulse waveform. This means that a power supply with a three phase input rectifier will produce input currents at 1, 5, 7, 11, 13, 17, 19 ... times the fundamental frequency. The theoretical magnitude decays as the reciprocal of the harmonic component. The 5th and 7th harmonic components have magnitudes of 20% and 14% of the fundamental component, respectively. Harmonics currents in power systems can find unusual paths and can cause problems if the magnitude is significant and there are loads sensitive to harmonic frequencies. For example, lighting ballasts have series connected capacitors and inductors which can be excited by harmonic currents. IEEE has introduced standard, IEEE 519, which defines recommended limits. Implementing this standard requires a knowledge of the power system and other loads producing harmonics. Unfortunately, the standard can allow the same power supply to possibly exceed limits in one application and not in another. In the same respect, a power supply may or may not can cause a harmonic related problem with or without meeting IEEE 519. The best solution to minimize the risk of a harmonic problem is to eliminate the harmonic current at the source.

MT Series Harmonic Neutralization Image

Front Panel - Standard

Front Panel - Standard

Front Panel - C Version

Front Panel - C Version
1
Power switch energizes control circuits without engaging main power
2
Engages and disengages main power via integrated mechanical contactor
3
Meters display output voltage, output current, voltage set point, current set point, over voltage trip and over current trip
4
Stepless rotary knob to set voltage-current
5
POWER: Indicates power outputSTANDBY: Indicates control power only
6
Configuration
REM SEN: Remote sense enabled
INT CTL: Front panel start/stop/clear enabled
EXT CTL: External start/stop/clear enabled
ROTARY: Front panel rotary knob input
EXT PGM: External analog voltage-current control
REMOTE: Computer control
7
Diagnostic Alarms
LOC: Interlock
PGL: External input voltage beyond limits
PHL: Under-voltage AC input
THL: Over-temperature condition
OVT: Over-voltage protection has tripped
OCT: Over-current protection has tripped
8
Function Keys
MENU: Selects function
ITEM: Selects item within function
V/I DIS: Displays voltage-current settings
TRIP DIS: Displays OVT and OCT setting
CLEAR: Clears settings or resets fault
ENTER: Select item
9
Memory location indicator, used for autosequencing applications
10
Digital input keypad

Model Ordering Guide

For both ordering and production, MT Series models are uniquely defined by several key characteristics, as defined by the following diagram:

MT Series Ordering Guide

MT Series Models

There are 49 different models in the MT Series spanning power levels: 150 kW, 250 kW, 500 kW, 750 kW, 1000 kW+. To determine the appropriate model:

  1. Select the desired Max Voltage (Vdc) from the left-most column.
  2. Select the desired Max Current (Adc) from the same row that contains your desired Max Voltage.
  3. Construct your model number according to the model ordering guide.
  150 kW 250 kW 500 kW* 750 kW* 1000 kW*    
Max Voltage (Vdc) Max Current (Adc) Ripple (mVrms) Efficiency
32 4500 N/A N/A N/A N/A 40 90%
40 3750 6000 12000 18000 24000 40 91%
50 3000 5000 10000 15000 20000 50 91%
60 2500 4160 8320 12480 16640 60 91%
80 1850 3000 6000 9000 12000 60 91%
100 1500 2500 5000 7500 10000 60 91%
125 1200 2000 4000 6000 8000 100 91%
160 900 1500 3000 4500 6000 120 91%
200 750 1250 2500 3750 5000 125 91%
250 600 1000 2000 3000 4000 130 92%
300 500 833 1666 2499 3332 160 92%
375 400 660 1320 1980 2640 170 92%
400 375 625 1250 1875 2500 180 92%
500 300 500 1000 1500 2000 220 92%
600 240 400 800 1200 1600 250 92%
800 180 300 600 900 1200 300 92%
1000 150 250 500 750 1000 400 92%
1250 120 200 400 600 800 500 92%
1600 90 150 300 450 600 600 92%
2000 75 125 250 375 500 800 92%
2500 60 100 200 300 400 900 92%
3000 50 80 160 240 320 1000 92%
4000 36 60 120 180 240 1100 92%
5000 30 50 100 150 200 92%
6000 25 41.6 83.2 124.8 166.4 92%
        
AC Input Voltage (Vac) Input Current Per Phase (Aac)    
380/415 Vac, 3Φ 276 440 880 1320 1760    
440/480 Vac, 3Φ 238 380 760 1140 1520    

* Power levels marked with an asterisk are achieved through master-slave parallel of 250 kW models. Contact sales for more information or to inquire for systems as large as 4,000 kW+.

Specifications

The following specifications are subject to change without notice. Unless otherwise noted, all specifications measured at the product's maximum ratings.

AC Input Specifications
Specification Value
3Φ AC Input Voltage

Available on all models
380/400 Vac (operating range 342 to 440 Vac)
415 Vac (operating range 373 to 456 Vac)
440 Vac (operating range 396 to 484 Vac)
480 Vac (operating range 432 to 528 Vac)
Input Frequency
50 Hz to 60 Hz
Power Factor
> 0.92 at maximum power, 100 kW and 150 kW models
> 0.96 at maximum power, 250 kW models
AC Input Isolation
±2500 Vdc, maximum input voltage to ground
DC Output Specifications
Specification Value
Voltage Ripple
Model specific. Refer to chart of available models.
Line Regulation
Line regulation is a measure of a power supply's ability to maintain its output voltage (or current) given changes in the input line voltage. Line regulation is expressed as percent of change in the output voltage (or current) relative to the change in the input line voltage.
Voltage mode: ± 0.004% of full scale
Current mode: ± 0.02% of full scale
Load Regulation
Load regulation is a measure of the power supply's ability to maintain its output voltage (or current) given changes in the load, measured while operating at the maximum rated voltage (or current). Load regulation is expressed as the difference between voltage (or current) at full load minus voltage (or current) at min load, divided by the products max voltage (or current) rating.
Voltage mode: ± 0.01% of full scale
Current mode: ± 0.04% of full scale
Stability
± 0.10% for 8 hrs. after 30 min. warm-up
Efficiency
90% to 92%
Model specific. Refer to chart of available models.
Maximum Slew Rate

Standard Models
< 170 ms for a programmed output voltage change from 0 to 63%
< 200 ms for a programmed output current change from 0 to 63%
Maximum Slew Rate

Models with High Slew Rate Output (+HS) Option
< 5 ms for a programmed output voltage change from 0 to 63%
< 10 ms for a programmed output current change from 0 to 63%
Bandwidth

Standard Models
3 Hz with remote analog voltage programming
2 Hz with remote analog current programming
Bandwidth

Models with High Slew Rate Output (+HS) Option
60 Hz with remote analog voltage programming
45 Hz with remote analog current programming
DC Output Isolation

Models Rated ≤1000 Vdc
±1000 Vdc, maximum output voltage to ground
DC Output Isolation

Models Rated >1000 Vdc or Models with +ISO Option
±6000 Vdc, maximum output voltage to ground
Programming Interface Specifications
Specification Value
Front Panel Programming
Stepless aluminum rotary knobs and keypad
Computer Interface
RS232, D-sub DB-9, female (Standard)
LXI TCP/IP Ethernet RJ45 (Option +LXI)
IEEE-488 GPIB (Option +GPIB)
External User I/O Port
37-pin D-sub DB-37, female
Referenced to Earth ground; isolated from power supply output
See User Manual for pin layout
Remote Sense Limits (Wired)

Available for models ≤ 1000 Vdc without High Isolation Output (+ISO) option
3% maximum voltage drop from output to load
Accuracy Specifications
Specification Value
Voltage Programming Accuracy
Programming accuracy is a measure of how close the actual power supply output will be to the programmed setting, as measured by an ideal meter.
± 0.075% of max rated voltage
Over Voltage Trip Programming Accuracy
± 0.075% of max rated voltage
Current Programming Accuracy
Programming accuracy is a measure of how close the actual power supply output will be to the programmed setting, as measured by an ideal meter.
± 0.075% of max rated current
Over Current Trip Programming Accuracy
± 0.075% of max rated current
Voltage Readback Accuracy
Readback accuracy is a measure of how close the measured and displayed value will be to the actual power supply output.
± 0.2% of max rated voltage
Current Readback Accuracy
Readback accuracy is a measure of how close the measured and displayed value will be to the actual power supply output.
± 0.2% of max rated current
External User I/O Specifications
Specification Value
Analog Programming and Monitoring Levels
0-10 Vdc
Analog Output Impedances
Voltage output monitoring: 100 Ω
Current output monitoring: 100 Ω
+10V reference: 1 Ω
Digital Programming and Monitoring Limits
Input: 0 to 5 Vdc, 10 kΩ input impedance
Output: 0 to 5 Vdc, 5 mA drive capacity
Physical Specifications
Specification Value
Size and Weight

100 kW Models
Floor-standing double-bay 19" cabinet with casters
67" H x 48" W x 31.5" D (170.2 x 121.9 x 80.0 cm)
1600 lbs (725.8 kg)
Size and Weight

150 kW Models
Floor-standing double-bay 19" cabinet with casters
67" H x 48" W x 31.5" D (170.2 x 121.9 x 80.0 cm)
2100 lbs (952.5 kg)
Size and Weight

250 kW Models
Floor-standing triple-bay 19" cabinet with casters
67" H x 72" W x 31.5" D (170.2 x 182.9 x 80.0 cm)
3300 lbs (1496.9 kg)
Environmental Specifications
Specification Value
Ambient Operating Temperature
0°C to 50°C
Storage Temperature
-25°C to +85°C
Humidity
Relative humidity up to 95% non-condensing
Temperature Coefficient
0.04%/°C of maximum output voltage
0.06%/°C of maximum output current
Air Flow
Front and rear inlet, top exhaust
Regulatory Specifications
Specification Value
EMC
Complies with 2014/30/EU (EMC Directive)
CISPR 22 / EN 55022 Class A
Safety
Complies with EN61010-1 and 2014/35/EU (Low Voltage Directive)
CE Mark
Yes
RoHS Compliant
Yes

Dimensional Diagrams

The following are vectorized diagrams for the MT Series. Refer to the Downloads section for downloadable drawings.

Front Side
150 kW Models
Rear Side
150 kW Models
Front Side
250 kW Models
Rear Side
250 kW Models
DC Output Bus
Models Rated 50 Vdc and Below
DC Output Bus
Models Rated 60 Vdc through 1000 Vdc
DC Output Bus
Models Rated Greater than 1000 Vdc or with High Isolation Output Option (+ISO)

Options and Accessories

The following are options and accessories developed specifically for Magna-Power's MT Series

Accessories

External accessories and integration services are available for Magna-Power products

Downloads

The following downloads are for the Série MT:

Documentation

MT Series Datasheet [4.6.0] [EN] [PDF]
MT Series Datasheet [4.6.0] [ZH] [PDF]
MT Series User Manual [6.0] [EN] [PDF]

Drawings

Drivers

Software

Photovoltaic Power Profiles Emulation [2.0.0.12] [ZIP] [License Required]