MS Series IV: 30 kW to 75 kW

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Overview

Innovative and Scalable

Magna-Power Electronics MS Series combines the best of DC power processing with microprocessor embedded control. A combination of high and medium frequency power processing technologies improves response, shrinks package size, and reduces cost. MS Series power supplies are current-fed and are more tolerant to abusive loads than conventional switching power supplies. This technology allows the power supply to operate under short-circuit conditions, open-circuit conditions, and everything in between.

MS Series power supplies offer both master/slave parallel and series operation. This enables two or more power supplies to be placed in parallel for increased output current or in series for increased output voltage. With master/slave operation, power supplies operate at near equal voltage and current. The process of master/slaving power supplies is plug & play with the use of Magna-Power Electronics UID46 option, which can be added at any time. 

MS Series power supplies can operate as a voltage source or current source depending on the control settings and load conditions. If the power supply is operating as a voltage source and the load increases to a point beyond the current command setting, the power supply automatically crosses over to current mode control and operates as a current source at that setting.

Designed for Safety

The MS Series power supplies have extensive diagnostic functions -- all of which, when activated, take command to shut down the system. Diagnostic functions include phase loss, excessive thermal conditions, over voltage trip, over current trip, fuse clearing, and program line. Program line monitors externally applied analog set point signals to insure they are within the specified range. Upon a diagnostic fault condition, main power is disconnected and the diagnostic condition is latched into memory. Pressing the clear key clears the memory. All diagnostic functions can be monitored through a rear connector. Furthermore, control functions can also be set through the rear connector to allow simultaneous control of one or more MS Series units.

MS Series supplies have three levels of over voltage/current protection: shutdown of controlling insulated gate bipolar transistors (IGBT’s), disconnect of main power, and input fuses. After an over voltage/current trip condition, the supply must be reset.

Load Dependent Air or Optional Water Cooling

The MS Series power supplies are designed to operate at rated load 24 hours per day. Standard air cooled units are equipped with variable speed, load dependent blowers to maintain comfortable margins for removing heat from sensitive power semiconductors. Variable speed operation maximizes fan life and a minimizes external environmental hazards.

Models with the Water Cooling Option (+WC) contain integrated semiconductor chillers and air to water heat exchangers to manage cooling of heat producing components, without any change to the package size. This option allows the power supply to be sealed from the environment enabling placement in harsh environments. These units provide long life in plating facilities, electrodionization treatment plants, shipboard, and other corrosive environments. Water cooling also permits power supplies to be stacked in high density equipment racks where air cooling is not possible nor desireable.

Fully Programmable

The MS Series power supplies can be programmed and monitored using three possible sources:

  • Stepless front panel programming knobs
  • External analog/digital signals
  • Computer interface through software or SCPI

The power supply can be programmed to have its control functions accessible from the front panel, rear connector, RS232 (standard), LXI TCP/IP Ethernet, IEEE 488.2 GPIB, USB Edgeport, or RS485DSS communications. An extensive selection of drivers, including IVI, LabVIEW, and LabWindows™ allow users to get started quickly in a variety of programming environments for programming using supported Standard Commands for Programmable Instruments (SCPI). Use of included Remote Interface Software allows extensive computer controls and a virtual front panel. Sensing can be established at the output terminal of the power supply or through a rear remote sense terminals for sensing at the load. An external interlock can be set to enable operation only when an external connection is made. Even calibration has been simplified with front panel access to calibration digital potentiometers.

Isolated External I/O for Automation

Using the rear 37-pin I/O connector, the MS Series power supplies can be completely controlled and monitored using external signals. The voltage, current, over voltage trip, and over current trip set points are set by applying a 0-10 Vdc signal. Each diagnostic condition is given a designated pin, which reads 5 Vdc when high. In addition, reference 5 Vdc and 10 Vdc signals are provided, eliminating the need for external voltage signals and allowing the use of dry contacts. Also, the power supply features an external interlock, which when enabled, allows the power supply to be tied in with other emergency stop equipment. All these pins are isolated to earth-ground as standard--no additional isolation equipment or options necessary. For more information, read External Pin (JS1) and PLC Integration Guide.

Attention to Power Quality

The MS Series power supplies contain circuitry to work harmoniously with other power equipment. Step-start contactors are used to keep inrush current below full scale operating current. Filter components lower current harmonic content emanating from the power supply and increase power factor to levels beyond 90%, regardless of the input voltage selection. Every power supply is tested at 90% to 125% nominal line to insure satisfactory operation even under the worst line voltage conditions.

Electronic Output Stage

The new and novel MS Series output stage utilizes constant power loading under all conditions via an electronic bleed resistance. This electronic bleeder means stability under all operating conditions and faster fall times, without affecting the overall system efficiency.

Specifications

Input
Nominal Voltage
3 phase, 3 wire + ground		 208 VAC (operating range 187 - 229 VAC)
240 VAC (operating range 216 - 264 VAC)
380 VAC (operating range 342 - 418 VAC)
415 VAC (operating range 373 - 456 VAC)
440 VAC (operating range 396 - 484 VAC)
480 VAC (operating range 432 - 528 VAC)
Frequency 50 Hz - 60 Hz (operating range 45 Hz - 66 Hz)
Power Factor
Greater than 92% at maximum power for 3 phase models
Environmental
Operating Temperature 0°C to 50°C
Storage Temperature -25°C to +85°C
Ambient Temperature 0 to 50°C
Temperature Coefficient
0.04%/°C of maximum output voltage,
0.06%/°C of maximum output current.
Air Cooling (Standard) Side air inlet, rear exhaust
Water Cooling (Optional) 25°C maximum inlet temperature
3.0 GPM minimum flow rate for 30 kW units
4.5 GPM minimum flow rate for 45-75 kW units
80 PSI maximum pressure
1/4” NPT female pipe size
Physical
Power Input Phases Size (H" x W" x D") Weight
30 kW
45 kW
60 kW
75 kW		 3Φ
3Φ
3Φ
3Φ		 38½" x 22" x 29" (97.79 x 55.58 x 73.66 cm)
38½" x 22" x 29" (97.79 x 55.58 x 73.66 cm)
38½" x 22" x 29" (97.79 x 55.58 x 73.66 cm)
49" x 22" x 29" (124.46 x 55.58 x 73.66 cm)		 280 lbs (127.01 kg)
395 lbs (179.17 kg)
510 lbs (231.33 kg)
645 lbs (292.57 kg)
Output
Ripple See Model Charts
Line Regulation Voltage Mode: ± 0.004% of full scale
Current Mode: ± 0.02% of full scale
Load Regulation Voltage Mode: ± 0.01% of full scale
Current Mode: ± 0.04% of full scale
Load Transient Response 2 ms to recover within ±1% of regulated output with a 50% to 100% or 100% to 50% step load change
Efficiency ≥ 86%; See Model Charts
Stability ± 0.10% for 8 hrs. after 30 min. warmup
Isolation User inputs and outputs: referenced to earth ground.
Maximum input voltage to ground: ±2500 Vac
Maximum output voltage to ground:
±1000 Vdc for models less than or equal to 1000 Vdc,
±(2000 Vdc + Vo/2) for models greater than 1000 Vdc or with High Isolation Output Option (+ISO) where Vo is the maximum output voltage of the power supply.
Maximum Slew Rate Standard Models:
100 ms for an output voltage change from 0 to 63%,
100 ms for an output current change from 0 to 63%.
With High Slew Rate Option (+HS):
4 ms for an output voltage change from 0 to 63%,
8 ms for an output current change from 0 to 63%.
Bandwidth Standard Models:
3 Hz with remote analog voltage programming,
2 Hz with remote analog current programming.
With High Slew Rate Option (+HS):
60 Hz with remote analog voltage programming,
45 Hz with remote analog current programming.
Analog Output Impedances Voltage output monitoring: 100 ohm
Current output monitoring: 100 ohm
+10V Ref: 1 ohm
Programming Levels and Accuracy of Full Scale
  Voltage
Set Point		 Current
Set Point		 OVT
Set Point		 OCT
Set Point
Remote Analog Programming Accuracy ± 0.075% ± 0.075% ± 0.075% ± 0.075%
Digital Programming Accuracy ± 0.075% ± 0.075% ± 0.075% ± 0.075%
Remote Analog Programming Levels 0 - 10.0 Vdc 0 - 10.0 Vdc 0 - 10.0 Vdc 0 - 10.0 Vdc
Monitoring Levels and Accuracy of Full Scale
  Output Voltage Output Current
Remote Analog Monitoring Accuracy ± 0.2% ± 0.2%
Digital Monitoring Accuracy ± 0.2% ± 0.2%
Remote Analog Monitoring Levels 0 - 10.0 V 0 - 10.0 V
Control Limits
Remote Sense Limits 3% maximum voltage drop from output terminals to load.  Remote sense is not available for models with output voltages greater than 1000 Vdc or with +ISO option.
Period Programming Limits Minimum period: 10 msec
Maximum Period: 9997 sec or 2.77 hours
Digital control inputs and outputs limits Input voltage: 0 to 5 Vdc, 10K input impedance;
Output voltage: 0 to 5 Vdc, 5 mA drive capacity
5 V supply: 25 mA.
30 kW Models
Model Voltage
(Vdc)		 Current
(Adc)		 Ripple
(mVrms)		 Eff.
%		 3Φ Input Current (Aac)
208/240 V 380/415 V 440/480 V
MSA16-1800 0-16 0-1800 35 86 108 60 54
MSA20-1500 0-20 0-1500 40 86 108 60 54
MSA32-900 0-32 0-900 40 86 108 60 54
MSA40-750 0-40 0-750 40 87 108 60 54
MSA50-600 0-50 0-600 50 87 108 60 54
MSA80-372 0-80 0-372 60 87 108 60 54
MSA100-300 0-100 0-300 60 87 106 58 52
MSA125-240 0-125 0-240 100 87 106 58 52
MSA160-186 0-160 0-186 120 87 106 58 52
MSA200-150 0-200 0-150 125 87 106 58 52
MSA250-120 0-250 0-120 130 88 106 58 52
MSA375-78 0-375 0-78 170 88 106 58 52
MSA400-72 0-400 0-72 180 88 106 58 52
MSA500-60 0-500 0-60 220 88 106 58 52
MSA600-48 0-600 0-48 250 88 106 58 52
MSA800-36 0-800 0-36 300 88 106 58 52
MSA1000-30 0-1000 0-30 350 88 106 58 5
MSA1500-19.8 0-1500 0-19.8 400 88 106 58 52
MSA2000-15.0 0-2000 0-15.0 450 88 106 58 52
MSA3000-9.6 0-3000 0-9.6 500 88 106 58 52
MSA4000-7.2 0-4000 0-7.2 550 88 106 58 52
45 kW Models
Model Voltage
(Vdc)		 Current
(Adc)		 Ripple
(mVrms)		 Eff.
%		 3Φ Input Current (Aac)
208/240 V 380/415 V 440/480 V
MSA16-2700 0-16 0-2700 35 86 162 90 81
MSA20-2250 0-20 0-2250 40 86 162 90 81
MSA32-1350 0-32 0-1350 40 86 162 90 81
MSA40-1125 0-40 0-1125 40 87 162 90 81
MSA50-900 0-50 0-900 50 87 162 90 81
MSA80-558 0-80 0-558 60 87 162 90 81
MSA100-450 0-100 0-450 60 87 159 87 78
MSA125-360 0-125 0-360 100 87 159 87 78
MSA160-279 0-160 0-279 120 87 159 87 78
MSA200-225 0-200 0-225 125 87 159 87 78
MSA250-180 0-250 0-180 130 88 159 87 78
MSA375-117 0-375 0-117 170 88 159 87 78
MSA400-108 0-400 0-108 180 88 159 87 78
MSA500-90 0-500 0-90 220 88 159 87 78
MSA600-72 0-600 0-72 250 88 159 87 78
MSA800-54 0-800 0-54 300 88 159 87 78
MSA1000-45 0-1000 0-45 350 88 159 87 78
MSA1500-27.7 0-1500 0-27.7 400 88 159 87 78
MSA2000-22.5 0-2000 0-22.5 450 88 159 87 78
MSA3000-14.4 0-3000 0-14.4 500 88 159 87 78
MSA4000-10.8 0-4000 0-10.8 550 88 159 87 78
60 kW Models
Model Voltage
(Vdc)		 Current
(Adc)		 Ripple
(mVrms)		 Eff.
%		 3Φ Input Current (Aac)
208/240 V 380/415 V 440/480 V
MSA16-3600 0-16 0-3600 35 86 216 120 108
MSA20-3000 0-20 0-3000 40 86 216 120 108
MSA32-1800 0-32 0-1800 40 86 216 120 108
MSA40-1500 0-40 0-1500 40 87 216 120 108
MSA50-1200 0-50 0-1200 50 87 216 120 108
MSA80-744 0-80 0-744 60 87 216 120 108
MSA100-600 0-100 0-600 60 87 212 116 104
MSA125-480 0-125 0-480 100 87 212 116 104
MSA160-372 0-160 0-372 120 87 212 116 104
MSA200-300 0-200 0-300 125 87 212 116 104
MSA250-240 0-250 0-240 130 88 212 116 104
MSA375-156 0-375 0-156 170 88 212 116 104
MSA400-144 0-400 0-144 180 88 212 116 104
MSA500-120 0-500 0-120 220 88 212 116 104
MSA600-96 0-600 0-96 250 88 212 116 104
MSA800-72 0-800 0-72 300 88 212 116 104
MSA1000-60 0-1000 0-60 350 88 212 116 104
MSA1500-39.6 0-1500 0-39.6 400 88 212 116 104
MSA2000-30.0 0-2000 0-30.0 450 88 212 116 104
MSA3000-19.2 0-3000 0-19.2 500 88 212 116 104
MSA4000-14.4 0-4000 0-14.4 550 88 212 116 104
75 kW Models
Model Voltage
(Vdc)		 Current
(Adc)		 Ripple
(mVrms)		 Eff.
%		 3Φ Input Current (Aac)
208/240 V 380/415 V 440/480 V
MSA16-4500 0-16 0-4500 35 86 270 150 135
MSA20-3750 0-20 0-3750 40 86 270 150 135
MSA32-2250 0-32 0-2250 40 86 270 150 135
MSA40-1875 0-40 0-1875 40 87 270 150 135
MSA50-1500 0-50 0-1500 50 87 270 150 135
MSA80-930 0-80 0-930 60 87 270 150 135
MSA100-750 0-100 0-750 60 87 265 145 130
MSA125-600 0-125 0-600 100 87 265 145 130
MSA160-465 0-160 0-465 120 87 265 145 130
MSA200-375 0-200 0-375 125 87 265 145 130
MSA250-300 0-250 0-300 130 88 265 145 130
MSA375-195 0-375 0-195 170 88 265 145 130
MSA400-180 0-400 0-180 180 88 265 145 130
MSA500-150 0-500 0-150 220 88 265 145 130
MSA600-120 0-600 0-120 250 88 265 145 130
MSA800-90 0-800 0-90 300 88 265 145 130
MSA1000-75 0-1000 0-75 350 88 265 145 130
MSA1500-49.5 0-1500 0-49.5 400 88 265 145 130
MSA2000-37.5 0-2000 0-37.5 450 88 265 145 130
MSA3000-24.0 0-3000 0-24.0 500 88 265 145 130
MSA4000-18.0 0-4000 0-18.0 550 88 265 145 130
Low Voltage, High Current Models
Model Voltage
(Vdc)		 Current
(Adc)		 Ripple
(mVrms)		 Eff.
%		 Size 3Φ Input Current (Aac)
208/240 V 380/415 V 440/480 V
MSA5-2700 0-5 0-1800 50 86 18U Cabinet 57 30 27
MSA5-3600 0-5 0-3600 50 86 18U Cabinet 76 40 36
MSA5-4500 0-10 0-2700 50 86 30U Cabinet 95 50 45
MSA10-2700 0-10 0-2700 40 86 18U Cabinet 108 62 54
MSA10-3600 0-10 0-3600 40 86 18U Cabinet 144 84 72
MSA10-4500 0-10 0-4500 40 86 30U Cabinet 180 106 90

Analog Control - A Series

MS Series models utilizing the A Version front panel, MSA, provide stepless analog control from front panel potentiometers. With simple configuration changes, voltage, current, over voltage trip, and over current trip may also be programmed from the rear connector or with RS232, optional IEEE 488.2 GPIB, LXI TCP/IP Ethernet, USB, or RS485 communications. MSA Series power supplies are well suited for industrial applications requiring a minimum of control.

Digital Control - D Series

MS Series models utilizing the D Version front panel, MSD, provide all of the features of the A Version plus these models can be configured for keypad entries and up/down presses for voltage, current, over voltage trip, and over current trip. Key strokes are kept to a minimum by a repeat last command feature. MSD Series power supplies are well suited for laboratory applications requiring enhanced control.

MSD Series models have one-hundred memory states available to program voltage, current, over voltage trip, over current trip, and time period. Set points can be auto sequenced with time or external triggering. Special programming codes allow repeating to create a power function generator. The first 10 memory states are displayed on the front panel to simplify programming tasks.

MSD Series power supplies offer an analog input to modulate the voltage or current setting using piecewise linear approximation. This feature enables the voltage or current setting to be adjusted by a sensor input, such as a thermistor, or by monitoring its own voltage or current. Modulation allows the output to be tailored for advanced process control applications, battery charging, and source emulation.

Computer Control - C Series

MS SERIES models utilizing the C Version front panel, MSC, only allow control from the rear connector or by RS232, optional IEEE 488.2 GPIB, LXI TCP/IP Ethernet, USB, or RS485 communications. These models are intended for process control applications where front panel controls and displays are not required or desired.

Front Panel Features Comparison

Features MSC MSA MSD
FRONT PANEL CONTROLS      
Power on/off • • •
Start/Stop   • •
Rotary Voltage/Current Entry   • •
Rotary OVT/OCT Entry   • •
Menu/Item   • •
Display Settings   • •
Enter/Clear   • •
Keypad Voltage/Current Entry     •
Keypad OVT/OCT Entry     •
Arm     •
INDICATORS      
Voltage/Current Set Point   • •
OVT/OCT Set Point   • •
Voltage/Current Output   • •
Internal/External Control   • •
Alarms   • •
Rotary/External/Remote Programming   • •
Remote Sense Enabled   • •
Keypad Programming     •
Memory Setting     •
Armed for Auto Sequence Operation     •
REAR PANEL CONTROLS      
Voltage/Current Set Point • • •
OVT/OCT Set Point • • •
Modulation Set Point     •
Voltage/Current Output • • •
Internal/External Control • • •
Alarm Output (9 lines) • • •
Status Output (6 lines) • • •
Master/Slave Connections • • •
Remote Sense Inputs • • •
RS232 Inputs • • •
Interlock Enable • • •
Arm Enable     •

Isolated External I/O for Automation

Using the rear 37-pin I/O connector, the MS Series power supplies can be completely controlled and monitored using external signals. The voltage, current, over voltage trip, and over current trip set points are set by applying a 0-10 Vdc signal. Each diagnostic condition is given a designated pin, which reads 10 Vdc when high. Also, the power supply features an external interlock, which when enabled, allows the power supply to be tied in with other emergency stop equipment. All these pins are isolated to earth-ground as standard; no additional isolation equipment necessary.

Reference Dimensions

Download MS Series III Drawing

Front Panel Dimensions

Rear Panel Dimensions

Output Bus Bar Dimensions