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RS Series

Model: RS Series
Voltage: 150V - 400V
Current: 0A - 1500A
Power: 90kVA - 1MVA
Overview: High power AC and DC Power Source

  • Overview +

    RS Series

    Product Overview
    The RS Series consists of multiple high power AC and DC power systems that provide controlled AC and DC output for ATE and product test applications.

    This high power AC and DC test system covers a wide spectrum of AC and DC power applications at an affordable cost. Using state-of-the-art PWM switching techniques, the RS series combines compactness, robustness and functionality in a compact floor-standing chassis, no larger than a typical office copying machine. This higher power density has been accomplished without the need to resort to elaborate cooling schemes or additional installation wiring. Simply roll the RS unit to its designated location (using included casters), plug it in, and the RS series is ready to work for you.

    Simple Operation
    The RS Series can be operated completely from its menu driven front panel controller. A backlit LCD display shows menus, setup data, and read-back measurements. IEEE-488, RS232C, USB and LAN remote control interfaces and instrument drivers for popular ATE programming environments are available. This allows the RS Series to be easily integrated into an automated test system. For advanced test applications, the programmable controller version offers full arbitrary waveform generation, time and frequency domain measurements, and voltage and current waveform capture.

    The RS90 delivers output up to 90kVA in AC mode and 65% of rated power in DC and AC+DC mode.

    For higher power requirements, the RS180, RS270, RS360, RS450 and RS540 models are available. Available reconfigurable RS models (-MB designation) provide multiple controllers which allow separation of the high power system into up to six individual RS90 units for use in separate applications. This ability to reconfigure the system provides an even greater level of flexibility not commonly found in power systems.

    Product Evaluation and Test
    Increasingly, manufacturers of high power equipment and appliances are required to fully evaluate and test their products over a wide range of input line conditions. The built-in output transient generation and read-back measurement capability of the RS Series offers the convenience of a powerful, and easy to use, integrated test system.

    Regenerative, bidirectional “Green” Power Solution

    The RS Series features the ability to both source and sink current, i.e. bi-directional current flow. The RS amplifier is designed to reverse the phase relationship between the AC input

    Programming sink (-SNK) mode operation.

    With an output frequency range to 819 Hz (or 905 Hz with -HF option), the RS Series is well suited for aerospace applications. Precise frequency control and accurate load regulation are key requirements in these applications. The available IEEE-488 remote control interface and SCPI command language provide for easy integration into existing ATE systems. The RS Series eliminates the need for several additional pieces of test equipment, saving cost and space. Instrument drivers for popular programming environments such as National Instruments LabView™ are available to speed up system integration.

    Regulatory Testing
    As governments are moving to enforce product quality standards, regulatory compliance testing is becoming a requirement for a growing number of manufacturers. The RS Series is designed to meet AC source requirements for use in compliance testing such as IEC 61000, 3-2, 3-3, 3-11, 3-12, to name a few.

    Choice of voltage ranges
    The RS Series includeds 150V and 300V line to neutral. These models provide 3 phase output capability of 260 Vac or 520 Vac line to line respectively.
    For applications requiring more than 300 V L-N (or 520 V L-L), the optional -HV output transformer provides an additional 400 V L-N and 693 V L-L output range for use in AC mode only.

    High Crest Factor
    With a crest factor of up to 3.6, the RS Series AC source can drive difficult nonlinear loads with ease. Since many modern products use switching power supplies, they have a tendency to pull high repetitive peak currents. The RS90 can deliver up to 720 Amps of repetitive peak current (150 V AC range) per phase to handle high crest factor three phase loads.

    Remote Control
    Standard RS232C & USB IEEE-488 along with optional LAN remote control interfaces allow programming of all instrument functions from an external computer. The popular SCPI command protocol is used for programming.

    Application Software
    Windows® application software is included. This software provides easy access to the power source's capabilities without the need to develop any custom code. The following functions are available through this GUI program:
    • Steady state output control (all parameters)
    • Create, run, save, reload and print transient programs
    • Generate and save harmonic waveforms.
    • Generate and save arbitrary waveforms.
    • Measure and log standard measurements
    • Capture and display output voltage and current waveforms.
    • Measure, display, print and log harmonic voltage and current measurements.
    • Display IEEE-488, RS232C, USB and LAN bus traffic to and from the AC Source to help you develop your own test programs.
    1. Requires PC running WindowsXP™ or Windows 2000™ / 2007.

    Harmonic Waveform Generation
    Using the latest DSP technology, the RS Series programmable controller is capable of generating harmonic waveforms to test for harmonics susceptibility. The Windows Graphical User Interface program can be used to define harmonic waveforms by specifying amplitude and phase for up to 50 harmonics. The waveform data points are generated and downloaded by the GUI to the AC source through the remote interface. Up to 200 waveforms can be stored in nonvolatile memory and given a user defined name for easy recall.

    All RS Series configurations offer three phase waveform generation, allowing independent phase anomalies to be programmed. It also allows simulation of unbalanced harmonic line conditions.

    Arbitrary Waveform Generation
    Using the provided GUI program or custom software, the user also has the ability to define arbitrary AC waveforms. The arbitrary waveform method of data entry provides an alternative method of specifying AC anomalies by providing specific waveform data points. The GUI program provides a catalog of custom waveforms and also allows real-world waveforms captured on a digital oscilloscope to be downloaded to one of the many AC source's waveform memories. Arbitrary waveform capability is a flexible way of simulating the effect of real-world AC power line conditions on a unit under test in both engineering and production environments.

    RS Series - AC and DC Transient Generation
    The RS Series controller has a powerful AC and DC transient generation system that allows complex sequences of voltage, frequency and waveshapes to be generated. This further enhances the RS's capability to simulate AC line conditions or DC disturbances. When combined with the multiphase arbitrary waveform capabilities, the AC and DC output possibilities are truly exceptional. Transient generation is controlled independently yet time synchronized on all three phases. Accurate phase angle control and synchronized transient list execution provide unparalleled accuracy in positioning AC output events.

    Transient programming is easily accomplished from the front panel where clearly laid out menu's guide the user through the transient definition process.

    RS Series - Measurement and Analysis
    The RS Series is much more than a programmable AC, DC or AC+DC power source. It also incorporates an advanced digital signal processor based data acquisition system that continuously monitors all AC source and load parameters. This data acquisition system forms the basis for all measurement and analysis functions. These functions are accessible from the front panel and the remote control interface for the RS Series.

    Conventional Measurements [All controllers]
    Common AC and DC measurement parameters are automatically provided by the data acquisition system. These values are displayed in numeric form on the front panel LCD display. The following measurements are available: Frequency, Vrms, Irms, Ipk, Crest Factor, Real Power (Watts), Apparent Power (VA) and Power Factor.

    Harmonic Analysis
    The RS Series provides detailed amplitude and phase information on up to 50 harmonics of the fundamental voltage and current (up to 16 kHz). Harmonic content can be displayed in both tabular and graphical formats on the front panel LCD for immediate feedback to the operator. Alternatively, the included GUI program can be used to display, print and save harmonic measurement data. Total harmonic distortion of both voltage and current is calculated from the harmonic data.

    Waveform Acquisition
    The measurement system is based on real-time digitization of the voltage and current waveforms using a 4K deep sample buffer. This time domain information provides detailed information on both voltage and current waveshapes. Waveform acquisitions can be triggered at a specific phase angle or from a transient program to allow precise positioning of the captured waveform with respect to the AC source output. The front panel LCD displays captured waveforms with cursor readouts. The included GUI program also allows acquired waveform data to be displayed, printed, and saved to disk.

    Features And Benefits
    Key Features
    • High Power AC and DC Power Source
      Programmable AC and DC power for frequency conversion and product test applications
    • Expandable Power Levels
      Available output power of 90 kVA per unit and multi-unit configurations for power requirements up to 540 kVA and above
    • Arbitrary & Harmonic Waveform Generation
      User defined voltage waveform and distortion programming
    • Regenerative, bidirectional "Green" Power Solution
      Automatic crossover between Source and Current Sink power mode offers regenerative capabilities. Regenerate up to 100% of the rated output power back to the utility grid during sink mode operation. (-SNK option)
    • Remote Control
      Standard RS232C & USB along with optional IEEE-488 & LAN Interfaces are available for automated test applications
  • Specifications +

    RS Series : Specifications
    Operating Modes
    RS90 AC, DC and AC+DC
    AC Mode Output
    Frequency Range: 16.00-819.0 Hz, -LF Option: 16.00-500.0 Hz, -HF Option: 16.00-905 Hz (supplemental specifications apply above 819 Hz). Resolution: 0.01 Hz: 16.00 - 81.91 Hz, 0.1 Hz: 82.0 Hz - 819.1 Hz, 1 Hz: 820-905 Hz, SNK 16-500Hz
    Phase Outputs 3 Phase, Neutral Floating, Coupling DC (except -HV Opition and -XU)
    Total Power RS90: 90kVA, RS180: 180kVA, RS270: 270kVA, RS360: 360kVA, RS450: 450kVA, RS540: 540kVA. Please consult factor for power levels above 540kVA
    Load Power Factor 0 to unity at full output current
    AC Mode Voltage
    Voltage Ranges Range V Low V High    
    AC 0-150 V 0-300 V Load Reg < 0.25 % FS DC to 100 Hz,
    < 0.5 % FS 100 Hz to 819 Hz
    AC + DC 0-150 V 0-300 V Line Reg < 0.1% FS for 10 % line change
    External Sense Voltage drop compensation (5% Full Scale)
    Harmonic Distortion (Linear) Less than 0.5% from 16 - 66 Hz, Less than 1% from 66 - 500 Hz, Less than 1.25% above 500 Hz
    DC Offset < 20 mV
    Load Regulation 0.25% FS @ DC - 100 Hz, 0.5% FS > 100 Hz
    External Amplitude Modulation Depth: 0 - 10 %, Frequency: DC - 2 KHz
    Voltage slew rate 200 µs for 10% to 90% of full scale change into resistive load, 0.5V / µSec
    AC Mode Current
    Steady State AC Current @ Full Scale Voltage Output Model RS90 RS180 RS270 RS360 RS450 RS540
    V Low 200A 400A 600A 800A 1000A 1200A
    V High 100A
    Per Phase
    Per Phase
    Per Phase
    Per Phase
    Per Phase
    Per Phase
    Note: Constant power mode provides increased current at reduced voltage.
    See chart below for power up to 125% of Full Scale Current Output at reduced voltages.
    Peak Repetitive AC Current Up to 3.6 x rms current at full scale voltage
    Programming Accuracy Voltage (rms): ± 0.3 Vrms, Frequency: ± 0.01 % of programmed value, Current Limit: - 0 % to + 5 % of programmed value + 1A, Phase: < 0.5° + 0.2°/ 100 Hz with balanced load
    Programming Resolution Voltage (rms): 100 mV, Frequency: 0.01 Hz from 16 - 81.91 Hz, 0.1 Hz from 82.0 - 819 Hz, Current Limit: 0.1 A, 3 phase mode, 1.0 A, 1 phase mode, Phase: 0.1°
    Constant Power AC Mode - Available Max. AC Current
    Measurements - Standard
    Parameter Frequency RMS
    Peak Current VA
    Real Power Power Factor (>0.2
    Range 16.00 -
    0-400V 0 - 300A 0 - 800 Amps 0–90
    0.00 -
    Accuracy* (±) 0.01% +
    100 -

    100 -500Hz

    0.5A +0.2%,
    0.5A +0.5%, 100 - 500Hz
    0.5A +1.0%,
    +0.2%, <100Hz
    100 -
    +1.0%, >500Hz
    +0.2%, <100Hz
    100 -
    +1.0%, >500Hz
    0.01, <100Hz
    100 - 820Hz
    Resolution* 0.01 to 81.91Hz
    0.1 to 500Hz
    1Hz above 500Hz
    0.01V 0.01A 0.01A 10VA 10W 0.01
    Note: Constant power mode provides increased current at reduced voltage. See chart below
    Measurements - Harmonics
    Parameter Range Accuracy* (±) Resolution
    Frequency Fundamental 16.00 - 820 Hz 0.03% + 0.03 Hz 0.01 Hz
    Frequency harmonics
    RS90 RS180 RS270 RS360 RS450 RS540
    32.00 Hz – 16 KHz 0.03% + 0.03 Hz 0.01 Hz
    32.00 Hz – 48 KHz 0.03% + 0.03 Hz 0.01 Hz
    Phase 0.0 - 360.0° 2° typ. 0.5°
    Voltage Fundamental 0.75V 0.01V
    Harmonic 2 - 50 0.75V + 0.3% + 0.3%/kHz 0.01V
    Current Fundamental 0.5A 0.1A
    Harmonic 2 - 50 0.15A + 0.3% + 0.3%/kH 0.1A
    Note: For current measurements, specifications apply from 2% to 100% of measurement range.
    DC Mode Output
    Power Maximum DC Power at full scale of DC voltage range.
    RS90: 60kW, RS180: 90kW, RS270: 135kW, RS360: 180kW, RS450: 225kW, RS540: 270kW
    Voltage Ranges Range: Low (0 - 200 V), High (0 - 400 V)
    Output Accuracy ± 1 Vdc
    Load Regulation < 0.25 % FS
    Line Regulation < 0.1% FS or 10 % line change
    Ripple < 2 Vrms Lo Range, < 3 Vrms Hi Range
    DC Mode AC+DC Mode
    Model RS90 RS180 RS270 RS360 RS450 RS540
    V Low 100A 200A 300A 400A 500A 600A
    V High 50A 100A 150A 200A 250A 300A
    Per Phase Per Phase Per Phase Per Phase Per Phase Per Phase
    Note: Constant power mode provides increased current at reduced voltage.
    See chart above
    Current Limit Programmable from 0 A to max. current for selected range
    AC+DC Mode Output
    Output Power Maximum current and power in AC+DC mode is same as DC mode
    Over Load Remote shutdown, External Sync, Clock/Lock
    Outputs Function Strobe / Trigger out, Clock/Lock
    System Interface
    Inputs Remote shutdown, External Sync, Clock/Lock
    Outputs Function Strobe / Trigger out, Clock/Lock
    Remote Control
    IEEE-488 Interface IEEE-488 (GPIB) talker listener. Subset: AH1, C0, DC1, DT1, L3, PP0, RL2, SH1, SR1, T6, IEEE-488.2 SCPI Syntax
    RS232C Interface 9 pin D-shell connector (Supplied with RS232C cable)
    LAN ( option ) Ethernet Interface: 10BaseT, 100BaseT, RJ45
    USB Version: USB 1.1; Speed: 460 Kb/s maximum
    Output Relay Push button controlled or bus controlled output relay
    Waveform Types Sine, Square, Clipped sine, User defined
    User defined waveform storage Four groups of 50 user defined arbitrary waveforms of 1024 points for a total of 200. One group can be active at a time
    AC Input
    Voltage Must be specified at time of order. All inputs are L-L, 3ø, 3 wire + Gnd. 208 ± 10% VAC, 230 ± 10% VAC, 400 ± 10% VAC, 480 ± 10% VAC
    Line Voltage
    (3 phase, 3 wire + ground (PE))
    208 VLL ±10%, 230 VLL ±10%, 400 VLL ±10%, 480 VLL ±10%
    Line VA
    RS90 RS180 RS270 RS360 RS450 RS540
    106 KVA 212 KVA 318 KVA 424 KVA 530 KVA 636 KVA
    350 ARMS @ 187 VLL Each RS90 chassis requires its own AC service.
    314 ARMS @ 207 VLL Total Line currents are
    2 x RS90
    Total Line currents are
    3 x RS90
    Total Line currents are
    4 x RS90
    Total Line currents are
    5 x RS90
    Total Line currents are
    6 x RS90
    180 ARMS @ 360 VLL
    150 ARMS @ 432 VLL
    Line Frequency 47 - 63 Hz
    Efficiency 85 % (typical) depending on line and load
    Power Factor 0.95 (typical) / 0.99 at full power.
    Inrush Current
    RS90 RS180 RS270 RS360 RS450 RS540
    460 Apk
    @ 208 VLL
    Each RS90 chassis
    its own AC service.

    Total Line currents
    are 2 x RS90

    Each RS90 chassis
    its own AC service.

    Total Line currents
    are 3 x RS90

    Each RS90 chassis
    its own AC service.

    Total Line currents
    are 3 x RS90
    Each RS90 chassis
    its own AC service.

    Total Line currents
    are 5 x RS90
    Each RS90 chassis
    its own AC service.

    Total Line currents
    are 6 x RS90
    440 Apk
    @ 230 VLL
    264 Apk
    @ 400 VLL
    220 Apk
    @ 480 VLL
    Hold-Up Time >10ms
    Isolation Voltage 2200 VAC input to output, 1350 VAC input to chassis
    AC Service
    Inputs/Outputs Rear Panel Access
    Regulatory IEC61010, EN50081-2, EN50082-2, CE EMC and Safety Mark requirements
    EMI CISPR 11, Group1 , Class A
    Connectors AC Input and Output terminal blocks behind rear panel access cover. IEEE-488 (GPIB) connector behind rear panel access cover. 9 pin D-Shell RS232C connector*, behind rear panel access cover. Remote voltage sense terminal block behind rear panel access cover. System Interface Connector, DB-37 behind rear panel access cover. *RS232 DB9 to DB9 cable supplied
    Physical Dimensions
    RS90 Dimensions Height: 74.5" (1892.3 mm) , Width: 30.3" (769.6mm), Depth: 38.3" (972.8mm),
    RS90 Weight Net: 2150 lbs / 975 Kg approximately, Shipping: 2450 lbs / 1111 Kg approximately
    Chassis RS90: Casters and forklift openings
    Vibration and Shock Designed to meet NSTA project 1A transportation levels. Units are shipped in wooden crate with forklift slots
    Air Intake/Exhaust Forced air cooling, front air intake, rear exhaust
    Operating Humidity 0 to 95 % RAH, non condensing
    Temperature Operating: 0-35* (30*C max is CP mode), Storage -20 to +85*C
    -MB Option
    Model AC Output Power Phase Outputs AC/DC Voltage Range Controller
    RS180-3Pi-MB 180kVA 3 150/200 & 300/400 2 x RS90
    RS270-3Pi-MB 270kVA 3 150/200 & 300/400 3 x RS90
    RS360-3Pi-MB 360kVA 3 150/200 & 300/400 4 x RS90
    RS450-3Pi-MB 450kVA 3 150/200 & 300/400 5 x RS90
    RS540-3Pi-MB 540kVA 3 150/200 & 300/400 6 x RS90
    Reconfigurable systems can be separated into stand-alone RS90-3Pi models or combined for higher power levels.
    Steady State AC RMS Current in Regeneration Mode ( -SNK Option )
    Model RS90 RS180 RS270 RS360 RS450 RS540
    AC Mode V Lo
    V Hi
    per phase
    per phase
    per phase
    per phase
    per phase
    per phase
    Non Volatile Mem. storage 16 instrument setups, 200 user defined waveforms [Pi only]
    Unit Protection
    Input Over current In-line fast acting fuses. Circuit breaker for LV supply.
    Input Over voltage Automatic shutdown.
    Input Over voltage Transients Surge protection to withstand EN50082-1 (IEC 801-4, 5) levels.
    Output Over current Adjustable level constant current mode with programmable set point.
    Output Short Circuit Peak and RMS current limit.
    Over temperature Automatic shutdown
    System Specification
    External Modulation 0 to 10%
    Synchronization Input Isolated TTL input for external frequency control.
    Trigger Input External trigger source input.
    Trigger Output 400 μs pulse for voltage or frequency change Isolated TTL output Output reverts to Function strobe frequency change. Isolated TTL output. Output reverts to Function strobe when not uses as Trig Out. This function is mutually exclusive with the Function Strobe output.
    Function Strobe Active for any voltage or frequency program change. 400 μs pulse for voltage or frequency change.
    Output Status Monitors status of output relay. SELV Isolated TTL output.
    Specs subject to change without notice.
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    Options and Accessories
    Supplied with Standard: User Manual on CD ROM. Pi version: User/Programming Manual and Software on CD ROM. RS232C serial cable.
    Input Voltage Settings : Specify input voltage (L-L) setting for each RS system at time of order
    208 Configured for 208 V ±10 % L-L, 4 wire input
    230 Configured for 230 V ±10 % L-L, 4 wire input.
    400 Configured for 400 V ±10 % L-L, 4 wire input.
    480 Configured for 480 V ±10 % L-L, 4 wire input
    Standard Model Options : Specify output range on standard models. All range values shown are Line to Neutral.
    - 150 Configured for 150 V AC and 200 V DC output ranges.
    - 300 Configured for 300 V AC and 400 V DC output ranges.
    - 411 *IEC 1000-4-11 test firmware.
    - LF Limits maximum frequency to 500 Hz.
    - FC Modifies output frequency control to ± 0.25%
    - LAN Ethernet Interface
    - HF Increases max frequency to 1000 Hz
    - 413 *IEC 1000-4-13 Harmonics & Interharmonics test firmware.
    - HV Adds 400 V L-N AC-only output range
    - XV Adds other AC-only output range. Consult factory.
    - LKM Clock/Lock Master
    - LKS Clock/Lock Auxiliary
    - WHM Watt-Hour Measurement option.
    - SNK Bidirectional auto source and sink mode. Offers up to 100% power sink capability
    Avionics Test Routine Options
    - ABD ABD0100.1.8 Test Option. -Rev D-E
    - AMD Airbus AMD24 Test -Rev A-C
    - A350 Airbus Test Software -Rev A-C
    - B787 Boeing 787 Test Software -Rev A-C additional.
    - 704 Mil Std 704 A - F test - firmware/ software.
    - 160 RTCA/DO-160D, DO-160E, and EUROCAE test firmware.
    * Note: Reference the Avionics Test User Manual P/N 4994-971 for a complete listing of performance capabilities.
    Feature Comparison
    Model Pi
    AC mode X
    DC mode X
    AC+DC mode X
    Dual V Range X
    Transient programming X
    Arbitrary waveforms X
    Measurements X
    Harmonic measurements X
    Waveform acquisition X
    Bi-Directional Regenerative X
    IEEE / RS232 X