NH Research

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  • NH Research Model 9410 Grid Simulator

    NHR’s Regenerative Grid Simulator (9410) is a unique four-quadrant bi-directional AC/DC source that simulates the utility voltage and regenerates power sourced by grid-tied inverters. Greater than 90% of power is returned to the facility thereby providing significant energy savings. The 9410 is used as a grid simulator, or emulator for testing PV inverters and other grid-tied products for compliance to IEEE 1547, UL 1741, and global industry standards. A wide-range of AC conditions can be emulated including phase imbalance (in voltage and/or phase angle relationship), voltage sag, frequency changes and harmonic injection.

    • 8 models – Power from 4kW/101/2 kVA to 96kW/252kVA
    • Reactive Power capability 2.6 x True Power
    • Output Frequency – DC, 30 to 100Hz (option up to 880Hz)
    • Output DC Voltage Ranges – 200, 400VDC
    • Four-Quadrant, Bi Directional
    • Programmable 1, 2 or 3-Phase modes
    • Powerful line disturbance creation tools
    • High-resolution waveform digitizer with scope display & charting
    • Sink power returned back to facility mains
    • 9” Touch-Panel user interface
  • NH Research Model 9420 AC Source with HiVAR Technology

    NHR’s Model 9420  AC Power Source redefines selection of an AC Source by addressing how to compensate for reactive power from capacitive or inductive elements in the load. Often overlooked when sizing an ac source, reactive power negates some portion of nominal VA power in order to arrive at true power (Watts) that does the real work. Traditional AC sources list only their VA rating leaving it up to the user to figure out how much true power remains after reactive power reductions. In many cases that reduction is substantial and then requires selecting a much larger VA-rated source than originally anticipated. The increased cost and size penalties are often considerable.

    • Voltage Range – 175/350VRMS, 200/400VDC
    • Power: 8kW/21kVA to 96kW/252kVA
    • Flexibility provides for single, split, three-phase operation plus full-power DC
    • HiVAR design eliminates derating nominal power due to reactive loads
    • Frequency – 30 to 880Hz
    • High-Resolution Waveform Digitizer & Scope display
    • Precision Ultra-Low Current Measurements
    • Seamless, constant-power operating envelope
    • Built-in 9” touch-panel user interface for manual control & measurement display
    • Graphical waveform editor for user-defined waveforms
    • High-level line disturbance programming Macros
    • External PC option to host NHR emPower® Test Sequencer
    • Alternate programming in LabVIEW, native SCPI, & other IVI-compliant languages
  • NH Research Model 4312 Modular DC Load

    NHR’s Model 4312 is the concept of having an advanced digital measurement system built in to each load plus being able to combine up to 16 of such loads into a single chassis opens several new test strategy possibilities that have significant economic and quality benefits. The most important test strategy is the ability to test consumer power devices such as chargers, adapters and LED drivers in parallel, up to 16 in a single pass. Test times for such devices are now measured in a few seconds.

    The other major advantage of this distributed measurement is the ability to test each output of a multi-output power conversion device simultaneously rather than sequentially. Not only does this dramatically reduce the overall test time but also provides far better channel-to-channel performance measurements including dynamic cross effects. In this manner quality of the devices tested takes a large step forward because the parallel tester better simulates real life conditions where all outputs are exercised together.

    • 150, 300, & 600W @ 120V with advanced measurement capability built-in
    • Mix & match loads for maximum configuration flexibility
    • Up to 16 loads in a single, 8 3/4″ / 5U Model 4300 chassis
    • Front loaded & front connections
    • 3 voltage and 3 current ranges for improved accuracy
    • High-resolution waveform capture for analysis of dynamic transients
    • Isolated digital inputs & outputs for test fixture support
    • PC/LAN control with LabVIEW & IVI drivers
  • NH Research Model 4350 Modular DC Load

    NHR’s Model 4350 DC Loads have been used across a variety of major company initiatives and remains a highly competitive product on the market. The modular 4300 DC electronic load is ideal for rack and stack ATE customers, military as well as aerospace applications. This flexible load measurement system can be reconfigured easily to test products in parallel which better simulates real-world conditions and improves testing time. The capability to combine up to 16 loads into a single chassis, with fast transient speed and synchronous measurement, opens several new test strategy possibilities. The 4300 DC electronic load is perfect for applications that require simultaneous testing of multiple power conversion UUTs or multi-output power supplies.

    Another major advantage is the built-in 4301 Digital Power Analyzer that provides accurate UUT input measurements dedicated to each tester channel. This advanced digital measurement system is capable of measuring devices in a few seconds. The Analyzer includes a Power Meter, Multi-Meter, and Oscilloscope that together provides a powerful test solution.

    • 150, 300, & 600W @ 500V with advanced measurement capability built-in
    • Up to 16 loads in a single, 8 3/4″/ 5U Model 4300 chassis
    • Front loaded & front connections
    • 3 voltage and 3 current ranges for improved accuracy
    • High-resolution waveform capture for analysis of dynamic transients
    • Isolated digital inputs & outputs for test fixture support
    • PC/LAN control with LabVIEW & IVI drivers
  • NH Research Model 4700 High Current DC Load

    NHR’s 4700 Programmable DC Electronic Loads are ideal for medium-to-high-power testing in all markets. The DC electronic loads can be used as part of an automatic test station or as a stand-alone, bench-top set-up. The 4700 DC Electronic Load is a relatively low-voltage (120V) with high-current capability. The high-voltage DC Electronic Load (4760) is a high-voltage electronic load (600V) for high power applications.

    The High-Current DC Electronic Load of the 4700 is used in a wide variety of applications that involve automated testing of power conversion device outputs to simulate real-world loading conditions. This DC Electronic Load is ideal for testing applications that require a full current at low voltages, fast-transient simulation capability and comprehensive measurements. Typical applications include the testing of power conversion/storage products such as DC converters, DC power supplies, fuel cells and batteries, and telecom rectifiers.

    • 1 to 36kW @ 120
    • High-resolution waveform capture for analysis of dynamic transients
    • 18 built-in, Precision Voltage, Current, Power and Timing Measurements
    • Isolated digital inputs and outputs for test fixture support
    • Optional touch-panel user interface
    • PC/LAN control with LabVIEW & IVI drivers
  • NH Research Model 4760 High Power DC Load

    NHR’s 47600 Programmable DC Electronic Loads are ideal for medium-to-high-power testing in all markets. The DC electronic loads (4700/4760) can be used as part of an automatic test station or as a stand-alone, bench-top set-up. The 4760 High-Voltage DC Electronic Load  is designed for testing applications that require high-voltage up to 600V and an exceptionally wide range of measurements, including product dynamic performance. Typical applications include the testing of power conversion/storage products such as DC converters, DC power supplies, fuel cells and batteries, and telecom rectifiers.

    • 600V, 1kW / 50A to 36kW / 1800A DC Loads
    • 100kS/s Waveform Capture
    • 2 Digital Inputs
    • 4 Digital Outputs
    • Complex load profile playback
    • Multiple hardware control options
    • Manual touch-panel user interface
    • emPower™ test executive
    • PC/LAN control with LabVIEW & IVI drivers
  • NH Research Model 9430 Regenerative 4 Quadrant AC Electronic Load

    NHR’s Model 9430 is a 4-quadrant, Regenerative AC Load that is current-regulated with selectable phase inputs/outputs and a built-in waveform digitizing measurement system. In the sink mode, it sends power back to the facility mains rather than dissipated as heat. The 9430 can simulate almost any linear or non-linear load. Applications include testing of Vehicle to Grid (V2G), solar and grid-tied inverters, UPSs, AC sources, rectifiers, circuit breakers and fuses. TheHIVAR design provides reactive loading without derating True Power. This advanced design feature allows for testing high reactive load input power without the customary reduction of true power (Watts) normally required with conventional loads.

    • Power: 4 to 96kW
    • Single, Split or Three-Phase programmable
    • Voltage Range: 10 to 350VAC
    • Output Frequency – 30 to 880Hz
    • Output DC Voltage Ranges – 10 to 400VDC
    • Four-Quadrant, Bi Directional
    • Reactive power capability 2.6 x Real Power
    • Power factor range: -1 to +1
    • Crest factor range: 1.414 to 4.000
    • High-resolution Waveform Digitizer
    • High power density/minimum rack space
    • Sink power regenerated back to facility with >90% efficiency
    • 9” Touch-Panel
  • NH Research Model 4600 AC Electronic Load

    NHR’s Model 9430 AC Electronic Load  is designed for test applications that require linear and non-linear AC loading in several emulation modes with Power and Crest Factor control. This programmable versatility allows testing with a wide variety of potential field operating conditions to assure unit-under-test (UUT) reliability. Products tested include uninterruptible power supplies (UPS), AC sources, inverters, switches, circuit breakers, fuses and connectors.

    • Power: 3 to 36kW
    • Current Range: 30 – 360A
    • Voltage Range: 50 to 350VAC
    • Single and 3-phase configurations
    • 12 High-Accuracy internal measurements
    • 100-step macro for per cycle loading changes
    • User-defined waveforms
    • CC, CR, CV, CP, SC, UPF and CNL emulation modes
    • PC control using Lab VIEW and IVI drivers
    • LAN, RS232, USB communication interface
    • PC soft panel GUI with Current, Voltage & Power Waveform Display
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