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AMETEK Programmable Power News
AMETEK Launches California Instruments CSW Series AC/DC Power Sources
- Posted on 01/07/11 07:00AM
New Generation Instruments Integrate High Performance Power Source and Power Analyzer to Replace Multi-Unit Systems

SAN DIEGO, CA – June 22, 2011 – AMETEK Programmable Power ( today introduced the California Instruments CSW Series, a completely new generation of AC/DC power sources that address the demands for more features without additional cost. By combining a flexible AC/DC power source with a high performance power analyzer, the compact CSW Series is capable of handling complex applications that have traditionally required multiple systems. This high level of integration simplifies wiring, saves valuable rack space, and ultimately reduces system cost.

5,550 - 33,300 kVA Output
A direct-coupled, transformerless design allows the CSW Series to output AC and DC on up to three separate phases or on the same phase. A single unit provides up to 5,550 kVA output, and up to six units may be connected in parallel to provide up to 33,300 kVA output. Instead of changing configuration settings from a front panel or reconfiguring internal jumpers, as you need to do with other systems, all a user needs to do is to connect each auxiliary power source to the master power source with a system interface cable. When powered, the system recognizes that auxiliary units are connected and automatically configures itself.

Powerful Waveform Generation
Built around a modern, DSP-based digital controller, the CSW Series offers powerful waveform-generation capabilities allowing users to more easily generate complex harmonic waveforms, transient waveforms, and arbitrary waveforms than ever before. This controller allows the power source to provide both AC and DC outputs simultaneously on any of the three outputs. The AC outputs can run at frequencies up to 5 kHz, much higher than the typical 1.2 kHz offered by most other AC power sources.

The supplied Windows Graphical User Interface (GUI) 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.

Using the GUI program, users can also specify and generate arbitrary waveforms. The program includes 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.

The CSW series can also be ordered with firmware that provides pre-programmed test sequences for avionics testing and EMC testing. For avionics testing, there are options for both Airbus and Boeing test sequences, and includes both commercial and military tests. For EMC testing, test firmware is available for running IEC 61000 tests.

Waveform Acquisition and Harmonic Analysis
The CSW Series includes a measurement system that digitizes voltage and current waveforms in real time and stores measurements in a 4K deep sample buffer. This time domain information provides detailed information on both voltage and current waveforms. 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.

The CSW Series can also provide detailed harmonic information on acquired waveforms. Information on the first 50 harmonics of the fundamental voltage and current signals (up to 16 kHz) are available. 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.

Other Key Features
The CSW Series has many other key features that make these power sources more effective and easier to use:
• High Crest Factor. With a crest factor of up to 3.25:1; the CSW Series AC source can drive difficult nonlinear loads with ease, delivering up to 64 A of repetitive peak current (156 V range) per phase.
• Ease of calibration. The CSW Series’ voltage, current, phase angle, and external signal input functions can be calibrated by using either the front panel or GUI.
• External Amplitude Modulation. The CSW Series provides an input that allows users to modulate the output with an external signal. A 0-5 Vrms provides 0 to ≥20% modulation for each of the three output phases (±2% of full scale output). Users can modulate any programmed function, be it internal or external.
• External Sync Input. When this feature is enabled, the CSW Series will track its output frequency and lock the Phase A output frequency to the frequency of the TTL signal on the external sync input. Users can program the phase angle of Phase A output relative to the edge of the external TTL input. There is no jitter between the outputs and the external TTL input.
• External Direct Input. Users can tie any of the CSW Series’ three phase outputs to an external analog input. They can also program the gain on each input separately.
• External Gain Control. The CSW Series has two inputs that allows users to set the gain externally on individual phases using an analog voltage. The maximum gain for the high-voltage input is 44.13, the maximum gain for the low-voltage input is 22.065.
• Clock Output. When enabled, the CSW Series will output clock pulses in sync with the output to enable two or three CSW Series units to sync with one another for systems that require more than three phase output.
• Sync Output. This TTL-level signal is available at either Sync Out BNC connector on the rear panel or the Trigger BNC connector on the front panel.

AMETEK Programmable Power is a division of AMETEK, Inc., a leading global manufacturer of electronic instruments and electromechanical devices with 2010 sales of $2.47 billion.

Full data sheet is available at:
AMETEK Launches RS Series AC and DC Power Sources For High Power, Flexible Control
- Posted on 25/05/11 08:00AM

SAN DIEGO, CA – April 21, 2011 – AMETEK Programmable Power ( today introduced the California Instruments RS Series of high-power AC/DC power systems. The units provide controlled AC and DC output for a wide variety of ATE and product test applications at an affordable cost. In AC mode, the RS Series delivers anywhere from 90 kVA up to 540 kVA of AC power. In DC or AC+DC mode, 50 percent of the AC power level is available simultaneously.

The RS Series provides a powerful combination of high power density and simple installation. The RS Series offers the highest AC power density available for high-performance test applications. This high power density is achieved by using state-of-the-art PWM switching techniques that enables the RS Series to be packaged in a compact, floor-standing chassis with a footprint no larger than a typical refrigerator. Further, this high power density is achieved without the need for elaborate cooling schemes.

Output Flexibility
The base unit of the RS Series is the RS90. It provides up to 90 kVA of AC power or 60 kW of DC power. AC output is three phase and can easily be switched between AC and DC mode of output from the front panel.

For higher power requirements, up to 540 kVA, the RS180, RS270, RS360, RS450 and RS540 models are available. When outfitted with multiple controllers, these units can be made to work as though they were individual RS90 units and used for different applications. This ability to reconfigure the system provides a level of flexibility not commonly found in power systems.

The controller for the RS Series uses the latest DSP technology and allows users to define a wide variety of output waveforms, including outputs with harmonic distortion and waveforms that simulate AC and DC transients. The controller features control of individual phases separately, allowing users to simulate single phase anomalies and unbalanced harmonic line conditions.

To program these waveforms, a Windows program with a graphical user interface (GUI) is provided. Using the GUI, a user specifies the waveform to be output, and the program then generates the waveform data points and downloads them to the unit via remote interface. Each unit can store up to 200 waveforms in nonvolatile memory for easy recall.

A unique feature of the RS Series is that it can both source and sink (traditional 4-Quadrant type) current and can reverse the phase relationship between the AC input voltage and current in order to regenerates up to 85 percent of the power back onto the utility grid resulting in significant reduction in the cost of operation. This mode of operation is particularly useful when testing grid-tied products that feed energy back onto the grid. An example is testing grid-tied Photovoltaic Inverters.

The RS Series Makes Measurements, Too
The RS Series incorporates an advanced digital signal processor-based data acquisition system that digitizes voltage and current waveforms in real time. The sample buffer is 4K deep. Users can trigger waveform acquisitions at any point in the waveform output, such as a specific phase angle, to allow precise positioning of the captured waveform with respect to the AC source output.

The data acquisition system automatically monitors common AC and DC parameters, including frequency, Vrms, Irms, Ipk, crest factor, real power (W), apparent power (VA), and power factor, and displays them on the front panel LCD display. These measurements are also available via the GUI which includes data logging capabilities.

The system also provides detailed amplitude and phase information on up to 50 harmonics of the fundamental voltage and current (up to 16 kHz). Users can display this information in both tabular and graphical formats on the front panel LCD or download this information to a computer to display, print or save the data. Total harmonic measurements of distortion for both voltage and current are calculated from the harmonic data.

Avionics Stimulus Test Routines
With an output frequency range of up to 1,000Hz the RS Series is ideally suited for aerospace applications. A full suite of Avionics Stimulus test routines such as Mil.Std. 704 Rev. A-F, DO-160 Rev. A-F, B787 Rev. A-C, ABD100.1.8 Rev. D-E and A350 Rev. A-C are optionally available.

Easy to Use
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. For remote control and ATE applications, users can use the standard RS232C, USB and IEEE- 488 or the optional LAN interfaces. The popular SCPI command protocol is used for programming, and instrument drivers for popular ATE programming environments are available.

Windows application software is included that provides easy access to the power source’s capabilities without the need to develop any custom code. With this program, users can graphically measure and log standard measurements; capture, display, and print output voltage and current waveforms; capture, display, and print harmonic voltage and current measurements;
create, run, save, reload, and print transient programs; generate and save harmonic and arbitrary waveforms; and display IEEE-488, RS232C, USB and LAN bus traffic to and from the AC Source to help you develop your own test programs.

AMETEK Programmable Power is a division of AMETEK, Inc., a leading global manufacturer of electronic instruments and electromechanical devices with 2010 sales of $2.47 billion.

AMETEK Launches Sorensen XG 1500 Programmable Power Supply
- Posted on 25/05/11 07:30AM
SAN DIEGO, CA – April 13, 2011 – AMETEK Programmable Power has introduced the Sorensen XG 1500 Series, a 1500 W programmable DC power supply designed for ATE, OEM, burn-in, and R&D applications. The unit is available in a number of different versions, with output voltages ranging from 8 V (187.5 A maximum output current) to 600 V (2.5 A maximum output current).

The Sorensen XG 1500, a product line extension to the highly successful XG 850 and X1700, has many features designed to make integration easier and save money:
• Wide variety of control options
• Front panel controls
• Programmable analog interface
• Output sequencing
• Output flexibility
DUT protection
• Auxiliary DC outputs
• “Green” features

Wide Variety of Control Options
The XG Series is available with standard USB, RS-232/RS-485 interfaces. It is also available with optional LXI Ethernet, GPIB IEEE 488.2 and isolated analog interfaces at substantially lower prices than competitors’ units. In most cases, these optional interfaces cost less than half that of competitor units.

While digital interfaces are important today, approximately half the programmable supplies currently in use are controlled with an analog voltage. For most power supplies on the market, the input voltage range is a fixed 0 - 5 V or 0 - 10 V. The XG 1500 lets users select whatever input voltage range they need from 0 - 2 V to 0 - 10 V. The XG 1500 can also be programmed by varying an input resistance, with the full scale resistance being any value between 2 and 10 .

Another feature of the XG family not found with other power supplies is called internal sequencing. With most programmable power supplies, to implement a voltage or current sequence, the test program has to issue a separate SCPI command for each step in the sequence. Because each command takes about 25 milliseconds to process, this can slow down the test sequence.

To solve this, XG users can separately store and run sequences, using SCPI commands. This greatly speeds up the process, as the XG 1500 can run up to 1,000 steps per second. This feature allows the user to run sequences that are just not possible with other programmable power supplies.

For users that may not require computer control, the XG Series allows users to completely control the supply from the front panel. Users can program output voltages and currents, turn on and off the auxiliary outputs, and turn on and off the main supply outputs.

Output Flexibility Reduces Integration Time
The XG 1500 allows users to configure its outputs in many different ways in order to ease integration. For example, if a user needs more output current, up to four XG 1500 units can be connected in parallel. When connected this way, each of the supplies provides an equal amount of current to the load. Not only do the supplies equally share the load, but provide faster transient response and more accurate load regulation due to the XG control technology.

For outputs higher than 600 V, users can connect two units in series. This is possible because the power supply outputs are floating with respect to chassis ground. Depending on the application, the ground can be connected to any point in the circuit.

Another output feature that eases integration is the user definable foldback shutdown mode control. When enabled, the power supply will turn off/disable the output and lock in foldback mode after a specified delay if the power supply transitions into CV (Constant Voltage) mode or into CC (Constant Current) mode, depending on the foldback mode settings. This feature is particularly useful for protecting current or voltage sensitive loads or driving reactive loads. If shutdown mode is not selected, the power supply will transition from CV to CC as setpoint and load requires.

Auxiliary Outputs Power Relays, Accessories
Many ATE systems require one or more low-power, fixed voltage supplies to power relays or other accessories. The XG Series eliminates the need for these additional supplies, along with complicated computer-controlled relay boards, by providing two standard auxiliary DC output channels—one 5 V, 0.4 A output and one 15 V, 0.4 A output. Users can control these outputs directly from the front-panel or via SCPI commands.

“Green” Features Reduce Power Consumption, Lower Noise
The Sorensen XG Series has a couple of “green” features that reduce power consumption and noise output. For example, when the XG has been idle for some time, the supply will go into “sleep mode,” much like a computer monitor. In this mode, the supply consumes less power, but since it is still “on,” the outputs come on more quickly than if the supply had been turned off.

Another green feature is the variable fan speed control. Unlike other supplies on the market, which turn on the forced air cooling fans when the supply output is on and off when the output is off, the XG 1500’s fan speed is proportional to the supply’s internal temperature. This control scheme reduces fan noise and increases fan life.

AMETEK Programmable Power is a division of AMETEK, Inc., a leading global manufacturer of electronic instruments and electromechanical devices with 2010 sales of $2.47 billion.
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