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AMETEK Programmable Power News
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.
AMETEK Extends Industry Leading Sorensen SG Series of High-Power DC Supplies
- Posted on 25/05/11 07:00AM
SAN DIEGO, CA – March 28, 2011 – AMETEK Programmable Power has expanded its Sorensen SG Series of programmable precision high-power DC power supplies with four new output voltage offerings of 10Vdc, 15Vdc, 20Vdc and 30Vdc to add to its current range of 40Vdc to 800Vdc. These lower voltage units have output power specifications ranging from 4 kW to 15 kW. The 20 Vdc model, for example, can supply up to 750 A in the standard 3U package, while the 10 Vdc, 12 kW unit can deliver up to 1,200A in the same 3U form factor.

Other industry-leading features of the expanded output voltages of Sorensen SG Series include:
• Industry leading voltage and current slew rates, both up and down programming
• Improved power factor correction (PFC), with 3-phase 208, 400 and 440/480 Vac input with the standard unit supporting both 50/60 Hz and 400 Hz AC input frequency

The SG Series is one of the most popular DC power supplies on the market with more than 10,000 units in the field. The SG Series already leads the industry in power density, delivering up to 15 kW in just 3U. Depending on the output voltage, one to six modules can be configured in a single chassis to deliver 5 kW to 30 kW of power; these can easily be paralleled to achieve up to 150 kW of total power.

All of the models in the SG Series are available with either Sorensen General-purpose Intelligent (SGI) control or Sorensen General-purpose Analog (SGA) control.
Units with SGI control combine onboard intelligent controls with the outstanding power electronics common to all SG Series supplies. These controls enable sophisticated sequencing, constant power mode and save/recall of common setups, making the SGI ideal for repetitive testing using complex or compliance waveforms. An impressive vacuum fluorescent graphical display in eight languages, context sensitive “soft” keys and front panel keyboard simplify programming of the SGI.

Units with SGA control are designed for users who require simple front panel analog controls or remote analog control. With the same high performance power electronics as the SGI, the SGA provides essential features like 10- turn potentiometers for setting voltage and current, 3 ½ digit LED readout plus front panel OVP preview/adjustment and reset.

Units with SGI control come with standard analog control and an RS-232C port. GPIB/IEEE 488.2 and LXI Ethernet ports are optional. Units with SGA control come standard with remote analog control and can be fitted with an RS-232C port, a GPIB/IEEE 488.2, and an LXI Ethernet port as optional features.

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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