California Instruments high performance, high reliability ac power sources

are available in the UK from TTid.

California Instruments TL series ac power supplies - available in the UK from TTid
 

Description
The TL Series consists of two models, 251TL and 351TL, both using linear technology. These units are ideal sources for special purpose AC power applications that require variable voltage and frequency at high frequencies and low noise and distortion levels. Both units provide single-phase output. With simple knobs used to set voltage, frequency and current limit, the TL Series provides an inexpensive source of low AC power. All TL Series power source models can be used in table-top mode or rack-mounted.

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Controller Capabilities
The TL Series uses a precision digital sine wave generator to produce a low distortion output. Dual LCD readouts clearly display programmed settings for voltage, current limit and frequency. Load current is measured using true RMS sensing and can be displayed on the front panel as well. Adjusting voltage, frequency and current limit is accomplished using a set of digitally encoded rotary knobs. For ATE applications, both IEEE-488 and RS232C interfaces are available as an option.

Exclusive Features
  • 45 Hz to 8000 Hz (Contact factory for requirements above 8 KHz)
  • Dual voltage ranges
  • Easy to Use
  • Programmable
  • Standard Current measurement
  • Rack Mount
  • Optional measurements for Peak Current, Voltage, Real Power, Apparent Power, Power Factor and Crest Factor (with option -OP1)
  • Rear panel Connections. (Front panel connections optional.)
  • Optional IEEE-488 and RS232C interfaces
  • CE Mark

    Applications
    The precise voltage regulation, low distortion and noise levels and wide frequency range of the TL Series, combined with its easy to use front panel, make it a great precision Lab AC source. Built in measurements may be added (option -OP1) to extend the units usefulness for design applications of AC powered products. Applications requiring high frequency output such as gyro's, sensors and variable frequency controllers can be tested and operated by a TL Series unit at up to 8000 Hz. Contact factory for higher frequency requirements.
    The included PC control program (requires -OP1 option) supports transient generation to simulate real-world AC line conditions like brownouts, voltage sags, surges and frequency fluctuations.

    Output Power
    The 351TL AC power source is rated for 350 VA with an output voltage between 90 % and 100 % of range and a load power factor of 0.7 to reflect typical operating conditions. Maximum RMS current is 2.8 A in the 135 V range. The 251TL is rated for 250 VA with an output voltage between 78 % and 100 % of range and a load power factor of 0.7. It's maximum current is 2.0 A in the 135 V range.

    Remote Control
    The optional remote control interface allows complete control of all AC source functions and provides measurement data to the controller. This allows the TL Series AC sources to be used as a low cost AC test system. A Windows™ Graphical User Interface (GUI) program is included with the interface option. Automatic power cycling and transient generation is made possible with the use of this GUI program. The GUI output control, measurement and transient screens are shown here. For quality assurance applications, measured voltage, current and VA readings can be logged to disk for documentation and analysis purposes. All data recorded is time stamped to create a complete history of each test run.
    Up to eight often-used front-panel setups can be stored in non-volatile memory for quick recall from the PC controller through the interface. If needed, the front panel can be locked out to prevent operator intervention during test runs.
    The 251TL and 351TL offer additional features over the bus such as the ability to select the turn-on or turn-off phase angle of the output voltage. This capability, combined with the peak current measurement function, enables inrush current analysis of a unit under test.

    AC Transient Generation
    Transient programming is supported by the GUI program with user defined transient lists of up to 100 steps. Available transient functions are voltage step, voltage drop, voltage sweep, voltage surge/sag, frequency step, frequency sweep, frequency surge/sag as well as functions that combine both voltage and frequency changes.
    The intuitive Windows™ interface greatly facilitates creating and storing often used transient programs. Transient programs can be recalled from disk and executed once, continuously or a specified number of times. Editing functions such as delete and insert make it easy to modify or expand existing programs. This capability makes it easy to evaluate products for immunity to common AC line disturbances such as brownouts, surges, swells, sags and frequency variations.


    Available Models:

    251TL 250 VA programmable single phase AC source
    351TL 350 VA programmable single phase AC source

    Factory Installed Options:
    -OP1 Option package 1. Includes:
    • IEEE-488 and RS232C remote control interface.
    • Complete measurements
    • Function Strobe output
    • Remote Inhibit input
    • Windows™ GUI program
    • RS232C serial cable.
    -RMS Rack-mount Slides.
    -SKT Dual universal front panel mounted output socket.
    -L22 Locking knobs. Prevents changes to output settings from front panel.


    Specifications:
  •   251TL 351TL
    Output power   250 VA 350 VA
    No of output phases   1 1
    Voltage low range 0-135 Vrms
    high range 0-270 Vrms
    Accuracy ± 0.1 % FS (45 - 100 Hz)
    ± 0.2 % FS (100 - 5000 Hz)
    ± 0.3 % FS (5000 - 8000 Hz)
    Resolution 0.1 V
    Load regulation
    (remote sense)    		 ± 0.1 % FS
    Line regulation ± 0.02 % FS
    Distortion (into resistive load) < 0.5 % (45 - 999 Hz)
    < 2.0 % (1000 - 8000 Hz)
    Noise (full scale, full power) -73 dB
    Frequency Range 45 - 8000 Hz
    Accuracy ± 0.02 %
    Resolution 0.01 Hz from 45.00 to 79.99 Hz
    0.1 Hz from 80.0 to 799.9 Hz
    1 Hz from 800 to 8000 Hz
    Max. rms. current Low range 2.4 Arms 2.8 Arms
    High range 1.2 Arms 1.4 Arms
    Max. peak current Low range 6.0 A 6.0 A
    High range 3.0 A 3.0 A
    Protection
    Current Limit Resolution 0.1 Arms
    Modes Const. Voltage or Const. Current
    Over Temperature   Ö
    Over Voltage   Ö
    Input
    Voltage   100, 115, 200, 230 ±10 % Vrms
    Line Current   < 16 Arms
    Frequency   47 - 440 Hz
    Hold up time   10 msec
    Measurements
    Current
    (Standard)    		 Range 0.0 - 4.0 Arms
    Accuracy 0.2 % FS + 0.3 % Rdng
    Resolution 0.001 Arms
    Peak Current
    (option -OP1)    		 Range 0.00 -12.00 A
    Accuracy 0.5 % FS + 0.5 % Rdng
    Resolution 0.01 A
    Voltage
    (option -OP1)    		 Range 0 - 300 Vrms
    Accuracy 0.1 % FS + 0.05 % Rdng
    Resolution 0. 1 Vrms
    Power
    (option -OP1)    		 Range 800 W
    Accuracy 0.5 % FS
    Resolution 0.2 W
    Apparent Power
    (option -OP1)    		 Range 800 VA
    Resolution 0.2 VA
    Power Factor
    (option -OP1)    		 Range 0.00 - 1.00
    Resolution 0.01
    Interface
      Option -OP1 RS232C and IEEE-488
    Regulatory   CE Mark
    Mechanical
    Dimensions HxWxD 5.25 x 16.8 x 22 inches
    133 x 427 x 560
    Weight (lb./kg)   70 lb. / 31 kg
    Operating Temp.   0 - 40° C
    Air intake / exhaust   rear / sides

    See also: RP Series for higher power switching AC power sources.
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TTid.co.uk - Thurlby Thandar instrument distribution
Glebe Road, Huntingdon, Cambridgeshire PE29 7DR
Tel: 01480 412451  Fax: 01480 450409  Web: www.ttid.co.uk  Email: info@ttid.co.uk