MeterTest VIS Voltage Integrated Source ISO 9001:2000 Features: Broad range of output voltages Broad range of allowable loads High accuracy and stability Low harmonic distortion Multilevel protection system Integrated Digital Signal Generator Generation of harmonics The VIS Voltage Integrated Source is a single-phase alternating voltage source, designed for use in electricity meter testing systems and in laboratories. The output voltage is isolated and independent of mains voltage. The power stage of the source utilizes the Power Width Modulation (PWM) technology, which ensures high efficiency and thus contributes very small heat losses. The stage is driven by an onboard Digital Signal Generator. The control signal may be composed of harmonics of independently defined amplitudes and phases. The internal feedback loop utilizes the DSP technology. Advanced algorithms applied ensure high stability of amplitude and phase angle as well as low distortions of the output voltage over a full range of allowable loads of various characters. A multilevel protection system implemented protects the source against overload, short circuit, overheat and makes operation of the device reliable and safe. The VIS device is equipped with an isolated serial interface and can be operated by a PC or other controlling device (host). A number of sources can be synchronized and operated together to form a poly-phase system. The communication protocol is provided to control output settings as well as to access all internal registers. The VIS Voltage Integrated Source is accommodated in a 19 inch plug-in case. VIS-400 Technology of the power stage Output voltage range (Phase-Neutral) VIS-1200 VIS-2600 PWM with digital feedback loop * 30 ÷ 350 V * 400 VA Output power for linear loads Output voltage stability 1200 VA 2600 VA << 0.005% (integration time 150 s) Total Harmonic Distortion (THD) < 0.3% > 85% Efficiency of the power stage * Frequency of the fundamental component ** 45 Hz ÷ 65 Hz Phase angle 0° ÷ 360° Harmonics user programmable isolated RS422/RS232 Control Dimensions (H x W x D) 170 x 440 x 600 mm 300x440x600mm Dimensions (H x W x D) with front panel and rear connectors 174 x 484 x 750 mm 307x484x750mm *) other values available on request for poly phase systems **) MeterTest MeterTest Ltd., Armii Krajowej 7, 58-100 Swidnica, POLAND www.meter-test-equipment.com Phone/Fax: +48 74 856 63 92, E-mail: [email protected] www.metertest.eu Having in mind the care about continuous improvement of the product operational qualities, the producer reserves the right to introduce possible modifications in the construction and workmanship. That is why some of the dimensions, drawings, parameters or descriptions may differ from these shown in this catalogue. Doc #3202.042.004-EN