AC Power Source

Manufacturer's part number :


Manufacturer Sefram


Description :

The 1657 is an AC power source that provides high conversion efficiency and low distortion output. A built-in PFC provides an input power factor of 0.99 at full load. The AC source supplies up to 1500 VA through its universal line output terminal and can operate in one of two voltage ranges, 135 V or 270 V, with 0.1 V resolution. The bright display constantly monitors the output voltage, current, power and frequency and also indicates the selected range and mode of operation. The front panel interface is easy-to-use and includes a control knob for quick setting of voltage and frequency parameters. The 1657 can also be controlled remotely via RS232 interface. This 1500 VA rated AC power source is ideally suited for industrial product testing applications where power conversion or performance verifications is needed. The 19 inch rack-mountable design with front to rear airflow ventilation, allows for a compact form factor in automated test environments.

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Technical Data :

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  • Low distortion sine-wave output with programmable frequency and voltage
  • Two selectable output voltage ranges of 135 VAC or 270 VAC
  • Output frequency adjustable from 45 Hz to 450 Hz in 0.01 Hz steps
  • 0.1 V settable resolution
  • Automatic protection against overload, short circuit, and over temperature
  • Output ON/OFF switch
  • Bright VFD display
  • Remote programming through RS232 serial interface
  • Input power factor of 0.99 allows for maximum power to be delivered from the AC outlet
  • Standard 19 inch rack construction
  • Conforms to EN55022, class A, safety standard EN60950