AC power supplies provide outputs that typically have adjustable current, voltage, and frequency ranges. They are used to test motors and many other types of electrical equipment, and their input values may vary. The output frequency of an AC power supply can typically reach the kilohertz range. An AC power supply can be bench-top, DIN rail, rack mount, or cabinet type. The nominal AC input of an AC power supply can be 220VAC, 380VAC, or 220/380VAC optional.

AC power supplies provide outputs that typically have adjustable current, voltage, and frequency ranges. They are used to test motors and many other types of electrical equipment, and their input values may vary. The output frequency of an AC power supply can typically reach the kilohertz range. An AC power supply can be bench-top, DIN rail, rack mount, or cabinet type. The nominal AC input of an AC power supply can be 220VAC, 380VAC, or 220/380VAC optional.

Output Specifications

Important output specifications to consider for AC power supplies include minimum frequency, maximum frequency, maximum voltage, maximum steady-state current, and maximum power output. The minimum frequency is the lower limit of the adjustable frequency range, the maximum frequency is the upper limit of the adjustable frequency range, the maximum voltage is the upper limit of the adjustable voltage range (RMS), the maximum steady-state current is the maximum rated sustainable current, which does not include the peak value, and the maximum output power is the total nominal output power of the power supply or power supply.

Output Selection

Output options for AC power supplies include adjustable frequency, adjustable voltage, adjustable current, DC output, three-phase output, and soft start. The output frequency, voltage, and current can be adjusted through a continuous range or discrete values. Power supplies with DC output are able to provide DC output. Three-phase AC contains three sine waves with a phase angle of 120°. Soft start output is the output gradually rising to a set level. These types of sources are often used for motor testing.

Protection Functions

Common protection functions of AC power supplies include over-voltage protection, over-current protection, overheating protection, and short-circuit protection. Some power supplies contain circuits to protect the device in the event of over-voltage, over-current, overheating, or short circuit, supporting more customized requirements.

User Interface Selection

 The user interface selection for AC power supplies includes local interface options, computer interface, computer interface options, and application software. The display type can be an analog meter or indicator, a digital readout, or a video display terminal. An important environmental parameter to consider when searching for an AC power supply is the operating temperature.

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