XAA117STR

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Solid State Relays (SSRs) are a type of electronic switch designed to control a current using optical isolator technology. They are used in place of electro-mechanical relays due to their reliability, small size and high switching frequency. SSRs can be used in applications where temperature, pressure, current and high voltage are present, and are particularly useful for switching low power signals. XAA117STR is one type of such SSRs.

The XAA117STR is a digital 3-phase AC SSR that is used to control AC/DC Solid State Relays (SSRs) with a single-output in the range of 11 to 32 VDC and 4 A with a maximum switching frequency of 500 kHz. It has an adjustable output frequency of up to 30 Hz, and has a fast, accurate and reliable response time when switching. The XAA117STR is designed for three-phase AC load switching, and is suitable for usage in three-phase motor control, temperature control, power control and automotive applications.

The working principle behind XAA117STR lies in its ability to convert a DC electric power input into a three-phase alternating current. It has a three-phase bridge module for rectification and transforming the input voltage. It produces an output signal that can be adjusted to control the AC/DC SSR as required. It is designed with a current sensing resistor to ensure output current is stable and not exceeding the rated limit. This component helps protect against overcurrent and overload conditions.

The XAA117STR also features built-in LED display to provide visual indication of the state of the system, and fault diagnosis. It also includes self-locking circuit to avoid accidental switching, and a timer adjustment mechanism to set the switch on/off time accurately. Additionally, it is designed with an interruption circuit to prevent the system from being overloaded and ensure the performance of SSR can reach its full capacity.

In summary, the XAA117STR is a reliable and efficient digital 3-phase AC SSR for protecting numerous applications from current, temperature and pressure overloads. It is equipped with a fast response time and has a maximum switching frequency of 500 kHz. The wide range of features makes it a great choice for motor control, temperature control, power control and automotive applications. It is best suited for small to medium sized power systems, and can easily be integrated into most systems without any additional components.

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