IRKH162/12

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Thyristors, also known as Silicon Controlled Rectifiers (SCRs), are a type of semiconductor that can be used to control a large amount of power. These devices are used in a variety of applications such as motor control, lighting control, and power regulation. In addition to these uses, they can also be used to form integrated circuit (IC) modules of various configurations. An example of such a module is the IRKH162/12, which is a Compact Module Thyristor normally used in the control of motor drives.

IRKH162/12 Application Field

The IRKH162/12 is a four-terminal, three-phase bridge circuit composed of two series-connected Thyristors. It is designed primarily for use as a solid-state relay or contactor in motor drive applications, such as in the control of motors, pumps, and cooling towers. Its small size and light weight allow it to be used in the most space-constrained industrial applications. Additionally, its ability to switch high power and inrush currents makes it well-suited for use in controlling large loads.

IRKH162/12 Working Principle

The working principle of the IRKH162/12 is based on the conduction of electrical current through the Thyristors. When any three of the four terminals are connected to a voltage source, a current is allowed to flow through the rest of the module, activating the Thyristors. This current can then be used to control the motor drive, as the amount of current that flows through the module can be adjusted by changing the voltage applied to the terminals.

The module is also capable of inrush current protection, which prevents excess current from damaging the module. This is accomplished by inserting a thyristor into series with each of the three legs, so that when a fault occurs, only one Thyristor will be activated and the other two will remain off. This ensures that the module will only be exposed to a limited amount of power, so that it can last longer and provide better protection for the electrical device it is controlling.

The IRKH162/12 is also designed with a built-in overcurrent protection feature, which works to protect the module from dangerous overloads and short circuits. The module is equipped with a thermal trip point, which triggers when it is subjected to an overload. This helps to prevent the module from being damaged and also allows the motor it is controlling to be safely turned off in emergency situations.

Conclusion

The IRKH162/12 is a compact module thyristor designed for use in motor drive applications. It is capable of controlling large amounts of power, making it suitable for use in industrial environments. Additionally, its inrush current protection and over current protection features give it extra protection from damage, allowing it to last longer and provide better protection for the device it is controlling.

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