FS3H012NG

FS3H012NG Application Field and Working Principle

FS3H012NG is a three-phase thyristor-silicon controlled rectifier (SCR) with a rated current of 12A and an operating voltage of 800V. It contains three elements including anode, cathode, gate. It can be widely used as a bridge in the electric power industry, such as AC power supply, rectifying circuits, dimmers for lighting, motor speed controllers and heat control. The FS3H012NG also has fault detection function for short circuit and phase loss protection.

Applications of the FS3H012NG

The FS3H012NG is mainly used in three-phase thyristor AC drives, UPSs, DC motor speed controls, AC motor speed controls, reactors, resistors, rectifiers, and heating/cooling controllers. It provides a high surge current capability and very fast response. It can be used in construction and industrial automation, small-scale and large-scale power control applications.

Working Principle of the FS3H012NG

The FS3H012NG thyristor utilizes a three-phase bridge configuration that allows for full or half cycle on or off control of a three-phase AC voltage. Each thyristor acts as a switch connected in series with the anode. When the thyristor is turned on, an electric current flows from the anode to the cathode. The gate terminal is opened and closed to control the on/off state of the thyristor. The gate terminal can be driven by a DC voltage source or with an AC voltage source

The current flow of the thyristor is determined by the magnitude of the anode current. The current flow of the thyristor is independent of the direction of the anode current. When the anode current reaches a certain level, the thyristor will conduct. The direction of the current can be reversed by switching the connections of the anode and the cathode. This can be done either manually or by using a switching circuit.

The fs3h012ng must be turned off in a safe way. This process is called turn-off. In order to turn off the fs3h012ng safely, the thyristor must be over-voltaged by the gate signal voltage, which will turn off the thyristor quickly. This over-voltaging ensures safe turn-off of the thyristor without damaging it.

Conclusion

The FS3H012NG is a three-phase thyristor that is widely used in electric power and industrial automation applications. It provides high surge current capability and fast response. The FS3H012NG utilizes an anode, cathode, and gate terminal. The gate terminal is opened and closed to control the on/off state of the thyristor. The fs3h012ng must be turned off in a safe manner, by over-voltaging the thyristor using the gate signal voltage. This enables safe and efficient operation of the FS3H012NG.