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G3VM-352J Application Field and Working Principle (Solid State Relays)

G3VM-352J is a type of solid state relay. A solid state relay (SSR) is an electronic switching device with no moving parts, making it highly reliable and erosion-proof. It uses a variety of semi-conductor components, such as optocouplers, triacs, IGBTs, and MOSFETs, to switch on or off the controlled loads. G3VM-352J is specially designed for motor control, home appliances, and lighting.

Application Field

G3VM-352J has a wide range of applications. Its main application is to control motor speed, especially in a variety of motor-driven applications such as fans, pumps, conveyors, and machine-tools. It can also be used to control and protect heavy-duty loads, home appliances, and lighting. In addition, it can be applied to microprocessor-based control systems, such as industrial automation systems including batch control, continuous process control, and electronic instrumentation control.

Working Principle

G3VM-352J is a low capacity SSR which works with AC or DC loads. At the input side, G3VM-352J is equipped with a Zener diode and a triac. The Zener diode provides a voltage reference that allows the triac to be triggered on and off through a DC control signal. Once the DC control signal is applied, the triac will be triggered and provide a low-voltage, high current across the AC load.

The output of the G3VM-352J is an optically isolated triac output which provides isolation from high voltage AC and also helps to reduce the effect of electrical noise. At the output side, the contact leads of G3VM-352J are equipped with an optically isolated TRIAC, which acts as a switch, controlling current through the load. With this contact closed, there is no current flow until a DC trigger voltage is applied. The DC trigger voltage is supplied by a microcontroller or other controlling device. When the DC trigger voltage is removed, the contact opens. This operation provides ON/OFF, reverse, or speed control.

In addition, the G3VM-352J relay has a built-in overcurrent and overtemperature protection system. This system is designed to provide protection against any unintentional overcurrent and/or overheat scenarios that could otherwise damage the relay and the connected load. The relay also has a built-in timer to detect any delayed-on or delayed-off situations. This helps to prevent any unintentional restarts of the load after an overload or overtemperature condition.

In conclusion, G3VM-352J is a very useful solid state relay for controlling various high power applications. It is highly reliable, erosion-proof, and has a wide range of applications. It is suitable for motor control, home appliances, lighting, and microprocessor-based control systems. Furthermore, it is equipped with a built-in overcurrent and overtemperature protection system and a built-in timer circuit, which provides additional protection and control over the load.

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