MVD-257

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MVD-257 is a three-phase motor protective and control device that provides comprehensive protection functions to the three-phase motor, such as overload, phase loss, temperature, leakage, over-temperature current and short-circuit protection. The MVD-257 device is truly an intelligent device that applies advanced technologies of power control, thermal relay, over-current relay, short-circuit protection, and other parameters protection.

Application Field

The MVD-257 device is typically used in many industrial applications, including oil and gas, paper-making, HVAC systems, steel mills, and other high power motor driven systems. This device can also be applied in 3-phase motor control and protection in the range of up to 100A. It can also be used in the protection of electric aircrafts, elevators, battery chargers, and in the protection of general equipment.

Working Principles

The MVD-257 consists of two main components, the power control and the thermal relay. The power control element is responsible for monitoring the amount of current that flows through the motor in order to ensure safe operation. If it detects any sudden changes in the current, it will immediately shut down the motor and protect it. The thermal relay, on the other hand, monitors the temperature of the motor in order to protect it from any overheating. If it detects that the motor is getting too hot, it will immediately shut down the motor and protect it from any further damage.

The MVD-257 also features advanced protection functions such as Phase Loss, Over temperature and Under Voltage. According to the user’s manual, the device will monitor and detect any sudden changes in the load current, and when it detects any warning or overloading, it will immediately disconnect the motor from the power supply. Additionally, the device also monitors the ambient temperature to make sure it does not exceed the safe operating limits. The device also has short-circuit protection, which instantly shuts down the motor in the event of any short-circuit.

Another important feature of the MVD-257 is its configurable adjustable setpoints. It gives users the ability to adapt the protection settings based on their specific application requirements. For example, the user can adjust the current threshold setpoints, temperature setpoints, time delay settings, and other parameters. This ensures that the device is able to adequately protect the motor from any harm and effectively provide reliable operation.

Conclusion

MVD-257 provides a robust and reliable solution for 3-phase motor control and protection. This device is able to accurately detect any sudden changes in the load current, temperature, and other parameters and will immediately shut down the motor in order to protect it from any harm. Additionally, users are able to customize the protection settings based on their own specific application needs. All these features make MVD-257 a superior device that offers superior protection and reliable operation.

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