Softstarter DS7, 100 A, Uc=24 V AC/DC DS7-340SX100N0-N 134920

Softstarter DS7 – smooth motor starting, protection and efficiency

Softstarter DS7 is an advanced device designed for smooth starting and stopping of induction motors. Using a soft starter minimizes current and mechanical shocks during start-up, which translates to extended motor life and related installation components. The device is particularly useful in applications requiring limitation of the load on the power supply network, such as pumps, fans, conveyors or compressors. The DS7-340SX100N0-N model with a rated current of 100A is dedicated to motors with a power of up to 55 kW at 400V.

Design and functionality

Softstarter DS7 uses thyristors to control the reduction of the motor supply voltage during the start-up phase. A built-in bypass contactor ensures lossless motor operation after the start-up process is completed, eliminating the risk of thyristor overheating. The device operates at AC/DC 24V, which ensures wide compatibility with various control systems. The IP20 protection class guarantees protection against accidental contact, and the compact design facilitates mounting in existing electrical cabinets.

Applications and benefits

• Reduction of inrush currents: Limiting starting currents reduces the load on the power supply network and minimizes the risk of overvoltage.
• Extended service life: Smooth starting reduces mechanical stress in the motor and gearboxes, which translates to a longer service life of these components.
• Motor protection: Protects the motor against overloads and short circuits – although it does not have a built-in overload protection, it works with external protection systems.
• Versatility: Can be used in a wide range of industrial and commercial applications.
• Simple installation: Compact dimensions and an intuitive connection diagram facilitate device installation.
• Wide range of supply voltages: Operation in the range of 230…480 V AC allows for use in various electrical installations.
• Compliance with standards: The device meets the requirements of EN 50110-1/-2 (VDE 0105 part 100) standards, ensuring safe use.

Softstarter DS7 is a reliable solution for installers and users looking for an effective way to optimize the operation of electric motors and increase the safety and reliability of installations.