Network choke (inlet) 4%, 3-phase for power up to 11 kW INS 3-24-400

Three-phase line choke – power protection and stabilization

The INS 3-24-400 line choke is a component designed to reduce overvoltages and harmonics in the power supply networks of electrical devices. Its main task is to limit inrush currents when starting motors and other high-power consumers, which translates to increased reliability and lifespan of the electrical installation. This device finds application in both industrial installations and commercial and public buildings.

Construction and characteristics

The INS 3-24-400 choke is designed to operate in three-phase networks with a rated voltage of 3x400V and a power of up to 11 kW. It has a winding made of copper, which ensures high conductivity and efficiency. Vacuum impregnation in class H varnish guarantees resistance to high temperatures and humidity, as well as long-term stability of parameters. The voltage drop on the choke is 4%, which allows minimizing energy losses and maintaining a stable supply voltage.

The choke's construction is based on a core made of high-quality magnetic materials, which ensures effective harmonic suppression and reduction of disturbances in the network. The choke's execution meets the requirements of EN/IEC 61558-2-20 and EN/IEC 60076-6 standards, which confirms its safety and compliance with applicable standards. The choke has a protection degree of IP00, which means there is no protection against the ingress of solids and liquids – therefore, installation in dry and well-ventilated rooms is recommended.

Key advantages

• Limitation of inrush currents: Reduces the load on the power supply network during device start-up, protecting them from damage.
• Harmonic reduction: Improves the quality of electrical energy by suppressing harmonic disturbances, which affects the stable operation of devices.
• High reliability: Construction from high-quality materials and winding impregnation ensure long-term and trouble-free operation.
• Compliance with standards: Meeting European (EN/IEC) standards guarantees safety of use and compliance with regulations.
• Energy efficiency: A voltage drop of 4% minimizes energy losses in the power supply network.
• Solid construction: Durable construction provides resistance to environmental conditions and mechanical damage.
• Transparency of parameters: Allows selection of the appropriate choke for specific electrical installation needs.