Network choke (inlet) 4%, 3-phase for power up to 37 kW INS 3-75-400

Limitation of inrush and harmonic currents

Network chokes, also known as input chokes, are components used to limit inrush currents when switching on receivers with induction motors or transformers. In the case of the INS 3-75-400 choke, we are talking about limiting the current by 4%, which translates to smoother switching and reduced load on the power supply network. This is particularly important in installations with limited connection power.

This choke is designed to operate in three-phase systems and can be used in circuits with a power of up to 37 kW. This means it will find application in workshops, production halls, as well as in commercial buildings with higher energy demand. Installers will appreciate its solid construction and ease of installation, and end users – more stable operation of devices and a lower risk of problems with the electrical network.

Construction and application

The INS 3-75-400 choke uses an inductive coil to suppress voltage surges and inrush currents. Using the choke allows for:

• Limitation of inrush currents: Reduces network load during the start-up of motors and other inductive receivers.
• Reduction of harmonic distortions: Improves the quality of electrical energy in the installation.
• Device protection: Extends the life of connected receivers by reducing electrical stress.
• Voltage stabilization: Provides a more stable power supply voltage for connected devices.

The choke installation is relatively simple and does not require specialized tools – just connect it in series in the power circuit of the receiver. However, it is important to select the choke correctly to the power of the receiver and the parameters of the power supply network. This will ensure optimal protection and efficiency of the electrical installation.