A simple, robust, and economical starting resistor.

Delivered in IP23 enclosures, the starting resistors are calculated for each application and then manufactured in our workshops from stainless steel.

The result: starting resistors that provide identical starts, faithfully accompanying even the harshest processes | vibrations, humidity, corrosive atmosphere, heat, cold, dust, etc.

The boxes are sized for a certain number of starts and a certain timing period, and are protected in case these limits are exceeded.

Benefits

• Initial power supply to the motor at reduced voltage
• Takeoff torque adjustment
• Smooth ramp-up
• Economical
• Ideal for machines with increasing torque
• Maintenance-free

Principle

Most stator starts are performed in one step (with resistors in series, then switching the power supply directly to the motor).
A stator resistor start provides faster and more efficient torque growth than a star/delta start.
Initially, the resistors, in series with the motor, absorb and dissipate a fraction of the voltage: the motor is powered by a reduced voltage. Then, the starting torque decreases, so the voltage absorbed by the resistors drops and the voltage across the motor terminals increases. This natural action ensures a fast start that is gentle on the equipment. Once the optimal threshold is reached, the resistors are short-circuited and the motor is powered directly. The motor is always connected to the mains and does not experience any jolts.

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