What are Starting Resistors?

Starting resistors are devices designed to limit the initial current in electric motors at start-up, avoiding current peaks that can damage the system or reduce component life. When a motor starts, it needs a high energy flow to overcome inertia and start turning, which can lead to excessive consumption and premature wear. They are essential for the control and protection of electric motors in large-scale energy and industrial infrastructures.
Its main function is to limit the starting current, reducing voltage peaks and avoiding unnecessary stress on the system. This allows a progressive and safe start-up, optimizing the equipment’s operability and extending its useful life.

Why do large industries need to have starting resistors?

In large energy infrastructures, where energy demand is high and constant, having a solution that guarantees a progressive and efficient start-up is essential for the safety and performance of the equipment.

These starting resistors work by limiting the initial current and reducing the mechanical stress on the motor, preventing overheating and reducing premature wear of components. Their application is essential in industries with large motors, such as power generation plants, pumping systems, mining and heavy manufacturing, where a bad start can generate costly failures and interruptions in operation.

In industrial systems, these resistors work in conjunction with three-phase motors and variable voltage drives, reducing the initial current at start-up and avoiding peaks that could affect performance or damage components. Once the motor reaches its rated speed, the resistors are automatically disconnected, allowing the system to operate with total stability.

Torivac is a company specialized in the design and manufacture of toroidal transformers and voltage regulators.

We have nearly 60 years of experience in the industry, which has allowed us to grow to a presence in more than 30 countries.
We have a technical team that guarantees the manufacture of high precision and efficient devices. Our work methodology allows us to perform advanced simulations in each phase of each project, ensuring that each component, from toroidal voltage variators, adjustable transformers, battery dischargers, potentiometers and toroidal cores, meet the highest standards in the industry.
We work closely with companies that have a large infrastructure, seeking to ensure customized and efficient solutions. We aim to respond to the demands of industries such as technology, energy and automotive. Our goal is to continue innovating, strengthening strategic alliances and expanding our global reach, always maintaining the seal of quality and excellence that has characterized us since our beginnings.