Electric motor soft starter devices
Soft-start devices will ensure shock-free start and stop of any electric drive
SCP or softstarters are used to smoothly start or stop almost any mechanism, with almost any start–up modes - electric motors, pumps, crushers, mills and compressor equipment.
In addition to the fact that they can greatly reduce the load on the network and on the electric drives of equipment during acceleration and braking, they also increase the service life, while providing full protection of the electric motor, pump or other equipment from emergency situations.
SCP is used in the operation of the following equipment:
- conveyors and conveyors;
- pumps;
- fans;
- compressor equipment;
- cranes;
- belt mechanisms.
The smooth start of the pump is carried out by gradually starting the electric motor of the pumping mechanism at a set pace. As a result, the hydraulic shock in the pipeline is mitigated, the value of the inrush current is reduced, possible breakdowns are prevented and the service life of pumping units is extended.
Smooth start ensures compliance with the main indicators:
- smooth change of voltage and current values;
- control of starting current, torque;
- conducting frequent launches without changing the behavior in the system;
- smooth shutdown in pump and conveyor systems;
When using soft-start devices in conjunction with electric motors as part of various equipment, it is possible to significantly reduce operating and other costs closely related to equipment maintenance and repair, and ensure maximum energy savings.
The main functions of the SCP:
| Smooth start | It is used to limit the starting torque or ensure smooth start, braking of electric motors. They are used to improve the starting characteristics of electric motors and eliminate the occurrence of mechanical shocks, minimize equipment repair costs and reduce equipment downtime. |
| Protection | Electronic protection of working mechanisms and the electric motor from overloads and malfunctions in the power circuit. |
| Reduced speed | Pseudo-frequency regulation or switching the electric motor to a reduced speed. It is used for debugging mechanisms or for precise installation of drive mechanisms in the required position before or after work |
| Braking | The intensive braking function of the drive is especially necessary in systems where an active load is used – lifts, inclined conveyors, etc. |
| Shift start | It is used in mechanisms that require a high starting moment at the beginning of the start. Therefore, at this moment, the maximum mains voltage is applied (for a fraction of a second) and the mechanism shifts from place. In the future, the acceleration of the mechanism takes place in the usual mode. |
Advantages of using SCP:
- full control over engine overloads;
- elimination of jerks, hydraulic shocks in drive mechanisms and pipelines;
- control of electric motor stops at a specified time;
- maximum performance in an emergency situation;
- high reliability;
- no overvoltage;
- increased work life;
- contactless and silent switching;
- economical energy consumption.
When selecting a soft-start device, it is necessary first to pay special attention to the technical data specified in the electric motor passport, take into account its characteristics such as the frequency of starts and the type of load, and it is also necessary to take into account the initial parameters in specific application tasks.
In the Salutech company, you can buy SCPs designed to work with electric motors with a wide range of rated current.
To buy a soft starter device, it is enough to select a model on the website and send an order form.
If you need technical assistance, please contact our consultants. We will select a smooth start device taking into account your requirements and the characteristics of the electric drive of the pump or other element of the technological equipment!