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Senkuo GE300 Series Intelligent Online Soft Starter
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Product Overview
The online soft starter produced by our company is a motor start control device that combines advanced technology and reliable performance. Designed for modern industrial production and various motor drive scenarios, it effectively reduces the impact on the power grid and mechanical equipment during startup by smoothly controlling the motor’s starting current, providing a safe, stable, and efficient startup solution for motors. Whether it’s motor applications in industrial manufacturing, construction projects, or commercial facilities, this soft starter plays a key role in improving equipment operational stability and extending equipment service life.
Safe and Reliable
Equipped with 24 protection functions including overvoltage / undervoltage / overheating / overload / phase loss, ensuring electrical safety
High Reliability
Uses high-quality electronic components and advanced manufacturing processes, undergoes strict quality inspection, ensuring long-term stable operation in harsh environments.
Compact Design
Small size, compact structure, easy installation, saves control cabinet space, convenient for integration into various electrical control systems.
Easy Operation
Equipped with an intuitive human-machine interface, users can easily set parameters and monitor operating status through buttons or touch screen. At the same time, the soft starter has self-diagnostic function, which can quickly and accurately display fault information, facilitating maintenance personnel to conduct fault排查 and processing.
Strong Compatibility
Can be used with various types of motors, including asynchronous motors, synchronous motors, etc., with wide adaptability.
Beautiful and Elegant
Adopts modern design, beautiful appearance, suitable for various installation environments
Product Structure
Online soft starter has intelligent control functions, supports multiple communication interfaces (such as RS485, Modbus, etc.), can be easily connected with PLC, DCS and other control systems to achieve remote monitoring and control. Users can real-time monitor motor operation parameters and status through upper computer, perform remote operation and fault diagnosis, improving the system's automation level and management efficiency.
- Reduce impact current: Online soft starter can make the motor current rise with a smooth curve during startup, avoiding the impact current up to several times or even more than ten times the rated current produced by traditional startup methods (such as direct startup). This not only reduces the impact on the power grid, reduces voltage drop caused by excessive startup current, protects the normal operation of other equipment under the same power grid, but also extends the service life of motors and related equipment.
- Reduce mechanical stress: During startup, the soft starter can gradually increase the motor's torque, avoiding mechanical impact caused by the motor instantly bearing excessive torque under traditional startup methods, reducing wear of transmission systems (such as belts, gears, etc.), reducing equipment maintenance and component replacement costs, improving equipment reliability and stability.
- Precise control: With multiple startup modes, such as voltage ramp startup, current limit startup, etc., users can flexibly choose according to different load characteristics and working condition requirements. At the same time, the soft starter can precisely adjust startup time, current limit multiple and other parameters to achieve precise control of the motor startup process
- Soft stop function: In addition to soft start, online soft starter also has soft stop function. It can make the motor gradually reduce speed during stopping, avoiding water hammer effect (for fluid loads such as water pumps) or mechanical impact caused by the motor suddenly stopping under traditional stopping methods, protecting equipment and pipeline systems, extending equipment service life.
Working Principle
- Voltage Regulation Principle
Online soft starter usually uses thyristor (SCR) as power control element. Thyristor has the characteristic of controlling its conduction angle. By changing the conduction angle of thyristor, the voltage applied to the motor can be adjusted. During startup, the soft starter will gradually increase the output voltage, so that the motor starts from a lower voltage, avoiding high voltage impact during direct startup. - Current Limiting Principle
The soft starter realizes current limiting function by monitoring the motor current. During startup, it will limit the motor startup current within a set range. When the current exceeds the set value, the soft starter will automatically adjust the conduction angle of the thyristor, reduce the output voltage, thereby reducing the current. As the motor speed increases, the motor’s back electromotive force gradually increases, the current will gradually decrease, and the soft starter will correspondingly gradually increase the output voltage, making the motor finally reach rated voltage and rated speed operation. - Control Principle
There is a control circuit inside the soft starter, which can control the conduction angle of the thyristor according to preset parameters and motor operation status. The control circuit usually uses microprocessor or dedicated control chip, through processing and analyzing signals collected by various sensors, to realize precise control of the motor startup process. For example, according to factors such as motor load condition, power supply voltage, automatically adjust startup time, current limit value and other parameters to ensure that the motor can start smoothly and reliably.
Through the above working principles, online soft starter can realize soft start of motor, reduce current impact and mechanical impact during startup, extend the service life of motor and related equipment, and also reduce the impact on the power grid.
Application Fields
- Industrial Manufacturing: Widely used in the motor startup control of various industrial equipment such as fans, pumps, compressors, mixers, conveyor belts. In chemical, steel, cement, paper and other industries, intelligent bypass soft starters can effectively cope with complex load conditions, ensuring stable operation of production equipment.
- Construction Field: Used for motor startup of building water supply and drainage systems, ventilation and air conditioning systems, elevators and other equipment. Its low current startup characteristic can reduce the impact on the building power grid, ensure the stability of power supply, and reduce equipment maintenance costs.
- Municipal Engineering: In municipal facilities such as urban sewage treatment plants, waterworks, pumping stations, intelligent bypass soft starters can realize smooth startup of large water pump motors, improve the operational reliability and efficiency of municipal facilities, and ensure the normal operation of the city.
- Mining Industry: Suitable for the startup of mining equipment, ventilation equipment, hoisting equipment and other motors. Facing the harsh working environment and heavy load startup requirements of mines, the protection functions and precise control capabilities of soft starters play an important role, improving the safety and operational stability of mining equipment.
GE300 Series Soft Starter Peripheral Accessories Specification Parameter Table
| Soft Starter Model | Rated Power (kW) | Rated Current (A) | Circuit Breaker (MCCB)(A) | Bypass Contactor Model (KM) | Primary Line Specification (mm²) |
|---|---|---|---|---|---|
| GE300-005 | 5.5 | 11 | 32 | CJ20-16 | Copper cable 2.5 |
| GE300-007 | 7.5 | 15 | 40 | CJ20-16 | Copper cable 4 |
| GE300-011 | 11 | 23 | 63 | CJ20-25 | Copper cable 6 |
| GE300-015 | 15 | 30 | 63 | CJ20-40 | Copper cable 10 |
| GE300-018 | 18.5 | 37 | 100 | CJ20-40 | Copper cable 10 |
| GE300-022 | 22 | 45 | 100 | CJ20-63 | Copper cable 16 |
| GE300-030 | 30 | 60 | 100 | CJ20-63 | Copper cable 25 |
| GE300-037 | 37 | 75 | 100 | CJ20-100 | Copper cable 35 |
| GE300-045 | 45 | 90 | 100 | CJ20-100 | Copper cable 35 |
| GE300-055 | 55 | 110 | 160 | CJ20-160 | Copper cable 35 |
| GE300-075 | 75 | 150 | 250 | CJ20-160 | Copper 35/Aluminum 50 |
| GE300-090 | 90 | 180 | 250 | CJ20-250 | Copper 50/Aluminum 70 |
| GE300-110 | 110 | 230 | 350 | CJ20-250 | Copper 70/Aluminum 95 |
| GE300-132 | 132 | 260 | 400 | CJ20-400 | Copper 95/Aluminum 120 |
| GE300-160 | 160 | 320 | 400 | CJ20-400 | Copper 95/Aluminum 150 |
| GE300-185 | 185 | 370 | 400 | CJ20-400 | Copper 120/Aluminum 185 |
| GE300-200 | 200 | 400 | 400 | CJ20-400 | Copper 150/Aluminum 185 |
| GE300-250 | 250 | 500 | 630 | CJ20-630 | Copper 185/Aluminum 240 |
| GE300-280 | 280 | 560 | 630 | CJ20-630 | Copper 240/Aluminum 300 |
| GE300-320 | 320 | 640 | 630 | CJ20-630 | Copper 240/Aluminum 400 |
Note:
- Online soft starter does not require external AC contactor
- In the primary line specification, “copper cable” is abbreviated as “copper”, and aluminum cable specifications are marked separately.
- MCCB is the distribution circuit breaker specification, and the bypass contactor should match the soft starter model.
This product can be used with various low-voltage power distribution equipment, such as low-voltage distribution cabinets and GCK low-voltage drawer cabinets, to build a complete power distribution and motor control system. For applications requiring precise speed control, it can also be used with low-voltage frequency inverters or vector variable frequency drives to achieve more efficient motor drive control.
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