Xi'an Simo Electric Machinery GroupSpecializing in the production of high-voltage large motors, DC motors, inverter motors...
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Low voltage solid state soft start cabinet

Low voltage solid state soft start cabinet

Low-voltage solid-state soft starter cabinets are high-performance starting control devices for low-voltage motors. Utilizing semiconductor components, they enable smooth motor starts, reduce inrush current surges, and provide controllable shutdown and speed regulation capabilities. Featuring a compact design, stable performance, and rapid response, these units are widely applied in low-voltage motor systems such as pumps, fans, compressors, and industrial production lines.

The cabinet incorporates high-quality electrical components and an intelligent control system, featuring multi-stage soft start, overload protection, and fault alarm functions. These capabilities effectively extend motor lifespan, reduce mechanical wear, and enhance equipment operational efficiency. With its user-friendly operation and convenient maintenance, it is ideal for energy-saving retrofits and control upgrades of various low-voltage motors in industrial settings.

  • Solid-state soft start, smooth start-stop operation, reduces mechanical impact

  • Low starting current reduces grid impact

  • Multi-stage soft start and controlled shutdown function

  • Enhanced protection system, fault alarm, reliable operation

  • Suitable for pumps, fans, compressors, and industrial production lines

Widely used in: industrial plant pump stations, fan systems, compressors, and various low-voltage motor equipment drive applications.

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Low-voltage solid-state softstarter cabinetComplete Solution for Intelligent Motor Starting and Control

I. Product Overview: Revolutionary Breakthrough in Motor Starting Technology

Low voltage solid state soft start cabinetis a type ofAdvanced Power Electronics TechnologyIntelligent Microprocessor Control SystemMotor starting equipment, specifically designed forthree-phase asynchronous motorDesignIt achieves this throughThyristor (Silicon Controlled Rectifier) Phase-Shift ControlThe principle enables precise regulation of motor voltage and current, completely resolving issues caused by traditional direct-on-line starting, Y-Δ starting, and autotransformer voltage-reduction starting methods.Significant grid impact, high mechanical stress, and severe energy wasteetc.

Low voltage solid state soft start cabinet
Low voltage solid state soft start cabinet

This product has been widely adopted in power generation, metallurgy, mining, chemical processing, construction, water treatment, and other fields, becoming a key component in motor control for modern industrial automation projects.Simo motorsLow-voltage solid-state soft starter cabinet integratesDigital Integration TechnologyIntelligent Diagnostic ProtectionFunctionality, not only equipped withSoft start, soft stop, real-time monitoringCore capabilities, and also integratesMultiple Motor ProtectionThe mechanism provides users with a complete and reliable motor control and protection solution.

II. Core Technology Principles and Structural Design

1. Principles of Intelligent Control

Low-voltage solid-state soft starter cabinetHigh-performance microprocessor (CPU) As the core control unit, throughOptical Fiber Isolation Triggering TechnologyPrecise control of the conduction angle of series-parallel thyristor assembliesDuring the motor start-up process, the system automatically and gradually increases the terminal voltage and torque of the motor to achieveConstant current start, voltage ramp startMultiple flexible start modesWhen the motor approaches its rated speed, the bypass contactor automatically engages to ensure the motor operates efficiently at full voltage.

Its technical principle is based onThyristor Phase-Shift ControlBy controlling the variation of the trigger angle through a microprocessor, the conduction level of the thyristor is adjusted, thereby altering the magnitude of the motor's input voltage to achieve the purpose of soft starting the motor.This precise control ensures a smooth motor start-up process, minimizing impact on the power supply system and mechanical equipment.

2. Precision Structural Design and Safety Features

  • Modular Component DesignIncludes thyristor modules, motor protection modules, communication modules, and control transformers, supporting rapid maintenance and customizable expansion.
  • Three-room isolation structureThe design employs mutually independent power component compartments, main control relay compartments, and main circuit connection compartments, effectively isolating high-voltage, low-voltage, and control circuits to enhance the system's interference resistance.
  • Multi-layered protection mechanism: IntegrationRC Absorption UnitStatic and Dynamic Equalization TechnologyProvides surge voltage absorption and overload protection (125% continuous rating, 500%/60s overload capacity)
  • Optimized thermal designFor units rated at 75 kW and below, natural air cooling is employed; for units rated at 90 kW and above, forced air cooling is utilized. This ensures stable operation of the equipment under all operating conditions.

III. Core Functions and Technical Advantages

1. Diverse Start-Up and Shutdown Modes

  • Current-Limiting Soft StartLimit the inrush current to the rated value.100%-500%Avoid sudden voltage drops in the power grid, reduce distribution capacity, and prevent additional investment in capacity expansion.
  • Voltage Ramp ControlInitial torque adjustable (30%-90%Rated voltage), smoothly increases motor speed, suitable for various types of loads.
  • Pulse conflict jump startSuitable for scenarios with high mechanical static friction in motor-driven loads, providing an initial surge torque to overcome static friction.
  • Soft Stop FunctionBy gradually reducing the voltage to eliminate the load on pump-type equipment."Water hammer effect"Protect the pipeline system; soft shutdown time can be0–60 secondsInternal adjustment

2. Intelligent Diagnostics and Communication Capabilities

  • Human-Computer Interface: Equipped withLCD display and control panelUsers can conveniently engage in human-machine dialogue, configure various parameters, and monitor changes in data throughout the startup process.
  • Remote Monitoring Integration:Built-inRS-485Communication interface supporting protocols such as Modbus, enabling remote monitoring through microcomputer network control.
  • Fault Traceability FunctionStores recent fault information (non-volatile memory), assists in rapid diagnostics, and features comprehensive protection functions including overvoltage, undervoltage, input phase loss, output phase loss, current imbalance, start-up overcurrent, and operational overcurrent.
  • Analog OutputProvides a standard 4–20 mA analog current output for easy integration into DCS systems for process control.

3. Energy Efficiency and Economic Advantages

Compared to traditional starting solutions, low-voltage solid-state soft starter cabinets canSignificantly reduce starting currentreduce the impact on the power grid, minimize equipment vibration and noise, and help extend the service life of the motor.This helpsReduce distribution capacityAvoid capacity expansion investmentsAt the same time, by reducing the starting stress, it can significantlyExtend the service life of electric motors and related equipment, saving businesses significant maintenance and replacement costs

IV. Main Technical Parameters

parameter categorySpecification Range and Standard Configuration
rated voltageAC 380V (-201°C to +151°C)
Control Power SupplyAC 220V ±10% %
Rated currentUp to 630A
Applicable Motors30-630 kW General Cage-Type Induction Motors
Starting MethodVoltage ramp, current-limited start, pulse-choke start, constant-voltage start, jog operation
protection classIP20 (can be upgraded as needed)
Cooling method75kW and below: natural air cooling 90kW and above: forced air cooling
environmental conditionsTemperature: -25°C to +40°C, Humidity ≤ 95% RH, no condensation

V. Application Scenarios and Industry Solutions

1. Typical Load Adaptation

  • PumpsHigh-lift pumps, water transfer pumps, circulation pumps, etc., eliminate water hammer hazards. The soft-stop function effectively prevents water hammer phenomena in piping systems.
  • Fans and CompressorsProtect high-inertia loads by utilizing a heavy-load start mode (extended acceleration time) to reduce start-up impact.
  • Heavy machineryBall mills, crushers, conveyors, mixers, etc., reduce mechanical impact and extend equipment service life.
  • Conveying equipmentBelt conveyors, chain plate conveyors, etc., achieve smooth starts to prevent material spillage.

2. Industry Application Cases

  • Power industryProtect auxiliary motors in power plants and distribution systems to ensure the stability and continuity of power generation.
  • Cement IndustryFor ball mills, fans, crushers, and other equipment, addressing equipment lifespan issues under frequent start-stop conditions.
  • Chemical IndustryProvide reliable start-up protection for pumps, compressors, fans, and similar equipment to prevent safety incidents caused by motor failures.
  • Metallurgical industryIn steel smelting and processing operations, protect various critical motor equipment such as rolling mill motors and fan motors.
  • Mining industryUsed in mining hoists, drainage pumps, ventilation fans, and other equipment to ensure safe production in mines.

VI. Selection and Installation Guide

1. Key Selection Factors

  • Motor ParametersRated voltage, power, starting torque requirements, and load characteristics (pumps, fans, or heavy machinery)
  • Operating EnvironmentAltitude, ambient temperature, protection rating, and explosion-proof requirements (capacity should be reduced accordingly when operating above 2000 meters altitude)
  • Functional RequirementsCommunication protocols, soft-stop requirements, remote control methods
  • Load TypeStandard or heavy-duty load, starting frequency (standard products recommend no more than 15 starts/stops per hour)

2. Key Points for Installation and Maintenance

  • Supporting equipmentWhen in use, it must be connected with a bypass contactor and necessary motor protection devices.
  • installation environment: Should be installed in locations free of flammable, explosive, or corrosive gases, without conductive dust, and with vibration levels below 0.5G.
  • Cooling conditionsEnsure adequate ventilation around the cabinet. For forced-air cooling models, ensure the cooling fan is functioning properly.
  • Maintenance CycleRegularly inspect RC absorption units, thyristor configurations, and trigger circuits; clean heat dissipation ducts.

VII. Core Advantages of Xima Low-Voltage Solid-State Soft-Start Cabinets

  • Technical CertificationCertified under the ISO 9001 Quality Management System to ensure consistent and reliable product quality.
  • Reliability DesignAll electrical components undergo rigorous screening. The main control board is subjected to high-temperature cycling tests and vibration tests to ensure high reliability of products upon shipment.
  • Smart ProtectionThe motor start-up process features comprehensive protection functions including phase loss, overload, overcurrent, overheating, and start-up time limitation.
  • Flexible ConfigurationWhen the soft starter's rated power exceeds the actual load power, the actual output current of the soft starter can be adjusted within a certain range to match the actual load current.
  • Full-cycle serviceOne-stop support from solution design and parameter debugging to technical training, with lifetime upgrade services provided.

Low-voltage solid-state soft starter cabinets serve as the ideal replacement for traditional starting equipment. Through their advanced control technology and comprehensive functional features, they provide users with smarter, more reliable motor starting solutions.As industrial automation continues to advance, this product will demonstrate its value across broader applications, delivering greater benefits to industrial users.

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Simo motorsAfter-sales service policy: quality-oriented, the user first!

Sincere, intimate, and devoted, Simo will always be attentive.

preamble

Thank you for choosing Simo Motor products. As an enterprise with many years of experience in motor manufacturing, Simo Motor always insists on “Quality oriented, customer first”For the purpose, through the perfect service system, to ensure that every customer can enjoy efficient and professional after-sales service.

Our products have been awarded the honorary titles of “High Quality Products”, “China Famous Brand Products”, “National Inspection-free Products” and “China Well-known Trademark” for many times by provinces, cities and ministries. Famous Trademark" honorary title. In order to further enhance customer experience, we have formulated this after-sales service policy, aiming to provide customers with comprehensive, fast and satisfactory service guarantee.

I. Quality Assurance Commitments

Simo Motor implements comprehensive quality control in strict accordance with international standards, national standards, machinery industry standards and enterprise standards:

  1. All products are listed in the “GB/T 19001-2008/ISO 9001:2008 quality management system”Production is carried out under effective operation to ensure that raw materials are strictly and perfectly inspected from the time they enter the factory to the time the products leave the factory.

  2. Commitment that all products offered areNew and unusedand meets the quality requirements specified in the user's contract.

  3. Adhere to the quality management system in accordance with “GB/T 19001-2000 idt ISO 9001:2000 standard”, and keep the quality management system running effectively.

Second, pre-sale service content

To help customers make the best choice, Simo Motors offers comprehensive pre-sales support:

  • Specialized technical consulting: Receive inquiries from customers about the business and technical aspects of motors, and answer all kinds of questions from customers.

  • Personalized Solutions: Objectively introduce the performance and characteristics of Simo's motor products and provide customized power solutions according to customer needs.

  • Comprehensive product information: Provide detailed quotations, drawings and motor samples and other information to help customers fully understand the characteristics of the product.

III. Ordering instructions

To ensure that the motor meets your needs, please specify the following parameters when ordering:

  • Basic parameters: Motor model, rated power, rated voltage, number of poles, rated frequency

  • installation environment: Protection class, cooling method, mounting method, rotation direction, environmental conditions, outlet location

  • Conditions of use: Altitude and working temperature of the installation site, type of load of the motor

if anyspecial requirementIf you have any questions about our products, please feel free to contact us, we need to sign another technical agreement before signing the order contract. You can also directly call our customer service hotline:15902923228 Access to professional guidance.

IV. Warranty Policy Details

1. Warranty period

Simo Motors offersNot more than two years from date of shipmentThe warranty service. Within this specified time period, if the motor is damaged or fails to function properly due to poor manufacturing quality, Simo Motors willRepairing or replacing parts or motors at no cost to the user

2. Warranty coverage

  • Warranty covers product quality problems caused by our company, the company will replace the relevant parts or provide free repair.

  • Warranty services need to be based onProper use and normal maintenanceThe machine should be used correctly in accordance with the original operating manual and maintained, lubricated and cleaned in accordance with the original manufacturer's recommendations.

3. Non-warranty coverage

The following are not covered by the warranty:

  • Non-designated maintenance staffDamage caused

  • Unauthorized modifications or self-disassembly

  • utilizationUnofficial spare parts or software

  • Failure to comply with operating manualsPrescribed guidelines for use, handling and maintenance

  • natural disaster(Damage to products caused by wind, fire, flood, earthquake, etc.

  • Natural wear and tear under normal use

V. Post-warranty services

After the expiration of the warranty period, Simo motors provide continuous service support:

  1. Reimbursable services for life: After the expiration of the warranty period, if the product malfunctions, our company implements lifelong paid service, the required wearing parts and spare parts toCost price supply

  2. (pay a) regular return visit: After-sales service staffFrom time to time, we will make return visits to the usersUnderstand the status of product usage and resolve potential issues in a timely manner.

  3. Professional Repair ServiceThe company undertakes the repair of all kinds of motors, regardless of whether they are under warranty or not, and can provide professional overhaul and maintenance services.

VI. Service commitments and standards

Simo Motors is committed to “Sincerity, thoughtfulness, devotion, Simo will always be attentive.”The “Three Hearts” service concept ensures customer experience through standardized service processes:

  1. Professional Services Team: The company has set up a specialized service team to provide installation guidance, troubleshooting and maintenance services to ensure the efficient operation of the products in the process of use.

  2. Rapid Response Mechanism: The after-sales service team will respond promptly to customer feedback and quickly develop solutions.

  3. Full track record: Detailed records are kept for all service sessions to ensure traceability of the service process and continuous improvement of service quality.

VII. User complaint channels

If you are not satisfied with the services provided by Simo Motors, you are welcome to provide feedback through the following channels:

  • direct marketingComplaints from Service Department and Headquarters

  • Call the customer service line:15902923228

We will take every piece of feedback seriously and continue to improve the quality of our services.

concluding remarks

Simo Motors will continue to provide customers withHigh quality products and professional after-sales serviceWe will solve your worries through a perfect service system. We firmly believe that only the success of the customer, the development of Simo. Choosing Simo motor is choosingQuality and Trust

Simo motors--Service with heart, create the future together!

Simo motorsBrand advantage: excellent quality, leading the motor industry innovation and development

More than sixty years of professional precipitation, to create a benchmark brand in the motor industry

Brand heritage and strength

Simo Motors (former)Xi'an Electric Machinery Factory) was founded in 1955, as China's motor industryleading enterprisesThe company is one of the leading manufacturers of electric motors in the world, with more than sixty years of experience and expertise in the manufacturing of electric motors. The company has now developed intoIntegration of R&D, manufacturing and sales of motor productsOur products are widely used in many important fields such as electric power, coal, petroleum, mining, metallurgy, railroad, transportation, chemical industry, agriculture, water conservancy, aviation and so on.

Simo motors are recognized for theirDeep technical heritageContinuous spirit of innovationThe company has established an excellent brand image in the motor industry, and its products are exported to more than 40 countries and regions such as North America, Europe, the Middle East, Southeast Asia, Africa, Australia, etc., which are trusted and highly praised by users all over the world.

Core Technology Advantage

1. Leading research and development innovation capabilities

Simo Electric always takes technological innovation as the core driving force of enterprise development:

  • Professional R&D Team: Has a team ofSenior engineers and technologistsThe R&D team, which is composed of a team of researchers, focuses on the cutting-edge research and application development of motor technology.

  • Continuous technical investment: invest an annual percentage of sales5%-7% As R&D funding to ensure continuous technological innovation and product upgrades

  • Patented Technology Achievements: Cumulative access toMore than a hundred national patentsA number of products have won national and provincial awards for scientific and technological progress.

  • Industry-University-Research Cooperation: Establishing strategic cooperative relationships with many well-known universities and scientific research institutions to jointly promote the development of motor technology.

2. Excellent product quality system

Simo Motors has established a comprehensive quality assurance system to ensure that every motor meets the highest quality standards:

  • International Standard Certification: Fully adoptedISO9001 Quality Management System CertificationISO14001 Environmental Management System CertificationOHSAS18001 Occupational Health and Safety Management System Certification

  • Strict quality control: Implementation from raw material procurement to finished product shipment68 strict quality control proceduresEnsure zero defects in products

  • Advanced testing equipment: Equipped with international advancedMotor Performance Test SystemVibration AnalyzerNoise test equipmentetc., comprehensive testing of various performance indicators of the motor

  • Continuous Quality Improvement: Establish a perfect quality feedback mechanism, continuously optimize the production process, and improve product quality and stability.

Product Advantage Characteristics

1. Energy efficient technologies

Simo Motors actively responds to the national energy-saving and emission reduction policy and launches a series of energy-efficient products:

  • High Efficiency Motor Series: To meet the nationalGB18613-2020 standardEnergy efficiency rating, some products reachIE4, IE5 ultra-high efficiency level

  • Application of energy-saving technologies: AdoptionHigh Quality Silicon Steel SheetLow loss bearingsHigh efficiency cooling systemetc., significantly reducing operational energy consumption

  • Intelligent control technology: Supporting the advancedFrequency control systemThe optimal control of the motor operating state is realized, and the energy-saving effect is improved 15%-30%

2. Excellent performance

Simo Motor products are characterized byHigh reliability, long service life, low maintenance costsAnd famous:

  • Powerful power output: Optimized electromagnetic design solutions to ensure that the motorHigh starting torque and high overload capacity

  • Low vibration and low noise: AdoptionDynamic balancing processnoise reduction technologyThe vibration and noise values are better than the national standards.

  • Highly adaptable to the environmentProduct design takes into account all kinds of severe working conditions, withResistant to high temperature, humidity and corrosionand other properties

  • Long life design: The key components are made of special treatment and high quality materials, and are designed to last up to100,000 hoursthat amount or more

3. Complete product range

Simo Motors offers a comprehensive range of products to meet the needs of different customers:

  • High voltage motorsrange: Voltage level coverage6kV, 10kVMultiple ratings, power range200-10000kW

  • Low Voltage Motor Series:: IncludesYX3, YE3, YE4and other series, power range0.55-1000kW

  • Explosion-proof motorsrange: ByNational explosion-proof certificationFor use in flammable and explosive hazardous areas

  • Specialized motor series: Developed for specific industry needsSpecialized for coal mine, metallurgy, and shipsSpecialty motors

  • Non-standard customization capability: Strong customization and development capability, according to the customer's needsPersonalized Solutions

Service System Advantage

Simo Motor has established a comprehensive customer service system:

  • pre-sales technical support: Provide professional selection guidance, program design and product demonstration

  • Intimate service during the sale: Strict contractual performance, ensuring on-time delivery and providing installation guidance

  • Comprehensive after-sales protection24 months warranty7×24 hours technical support48-hour on-site servicepromise

  • Lifetime maintenance support: Establish customer equipment files and provide full life-cycle service support

Industry Application Advantages

Simo motors have accumulated a wealth of application experience in a number of key industries:

  • Power industry: Provide supporting motors for thermal power, hydropower and nuclear power, with stable and reliable operation.

  • coal industry: Explosion-proof motor products passed the coal mine safety certification, safety recognized by the industry

  • petrochemicalsCorrosion-resistant, explosion-proof special motors to adapt to the harsh working conditions and ensure safe production.

  • Metallurgical industry: High overload capacity, high temperature resistant motors to meet the special needs of metallurgical equipment

  • Transportation: Specialized motor solutions for railroads, rail transit, ports, etc.

Brand Honors and Certifications

Simo motors have won many honors for their excellent product quality and good market performance:

  • China Famous Brand ProductsNational Inspection-free ProductsChina Famous Trademarks

  • High-tech enterprisesProvincial Enterprise Technology Center

  • A number of products won the provincial and ministerial-level scientific and technological progress awards

  • Contract and Trustworthy EnterpriseQuality and reputation AAA grade enterprise

concluding remarks

Choosing Simo motors is choosingReliable quality assuranceLeading Technical StrengthComplete service supportSimo Motors is a leading manufacturer of electric motors in China. With more than sixty years of professional accumulation, Simo motors have a profound technical background and rich industry experience, and are able to provide customers in various industries with the best quality motor products and perfect power solutions.

In the future, Simo Motor will continue to uphold the "Quality-oriented, innovation-driven, customer first"business philosophy, and constantly improve the level of product technology and quality level, to create greater value for customers, and make greater contributions to the development of China's motor industry.

Simo motors - strong power, excellent energy efficiency and perfect service!

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