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High Voltage Solid-State Soft Starter Cabinet

High-Voltage Solid-State Soft Starter Cabinet

The High-Voltage Solid-State Soft Starter Cabinet is an advanced starting and control device designed for high-voltage motor systems. Using semiconductor components, it enables smooth start and stop, regulates starting current, and controls acceleration time, thereby reducing motor starting impact, minimizing mechanical wear, and optimizing grid load. The cabinet features a compact structure, stable performance, and simple operation, making it ideal for metallurgy, power generation, mining, and large industrial machinery systems.

Equipped with high-quality electrical components and an intelligent control system, the cabinet supports multi-stage soft start, controllable stop, overload protection, and fault alarm functions. The smart control technology can automatically optimize the starting and stopping process based on load conditions, improving operational efficiency and extending motor and equipment lifespan while ensuring safe and stable system operation.

  • Smooth start for high-voltage motors, reducing mechanical and electrical stress

  • Multi-stage soft start and controllable stop functions

  • Intelligent control automatically optimizes start and stop processes

  • Comprehensive protection system with fault alarms, reliable operation

  • Extends motor and equipment service life

Applications: High-voltage pump stations, power transmission systems, fans and compressors, mining and metallurgy industrial large-scale equipment starting scenarios.

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Excerpt:

The high voltage solid-state soft starter cabinet provides smooth and controlled starting for high-voltage motors. It reduces inrush current, prevents mechanical stress, and ensures reliable, energy-efficient motor operation in demanding industrial applications.

High-Voltage Solid-State Soft Starter Cabinet: Intelligent Motor Starting Solution & Core Technology Analysis


01 Product Overview: Advanced High-Voltage Motor Starting Control

The High-Voltage Solid-State Soft Starter Cabinet is an advanced motor starting device using power electronics and intelligent microprocessor control, designed for 3kV to 15kV AC motors. Utilizing thyristor (SCR) phase control, it enables smooth voltage and current ramp-up, eliminating issues like high inrush currents, mechanical stress, and energy wastage caused by traditional direct-on-line starting.

Widely applied in power systems, metallurgy, mining, chemical, and water treatment industries, this device is a key component for modern industrial automation and high-voltage motor control.

02 Core Technology & Structural Design

1. Intelligent Control Principle

  • Microprocessor-Based Control (CPU): Precision SCR firing angle control via fiber-optic isolation.
  • Flexible Start Modes: Includes constant-current start, voltage ramp start, and torque control.
  • Automatic Bypass: Bypass contactor engages when the motor reaches rated speed, ensuring full-voltage efficient operation.

2. Precision Structure & Safety Features

  • Three-Chamber Isolation: Power module, control relay chamber, and main circuit connection chamber independently isolated for high anti-interference capability.
  • Multiple Protection Mechanisms: RC snubber units and static/dynamic voltage balancing; overload capacity of 125% continuous and 500% for 60 seconds.
  • Modular Components: SCR modules, motor protection modules, communication modules, and control transformers enable fast maintenance and expansion.

03 Core Functions & Advantages

1. Multi-Mode Start & Stop

  • Current-Limited Soft Start: Limits inrush current to 100–500% of rated current, avoiding voltage dips.
  • Voltage Ramp Control: Adjustable initial torque (10–80% of rated voltage) for smooth acceleration.
  • Soft Stop Function: Gradually reduces voltage to eliminate water hammer in pumps, protecting piping systems.

2. Intelligent Diagnostics & Communication

  • HMI Interface: LCD display shows three-phase current, fault logs, and runtime; supports multilingual interface.
  • Remote Monitoring: RS-485 interface supports Modbus/Profibus-DP; integrates with DCS/PLC for centralized control.
  • Fault Traceability: Stores last three faults with data for fast diagnostics.

3. Energy Efficiency & Cost Savings

  • Reduces transformer capacity by over 40% compared to direct-on-line start.
  • Example: 800kW pump application reduces transformer from 4500kVA to 2500kVA, saving over $60,000 in initial investment and lowering annual electricity consumption by 23,000 kWh.

04 Technical Specifications

ParameterSpecification
Rated Voltage3kV, 3.3kV, 6kV, 6.6kV, 10kV (AC -15%~+10%)
Insulation Level42kV/1min, max 42kV
Power Range250kW–25,000kW
Overload Capacity125% continuous, 500% for 60s
Operating Temperature-20℃~50℃
Altitude≤2000m
Humidity≤90%
Protection LevelIP42/IP54 optional
Control PowerAC 220V/50Hz, 600VA

05 Application Scenarios & Industry Solutions

1. Typical Load Applications

  • Pumps: High-lift, circulation, and supply pumps; eliminates water hammer.
  • Fans & Compressors: Soft start protects high-inertia loads with extended acceleration time.
  • Heavy Machinery: Ball mills, crushers, conveyors, mixers; reduces mechanical stress.

2. Industry Cases

  • Gansu Jingdian Phase II Pump Station: RNMV series successfully started 32 high-voltage pumps with smooth operation and energy savings.
  • Steel & Cement: Applications in Hebei Baoxing Steel and Shanxi Tongli Cement; extends equipment life under frequent stop-start conditions.
  • Overseas Project: 50,000-ton Malaysian paper plant uses high-voltage soft starter meeting international standards.

06 Selection & Installation Guide

1. Key Selection Factors

  • Motor parameters: voltage, power, starting torque, load type.
  • Environment: altitude, temperature, protection level (IP42/IP54), explosion-proof requirements.
  • Function: communication protocols (Modbus/Profibus), soft stop, remote control.

2. Installation & Maintenance

  • Incoming Cabinet: Must be paired with vacuum circuit breakers for short-circuit capacity compatibility.
  • Cooling: Natural cooling; ensure adequate ventilation in high-temperature environments.
  • Maintenance: Periodically inspect RC snubbers, SCR modules, and fiber-optic trigger circuits.

07 Core Advantages of Simo High-Voltage Solid-State Soft Starter

  • Certified Technology: GB/IEC compliance; proprietary core software.
  • Reliability: Imported power devices, strict parameter matching, designed for >100,000 hours service life.
  • Full Lifecycle Support: One-stop service from design, commissioning, to training; lifetime upgrades available.

Simo High-Voltage Solid-State Soft Starter Cabinet offers advanced control, intelligent protection, energy efficiency, and operational reliability, making it an ideal solution for modern industrial high-voltage motor applications, ensuring safe, cost-effective, and long-lasting motor operation.

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Simo Motor After-Sales Service Policy: Quality First, Customer Foremost

Sincere, Attentive, Dedicated — Simo Always Cares


Preface

Thank you for choosing Simo Motor products. As a company with many years of experience in motor manufacturing, Simo Motor always adheres to the principle of "Quality First, Customer Foremost." Through a comprehensive service system, we ensure that every customer enjoys efficient and professional after-sales support.

Our products have repeatedly been awarded provincial, municipal, and national honors such as “High-Quality Product,” “China Famous Brand Product,” “National Exemption from Inspection Product,” and “China Well-Known Trademark.” To further enhance customer experience, we have formulated this after-sales service policy, aimed at providing comprehensive, prompt, and satisfactory service guarantees.


1. Quality Assurance Commitment

Simo Motor strictly implements full quality control in accordance with international standards, national standards, industry standards, and corporate standards:

  • All products are manufactured under the effective operation of the GB/T 19001-2008/ISO 9001:2008 Quality Management System, ensuring rigorous inspection from raw material intake to final product delivery.

  • We guarantee that all products provided are brand new, unused, and meet the quality requirements stipulated in customer contracts.

  • We maintain a quality management system compliant with GB/T 19001-2000 idt ISO 9001:2000, ensuring its effective operation.


2. Pre-Sales Service

To help customers make the best choice, Simo Motor provides comprehensive pre-sales support:

  • Professional Technical Consultation: Responding to customer inquiries about motor products and technical issues.

  • Personalized Solutions: Objectively introducing Simo Motor product features and performance, and providing customized power solutions.

  • Comprehensive Product Information: Providing detailed quotations, drawings, and motor samples to help customers fully understand the product.


3. Ordering Instructions

To ensure the motor meets your usage requirements, please specify the following parameters when placing an order:

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

  • Installation Environment: Protection level, cooling method, installation type, rotation direction, environmental conditions, cable exit position.

  • Usage Conditions: Installation altitude, working environment temperature, motor load type.

For special requirements, a separate technical agreement must be signed before placing an order. You may also call our customer service hotline 159-0292-3228 for professional guidance.


4. Warranty Policy Details

1. Warranty Period

Simo Motor provides a warranty of up to two years from the shipping date. Within this period, if the motor is damaged or cannot operate properly due to manufacturing defects, Simo Motor will repair or replace parts or the motor free of charge.

2. Warranty Coverage

  • The warranty covers product quality issues caused by our company, with free replacement of parts or free repair.

  • Warranty services require correct use and regular maintenance, following the original operation manual and recommended lubrication, cleaning, and care instructions.

3. Exclusions from Warranty

The following are not covered by the warranty:

  • Damage caused by non-designated personnel

  • Unauthorized modifications or self-repair

  • Use of non-official parts or software

  • Failure to follow operation manual instructions for use, handling, and maintenance

  • Damage caused by natural disasters (wind, fire, flood, earthquake, etc.)

  • Normal wear and tear under standard use


5. Post-Warranty Service

After the warranty expires, Simo Motor continues to provide service support:

  • Lifetime Paid Service: After the warranty period, if the product fails, we offer lifetime paid service, supplying consumable parts and components at cost price.

  • Regular Follow-Up: Our after-sales staff will periodically contact users to check product status and address potential issues.

  • Professional Repair Services: The company undertakes repair services for all types of motors, whether under warranty or not, providing professional maintenance and inspection.


6. Service Commitment and Standards

Simo Motor upholds the "Sincere, Attentive, Dedicated — Simo Always Cares" Three-Heart Service Philosophy, ensuring excellent customer experience through standardized service processes:

  • Professional Service Team: A dedicated team provides installation guidance, fault diagnosis, and repair services, ensuring efficient motor operation.

  • Rapid Response Mechanism: After receiving customer feedback, our after-sales team responds promptly and formulates quick solutions.

  • Full Tracking and Records: All service processes are documented to ensure traceability and continuous improvement of service quality.


7. Customer Complaint Channels

If you are not satisfied with Simo Motor’s services, please provide feedback through the following channels:

  • Direct complaints to the service department or headquarters

  • Call our customer service hotline: 159-0292-3228

We take every feedback seriously and continuously strive to improve our service quality.


Conclusion

Simo Motor will continue to provide high-quality products and professional after-sales service. Through a complete service system, we solve your concerns and ensure peace of mind. We firmly believe that only with customer success can Simo Motor grow. Choosing Simo Motor means choosing quality and trust.

Simo Motor — Dedicated Service, Creating the Future Together!

Simo Motor Brand Advantages: Outstanding Quality, Leading Innovation and Development in the Motor Industry

Over 60 Years of Professional Experience, Setting the Benchmark in the Motor Industry


Brand Heritage and Strength

Simo Motor (formerly Xi’an Motor Factory) was established in 1955. As one of the leading enterprises in China’s motor industry, it has over six decades of manufacturing experience and technical expertise. Today, the company has grown into a large-scale modern enterprise integrating motor product R&D, manufacturing, and sales. Its products are widely used in key sectors such as power, coal, petroleum, mining, metallurgy, railways, transportation, chemical, agriculture, water conservancy, and aviation.

With profound technical expertise and continuous innovation, Simo Motor has built a prestigious brand image in the motor industry. Its products are exported to more than 40 countries and regions, including North America, Europe, the Middle East, Southeast Asia, Africa, and Australia, earning trust and praise from global customers.


Core Technology Advantages

1. Leading R&D and Innovation Capability

Simo Motor treats technological innovation as the core driving force of enterprise development:

  • Professional R&D Team: Composed of senior engineers and technical experts focusing on cutting-edge motor technology research and applications.

  • Continuous Investment in Technology: 5%-7% of annual sales revenue is invested in R&D to ensure continuous innovation and product upgrades.

  • Patented Technology Achievements: Over 100 national patents, with multiple products receiving national and provincial science and technology progress awards.

  • Industry-Academia Collaboration: Strategic partnerships with renowned universities and research institutes to advance motor technology development.

2. Excellent Product Quality System

Simo Motor has established a robust quality assurance system to ensure each motor meets the highest standards:

  • International Certifications: ISO9001 Quality Management, ISO14001 Environmental Management, and OHSAS18001 Occupational Health and Safety certifications.

  • Strict Quality Control: 68 rigorous inspection processes from raw material procurement to final product delivery to ensure zero defects.

  • Advanced Testing Equipment: Equipped with international motor performance testing systems, vibration analyzers, noise measurement devices, and more.

  • Continuous Quality Improvement: Comprehensive feedback mechanisms for continuous optimization of production processes and product stability.


Product Advantages and Features

1. High-Efficiency Energy-Saving Technology

Simo Motor actively responds to national energy-saving policies with a series of high-efficiency products:

  • High-Efficiency Motor Series: Meets the national GB18613-2020 energy efficiency standards, with some products reaching IE4/IE5 ultra-high efficiency levels.

  • Energy-Saving Technology: Uses premium silicon steel, low-loss bearings, and efficient cooling systems to reduce operating energy consumption.

  • Intelligent Control Technology: Advanced variable frequency control systems optimize motor operation, improving energy savings by 15%-30%.

2. Outstanding Performance

Simo Motor products are known for high reliability, long service life, and low maintenance costs:

  • Powerful Output: Optimized electromagnetic design ensures high starting torque and strong overload capability.

  • Low Vibration and Noise: Dynamic balancing and noise reduction technologies ensure vibration and noise levels below national standards.

  • Strong Environmental Adaptability: Designed for harsh conditions with heat resistance, moisture-proof, and corrosion-resistant features.

  • Long Lifespan Design: Key components use specialized treatment and premium materials, with a design life exceeding 100,000 hours.

3. Comprehensive Product Series

Simo Motor provides a wide range of products to meet diverse customer needs:

  • High-Voltage Motors: Voltage levels of 6kV, 10kV, and power range 200–10,000 kW.

  • Low-Voltage Motors: Series such as YX3, YE3, YE4, with power range 0.55–1,000 kW.

  • Explosion-Proof Motors: Certified for use in flammable and explosive environments.

  • Special Motors: Customized for industries such as mining, metallurgy, and marine applications.

  • Non-Standard Customization: Strong ability to provide tailored solutions according to customer requirements.


Service System Advantages

Simo Motor has established a comprehensive customer service system:

  • Pre-Sales Technical Support: Professional selection guidance, solution design, and product demonstration.

  • In-Sales Support: Strict contract compliance, on-time delivery, and installation guidance.

  • After-Sales Guarantee: 24-month warranty, 24/7 technical support, 48-hour on-site service commitment.

  • Lifetime Maintenance Support: Customer equipment files maintained for full lifecycle service.


Industry Application Advantages

Simo Motor has extensive experience across key industries:

  • Power Industry: Provides reliable motors for thermal, hydro, and nuclear power.

  • Coal Industry: Explosion-proof motors certified for coal mine safety.

  • Petrochemical Industry: Corrosion-resistant and explosion-proof motors for harsh environments.

  • Metallurgy: High-overload, high-temperature resistant motors meet specialized equipment needs.

  • Transportation: Customized motors for railways, urban transit, and ports.


Brand Honors and Certifications

Simo Motor’s excellent product quality and market performance have earned multiple honors:

  • China Famous Brand Product, National Exemption from Inspection Product, China Well-Known Trademark

  • High-Tech Enterprise, Provincial Enterprise Technology Center

  • Multiple provincial and ministerial-level science and technology awards

  • Credit-worthy and trustworthy enterprise, AAA-level quality reputation


Conclusion

Choosing Simo Motor means choosing reliable quality, leading technology, and comprehensive service support. Over 60 years of professional accumulation have given Simo Motor deep technical expertise and rich industry experience, providing customers with the best motor products and complete power solutions.

In the future, Simo Motor will continue to adhere to the philosophy of “Quality First, Innovation Driven, Customer Foremost”, constantly improving product technology and quality, creating greater value for customers, and contributing to the development of China’s motor industry.

Simo Motor — Powerful, Efficient, and Fully Supported!

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