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Liquid Resistance Starter Cabinet

Liquid Resistance Starter Cabinet

液体电阻起动柜是一种用于大型异步电机的起动与调速设备,通过液体电阻调节电机起动电流,实现平稳启动和多级调速控制。该设备结构可靠、性能稳定,可有效降低电机启动冲击,减少机械磨损,广泛应用于矿山、冶金、电力及大型工业机械系统。

柜体采用高品质耐腐蚀材料,配备液体电阻调节系统和完善保护装置,操作简便、安全可靠。液体电阻起动技术能够保证电机在启动、加速及减速过程中的平稳性,提高设备运行效率和使用寿命。

  • 液体电阻起动,实现平稳启停

  • 多级调速,适应不同负载工况

  • 降低启动电流冲击,减少机械磨损

  • 操作简便,安全可靠

  • 延长电机及机械设备使用寿命

广泛应用于:矿山磨煤机、冶金轧机、电力传动系统及各类大型工业设备启动与调速场景。

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液体电阻starter cabinet:大中型电机平滑起动的理想解决方案

在工业领域,大中型电机的起动一直是个关键问题,液体电阻起动柜以其独特的技术优势,成为解决这一难题的理想方案。

液体电阻起动柜
Liquid Resistance Starter Cabinet

在工业电机控制领域,Liquid Resistance Starter Cabinet(也称水阻柜)是专为大中型绕线式异步电动机设计的先进起动设备。它通过在电机转子回路中串入特殊配制的液体电阻,并利用极板移动来改变电阻值,实现电动机的平滑无冲击起动

这种起动柜采用电解质水溶液导电原理,靠改变两电极在电解质水溶液里的距离或者调整电解质溶液浓度来改变两电极间电阻值,有效解决了传统起动方式如直接起动、自耦降压起动等存在的起动电流大、机械冲击强等问题。


一、工作原理与技术特点

1. 智能起动原理

液体电阻起动柜基于在电机转子回路中串入液体电阻的原理工作。当起动器接收到电机起动信号时,一台小功率伺服电机带动极板移动,改变极板间的相对位置,使串入转子回路的液体电阻由大到小作无极变化

当电阻值减小到最低时,短接接触器闭合,使电机转子星点直接短接,从而实现电动机的低电流大转矩平滑起动。这种智能化的起动方式有效减小了起动电流,避免了对电网的冲击。

2. 液体电阻的特性优势

液体电阻器属于无级变阻装置,采用电解质水溶液作为电阻介质。这种设计带来了多重优势:

  • 热容量大:可连续起动5~10次
  • 起动电流小:起动电流小于电机额定电流的1.3倍
  • 低压适应性强:电网电压低于电机额定电压的10%时,可顺利起动
  • 无级调节:通过改变电极距离或调整溶液浓度,可在一定范围内无级调整阻值

二、核心结构与设计创新

1. 模块化结构设计

液体电阻起动柜采用Modular design concept,主要由以下几部分组成:

  • 柜体结构:由角钢和金属薄板焊接而成,柜体内预留有电液箱固定位,电气室固定位以及整套传动机构的活动空间
  • 水阻箱:箱内安装有液体电阻起动、定极板,在主机起动过程中正是通过控制改变他们之间的间距来实现软起动的
  • 电气室:安装有各种用于在主机起动过程中参与控制保护的低压电气元件
  • 传动机构:一般采用蜗轮蜗杆升降机作为传动机构,传动平稳、可靠且无噪声

2. 全封闭创新设计

新一代液体电阻起动柜采用全封闭结构设计,配备独特的自循环冷却系统和完善的密封措施。这种设计带来了显著改进:

  • 完善密封系统:柜体和水箱采用全封闭结构,各连接部位均设有精密密封措施,有效避免了电解液的过快蒸发
  • 自循环冷却:设备配备循环泵,组成由外部循环组件和内部循环管件构成的自循环冷却系统,能快速散发电解液箱内产生的热量
  • 广泛环境适应性:特别适合在年降水量不足200毫米的干旱少雨气候环境中长时间运行,解决了传统液体电阻起动器在恶劣环境下易失效的问题

三、性能特点与优势

液体电阻起动柜具有多项卓越的性能特点:

  • 恒电流软起动:起动电流为电机额定运行电流的2.5-3.5倍,降低了电机起动发热现象
  • 起动平稳无冲击:对机械设备无机械应力冲击,可延长机械设备及电机寿命30%左右
  • 高起动成功率:确保一次起动成功,不受电网电压波动和负载变动的影响
  • 对电网影响小:起动时电网压降小,无谐波污染
  • 操作简单安全可靠:全部操作自动化,安装、维护方便

相比传统的频敏变阻器、油浸变阻器、铸铁电阻等起动器,液体电阻起动柜在起动性能、可靠性及使用寿命方面都具有明显优势,同时相对于高压变频软起动器而言,又具有操作简单、免维护、无谐波污染等优势

IV. Application areas and scenarios

液体电阻起动柜可广泛应用于以下领域:

  • 重工业领域: Applicable to建材、冶金、矿山、石油、化工等行业75-10000KW绕线式异步电动机的重载平滑软起动
  • 电力与水利:用于发电厂辅机设备、水泵、压缩机等大型电机的起动
  • 特殊工况:适用于在一定时间内需要连续多次起动的场合,以及电网电压不稳或偏低的工矿企业

该设备常用于球磨机、破碎机、压缩机、风机等重负荷设备的电机起动,是传统频敏变阻起动柜的理想替代产品

五、技术参数与规格

液体电阻起动柜的主要技术参数如下:

参数项目技术规格
适用电机绕线式异步电动机、鼠笼式电动机
rated voltage380V~12KV
功率范围75KW~10000KW
起动电流≤1.3倍额定电流(绕线式);2.5-3.5倍额定电流(鼠笼式)
起动时间10~120秒(可调)
environmental temperature-25℃~+50℃
protection classIP20~IP54

六、选型与安装指南

1. 选型注意事项

在选择液体电阻起动柜时,需提供以下信息:

  • 电动机型号、额定功率、额定转子电流、转子电压和额定转速
  • 电动机拖动的负载特征(工况说明)
  • 安装环境条件,如有无特殊使用要求
  • 柜体表面颜色等外观需求

2. 安装环境要求

为保证液体电阻起动柜的正常运行,安装环境应满足:

  • 周围无显著摇动和冲击振动
  • 无腐蚀性气体
  • 安装倾斜度不超过5°
  • 没有火灾及爆炸危险的场所
  • 电源要求:三相四线交流380V±10%

对于特殊环境,如环境温度长期低于-5℃时需加装加热器;海拔高度超过2000m的地区需要特殊设计

七、维护与故障处理

液体电阻起动柜的维护工作相对简单:

  • 定期检查:定期检查液位是否在正常范围内,当液面低于液位线时,需在停机断电情况下通过加水孔注入蒸馏水
  • 电解液配置:选用碳酸钠水溶液,根据负荷轻重和各种电机转子参数的差异来调整水与碳酸钠的比例,一般情况下电液浓度大致在0.7%~1.2%范围内
  • 保护功能验证:定期验证液阻超温报警、低液位、起动超时等保护功能的可靠性
  • 传动机构检查:检查传动机构是否运行平稳,有无卡涩现象

随着工业技术的不断发展,液体电阻起动柜将在更多行业和领域展现其价值。其独特的技术优势可靠的工作性能,使其成为大中型电机起动领域的理想选择

对于追求设备安全生产稳定的工业企业来说,选择液体电阻起动柜无疑是明智的决策

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

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

preamble

Thank you for choosing Sigma Motor products. As an enterprise with many years of experience in motor manufacturing, Sigma 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

Sigma 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, Sigma 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 Sigma'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

Sigma 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, Sigma 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, Sigma 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

Sigma Motors is committed to “Sincerity, thoughtfulness, devotion, Sigma 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 Sigma 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

Sigma 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 Sigma. Choosing Sigma motor is choosingQuality and Trust

Sigma 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

Sigma 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.

Sigma 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

Sigma 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

Sigma 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

Sigma 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

Sigma 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

Sigma 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

Sigma 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

Sigma 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

Sigma 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 Sigma motors is choosingReliable quality assuranceLeading Technical StrengthComplete service supportSigma Motors is a leading manufacturer of electric motors in China. With more than sixty years of professional accumulation, Sigma 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, Sigma 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.

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

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