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- Low-Voltage Reactive Power Automatic Compensation Cabinet: An Intelligent Power Management Solution for Enhanced Energy Efficiency
Low-Voltage Reactive Power Automatic Compensation Cabinet: An Intelligent Power Management Solution for Enhanced Energy Efficiency
Product Overview
The low-voltage reactive power automatic compensation cabinet employsMicroprocessor-based intelligent controlReactive Power Compensation Device, specifically designed for 380V/400V low-voltage power distribution systems. This product achievesAutomatic Switching Power CapacitorsReal-time improvement of power grid power factor, capable of elevating the system's power factor from 0.60-0.80 to0.95 or highereffectively reduce line losses and transformer load, achievingEnergy Conservation and Consumption Reduction with Power Quality Optimizationdual objectives.

Simo motorsThe low-voltage reactive power automatic compensation cabinet integratesIntelligent Detection, Automatic Control, and Multiple ProtectionsTechnology, widely applied in industrial plants, commercial buildings, municipal facilities, and other low-voltage power distribution sites, provides users with efficient and reliable reactive power compensation solutions.
Core Technical Features
1. Intelligent Control System
- Fully Automatic Reactive Power Compensation: Real-time monitoring of reactive power demand, automatically switching in capacitor banks of appropriate capacity
- Multi-control strategySupports multiple control modes including power factor, reactive power, voltage, and time.
- Advanced switching technology: AdoptionCompound switches, thyristors, or smart capacitorsSuch technologies enable surge-free switching.
- Human-Computer InterfaceEquipped with an LCD display that shows system parameters and operational status in real time.
2. High-efficiency compensation performance
- Rapid Response CapabilityResponse time ≤ 20 ms, meeting reactive power compensation requirements for dynamic loads.
- High-precision controlPower factor control accuracy reaches 0.01, with high compensation precision.
- Multi-stage compensation methodSupports multiple switching modes including isochoric, coded, and fuzzy control to achieve precise compensation.
3. Multiple Protection Mechanisms
- Overvoltage ProtectionWhen the system voltage exceeds the set value, the operating capacitor bank is automatically disconnected.
- Undervoltage ProtectionWhen the system voltage falls below the set value, the system will automatically exit operation.
- Overcurrent ProtectionWhen the current of the capacitor bank exceeds the rated value, it will automatically disconnect and trigger an alarm.
- Temperature ProtectionEquipped with over-temperature protection to ensure safe operation of the equipment.
Technical Parameter
| parameter category | technical specification |
|---|---|
| rated voltage | 380V/400V ±20% |
| Rated frequency | 50Hz ±5% |
| Compensation Method | Phase-by-phase compensation, three-phase compensation, phase-by-phase + three-phase hybrid compensation |
| Number of control channels | 6-18 channels (expandable as needed) |
| protection class | IP30, IP40 (optional) |
| environmental temperature | -25°C to +55°C |
| Compensation capacity | Single-unit capacity options range from 5 kvar to 60 kvar. |
| Insulation class | Main circuit: ≥1000V Control circuit: ≥500V |
Application Areas
1. Industrial Manufacturing Sector
- Factory Power Distribution SystemLocations with concentrated inductive loads such as stamping equipment, welding equipment, and cranes
- Manufacturing production lineFluctuating loads such as automated production lines and machine tools
- Industrial plantResolving power factor-related electricity charges
2. Commercial and Public Buildings
- Business CenterPower Distribution Systems for Large Shopping Malls and Office Buildings
- Public facilitiesHospitals, schools, gymnasiums, and other public places
- Hotel Food and BeverageCompensation for inductive loads such as air conditioning systems and kitchen equipment
3. Special application scenarios
- New Energy SectorGrid Connection Point Compensation for Photovoltaic Power Stations and Wind Farms
- rapid transitReactive Power Compensation for Power Distribution Systems in Subway and Light Rail Stations
- Data CenterPower Quality Optimization for Power Distribution Systems of Servers, UPS, and Other Equipment
Product Advantages
1. Significant energy-saving benefits
- Reduce line lossesBy improving the power factor, it effectively reduces line current and minimizes line losses.
- Reduce electricity expensesAvoid power factor penalties from utility providers and enjoy electricity bill rebates.
- Enhance equipment efficiencyReduce temperature rise in transformers and power lines to extend equipment service life.
2. Safe and reliable operation
- Intelligent Protection System: Equipped with comprehensive electrical protection functions to ensure safe operation of the equipment.
- Premium components: AdoptionMetalized Film CapacitorsSelf-healing capability, long service life
- Reliable switching device:UseProfessional Switching SwitchOperating life exceeds 100,000 cycles
3. Simple and Intelligent Maintenance
- modular designFeatures standardized and modular design for easy and quick maintenance.
- Intelligent Diagnostic FunctionAutomatically detects fault type and location, reducing maintenance time.
- Remote MonitoringSupports RS485 communication, enabling remote monitoring and data acquisition.
Selection Guide
1. Selection Criteria
- Load Characteristic AnalysisUnderstand the types, capacity, and operating characteristics of inductive loads in the system.
- Existing Power FactorMeasure the current power factor of the measurement system to determine the compensation capacity requirement.
- Harmonic conditionsDetect harmonic content in the power grid to determine whether harmonic filtering compensation equipment is required.
- installation environmentConsider requirements such as ambient temperature, humidity, and protection rating.
2. Capacity Calculation
Compensation capacity can be estimated using the following formula:
Qc = P × (tanφ1 - tanφ2)
Among these:
- Qc: Required compensation capacity (kvar)
- P: System Active Power (kW)
- φ1: Power factor angle before compensation
- φ2: Power factor angle after compensation
3. Configuration Recommendations
- Basic Configuration:Suitable for general industrial settings with stable loads
- Enhanced Configuration:Suitable for applications with significant load fluctuations and high demands on power quality.
- Special Configuration:Suitable for locations with severe harmonic pollution or special protection requirements.
Installation and Maintenance
1. Installation Requirements
- installation environmentWell-ventilated, free of corrosive gases, and free of conductive dust
- Electrical ConditionsComplies with national electrical installation standards and features reliable grounding.
- Space RequirementsEnsure sufficient space for heat dissipation and maintenance access.
2. Maintenance and Upkeep
- Daily InspectionCheck whether the operational status indicator lights and instrument displays are functioning normally.
- Regular maintenanceInspect connection fasteners and the external condition of capacitors every six months.
- Professional MaintenanceIt is recommended to conduct a comprehensive electrical parameter inspection once a year.
Service Support
Simo Electric provides customers with comprehensive technical services:
- Technical ConsultationProvide professional selection recommendations and technical solution design
- Installation GuideDispatch professional technical engineers to provide installation guidance.
- Operational TrainingProvide specialized training for equipment operators and maintenance personnel.
- After-sales Support18-month warranty period with lifetime technical support
concluding remarks
Low-voltage reactive power automatic compensation cabinet with itsAdvanced control technology、Reliable operational performance和Significant energy savingshas become an indispensable component in modern power distribution systems. Leveraging years of technical expertise and industry experience, Xima Motors provides customers withHighly efficient and reliable compensation solutionsHelp users improve power quality, reduce operating costs, and achieve sustainable development.





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