Technical Parameters
| Parameter | Specification |
| Rated Voltage | 400V / 440V / 480V / 690V |
| Rated Frequency | 50Hz / 60Hz |
| Rated Capacity | 30kvar ~ 600kvar |
| Compensation Mode | Automatic / Manual |
| Switching Element | Contactor / Thyristor Switch / Hybrid Switch |
| Control Mode | Automatic Power Factor Control |
| Target Power Factor | 0.90 ~ 0.99 / Adjustable |
| Response Time | Contactor: 1-5s / Thyristor: 20-50ms |
| Protection Class | IP30 / IP40 / IP54（Optional） |
| No. | Rated Capacity (kvar) | Number of Compensation Steps | Capacity per Step (kvar) | Width (mm) | Depth (mm) | Height (mm) |
| 1 | 30 | 3 | 10 | 600 | 800 | 2200 |
| 2 | 45 | 3 | 15 | 600 | 800 | 2200 |
| 3 | 60 | 4 | 15 | 600 | 800 | 2200 |
| 4 | 75 | 5 | 15 | 800 | 800 | 2200 |
| 5 | 90 | 6 | 15 | 800 | 800 | 2200 |
| 6 | 100 | 5 | 20 | 800 | 800 | 2200 |
| 7 | 120 | 6 | 20 | 800 | 800 | 2200 |
| 8 | 150 | 5 | 30 | 800 | 800 | 2200 |
| 9 | 180 | 6 | 30 | 800 | 1000 | 2200 |
| 10 | 200 | 10 | 20 | 1000 | 1000 | 2200 |
| 11 | 240 | 8 | 30 | 1000 | 1000 | 2200 |
| 12 | 300 | 10 | 30 | 1000 | 1000 | 2200 |
| 13 | 360 | 12 | 30 | 1200 | 1000 | 2200 |
| 14 | 400 | 10 | 40 | 1200 | 1000 | 2200 |
| 15 | 450 | 15 | 30 | 1200 | 1000 | 2200 |
| 16 | 500 | 10 | 50 | 1200 | 1000 | 2200 |
| 17 | 600 | 12 | 50 | 1200 | 1000 | 2200 |
Note: The dimensions above are for reference only. Specific dimensions can be customized according to customer requirements.
| Switching Element | Response Time | Features | Application |
| Contactor | 1-5s | Low cost, simple structure, suitable for stable loads | General industrial, commercial |
| Thyristor Switch | 20-50ms | Zero-crossing switching, no inrush current, fast response, suitable for dynamic loads | Fast-changing loads |
| Hybrid Switch | 20-50ms | Thyristor zero-crossing switching, contactor operation, low power consumption | Various loads |
Product Features
| Feature | Description | ||
| Automatic Compensation | Automatically switches capacitors based on load reactive power changes, maintaining power factor within the set range. | ||
| Multi-Step Compensation | Multi-level capacitor banks allow step-by-step switching for precise compensation. | ||
| Zero-Crossing Switching | Thyristor switches achieve zero-crossing switching, no inrush current impact, extending capacitor life. | ||
| Harmonic Suppression | Optional reactors (6%, 7%, 14%) for harmonic suppression, protecting capacitors. | ||
| Intelligent Control | Equipped with power factor controller, real-time display of power factor, voltage, current, etc., supports communication functions. | ||
| Multiple Protection | Multiple protections including overvoltage, undervoltage, overcurrent, overtemperature, phase loss, ensuring safe operation. | ||
Applications
| Application | Recommended Capacity | Key Advantages |
| Industrial Enterprises | 100-600kvar | Improve power factor, reduce electricity cost |
| Commercial Buildings | 50-300kvar | Energy saving, improve power quality |
| Residential Communities | 30-200kvar | Stabilize voltage, reduce line losses |
| Data Centers | 100-500kvar | Improve power quality, ensure equipment operation |
| Hospitals | 50-300kvar | Stable power supply for critical equipment |
| Charging Stations | 100-500kvar | Dynamic compensation for fast-changing loads |
Selection Guide
Determine required compensation capacity based on transformer capacity and load characteristics:
| Total Load Power (kW) | Recommended Main Busbar Current (A) |
| Transformer Capacity (kVA) | Recommended Compensation Capacity (kvar) |
| 100 | 30-45 |
| 160 | 45-60 |
| 200 | 60-75 |
| 250 | 75-100 |
| 315 | 100-120 |
| 400 | 120-150 |
| 500 | 150-180 |
| 630 | 180-240 |
| 800 | 240-300 |
| 1000 | 300-360 |
| 1250 | 360-450 |
| 1600 | 450-600 |
| Load Type | Recommended Switching Element |
| Stable Loads | Contactor |
| Fast-Changing Loads | Thyristor Switch |
| General Loads | Hybrid Switch |
| Reactor Rate | Application Scenario |
| 6% | Mainly suppresses 5th harmonic |
| 7% | Suppresses 5th and 7th harmonics |
| 14% | Mainly suppresses 3rd harmonic |
| None | No or low harmonic content |
Customization Services
Sline provides comprehensive customization services for low voltage capacitor banks based on your project requirements:
| Customization Option | Description |
| Rated Capacity | 30kvar ~ 600kvar / Optional |
| Rated Voltage | 400V / 440V / 480V / 690V / Optional |
| Number of Compensation Steps | 3-15 steps optional |
| Switching Element | Contactor / Thyristor Switch / Hybrid Switch |
| Reactor Configuration | 6% / 7% / 14% / Optional |
| Control Mode | Automatic Power Factor Control |
| Communication Function | RS485 / Modbus / Ethernet |
For detailed technical drawings or customized solutions, please contact the Sline technical team. We will provide one-on-one engineer-led service throughout the process.
