VAR Generator
Static Var Generator (SVG) is a reactive power compensation device known for its fast response time and excellent compensation performance. Compared with traditional reactive power compensation products, the device offers advantages such as high reliabili-ty, large compensation capacity, simple operation and design, and excellent cost-effectiveness.
Products Description
The main components are sourced from the original manufacturer and feature a modular design that makes it easy for installation, commissioning, and maintenance. Once powered on, the device performs self-checks and operates automatically, requiring no manual intervention.
Product Features
The main power device adopts the next-generation semiconductor component SiC Mosfet, which offers a switching frequency greater than 100kHz, high power density, low loss, and high efficiency, with a power factor compensation up to 0.99. The PCBA is fully sealed, ensuring protection against dust, condensation, and salt spray. The device offers flexible installation options (cabinet-mounted or wall-mounted), and maintenance is straightforward.
Application Scenarios
Modern buildings, rail transportation, communications, petrochemical, new energy, medical treatment, semiconductors, steel, and other light and heavy industrial fields.
Data Sheet
| Electrical parameters | |
| Wiring method | Three-phase three-wire, three-phase four-wire |
| Operating voltage | 380V±20% |
| Operating frequency | 50/60Hz, ±10% |
| Product specifications | 30kvar, 50kvar, 70kvar, 100kvar |
| Current transformer specifications | 50:5 ~ 20000:5, 50:1~20000:1 |
| Noise | ＜65dB |
| Technical features | |
| Switching devices | SiC Mosfet |
| Switching frequency | >100kHz |
| Heat dissipation methods | Intelligent air cooling |
| Heat dissipation control | Adaptive fan speed adjustment |
| Protection functions | Output overcurrent protection, output current limiting protection, over-temperature protection, DC bus overvoltage protection, AC input undervoltage protection, AC input overvoltage protection, control system fault protection, main circuit component damage and disconnection protection |
| Compensation performance | |
| Reactive power compensation | -1 to +1 adjustable (within device capacity range) |
| Overall efficiency | ≥99% |
| Active power loss | ＜1% |
| Full response time | <5ms |
| Compensation for three-phase imbalance | 100% full imbalance compensation |
| Display Interface | |
| Display screen | 7-foot full-color touchscreen |
| Language | Chinese, English, and customizable languages. |
| Battery display | Displays data including distortion rate, power factor, power, voltage, and current. |
| Communication interface and protocol type | RS485, TCP/IP, Modbus protocols, and 4G long-distance data transmission. |
| Environmental conditions | |
| Operating temperature | -25℃~+50℃ |
| Relative humidity | <95%, no condensation |
| Altitude | <5000 meters (above 1000 meters, capacity decreases by 1% for every additional 100 meters) |
| Others | |
| Protection level | IP20 rating, other ratings available upon request. |
| Installation method | Rack-mount, wall-mount, integrated cabinet configurations. |
Q&A
SiC mosfets possess extremely high thermal conductivity and thermal stability, enabling it to maintain excellent performance even at high temperatures. The junction temperature of SiC devices can reach 175°C, while the junction temperature of IGBTs is 150°C.
Advantages of High-Temperature Performance:
1. Simplified Cooling System Design: The high-temperature tolerance of SiC devices greatly simplifies system cooling design. Because SiC devices can operate stably at higher temperatures, the need for a cooling system is reduced, which not only reduces system design complexity but also lowers cooling system costs.
2. Improved System Reliability: The stable performance of SiC devices in high-temperature environments ensures the reliability and stability of active filters under harsh operating conditions.
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