Overview
Emissions And Stack function generators is based on voltage type inverter principle, uses the isolated gate binary transistor control the value and phase of AC voltage of inverter, so as to serve the purpose of reactive and harmonic compensation. As the switching frequency is very high (dozens of kHz), can realize fast compensation for reactive load, and achieve very high compensation precision is currently the best solution in reactive power control filed. Compared with the traditional SVT represented the regulation speed of SVG is faster (within 5 ms), its compensation precision is high (the power factor is over 0.99), the compensation method is flexible can compensate both inductive reactive power and capacitive reactive power has the function of active filtration of harmonic current.
Technical Specifications
| Rated Voltage | AC 400 V:AC 308 V to 480 V |
| Electric Connection | 3 P 3 W or 3 P 4 W |
| Rated Frequency | 50 Hz or 60 Hz |
| Rated Current per Module | 30 or 50 or 75 or 100 or 150 kvar |
| Reactive Power Compensation Capability | Both stepless inductive and capacitive reactive power compensation |
| Reactive Power Compensation Performance | Cosφ≥0.98 after compensation |
| Imbalance Correction Capability | Mitigate negative and zero sequence |
| Full Response time | <5 ms |
| Instant Response time | <100 us |
| Thermal Loss | ≤3 % of SVG rated capacity (kVA) |
| Output Current Limitation | Automatic (100 % rated capacity) |
| Parallel Expansion (System) | Up to 10 Racks (4 modules per cabinet) |
| MTBF | >100,000 hrs |
| Control Technology | |
| Controller | DSP FPGA IGBT control |
| Communication | Modbus Protocol, RS 232 or 485 |
| Monitoring | PQS HMI Monitor Software (Optional) |
| Physical Specification | |
| IP Grade of Cabinet | IP20 |
| Cooling method | Intelligent forced air cooling |
| Noise Level | < 60 dB(A) at 1 m (Module) |
| Dimension (Cabinet) | 31.4 in x 39.3 in x 86.66 in (800 mm x 1000 mm x 2200 mm) |
| Environmental Requirement | |
| Ambient Temperature | 14 °F to 122 °F (-10 ℃ to 50 ℃) |
| Relative Humidity | 0 % to 95 % |
| Altitude | ≤ 0.62 mi (1000 m) Rated Capacity, |
| 0.62 mi to 1.24 mi (1000 m to 2000 m (derating 1 % per 0.06 mi (100 m) | |
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