Sowest Electric
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Suitable for civil applications such as office buildings and hospitals, as well as industrial settings including chemical plants, smelting facilities, and machinery manufacturing.
The APF series active power filters can be used in both low-voltage grids ranging from 0.4kV to 0.85kV and medium-voltage grids ranging from 6kV to 35kV.
By monitoring load current and extracting harmonic currents, the filters cause the IGBTs to generate counter-phase harmonic currents. This suppresses harmonics at the device connection point, preventing harmonic pollution of the grid.
| Technical Specifications | ||
|---|---|---|
| Sysparams | Rated Voltage | 0.4kV-35kV |
| Sysparams | Electrical Wiring | Three-phase three-wire/three-phase four-wire |
| Sysparams | Grid Frequency | 50Hz/60Hz ±1Hz |
| Sysparams | Circuit Topology | Three-phase three-level |
| Sysparams | Full Response Time | <5ms |
| Sysparams | Harmonic Rejection Ratio | Greater than 97% |
| Sysparams | Total Equipment Loss | <2.5% |
| Sysparams | Switching Frequency | 20kHz |
| Sysparams | Cooling Method | Intelligent air cooling |
| Sysparams | Noise Level | <60dB |
| Sysparams | Mounting Method | Wall-mounted, cabinet-mounted |
| Main Functions | Harmonic Current Compensation | 3rd to 25th harmonics (optional 3rd to 49th) |
| Main Functions | Reactive Current Compensation | Capacitive/inductive |
| Main Functions | Unbalanced Current Compensation | Negative sequence/zero sequence |
| Communication | Communication Interface | RS-485 |
| Communication | Communication Protocol | Modbus protocol |
| Communication | Fault Alarm | Yes |
| Communication | Local Display | 7-inch Chinese color touchscreen (optional) |
| Communication | Remote Monitoring | Supports MODBUS protocol, supports mobile app |
| Environment | Ambient Temperature | -20°C to 50°C |
| Environment | Relative Humidity | ≤90% RH without condensation |
| Environment | Installation Altitude | Operates at rated capacity up to 1000m |
