High-Quality AHF Harmonic Filter in China - Leading Suppliers and Factory for Power Quality Solutions
Industrial Applications
AHF is suitable for industrial high-capacity loads, such as rectifiers, frequency converters, large UPS, arc furnaces, intermediate frequency furnaces, three-phase chargers, and other three-phase load scenarios.
Commercial Applications
Suitable for single-phase nonlinear loads in commercial buildings, such as energy-saving lamps, computers, UPS, elevators, variable frequency air conditioners, etc., which generate third harmonic and heat up the N-line.
Technical Indicators
| Item | 400V | 660V | |||
|---|---|---|---|---|---|
| Current rating | 50A | 100A | 135A | 50A | 100A |
| Voltage level | 380V, 440V, 480V | 600V, 660V, 690V | |||
| Voltage range | -20%~+15% | ||||
| Frequency | 50/60Hz±5% | ||||
| Phases | 3 phase 3 wire, 3 phase 4 wire | ||||
| Response time | ≤10us | ||||
| Parallel operation | Unlimited, Max 6 modules for one SAM controller | ||||
| Overload capability | 110%, 1 minute | ||||
| Efficiency | ≥97.5% | ||||
| CT location | Grid side or Load side | ||||
| Function | Harmonics, reactive power, unbalance compensation | ||||
| Harmonics | Up to 50th order | ||||
| Communication | Modbus, TCP/IP, IEC61850, others upon request | ||||
Products Advantage
Thermal design and structural optimization based on precise models
Miniaturization, occupying less space
Compensation for specified harmonic frequencies, adjustable inductive and capacitive reactive power compensation system, automatic detection of unbalanced loads, suppression of system resonance, and full function monitoring system
Increased operational efficiency by avoiding unplanned stops
Lower losses in the transformer
Prolonged equipment lifetime
Standard compliance
Frequently Asked Questions
Q: What is the main application of this Active Harmonic Filter (AHF)?
AHF is designed for both industrial high-capacity loads (such as rectifiers, frequency converters, large UPS, and arc furnaces) and commercial single-phase non-linear loads (such as energy-saving lamps, computers, and variable frequency air conditioners) to mitigate harmonics and balance three-phase loads.
Q: What voltage levels and ranges does the system support?
The system supports two main voltage levels: 400V (applicable for 380V, 440V, 480V) and 660V (applicable for 600V, 660V, 690V). The acceptable grid voltage range is -20% to +15% at a frequency of 50/60Hz±5%.
Q: How fast does the AHF respond to load changes?
The Active Harmonic Filter features an ultra-fast response time of ≤10 microseconds (us), enabling real-time compensation for dynamic load variations.
Q: Can multiple AHF modules be installed and run in parallel?
Yes, parallel operation capacity is unlimited. Up to 6 modules can be managed and monitored under a single SAM controller configuration.
Q: What communication protocols are integrated into the system?
The system supports standard communication protocols including Modbus, TCP/IP, and IEC61850, with options for other protocols upon specific request.
Q: How does the AHF improve operational efficiency?
By compensating for harmonics up to the 50th order, adjusting reactive power, and balancing loads, it prevents unplanned system stops, lowers losses in the transformer, and prolongs the lifetime of connected equipment.