Wanlida Low Voltage Harmonic Filter - Product
UNIT PRICE
USD 9200~35400 ...
Place of Origin : Zhuhai,China
Delivery Terms : 25days
Product Capacity : 1000 Sets / Year
Payment Terms : TT, L/C
Product Description
Wanlida harmonic filter can dynamically filter harmonic with variable amplitude and frequency and compensate reactive power.
Transfer Function All Pass
Power Supply Voltage(kV) 0.4/0.69kV (±15%)
Power Supply Frequency (Hz) 50 /60Hz
Power Supply Mode 3-phase 3-wire or 3-phase 4-wire
Harmonic Compensation Order 2~50
Response Time (ms) <10ms
Capacity(kVA) 35~400kVA
Output Current(A) 50~600A
Protection Mode Overcurrent, overheat, Open-phase, Error-phase Switch
Switching Frequency 20kHz
Basic Information
Brand : Wanlida
Model : WLD-APF
Physical Specification
Size or Volume : Depending On Specification
Weight : Depending On Specification
Other Specification : AHF Technical Principle
Active Harmonic Filter (APF/AHF) Is New Power Electronic Equipment Which Can Dynamically Filter Harmonic With Variable Amplitude And Frequency And Compensate Reactive Power, It Overcome The Shortages Of Conventional LC Filter And Obtained The Better Compensation Performances Than Passive Filter.
The Right Diagram Is Schematic Diagram Of Active Harmonic Filter (APF/AHF), Where, Vs Is AC Power Supply, Nonlinear Load Is Harmonic Source, It Generates Harmonic And Consumes Reactive Power. AHF System Is Composed Of Instruction Current Operational Circuit And Compensation Current Generation Circuit, The Instruction Current Operational Circuit Is Mainly To Detect Current Components In Harmonic Current And Reactive Power Of Compensation Object, And The Compensation Current Generation Circuit Generates Equivalent Compensation Current With Same Amplitude And Inverse Polarity With Harmonic Current To Filter Harmonics According To Instruction Signal, The Main Circuit Adopts PWM Converter.
AHF Technical Features
Can Filter All Kinds Of Harmonic Currents
Filtering Capability >95% For Aimed Harmonic
Traction Level IGBT Module, 20KHz Switching Frequency
Response Time <10ms
Single Capacity Up To 300A
Suppress Three-phase Unbalance
Conform To IEEE Std. 519-1992, GB/T 14549
Can Be Used As Harmonic Source
Apply Closed-loop Control, And Ensure Filtering Accuracy
Can Set Filtering Mode And Select Harmonic Filtering Type
Adapt Automatically To Impedance Change Of Power Network
Can Connect 690V System(CE/C-tick) And 600V System(cUL) Directly
Parallel Connection, Easy For Filtering Capacity Expansion
Modularized Design, Easy For Maintenance
Perfect Protection Functions
Faults Record And History Inquire
Support Multiple Communication Protocols
