Shenzhen Sinexcel Electric Co., Ltd.
Main products:solar inverter
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  • Contact Person : Ms. A Rahile
  • Company Name : Shenzhen Sinexcel Electric Co., Ltd.
  • Tel : 86-755-86511588-8625
  • Fax : 86-755-86513100
  • Address : Guangdong,Shenzhen,Rm. 601, 602, 604 and 605, Room Type ABDE, 6/F, Bldg. D1, Research and Development Bldg., TCL Science Park, No. 1001, Zhongshanyuan Rd., Xili Liuxiandong, Nanshan Dist.
  • Country/Region : China

400V/50A Active Harmonic Filter

400V/50A Active Harmonic Filter
Product Detailed
Advanced modular design.Three-level topology.Compensate harmonic, reactive power, unbalanced load.Filtering efficiency>97%

 Active Harmonic Filter 


Optimize your harmonic filtering efficiency: the 3-Level Topology Design Approach


Active harmonic filters are based on power electronic technology, designed for mitigating harmonics injected by non-linear loads in power networks. Generally installed in parallel to the polluting loads, the active filters analyze the line current harmonics drawn by the loads and generates a compensation current at the opposite phase angle, thereby “neutralizing” the harmonic currents.


 Incorporating the 3-level topology design, Sinexcel active harmonic filters (AHF series) are the ideal, comprehensive solution, offering an optimal harmonic filtering efficiency, load balancing and reactive power compensation for applications of all types. Its compact high performance is testified by a track record of more than 120,000A installations.


 Key features


The Sinexcel Modular Active Harmonic Filter series are suitable for applications of all types, providing harmonic mitigation, load balancing and step-less reactive power compensation for inductive and capacitor loads.  


Optimized harmonics filtering efficiency


Selection of every harmonic to the 50th order /Filter up to 50 harmonics  simultaneously /Harmonic filtering levels [%] can be pre-configured for each harmonic order in specific/Resonance protection by means of pre-configuring harmonic filtering levels for the potential resonance zones/Harmonic attenuation > 97%


Compact high performance


Ultra-compact, space economical/User-friendly, ease of commissioning/Parallel capability of modular AHF units with respect to network requirements/Available in rack, wall mounting designs and complete enclosure type 


Enhanced Reliability Levels


Incorporates intelligent FFT calculation method 

Provides “real time sensing” of network impedance for progressive harmonics compensation to achieving system stability/ Advanced control algorithm for resonance protection/ In event of parallel resonance with load variations, the AHF is designed to assess and “shut-down” to avoid equipment damage 


Provide wide ranging protection modes:

Internal temperature diagnostic function to avoid overheating of internal components /internal short circuit /Overload protection/ CT reverse polarity and wrong configuration of CT settings


Segregated cooling design

Internal component groups are partitioned in 2 parts, i.e. circuit boards and heat producing elements. The former group will be of natural cooling and dust-protected whereas the latter group will include ventilation fan for effective heat dissipation.


Specification sheet



Sinexcel           025/035Sinexcel                       050/060Sinexcel                           100Sinexcel                                                                                   075/150/225/300
System parameters
Network Config.3P3W, 3P4W3P3W
Parallel operationUnlimited (up to 600A/cabinet c/w centralized monitoring                                                                                                                     PQ viewer, up to 300A for 690V series)
Mains voltage400 VAC, -43%~+14%690 VAC, -30%~+10%
Mains frequency45~63 Hz
CT Setting150/5 … 10,000/5
Filter characteristics
Topology design3-level
Rated compensation                     capacity25A/35 A50A/60A100A75A/150A/225A/300A
Neutral compensation capacity3 times ratingwithout neutral
Harmonics spectrum2nd~50th harmonic order
Harmonics selectable2nd~50th harmonic order, all can be selected simultaneously
Filtering degreeProgrammable per harmonic from 10% to 110%
Filter performanceTHDi <5%
Resonance ProtectionYes
Power loss<3% of rated power<2% of rated power
Switching frequency20 kHz18 kHz
Reaction time< 100 µs< 300 µs
Response time< 10 ms
Cooling air requirement270 m³/h544m³/h1080 m³/h2100 m³/h
Noise level< 54 dB< 56 dB< 58 dB<60 dB
Modes of OperationHarmonic compensation                                                                                                                                                                                                         (FFT analysis, instantaneous reactive power)
Reactive power compensation (Target PF from -1 ~ 1)
Load balancing
Communication Capability
InterfacesRS485 (Modbus RTU), TCP/IP (Ethernet)RS485 (Modbus RTU), TCP/IP (Ethernet), USB
Digital I/O4 digital inputs / 6 digital outputs
Alarm eventsYes
MonitoringVia centralized monitoring PQ viewer/PQ software (included)
Physical details
Mounting TypeWall / rackCabinet
Approx. dimensions (W*D*H), mm260x455x200440x590x200440x575x232800x600x2200
Approx. weight16 kg35 kg40 kg210~480 kg
Environmental conditions
Altitude1,500m/derating up to 4,000m, 1% / 100m
Ambient temperature-5°C~+45°C-10°C~+40°C
Relative humidityMax.< 95%, non-condensing
Protection classIP20
Reference technical standards
Design / ApprovalsIEC 61000-4-2, 4-3, 4-4, 4-5, 4-6, 4-8, 4-11, IEC 60146, EN 55011 Class A,                                               EN 50091-1, EN 50178
Compliance with StandardsIEEE 519, IEC 61000-3-6, ER G5/4
* Other ratings can be achieved by combining the appropriate AHF units, 
available in floor standing cabinet type c/w the PQ Viewer  
* For 3P4W config. 3 sets of CT are required (at L1, L2 and L3)  
For 3P3W config. 2 sets of CT are required (at L1 and L3)  




400V/50A Active Harmonic Filter

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