Dubas offers a wide range of active harmonic filters. These are DSP controlled equipments using IGBT as switching devices. The harmonic compensation is provided till the 40th harmonic with excellent dynamic response. These are ideal for all kinds of applications wherein high harmonic currents are present. Installation of adequately sized H-Filters can completely nullify the harmonic problems in the network. H-Filters are available for both 3 wire and 4 wire network. Networks with predominantly single phase based loads primarily in large computer installation sites, the neutral currents pose problems. H-Filters can be installed to compensate harmonics in the entire network or specific load depending on the point of connection.
The system also balances the three phase currents and improves the input power factor.A group of H-Filters (equal or unequal ratings) can be connected in parallel to meet the adequate rating demands as well progressive demands through time.
SALIENT FEATURES
Fully DSP controlled digital systems, compensation is done within 10 to 20 msec
(< 1 cycle). Fully dynamic systems providing compensation monitoring the
harmonic currents through every cycle, thus providing true filtering of harmonics.
Highly reliable and advanced IGBT based PWM technology.
Capable of eliminating harmonics upto 40th order.
Can be programmed to counter specified harmonics.
Generally suggested to install near the distortion creating specific loads, to
nullify the harmonics generated by such loads (ex. Variable speed drives,
rectifiers, switch mode power systems or other kinds of electronic system
loads).
Systems are easily parallelable with unequal ratings. System can be upgraded
as the load grows by simply adding additional modules.
Three phases currents in the network also gets balanced to a large extent by H-
Filter introduction.
Excellent inbuilt processor based monitoring and control display with scrolling
facility for display and monitoring of all essential parameters.
Remote monitoring by RS 232 computer interface.
Product Range
Panels of 30Amps/ 60Amps/ 120Amps parallelable to adequate capacity
