Brochure

14
active tracking filtering with surge PrOtectiOn
STF SERIES
Low voltage/high frequency noise is caused by everyday events
such as turning on machinery, motors, or equipment. Although
noise is less dramatic than high voltage transients, the long
term eects of these frequent disturbances can be as damaging.
Filtering systems such as SolaHD Active Tracking
®
Filters provide
clean AC power by eliminating lower voltage noise.
e SolaHD STF Series oers the original active tracking
technology to guard against commonly occurring but very
damaging, lower energy transients. Oering excellent noise
reduction, the lter continuously tracks the input AC power line
and responds instantly upon detecting extraneous high frequency
noise.
e STF Series eliminates low voltage/high frequency noise via a
low-pass or L-C lter. ese lters are used for low energy, high
frequency noise reduction and consist of a series of inductors,
capacitors and resistors. STFs are load dependent which means
that the series inductors located on each phase and neutral
conductors are sized to handle the maximum current draw
on the line. ese inductors together with the capacitors and
resistors form a circuit capable of absorbing a large bandwidth of
noise.
ese devices are designed to meet UL 1283, and CSA C22.2
No. 8 for Electromagnetic Interference Filters. STFs attenuate or
reduce the amplitude of noise to a minimum of 40dB that occurs
in a frequency range of 50 KHz to 50 MHz. ey also provide
the industry’s best IEEE Category “A” protection, typically
reducing normal mode transients to +/- 5 volts.
Built to meet your unique requirements, these lters are available
in a multitude of voltage congurations. ey are hardwired and
designed for years of trouble free operation requiring little or no
operator intervention after installation.
Active Tracking
®
Filters are one part of a total power quality
solution. ey can be used alone or in conjunction with
other SolaHD products to solve more complex power quality
problems.
Applications
• Branch and Control Panels
• Factory Automation Installations
• Point of Use Industrial Service Equipment
• Dedicated Industrial and Machine Tools Equipment
• Telecommunications Equipment
Features
• Non degrading, series lter technology for
total durability
• High frequency noise lter, RLC low-pass lter
• ree phase applications up to 200 Amp
• Attenuates noise to 40 dB in frequency range
of 50 kHz to 50 MHz
• Operating temperature from -40°C to +45°C.
• Hardwired connection
• MTBF greater than 100,000 hours, Mil Std. 217F
• Ten year limited warranty
E311348