HarmonicShield
®
Options
18
HSD IOM Manual - Rev. D
Standard Option (S)
The Standard Option includes high quality harmonic grade capacitors and a line reactor. This filter will
meet the majority of application requirements found today. This cost effective product is available in a
floor mounted, indoor/outdoor UL Type 1 or Type 3R enclosure. This design is perfect for applications
where floor space is at a premium. The UL Type 3R enclosure protects the filter from harsh conditions.
Product Description
Standard
The HSD is a drive-applied harmonic filter designed and developed by TCI to reduce the harmonic
currents drawn from the power source by VFDs. The published HSD voltage, Power (Hp or kW) and
current ratings apply to matching power (Hp or kW) rated standard VFDs with six-pulse diode bridge
rectifiers. The HSD may also be sized to filter other loads such as SCR six-step drives, SCR Direct
Current (DC) motor drives, thyristor furnaces, battery chargers, electroplating supplies or other types of
non linear loads. In many cases the filter power rating (Hp or kW) will differ from load power rating
(Hp or kW). Please contact TCI Technical Support for additional information and support on sizing HSD
harmonic filters for your non six-pulse diode front end VFD applications.
The HSD harmonic filter is a passive filter connected in series with the input terminals of a VFD or
several VFDs that operate as a group. It is designed to provide a low impedance path for the major
harmonic currents demanded by the VFD. The filter is a stand-alone device that can be furnished in its
own enclosure and mounted adjacent to the VFD.
The HSD Standard Option consists of the following standard features and components:
•
A KDR tuned series reactor.
•
A TCI 3-phase tuning reactor specifically designed for the HSD filter.
•
High-endurance, harmonic-rated capacitors.
•
Bleeder resistors to ensure safe capacitor discharge upon filter shutdown, located on
capacitors.
