Specifications

Performance Guarantee
Select & install the appropriate HarmonicGuard
®
Passive Harmonic Filter in a
variable torque, variable frequency AC drive application, within our published
technical specifications & we guarantee that the input current distortion will be
less than or equal to 5% THID for standard HGP Series filters at full load, and
less than 8% at 30% load. If a properly sized & installed filter fails to meet its
specified THID level, TCI will provide material for necessary modifications or
replacement filter at no charge.
HG filters can also provide similar performance in other drive applications
such as constant torque, DC drives & other phase controlled rectifiers, but
actual THID levels can vary by load and/or speed & therefore cannot be
guaranteed.
Consult factory for assistance when applying HGP filters on these types of
equipment.
MINIMUM SYSTEM REQUIREMENTS:
The guaranteed performance levels of this filter will be achieved when
the following system conditions are met:
Frequency: 60Hz ± 0.75Hz
System Voltage: Nominal System Voltage (line to line) ±10%
Balanced Line Voltage: Within 0.5%
Background Voltage Distortion: < 0.5% THVD
The input VFD current waveform shall be consistent with that of a VFD
with 3% AC line reactance at full load.
NOTE: The presence of background voltage distortion will cause motors &
other linear loads to draw harmonic currents.
Additional harmonic currents may flow into the HGP filter if there is harmonic
voltage distortion already on the system.
If higher levels of harmonic voltage distortion (2%-5%) are present, please
use the high background distortion version of the HGP filter.