Performance Guarantee
Select and install the appropriate HarmonicGuard
®
Low Capacitance Harmonic
Filter in a variable torque, variable frequency AC drive application, within our
published technical specifications and we guarantee that the input current
distortion will be less than or equal to 5% THID for standard HGL Series filters
at full load. If a properly sized and 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 and other phase controlled rectifiers, but actual
THID levels can vary by load and/or speed and therefore cannot be guaranteed.
Consult factory for assistance when applying HGL 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 5% AC line reactance at full load and a 5% source impedance.
NOTE: The presence of background voltage distortion will cause motors and
other linear loads to draw harmonic currents.
Additional harmonic currents may flow into the HGL filter if there is harmonic
voltage distortion already on the system.
Summary of Contents for HarmonicGuard Series
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