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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.
Содержание HarmonicGuard HGL Series
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