
Section 4.0 Pre-installation Planning
HGA IOM
15
4.0 Pre-installation Planning
Verify the Application
HGA Ratings
Make sure that the HarmonicGuard
®
Active filter is correct for the application and sized for load.
The Voltage ratings of the HGA must match the input Voltage rating of the connected AC bus.
Seismic Compliance
TCI offers the seismic anchoring drawings for both wall and floor mounting Type 1 HGA filters to
meet compliance of a seismic value (Sds) equal to or less than 1.00. If the project location has a
higher seismic value, contact a representative at TCI for further assistance with new
documentation.
Product Description
The HarmonicGuard
®
Active filter is an active harmonic filter designed and developed by TCI to
relieve the power distribution system of the issues associated with harmonic currents that flow
within the power distribution network caused by non-linear loads. The typical configuration can be
found in Figure 1
The topology of the bus-applied (3-phase, three wire) HGA consists of major components or
modules:
Component 1
is made up of two current transformers (CTs) installed on phases A and C of the
AC bus that is to be acted upon by the filter. The purpose of the CTs are to supply information to
the HGA regarding the integrity of the composite AC bus current with regard to the distortion
(non-sinusoidal waveform) and displacement power factor relative to the AC bus Voltage. These
signals will result in the HGA injecting currents that will return the AC line current to near
sinusoidal shape and at unity power factor. Note, that the CTs are located outside the HGA
enclosure.
Component 2
is the HGA input circuit breaker (optional). This is provided to protect the HGA for
destructive over current conditions if a malfunction occurs within the HGA circuitry. It also
provides a convenient disconnect means and field wiring point for the installer of the filter
equipment.
Components 3 and 4
are the high frequency converter inductors. These inductors provide the
proper inductance to the power converter.
Component 5
is the power electronic converter module. The Power converter module (PCM) is
the heart of the HarmonicGuard
®
Active filter and is what differentiates the HGA from other types
of harmonic mitigation. The PCM provides several highly complex electronic functions controlled
by the on-board DSP controller. The PCM continuously senses the AC bus line Voltage and
currents, processes the information at “nearly real time” by means of the instructions resident
within the DSP program code, properly controls the six IGBT’s to operate in a safe manner that
injects current into the AC bus grid that ensures the AC bus current is sinusoidal and near unity
power factor. Power converter contains a pre-charge circuit, which consists of two SCRS and two
pre-charging resistances, which control the inrush current.
Содержание HGA HarmonicGuard Series
Страница 26: ...Section 4 0 Pre installation Planning HGA IOM 19 Figure 3 Altitude and Ambient Temperature Derating ...
Страница 40: ...Section 5 0 Installation Guidelines HGA IOM 33 Figure 11 HGA 480 V Two Unit Parallel Connection Diagram ...
Страница 42: ...Section 5 0 Installation Guidelines HGA IOM 35 Figure 12 HGA 480 V Three Wide Parallel Unit Connection Diagram ...
Страница 47: ...Section 5 0 Installation Guidelines HGA IOM 40 Figure 16 HGA 480 V Main Tie Main Connection Diagram ...
Страница 48: ...Section 5 0 Installation Guidelines HGA IOM 41 Figure 17 Current Transformer Diagram Round ...
Страница 49: ...Section 5 0 Installation Guidelines HGA IOM 42 Figure 18 Current Transformer Diagram Rectangular ...
Страница 76: ...Section 7 0 HMI Introduction HGA IOM 69 HMI Installation Diagram ...
Страница 138: ...Section 13 0 Appendix D DeviceNet Gateway Option HGA IOM 131 Figure 80 Ladder Diagram Observing HMI Status ...