TCi HarmonicGuard Series, Инструкция по установке, эксплуатации и обслуживанию

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HGL IOM Manual - Rev. B 19
HarmonicGuard
®
Low Capacitance
Contactor Option (C)
Contactor Option (C)
The contactor option shall allow the user to open and close a contact that will remove the capacitors from
the circuit. Operation shall be controlled through a contact input on the customer’s equipment.
The Contactor Option includes a contactor, control power transformer and connection terminals in the
filter circuit which allows the VFD user to control the insertion of this circuit through the use of a relay
contact in the VFD. It is recommended that the VFD contact be programmed to open the contactor below
33% motor power. For variable torque (fan) loads this will be approximately below 70% speed, so the
at-speed contact may be used. This reduces the possibility of leading power factor interacting with other
devices on the power system. Contactor logic should also maintain the contactor closed in cases where
the VFD is bypassed and the filter is not bypassed.
Product Description
HGL C Option Filter
The HGL 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 HGL 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 HGL 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 HGL
harmonic filters for your non six-pulse diode front end VFD applications.
The HGL 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. It is also available on an open panel for mounting
within an enclosure with the VFD or other equipment.
The HGL Contactor Option consists of the following standard features and components:
• A KDR tuned series reactor.
•
A TCI 3-phase tuning reactor specifically designed for the HGL filter.
• High-endurance, harmonic-rated capacitors.
• Bleeder resistors to ensure safe capacitor discharge upon filter shutdown, located on
capacitors.
• Filter enable/disable contactor with protection and drive interlock provisions.
•
Cooling fans (on select models) to ensure adequate cooling and safe operating
temperatures.
• Control power transformer
•
Compression terminals for ease and integrity of all power and control wiring.
• Fuses