Harmonix Active Harmonic Cancellation System Installation Manual
Harmonix is a 3-phase 4-wire active harmonic filter.
Harmonix eliminates 100A rms of zero-sequence current harmonics from the three phases and neutral conductor of a 3-phase 4-wire distribution system with a high density of non-linear electronic loads.
Fig. 1: 21"H x 24"W x 13"D, Floor Mount Stackable
THE FOLLOWING IS INTENDED FOR QUALIFIED ELECTRICAL PERSONNEL ONLY.
READ THE INSTALLATION INSTRUCTIONS COMPLETELY BEFORE BEGINNING INSTALLATION. PLEASE CONTACT THE MANUFACTURER, CURRENT TECHNOLOGY, WITH ANY QUESTIONS.
IT IS THE FINAL RESPONSIBILITY OF THE INSTALLING ELECTRICIAN TO ENSURE THAT ALL LOCAL CODES AND OTHER APPLICABLE SAFETY/ENVIRONMENTAL CONDITIONS ARE MET.
Enclosure/Environment: Current Technologys Harmonix Active Harmonics Cancellation System is housed in a NEMA Type 1 enclosure. The unit should be installed in a safe, protected area with ambient temperature between 0°C to +50°C (32°F to +132°F). The relative humidity should be 5-95% non-condensing.
Verify Voltages: Ensure that ALL voltages are correct and verify the type of power distribution configuration used (i.e., 3 Phase 120/208 grounded WYE) before installing the Harmonix. See Table 1 below for nominal voltages.
Note: All voltages should be within ± 10% of rated nominal voltage.
WARRANTY VOID IF CONNECTED TO IMPROPER VOLTAGE. CHECK SOURCE VOLTAGES BEFORE CONTINUING. CHECK NEUTRAL BOND AT DISTRIBUTION TRANSFORMER PROVIDING POWER TO PROTECTED LOADS AND NEUTRAL BOND AT SERVICE ENTRANCE TO VERIFY Xo BOND CONNECTION INTEGRITY.
Harmonix can either be bolted on the floor or it can be mounted on the wall (please see section on Mounting for details).
How to Connect the Harmonix Filter
Install Harmonix in parallel with the electrical distribution system. Connect Harmonix to the electrical distribution system via feed-through lugs in the panelboard or via a 3-pole, 60A (max), UL Listed, molded-case circuit breaker.
Safely perform the following power and control wire connections:Control Connections
Connect the two control wires provided by Current Technology from the neutral current monitoring transformer to Harmonix. Because Harmonix is a closed-loop control filter, it is critical to correctly install the neutral current monitoring transformer correctly in the panelboard (please see section on "Installation of Neutral Conductor CT" for details).
Table 2: Recommended Single Unit Wire Size
Table 3: Recommended Wire Size for Two Units in Parallel
Conduit Hole Location
Figures 24 show the three possible conduit entry locations. Select the location yielding the shortest possible conductor lengths. Punch the conduit hole for the conduit connector (maximum conduit diameter = 3.00") in the shaded areas shown in Figures 24. These locations ensure that external wiring will not interfere with internal components or require sharp bends. Do not use the hole provided in the top for conduit entry. This hole is reserved for stacking multiple Harmonix units in parallel.
Maximum Conduit Hole Size: 3" Diameter
Fig. 2: Side View (Left) Harmonix Filter
Fig. 3: Side View (Right), Harmonix Filter
Fig. 2: Top View, Harmonix Filter Electrical Connection
Install Harmonix in parallel with the electrical power distribution system via feed through lugs or a 3-pole, 60A (max), UL listed molded-case circuit breaker. After selecting the conduit entry location for Harmonix, establish an opening through the metal cabinet and run required length of the phase, neutral and ground wires through the conduit. NOTE: Also run the neutral current monitoring transformer wires through the conduit. Connect phases A, B, and C conductors to the phase terminal block, then connect the neutral conductor to the neutral terminal block mounted on the inner back wall of the filter (Figures 67) before connecting the ground wire to the equipment ground terminal. Connect the black wire of the neutral current monitoring transformer to the control terminal block, pin 7 and the white wire to pin 9 of the control terminal block (Figure 8 and Table 4).
Remote Monitor Contacts Option
Fig. 6: Internal View - Harmonix Filter
Conduit and Wire Entry from Left side of the Enclosure
Fig. 7: Internal View - Harmonix Filter
Conduit Entry from Right or Back Side of the Filter
Fig. 8: Control Terminal Block, Harmonix Filter
Connection to the Distribution Panel Board
Fig. 9: Installation of Neutral Current Monitoring
Current Transformer (Standard CT)
Fig. 10: Installation of Neutral Current Monitoring
Current Transformer (Split-Core CT)
Fig. 11: Installation of Harmonix Filter using Fed-Through Lugs
Fig. 12: Installation of Harmonix Filter using 60A UL Listed Breaker
Harmonix Control Panel
Figure 12 depicts the Harmonix control panel, while Table 5 describes various features of the control panel.
Harmonix Control Panel Indicators
This feature monitors total rms or harmonic current in the neutral conductor of a facility. When the METER switch is in the I-Harmonic or upward position, the neutral current meter displays total harmonic current in the neutral conductor. When the METER switch is in the I-Total or downward position, the meter displays the total rms current of the neutral conductor.
Harmonic Cancellation Current
This feature monitors Harmonix total rms and harmonic current injected. When the METER switch is in the I-Harmonic or upward position, the Harmonix meter displays the total harmonic current injected by the filter. When the METER switch is in the I-Total or downward position, the meter displays the total current (including fundamental) injected by Harmonix.
Fig. 14: Harmonix Filter Floor-Mount Installation
Fig. 15: Harmonix Filter Wall-Mount Installation Multiple Units in Parallel
Fig. 17: Control Terminal Block Connections of the First Unit
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