480v Passive Harmonic Filters- GridHawkTM Series

Partial Load Performance. On-board intelligence. Generator Compatible. IEEE-519

Product Overview

Excellent partial load performance
No capacitor maintenance
Simple wiring connections
Generator compatible
On-board intelligence
Meets IEEE-519

Non-linear loads such as variable frequency drives (VFDs) increase efficiency; however, they significantly pollute the power quality of the site and grid by introducing substantial harmonic current distortion (THD-i).

The addition of a CTM GridHawkTM; Passive Harmonic Filter reduces harmonic current distortion below 5%, ensuring compliance with IEEE-519 and protecting other on-site equipment. Furthermore, GridHawkTM; filters perform well under partial load conditions, are generator compatible, and do not require drive control of capacitor contactors (simply customer connections).

Typical Applications

Six-Pulse Rectifier (generator compatible)

Input Voltage / Frequency

480 V / 60 Hz

Current Range

70 - 640 A (contact CTM for liquid cooled to 1200A)

Maximum THD-i

<5% @ Full Load <8% @ 25% Load

Overload Capability

150% rated current for 1 minute

Maximum Ambient Temperature

50 °C (122 °F) (higher with de-rating)

Enclosure Options

Integrated Panel NEMA 3R Cabinet

Capacitor Contactors

100 - Contactor for capacitor disconnect (drive control required) 200 - Contactor for capacitor disconnect with automatic pick-up and drop-out (no drive connections required for control) 000 - No contactor

GridHawkTM Highlights

Excellent Partial Load Performance GridHawk passive harmonic filters not only meet IEEE-519 requirements under full load conditions, they also are designed for partial load performance, with THID levels maintained below 8% all the way down to 25% load. High-Reliability Capacitors CTM harmonic filters utilize high-reliability capacitors. Compared to the electrolytic capacitors used in competitors’ filters, CTM capacitors have higher capacitance stability with temperature, higher surge voltage ratings, and are low ESR for higher ripple current handling. Additionally, CTM capacitors are self-healing. All of these factors lead to boosts in system reliability and longevity. Meets IEEE-519 VFDs introduce harmonic current distortion on the grid that can cause problems for nearby equipment. The addition of a CTM harmonic filter reduces current distortion below 5% THID, meeting IEEE-519 requirements and eliminating nuisance tripping of the drive, nearby equipment, and circuit breakers. Simple Customer Connections (3 In / 3 Out) All fan power is derived internally, eliminating the need for customer-provided fan power. Additionally, with capacitor contactor option 200, control for capacitor contactors can be controlled within the filter, with automatic pick-up and drop-out. This feature greatly simplifies field installation, only requiring three input and three output power connections (temperature monitoring optional). Less connections minimizes the chance of improper installation, which has caused performance issues and failures in competitor filters.

  • IEEE-519 Compliance

  • Partial Load Performance

  • High-Reliability Capacitors

Non-linear loads such as variable frequency drives (VFDs) increase efficiency; however, they significantly pollute the power quality of the site and grid by introducing substantial harmonic current distortion (THID). The addition of a GridHawk harmonic filter reduces harmonic current distortion below 5%, ensuring compliance with IEEE-519 and protecting other on-site equipment. Furthermore, HPF filters perform well under partial load conditions, are generator compatible, and utilize high-reliability capacitors.

480v Passive Harmonic Filters- GridHawkTM Series