VLT® PHD-102 Preferred Harmonic Design

Dedicated HVAC Drive Solution

The VLT® PHD-102 Preferred Harmonic Design (PHD) is a full-featured, HVAC dedicated drive solution when conformance to IEEE-519 is required, even at the drive terminals. The PHD-102 has a number of functions developed to meet the diverse needs of HVAC applications and is the most practical solution to address growing harmonic concerns in the HVAC industry.

Meets the most stringent IEEE-519 levels down to 60% load at panel terminals.

• Delivers enhanced ThiD and Power Factor performance across the typical operating range
• Exceeds IEEE-519 THvD requirements

Product range

3 x 480 V . . . . . . . . . . . . . . . . . 1.5 – 600 HP
3 x 600 V . . . . . . . . . . . . . . . . . 1.5 – 650 HP
With 110% overload torque

Larger power sizes and alternate
enclosure ratings are available upon
request. Please consult factory.

Harmonic Performance 

• THID <5% above 60% load
• THVD <1.6% with <5% voltage line imbalance
• Cos Phi power factor = near unity
• Distortion power factor >.98 at loads >50%

Enclosure ratings 

• NEMA 1
• NEMA 12
• NEMA 3R

Wall mount units to 75 HP
Floor mount above 75 HP

Power options 

• Fused or Circuit Breaker Disconnect
• Non Bypass
• 3 Contactor Bypass
• Softstarter Bypass
• dV/dt output filters for motor insulation protection