Power quality assessments per IEEE 1159, voltage sag/swell analysis, harmonic distortion measurement, ITIC/CBEMA evaluation, and PQ monitoring system design.

What is an ITIC curve and why does it matter?

The ITIC (Information Technology Industry Council) curve defines the voltage envelope that IT equipment is designed to tolerate. Voltage events outside this envelope can cause equipment malfunction or damage. Plotting your PQ events on the ITIC curve shows whether your power quality is acceptable for sensitive equipment.

Key Deliverables

• Power quality monitoring system design
• 7-day or 30-day PQ measurement campaign
• Voltage sag/swell event analysis with ITIC/CBEMA curve overlay
• Harmonic spectrum analysis (IEEE 519 compliance check)
• Flicker assessment per IEC 61000-3-7

What does IEEE 519 require?

IEEE 519-2022 limits harmonic current distortion injected into the utility system at the Point of Common Coupling (PCC). The limits depend on your facility size relative to the utility (Isc/IL ratio). For most commercial facilities, individual harmonics must be below 5-12% and total harmonic distortion below 5-8%. Exceeding these limits can trigger utility penalties or interconnection issues.