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IEEE 1668, SEMI F47, and PQCanvass: A Practical Guide to Voltage Sag
This white paper explains the challenges of voltage sags—short-duration reductions in supply voltage that can trigger shutdowns, malfunctions, and costly downtime. By aligning with IEEE Std 1668-2017 and SEMI F47-0706, manufacturers, utilities, and engineers gain clear guidelines for testing, compliance, and resilience. Power Monitors’ PQCanvass platform extends these standards into practice with built-in analytics that classify sag events, assess compliance, and reveal whether problems originate upstream or from customer loads.
Key topics include:
- A review of IEEE Std 1668-2017 testing protocols for sag and ride-through performance
- A review SEMI F47-0706 requirements for semiconductor equipment resilience
- How sag classification by magnitude, duration, and angle reveals equipment vulnerabilities
- Using PQCanvass analytics to identify non-compliance, differentiate supply vs. load-related sags, and evaluate mitigation strategies
- Practical reporting tools for compliance documentation and troubleshooting
Why utilities should care:
Voltage sags are one of the most disruptive power quality events—capable of halting production lines, damaging sensitive equipment, and escalating costs. By leveraging IEEE and SEMI standards alongside advanced analysis tools like PQCanvass, engineers can identify vulnerabilities, validate compliance, and deploy targeted solutions such as UPS systems, line sequencing, or upstream investigations. Proactive sag analysis safeguards reliability, improves uptime, and ensures equipment performance in today’s demanding industrial and semiconductor environments.
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