DEFINING
EXCELLENCE
Independent Testing & Certification for Voltage Sag Performance & Efficiency
Ensuring Reliability
Enhancing Performance
Enabling Compliance
PERQ delivers independent, unbiased testing, validation, and certification of product performance under real-world electrical conditions. Backed by over 50 years of power quality expertise through EPRI’s renowned laboratories, PERQ evaluates how products perform across a range of demanding scenarios — including voltage sags, efficiency, ride-through resilience, and overall electrical robustness. Products are tested against rigorous and widely recognized standards such as IEEE 1668, IEC 61000-4-34, SEMI F47, ENERGY STAR, and other applicable industry benchmarks to ensure they meet the reliability and energy performance demands of today’s critical infrastructure and industrial environments.
- IEEE 1668
- IEC 61000-4-34
- SEMI F47
- Energy Star
- IEC 61000-4-11
- IEEE 1668
- IEC 61000-4-34
- SEMI F47
- Energy Star
- IEC 61000-4-11
- IEEE 1668
- IEC 61000-4-34
- SEMI F47
- Energy Star
- IEC 61000-4-11
Why Choose PERQ?
Independent & Objective
PERQ is fully independent — we don’t manufacture, resell, or market any products. Our sole focus is delivering accurate, unbiased testing and certification based on real-world performance.
This objective ensures manufacturers, regulators, and end users can trust that a PERQ-certified product has been validated without influence or conflict of interest.
We believe that raising the bar for power quality performance leads to better, more resilient end-use products across the board—industrial equipment, consumer electronics, and mission-critical infrastructure alike.
Built for Real-World Performance
We recreate actual power quality disturbances — voltage sags, interruptions, DC ripple, and dynamic loads — to evaluate how products perform in the field, not just in ideal lab conditions.
Standards-Aligned, Not Standards-Limited
We test to leading global benchmarks like IEEE 1668, IEC 61000-4-11/-34, and SEMI F47 — and go further when real-world conditions demand it.
Performance-Driven Efficiency Testing
We assess energy performance across full operating ranges, capturing part-load behavior and control interactions to reveal efficiency where it matters most.
Led by Engineers, Informed by Industry
Our team helped shape the power quality standards used today, and we’re pushing the envelope on what's next.
Evolving Scope, Product-Specific Insight
Sag and efficiency testing are just the beginning. Our roadmap includes tailored evaluations for ripple, harmonics, ride-through, surge, and emerging PQ concerns — all adapted to the unique challenges of each product type.
Our Services
Testing & Certification Services
Voltage Compliance Testing
Assess product performance against voltage disturbance standards.
We simulate AC voltage disturbances to evaluate a product’s ability to operate through dips, interruptions, and multi-phase events.
Standards
- IEEE 1668
- IEC 61000-4-11
- IEC 61000-4-34
- SEMI F47
Sag Types Covered
- Type I – Single-phase sags
- Type II – Symmetrical multi-phase sag
- Type III – Multi-phase with full phase loss
Each test is tailored to evaluate critical thresholds, fault recovery, control behavior, and ride-through response.
Efficiency Testing
Detailed energy efficiency analysis for conversion & management products (AC-DC, DC-DC, UPS).
We Measure
- Full-profile curve of efficiency
- Standby and idle consumption
Certification & Compliance Reports
Official certification supporting reliability, acceptance and marketability.
Technical Consultation
Expert guidance interpreting test results and improving product design decisions.
Customized Testing Solutions
Tailored evaluations adapted to industry-specific operational and power quality needs.
Additional Testing Capabilities
We continuously expand our testing capabilities to serve emerging market needs. If your product requires specialized power immunity testing, contact us to discuss your requirements.
Growth and Expansion
Since its inception, PERQ has evolved into a comprehensive program supporting multiple product categories including industrial power electronics, relays, contactors, motor drives, and uninterruptible Power Supply (UPS).
Industries We Serve
Semiconductor Equipment - Compliance with SEMI F47 for voltage sag immunity.
Power Electronics & Industrial Equipment - Testing power electronics, relays, and motor drives.
Manufacturing & Automation - Ensuring operational resilience in automated systems.
Medical & Healthcare Equipment - Compliance with electrical reliability standards for life-critical devices.
Renewable Energy & Grid-Tied Systems - Evaluating performance in fluctuating grid conditions.
What is Voltage Sag Compliance Testing?
Voltage sags are temporary reductions in voltage that can cause equipment failures, production downtime, and operational inefficiencies. PERQ's compliance testing helps manufacturers verify product resilience under real-world electrical disturbances to ensure reliability and regulatory compliance.
Testing Standards We Follow:
Ensuring compliance with these standards improves product marketability, enhances reliability, and minimizes unexpected operational failures.
Get Certified with PERQ!
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Electric Power Research Institute (EPRI)
3420 Hillview Ave.
Palo Alto, CA 94304