SMA Energy System Business

The UL 3741 PV Hazard Control Solution

UL 3741 PV Hazard Control Solution

For the past 40 years, SMA has led the way with innovative solutions and groundbreaking technology in the renewable energy industry. Today, SMA is proud to offer the first-to-market UL 3741 solution together with three premier racking partners. It is time to say goodbye to additional DC connectors and module-level devices and the risk they introduce, and say hello to a powerful combination that is both UL 3741 and NEC 690.12 compliant.

Example UL 3741 system layout

What is UL 3741?

Underwriters Laboratory (UL)3741 addresses safety processes and principles for evaluating, and recognizing compliance for, rapid-shutdown PV arrays that protect firefighters from shock hazards on rooftops with solar panels.

To achieve UL 3741 certification, products must pass a series of tests designed to simulate situations firefighters may encounter on a solar rooftop. The testing analyzes what happens when first responders fall on damaged solar panels while wearing typical protective gear.

About the SMA Sunny Tripower CORE1

The Sunny Tripower CORE1 offers an intelligent IV curve diagnostic, advanced string monitoring and SMA Smart Connected proactive monitoring and service support. As the world’s first free-standing PV inverter for use with commercial rooftops, carports, ground mount, and repowering legacy solar projects, the Sunny Tripower CORE1 delivers logistical, labor and service cost reductions.

Why is this important?

As a solar industry leader, SMA is dedicated to enhanced measures, regulation and protocols that ensure and encourage the adoption of safe, sustainable energy systems and processes. The goal of UL 3741 is to make rooftop arrays safer for firefighters in an emergency while creating a more consistent standard for installation methods and requirements.

SMA Sunny Tripower CORE1

The SMA Sunny Tripower CORE1 inverter is part of the first system to market with approved compliance of rapid shutdown for buildings without module-level power electronics or switches. This design makes for an inherently simpler, more cost-effective option that is easier to install, commission, operate and own.

CORE1 Benefits at a Glance:

No additional DC connectors or module-level devices needed, offering more reliability and safety
Reduce balance of system costs by $.07 - .09 per watt
A more reliable design with the highest system uptime
Virtually eliminate connector mismatch
Reduce voltage drop energy losses
Minimize lifetime of service risk and additional O&M costs
Less electronic waste