UL 1741 SB
Advanced Inverter TestingProvides the certification test framework for advanced inverter functions, including voltage and frequency ride-through, Volt-VAR control and Volt-Watt response.
WidenEdge MGC models covered by the SGS certificates have passed evaluation for UL 1741 SB, IEEE 1547 and California CSIP V2.1 compliance, providing verified grid-support capabilities for North American microgrid projects.
Explore the CertificationsTogether, UL 1741 SB, IEEE 1547 and California CSIP V2.1 address three essential aspects of North American deployment: advanced inverter performance, grid interconnection and utility communications.
Provides the certification test framework for advanced inverter functions, including voltage and frequency ride-through, Volt-VAR control and Volt-Watt response.
Defines how distributed energy resources interconnect with and respond to electric power systems under changing grid conditions.
Defines smart inverter communication requirements used under California Rule 21, supporting standardized data exchange with aggregators and utilities.
These certifications give developers and integrators clearer technical evidence for equipment selection, system design and interconnection preparation.
Verified grid-support functions provide documented technical evidence for project design and utility discussions, helping reduce uncertainty during early interconnection planning.
01A unified compliance framework helps project teams identify applicable requirements earlier, reducing the risk of avoidable changes during system design, utility review and commissioning.
02California CSIP V2.1-compliant communications help microgrid solutions address California Rule 21 requirements and coordinate with aggregators and utility platforms.
03
High-protection design supports reliable operation in islanded, dusty and other demanding environments.

VSG and droop control enable seamless grid-following and grid-forming transitions, while fast response helps manage sudden load changes.

High overload capability, independent phase regulation and 100% unbalanced-load support in off-grid mode accommodate demanding three-phase loads.

Automatic generator control and parameter self-learning simplify diesel-storage microgrid operation.
WidenEdge gives EPC contractors, system integrators and project developers access to specialized technology, engineering support and manufacturing capabilities for microgrid deployment.
Specialized SiC inverter and grid-forming power conversion technology supports weak-grid, off-grid and renewable-energy microgrid applications.
Product selection, system architecture, integration and after-sales support help partners move projects from planning to operation.
Integrated R&D, manufacturing and technical service improve coordination from technical requirements through product delivery.
More than 25 patents and applications, together with ISO 9001, ISO 14001 and ISO 45001 certifications, support consistent development and manufacturing.
Not automatically. The battery’s DC voltage range, current limits, charging and discharging requirements, BMS protocol and protection logic must be compatible with the selected MGC configuration. Compatibility should be reviewed before equipment procurement and commissioning.
California CSIP V2.1 defines a common IEEE 2030.5 implementation profile, but individual utilities may require different grid profiles, control functions, communication parameters and commissioning procedures. The applicable utility requirements should be confirmed for each project.
Prepare the project location and utility, single-line diagram, interconnection voltage, required power, battery DC range, BMS protocol, operating modes and major connected assets. Information about solar, diesel generators, critical loads and the required utility grid profile will support a more accurate configuration review.
Share your project location, utility requirements, system voltage, power demand, battery and BMS information with our team. We will help review the appropriate MGC configuration and supporting certification documents for your project.