Switchgear Assembly Testing & Certification Services

IEC 61439 is an international standard for low-voltage switchgear and controlgear assemblies. It covers design verification, construction requirements, temperature rise, dielectric properties, short-circuit strength, and protection against electric shock. For buyers and engineers, it provides a framework for confirming that an assembly has been designed and tested for safe, reliable operation under defined conditions.

IEC 62271 is a standards series for high-voltage switchgear and controlgear. It addresses performance, insulation, switching duties, testing, and safety requirements for equipment used in medium- and high-voltage applications. When evaluating a project, this standard helps define how equipment should perform under electrical stress, fault conditions, and normal operating environments.

Switchgear assembly testing typically includes visual inspection, mechanical checks, wiring verification, labeling review, and confirmation that components match approved drawings and ratings. Depending on the assembly, testing may also involve insulation resistance, continuity, control circuit verification, and functional checks. The goal is to confirm the equipment is properly assembled, documented, and ready for approval, shipment, or installation.

Certification helps demonstrate that a switchgear assembly meets recognized safety and construction requirements. It supports smoother submittal review, reduces questions during inspection, and lowers the risk of field rework. For commercial, industrial, and utility projects, certified assemblies also provide greater confidence that the equipment has been built to consistent standards for performance, protection, and long-term reliability.

Yes. UL 891 is a key standard for dead-front low-voltage switchboards and is highly relevant when evaluating low-voltage switchgear assemblies. It addresses construction, spacing, bus systems, short-circuit considerations, and overall safety requirements. DEI Power’s experience with UL 891-certified low-voltage switchgear helps support customers who need compliant equipment, accurate documentation, and dependable project coordination.

Yes. DEI Power supports custom configurations based on project layout, voltage, enclosure type, ratings, and installation requirements. Engineering support helps align the assembly with specifications before production or release, which can reduce change orders and field adjustments. This is especially valuable for facilities with critical loads, unique site conditions, or strict documentation and approval requirements.

Timing depends on project scope, assembly complexity, and documentation requirements, but DEI Power is structured to support fast-moving projects. With in-house engineering, manufacturing capabilities, and fulfillment operations in Ontario, California, the team can respond quickly to specification reviews, compliance questions, and submittal needs. Many stocked orders also ship within one business day, with some requiring up to five business days.

These services are commonly used by contractors, consulting engineers, facility teams, utilities, and procurement groups responsible for critical power systems. Typical applications include data centers, commercial campuses, industrial plants, healthcare facilities, and infrastructure projects. Testing and certification support is especially important where uptime, code compliance, coordinated protection, and approval-ready documentation are essential to project success.