| Project Title | Industrial Switchboard Main Power Distribution |
| Location & Industry | Texas, USA | Heavy Industrial & Manufacturing Facility |
| Standards & Rating | UL 891 Deadfront Switchboards, NEMA Type 1 / 12, NEC Compliant |
| Technical Scope | 480V 3-Phase Main Incoming Service, Draw-Out Circuit Breakers, Smart Metering |
| Quality & Testing | High-Pot Dielectric Withstand Test, Primary Injection Testing & FAT Report |
A major industrial manufacturing plant in Texas required a robust, high-capacity main power distribution switchboard to handle heavy incoming electrical service. The system needed to provide centralized fault protection, seamless metering integration, and absolute compliance with UL 891 standards for safe operator interaction.
Compartmentalized Architecture: Designed with isolated vertical and horizontal busbar compartments to limit fault propagation, featuring heavy-gauge copper busbars plated for maximum conductivity and thermal stability.
Draw-Out Circuit Breakers: Equipped with high-interrupting-capacity draw-out type power circuit breakers and microprocessor-based trip units for precise fault discrimination and easy maintenance.
Safety & Operator Protection: Deadfront construction with hinged breaker compartment doors, Kirk key interlocks, and clearly labeled operator controls ensuring full compliance with NFPA 70E safety guidelines.
Prior to shipment, the switchboard underwent comprehensive Factory Acceptance Testing, including dielectric voltage withstand tests, mechanical operation checks of all draw-out mechanisms, and microprocessor trip curve verification. Complete certified test reports and as-built drawings were provided to ensure rapid site installation.