Electrical System Compliance for Building Function Worthiness Certificate (SLF): A Case Study of Pasar Semeru Mojokerto

Kelaikan Sistem Elektrikal dalam Pemeriksaan Sertifikat Laik Fungsi (SLF): Studi Kasus Pasar Semeru Mojokerto

Abstract

General Background Commercial structures require rigorous assessments of mechanical, electrical, and plumbing infrastructures to ensure operational safety and regulatory compliance. Specific Background Securing a Building Function Worthiness Certificate necessitates strict adherence to standards governing voltage supply, distribution networks, short-circuit protection, and grounding mechanisms. Knowledge Gap Many compliance reports fail to explicitly distinguish between contractual supply capacities and nominal transformer ratings, complicating accurate loading assessments when full-load testing is unavailable. Aims This study investigates the electrical readiness of a commercial market facility, strictly differentiating between physical transformer capacities and contractual limits to evaluate regulatory compliance. Results Evaluative analysis confirms an 88.10 percent ratio between the 555 kVA contractual supply and the 630 kVA transformer, identifying this as a contractual margin rather than an actual load percentage, due to the unavailability of test loads. Furthermore, grounding resistance across all measurement points, including a 1.48 Ω transformer reading, satisfied standard thresholds. Cable-breaker coordination across distribution points, particularly the 160 A breaker securing the pump sub-panel, demonstrated adequate protective margins. Novelty This research presents a quantitative evaluation framework that explicitly separates contractual power limits from physical equipment capabilities during certification inspections. Implications Confirming adequate protective coordination and compliant grounding secures function-worthy status, with final recommendations emphasizing explicit bonding on panel doors and continuous periodic installation monitoring.

Highlights:

• Evaluative analysis differentiates the 555 kVA contractual supply from the 630 kVA transformer rating, identifying an 88.10 percent contractual margin.

• Grounding resistance measurements across all nodes, including the primary transformer, satisfy recommended safety thresholds.

• Cable-breaker coordination across all distribution sub-panels demonstrates adequate protective margins, confirming overall function-worthy status.

Keywords: Protective Coordination, Contractual Capacity, Grounding Resistance, Function Worthiness, Certification Assessment