ANALISIS SISTEM GROUNDING DI BANDAR UDARA CAKRABHUWANA

Sistem grounding merupakan sistem proteksi dengan peranan penting menyalurkan arus gangguan ke bumi untuk menjamin keandalan instalasi kelistrikan serta keselamatan operasional di Bandar Udara Cakrabhuwana. Penelitian ini bertujuan menganalisis kelayakan sistem grounding berdasarkan Persyaratan Umum Instalasi Listrik (PUIL) 2020 dan SNI 03-7015-2004 melalui pengecekan kondisi fisik, pengukuran nilai resistansi menggunakan earth tester, serta tindakan evaluasi perbaikan pada titik yang tidak memenuhi standar. Penelitian menggunakan metode deskriptif kuantitatif dengan teknik pengumpulan data berupa observasi,
pengukuran langsung, dokumentasi, dan studi literatur. Hasil penelitian menunjukkan bahwa lima dari enam titik grounding memenuhi persyaratan PUIL 2020 dengan nilai resistansi ≤ 5 Ω, yaitu grounding penyalur petir sebesar 0,98 Ω, panel distribusi I sebesar 0,63 Ω, CCR sebesar 0,67 Ω, panel distribusi II sebesar 0,98 Ω, dan Main Power House sebesar 2,08 Ω. Salah satu titik grounding, yaitu grounding Precision Approach Path Indicator (PAPI) memiliki nilai resistansi sebesar 182,33 Ω akibat korosi batang elektroda dan kedalaman penanaman. Hasil penelitian menunjukkan bahwa penambahan zat aditif bentonit yang dikombinasikan perhitungan penyesuaian panjang batang elektroda dengan metode pararel (S > L), metode konfigurasi siku-siku, metode single grounding rod, dan metode pararel grounding dapat menurunkan nilai resistansi.

This study analyzes the feasibility of the grounding system at Cakrabhuwana Airport based on PUIL 2020 and SNI 03-7015-2004. Using a quantitative descriptive approach, data were obtained through observation, direct measurement with an earth tester, documentation, and literature review. The findings show that five of six grounding points comply with the PUIL 2020 requirement of a maximum resistance value of 5 Ω, including the lightning protection system (0.98 Ω),
Distribution Panel I (0.63 Ω), Constant Current Regulator (0.67 Ω), Distribution Panel II (0.98 Ω), and Main Power House (2.08 Ω). However, the PAPI grounding point exceeded the permitted limit, with a resistance value of 182.33 Ω, due to electrode corrosion and inadequate installation depth. The proposed improvement involves the addition of bentonite and the adjustment of electrode length using
single-rod, parallel, and right-angle grounding configurations. These methods are expected to reduce the grounding resistance and improve the system’s compliance
with applicable standards.