{"id":684,"date":"2026-10-11T08:45:43","date_gmt":"2026-10-11T08:45:43","guid":{"rendered":"https:\/\/otomasiplcbandung.com\/?p=684"},"modified":"2026-10-11T10:10:13","modified_gmt":"2026-10-11T10:10:13","slug":"capacitor-bank","status":"publish","type":"post","link":"https:\/\/otomasiplcbandung.com\/?p=684","title":{"rendered":"CAPACITOR BANK"},"content":{"rendered":"\n

Di dunia pabrik atau industri yang dipenuhi banyak motor listrik besar, komponen ini wajib ada untuk memperbaiki Faktor Daya (Cos Phi \/ $\\cos \\phi$)<\/strong> agar perusahaan terhindar dari denda penalti akibat pemborosan daya (kVARh) dari PLN.<\/p>\n\n\n\n

Modul Teknis Lengkap: Cara Kerja, Fungsi, Kelistrikan 3 Phasa, dan Panduan Perbaikan Capacitor Bank Industri<\/strong>.<\/p>\n\n\n\n

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KELISTRIKAN 3 PHASA, & TROUBLESHOOTING CAPACITOR BANK INDUSTRI<\/h2>\n\n\n\n

\u26a0\ufe0f PERINGATAN KESELAMATAN KELAS INDUSTRI (SAFETY FIRST):<\/strong>
Kapasitor 3 Phasa menyimpan energi listrik tegangan tinggi dalam jumlah besar.<\/em>Meskipun breaker utama sudah dimatikan (OFF), kapasitor masih menyimpan setrum! SELALU tunggu minimal 5 menit agar resistor internal membuang muatan, lalu lakukan hubung singkat (discharge) antar terminal menggunakan kabel\/tongkat khusus berisolasi tebal ke bodi (ground) sebelum disentuh!<\/strong><\/p>\n\n\n\n

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BAB I: FUNGSI & PRINSIP CARA KERJA DI INDUSTRI<\/h2>\n\n\n\n

Pabrik menggunakan banyak mesin dengan kumparan kawat (motor listrik, trafo, mesin las). Komponen kumparan ini menghasilkan Beban Induktif<\/strong> yang menciptakan daya semu\/daya reaktif (kVAR). Daya reaktif yang terlalu tinggi membuat nilai Faktor Daya (Cos Phi) drop (misal di bawah 0.85). PLN akan memberikan denda penalti biaya kVARh<\/strong> jika ini terjadi.<\/p>\n\n\n\n

1. Fungsi Utama Capacitor Bank:<\/h2>\n\n\n\n
    \n
  • Memperbaiki Cos Phi:<\/strong> Memberikan beban kapasitif untuk menetralkan\/mengimbangi beban induktif dari mesin pabrik, sehingga nilai Cos Phi naik mendekati 0.95 – 0.98<\/strong> (Ideal).<\/li>\n\n\n\n
  • Menghemat Biaya Listrik:<\/strong> Menghilangkan tagihan denda kVARh dari PLN.<\/li>\n\n\n\n
  • Menjaga Stabilitas Tegangan:<\/strong> Mengurangi drop tegangan (voltage drop<\/em>) pada jaringan kabel internal pabrik dan mengurangi panas pada kabel utama.<\/li>\n<\/ul>\n\n\n\n

    2. Alur Urutan Kerja Otomatis (Sistem APFC):<\/h2>\n\n\n\n

    Sistem modern industri menggunakan panel APFC (Automatic Power Factor Controller)<\/strong>.<\/p>\n\n\n\n

      \n
    1. Monitoring:<\/strong> Modul APFC membaca arus dan tegangan 3 Phasa (R-S-T) melalui bantuan Current Transformer<\/em> (CT).<\/li>\n\n\n\n
    2. Kalkulasi:<\/strong> CPU menghitung nilai Cos Phi jaringan secara real-time<\/em>.<\/li>\n\n\n\n
    3. Eksekusi:<\/strong> Jika Cos Phi drop di bawah target (misal target 0.95), modul APFC akan mengirimkan setrum 220V ke kontaktor khusus kapasitor untuk menyalakan satu per satu step kapasitor bank (switching<\/em> bertahap) sampai nilai target tercapai.<\/li>\n<\/ol>\n\n\n\n
      \n\n\n\n

      BAB II: DAFTAR KOMPONEN UTAMA PANEL 3 PHASA<\/h2>\n\n\n\n
        \n
      1. Power Capacitor Unit 3 Phase:<\/strong> Tabung atau kotak kapasitor khusus berisi minyak\/gas pembawa sifat kapasitif, dirancang khusus untuk tegangan inter-fasa 380V – 415V AC.<\/li>\n\n\n\n
      2. Regulator APFC (Controller):<\/strong> Otak digital panel yang memantau Cos Phi dan mengatur kontaktor mana yang harus hidup (berisi pilihan 6, 12, hingga 24 step).<\/li>\n\n\n\n
      3. Capacitor Contactor (Kontaktor Khusus):<\/strong> Kontaktor yang dilengkapi dengan resistor peredam (damping resistors \/ pre-charge wires<\/em>)<\/strong> pada bagian atasnya. Gunanya untuk meredam lonjakan arus kejut yang sangat tinggi (inrush current<\/em>) saat kapasitor pertama kali dinyalakan.<\/li>\n\n\n\n
      4. De-tuned Reactor (Induktor \/ Koil Pelindung):<\/strong> Dipasang seri sebelum kapasitor di industri besar. Berfungsi menyaring gelombang harmonik agar kapasitor tidak meledak akibat distorsi frekuensi listrik.<\/li>\n\n\n\n
      5. Fuse HRC (High Rupturing Capacity):<\/strong> Sekring proteksi kecepatan tinggi untuk mengamankan jalur kabel 3 Phasa jika terjadi hubungan singkat pada tabung kapasitor.<\/li>\n<\/ol>\n\n\n\n
        \n\n\n\n

        BAB III: WIRING DIAGRAM SATU STEP 3 PHASA (R-S-T)<\/h2>\n\n\n\n

        Berikut adalah representasi jalur kelistrikan 3 Phasa untuk satu unit\/step Kapasitor Bank:<\/p>\n\n\n\n

              [ BUSBAR UTAMA 3 PHASA (R - S - T) ]\n            \u2502           \u2502           \u2502\n            \u25bc           \u25bc           \u25bc\n      [       FUSE HRC \/ MCCB 3 POLE     ]\n            \u2502           \u2502           \u2502\n            \u25bc           \u25bc           \u25bc\n      [  DE-TUNED REACTOR (PENGAMAN)     ]\n            \u2502           \u2502           \u2502\n            \u25bc           \u25bc           \u25bc\n      [ CAPACITOR CONTACTOR 3 POLE       ] <\u2500\u2500\u2500 Kontrol 220V dari APFC Regulator\n            \u2502           \u2502           \u2502\n            \u25bc           \u25bc           \u25bc\n      [ TERMINAL DELTA (\u0394) CAPACITOR 3P  ] (Koneksi Tabung R-S-T)\n<\/code><\/pre>\n\n\n\n
        \n\n\n\n
        BAB IV: PANDUAN PENGUJIAN & TROUBLESHOOTING KELAPANGAN<\/h2>\n\n\n\n
        Bahan ajar praktikum BLK\/Teknisi untuk mendeteksi kerusakan sistem 3 Phasa:<\/p>\n\n\n\n
        Gejala Masalah<\/th>Titik Kerusakan Komponen<\/th>Prosedur Solusi & Analisis Teknisi<\/th><\/tr>
        Tabung Kapasitor Kembung \/ Mengeluarkan Cairan\/Minyak<\/strong><\/td>Overheating<\/em> atau terkena Gelombang Harmonik.<\/td>1. Bahaya!<\/strong> Segera matikan breaker step tersebut.
        2. Lakukan discharge<\/em> manual, lalu ganti tabung kapasitor baru.
        3. Periksa apakah ventilasi panel\/kipas pendingin panel mati, karena kapasitor sangat sensitif terhadap panas ruangan.<\/td><\/tr>
        Nilai Cos Phi pada layar APFC tetap rendah meskipun semua step sudah menyala ON<\/strong><\/td>Tabung Kapasitor sudah drop kapasitasnya (Loss Capacitance<\/em>) atau salah pasang CT.<\/td>1. Uji Arus:<\/strong> Ukur arus masing-masing fasa (R-S-T) pada kabel kapasitor menggunakan Tang Ampere (Clamp Meter<\/em>). Jika fasa R = 20A, S = 20A, tapi T = 2A, berarti fasa T sudah mati\/kering di dalam.
        2. Cek kabel sensor CT arus; pastikan posisi pasang CT berada di jalur kabel utama sebelum masuk ke beban pabrik.<\/td><\/tr>
        Kontaktor sering trip<\/em> atau sekring HRC putus terus-menerus<\/strong><\/td>Terjadi hubungan singkat (short-circuit<\/em>) internal pada tabung kapasitor.<\/td>1. Lepas kabel dari terminal kapasitor.
        2. Gunakan multimeter skala Ohm tinggi atau Capacitance Meter<\/em>. Ukur antar terminal inter-fasa (R-S, S-T, T-R). Jika terbakar\/short, nilai Ohm akan mendekati 0. Kapasitor wajib diganti.<\/td><\/tr>
        Kontaktor bergetar sangat keras saat diperintah menyala (ON<\/em>)<\/strong><\/td>Kabel resistor peredam (Pre-charge wire<\/em>) atas kontaktor terputus atau rusak.<\/td>Ganti satu set kontaktor khusus kapasitor tersebut. Membiarkan kontaktor biasa (tanpa peredam) untuk kapasitor akan memperpendek umur tabung akibat hantaman inrush current<\/em>.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
        \n","protected":false},"excerpt":{"rendered":"
        Di dunia pabrik atau industri yang dipenuhi banyak motor listrik besar, komponen ini wajib ada untuk memperbaiki Faktor Daya (Cos […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4],"tags":[],"class_list":["post-684","post","type-post","status-publish","format-standard","hentry","category-deskripsi-kategori-logika-dasar-otomasi-selamat-da"],"_links":{"self":[{"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts\/684","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=684"}],"version-history":[{"count":1,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts\/684\/revisions"}],"predecessor-version":[{"id":685,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts\/684\/revisions\/685"}],"wp:attachment":[{"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=684"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=684"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}