Electrical Motor

Materi yang dipelajari selama 120 menit :

Overview Pekerjaan Electrical di Konstruksi

• Ruang lingkup pekerjaan electrical di proyek Oil & Gas / Power Plant
• Perbedaan konstruksi vs pre-commissioning vs commissioning
• Jenis motor & equipment yang umum dipasang di proyek

Instalasi Motor & Equipment

• Cara membaca nameplate & memahami rating motor
• Tata cara pemasangan motor di field (mounting, alignment, earthing)
• Cable routing: tray, conduit, pulling, penandaan kabel
• Termination di motor junction box + best practice di lapangan
• Mechanical completion & checklist pemasangan motor

Cable Testing & Electrical Pre-Commissioning

• IR Test / Megger Test
• Continuity & polarity test
• Torqueing & visual inspection (QC)
• Earthing test untuk motor & peralatan
• Pembuatan ITR & dokumentasi sederhana

Loop Checking Motor

• Apa itu loop electrical untuk motor (start–stop–trip–feedback)
• Membaca loop diagram & logika motor
• Proses loop check step-by-step:
1. Dari field → JB
2. JB → marshaling → MCC
3. MCC → DCS
• Simulasi & contoh kasus loop yang gagal (praktikal case)
• Troubleshooting umum: wrong termination, no signal, interlock error

Energization & Commissioning Motor

• Safety before energization (PTW, LOTO, isolation)
• Direction test (checking rotation)
• No-load test
• Full-load test + monitoring (current, temp, vibration)
• Protection check (OCR, GFR, NGR, thermal overload)

Real Case in Project & Best Practice

• Contoh temuan lapangan (cable overheating, wrong rotation, trip saat start)
• Tips komunikasi antara electrical–instrument–commissioning
• Cara menurunkan punch list dari A/B ke B/C saat mechanical completion

Q&A Session