Prosedur Testing & Commissioning Smelter Nikel RKEF — Standar Internasional
Testing commissioning smelter nikel RKEF (Rotary Kiln Electric Furnace) adalah proses yang sangat kompleks dan kritis. Setiap komponen sistem kelistrikan — dari incoming transformer 150kV, rectifier transformer berdaya besar, panel distribusi MV, hingga relay proteksi — harus diuji secara sistematis sebelum furnace dapat beroperasi komersial.
Checklist T&C Sistem Elektrikal Smelter RKEF
⚡ Incoming & Transformator
- ✓ Megger test belitan transformator (HV/LV)
- ✓ Ratio test (TTR) — rasio belitan aktual vs nameplate
- ✓ CT accuracy test — semua core metering & proteksi
- ✓ Differential relay commissioning — slope characteristic
- ✓ Oil BDV test — tegangan tembus minyak >40kV
- ✓ DGA (Dissolved Gas Analysis) baseline
🔌 Rectifier DC System
- ✓ Rectifier transformer ratio test per tap
- ✓ DC bus insulation test
- ✓ Thyristor firing angle test — full load simulation
- ✓ Overcurrent protection koordinasi DC bus
- ✓ Cooling system interlock verification
- ✓ No-load dan full-load commissioning furnace
🛡️ Relay Proteksi MV
- ✓ Setting & injection test semua relay ANSI 50/51/87
- ✓ Distance relay zone setting (ANSI 21)
- ✓ Busbar protection coordination study
- ✓ Trip circuit supervision test
- ✓ Intertrip komunikasi GOOSE IEC 61850
- ✓ Full functional test urutan proteksi end-to-end
📊 SCADA & Measurement
- ✓ Metering accuracy calibration — kelas 0.5S
- ✓ Power quality analyzer baseline
- ✓ SCADA I/O loop check — semua analog & digital point
- ✓ Alarm & event log verification
- ✓ HMI graphical display commissioning
- ✓ Data historian real-time trending
🔬 Peralatan Uji PT TEM — Milik Sendiri, Tidak Sewa
🔬
Omicron CMC 356
Relay injection test — semua standar IEC/ANSI
⚡
Omicron CPC 100
High current primary injection — CT test, CB timing
📐
CT Analyzer
Akurasi CT test — kelas 0.2S hingga 5P
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