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Posted: 2021-07-2909:51 PM
Dear Pak Muntaha
dari sisi penempatan lokasi nya Isolation transformer di UPS 4 posisi, Di input, Bypass, Output dan Inverter.
Isolation transformer pada system UPS tidak wajib menggunakan isolation transformer kecuali ada kebutuhan 4 hal dibawah ini
1. Isolation of the output neutral from the source 2. Voltage change (for example, 480V to 208V) 3. Impedance that limits fault current or acts as a noise filter 4. Blocking the 3rd, 9th, 15th, and other multiples-of-three harmonic currents
point no 3 dan 4 sudah tidak di butuhkan jika menggunakan UPS,
point 2 tidak dibutuhkan jika tidak diperlukan perubahan tegangan
point 1 tidak dibutuhkan jika jalur neutral dari system sudah bagus
ideal system untuk memperbaiki masalah neutral adalah pasang Trafo isolasi di Output UPS.
untuk lebih detail fungsi dan penjelasan Isolation transformer pada system UPS bisa di baca di artikel dibawah