Câu 13: CDCS: Certified Data Centre Specialist
Management has requested for a 15 minutes battery bank assuming full load on the UPS. The UPS vendor has provided the following specifications of the UPS:- Rated power: 30 kVA- Rectifier input voltage: 400 V/3 phase- Rectifier input power factor: 0.8- Battery rated voltage: 384 V- Number of cells: 192- End of discharg…
Nội dung câu hỏi
Management has requested for a 15 minutes battery bank assuming full load on the UPS. The UPS vendor has provided the following specifications of the UPS:- Rated power: 30 kVA- Rectifier input voltage: 400 V/3 phase- Rectifier input power factor: 0.8- Battery rated voltage: 384 V- Number of cells: 192- End of discharge voltage: 308 V- Inverter output voltage: 400 V/3 phase- Inverter output power factor: 0.8What information is missing to perform the battery calculation?
Các lựa chọn
Đáp án được giữ gọn theo nhãn A, B, C, D trong phần bình chọn tương tác.
- A. UPS efficiency — đáp án hiện tại
- B. Inverter efficiency
- C. Load imbalance on the phases
- D. Available battery charging current
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