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Appendix
990-4050
Installation Guide APC Silcon 10-40kW 400V UPS 89
Notes:
1. Nominal input current based on rated load.
2. Maximum input current based on rated load + full battery recharge. Full battery recharge
assumed to increase input current with 10%.
3. Nominal power consumption (column 1c) based on nominal input current (1e) and the
corresponding input voltage (1a).
4. Maximum power consumption (1d) based on maximum input current (1f) and the corresponding
input voltage (1a).
5. Suggested input overcurrent protection (1h) based on continous full load maximum input current
(1f). MCCB breaker selection based on continous full load nominal input current (1e) is
acceptable, provided battery recharge time is short.
6. Fuses according to DIN LV HRC type gL, 500V assumed. MCCB load capacity must be 8xIn
(nominal current) for minimum 10ms.
7. Suggested load side overcurrent protection (3b) based on nominal output current (3a).
8. Nominal battery voltage assumed to be 2V/cell (Lead technologi).
9. Recommended cable sizes, see "External Connection" section of this guide.
CAUTION! Cable sizes must comply with national and/or local legal regulations.
10. Nominal battery discharge current (2c) based on full rated load and nominal battery
voltage (2V/cell).
11. Maximum battery discharge current (2d) based on full rated load and battery voltage at end of
discharge (1.7V/cell).
12. Full load discharge power from battery based on nominal battery discharge current
(2c) x nominal battery voltage (2x192cells x 2V/cell), or maximum battery discharge current
(2d) x battery voltage at end of discharge (2x192cells x 1.7 V/cell).
13. Heat dissipation based on nominal full load capacity and linear load.