| 1. | APC Power Supply 990-1587 User Guide www apo oom User Manual English APC Smart UPS 500 VA 100 Vac 750 VA 100 120 230 Vac Tower Uninterruptible Power Supply 990 1587 11 2003 Introduction The APC Uninterruptible Power Supply UPS is designed to prevent blackouts brownouts sags and surges from |
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