APC BK600EI - Manual (Page 12)

Page 10
should be recharged before conducting the following Test for proper operation (section
3.7) and to ensure that the UPS will provide expected run time. The UPS may be used
immediately upon receipt, but may not provide expected run time in the event of a utility
failure. The battery will recharge to full capacity within 6 hours when the UPS is plugged
in and switched on. Once the battery has obtained a full charge, the UPS will maintain the
charge as long as the UPS is plugged in, regardless of the position of the power
I/0 switch.
3.6 Connecting Your Equipment to the UPS
To ensure that your computer equipment will be protected during a utility failure and that
you receive expected run time, it is important that you determine the total power needs
of the equipment you wish to protect with the UPS. The power requirements of your
equipment should be less than or equal to the capacity of the UPS. The capacity rating of
the UPS, in both Volt-Amperes (VA) and Watts (W), is given in the Specifications section
of this manual.
The power demands of your equipment can be read from the Run Time Verses Load
(section 9.0) chart or may be deduced from the equipment name plates. The Run Time
Versus Load chart gives equipment power requirements (load) in VA for computer
systems common in the office environment today. If your equipment is not listed in the
chart, the following instructions will help you to determine their power needs.
3.6.1 Computer equipment manufacturers must provide a load rating for their products.
Usually, the rating is written on a name plate or label near the line cord. The rating may
be given in units of Amps (A or Amax), Volt-Amperes (VA) or Watts (W). Jot down the
load rating of all the equipment you wish to protect.
3.6.2 All noted load ratings should be converted to Volt-Amperes (VA) so that all
equipment power requirements can be added using the same units of measure.
3.6.3 If load ratings are given in Watts (W), convert to an estimate of power requirements
in VA by multiplying the value in Watts by 1.4.
3.6.4 If load ratings are given in Amps (A or Amax), convert to an estimate of power
requirements in VA by multiplying the value in Amps by 230. Unfortunately, many
computer manufacturers overrate the power requirements of their equipment in order to
be conservative and to cover the extra power demand of user added expansion boards. If
the VA requirement that you have computed seems high or is already greater than the