d.
Only approved digital voltmeters shall be used in monitoring the
cells. Digital volt meters shall provide a minimum of .01 volt
resolution.
[3.3.4
Battery Charging Instructions
**************************************************************************
NOTE: This paragraph is applicable to the lead
calcium alloy type battery. Delete if sealed (valve
regulated) battery is used.
**************************************************************************
Contracting Officer will coordinate the battery charging process with
Contractor and UPS technical representative. UPS technical representative
will instruct the Contractor on adjusting the rectifier voltage as required
by the procedure. Battery charging is the Contractor's responsibility.
Contractor shall provide the manpower, including an authorized
representative of the battery manufacturer, and equipment necessary to
continuously monitor and control the battery charging process.
a.
The minimum charge required by each cell is [_____] Ampere-Hours.
The maximum charge current is [_____] Amps.
Therefore, the absolute minimum charging time is [_____]
Continuous Hours.
Overtime will be required!
b.
Provide temporary cables required for charging. This cable shall
be the same size as used for the tier-to-tier and rack-to-rack
connections. Coordinate the charging configuration of the battery
with the battery manufacturer's representative and UPS technical
representative.
c.
Prior to the actual start of the activation charge, pilot cells
shall be designated by the Battery manufacturer's representative.
Pilot cells will be designated to obtain an average mean of the
battery. A minimum of 19 cells within the battery will be
designated as pilot cells. If, by feeling cell jars during
charging, warmer cells are noted, they shall be made pilot cells
also.
d.
Technical direction on the actual activation charging cycle will
be provided by the UPS and Battery manufacturer's representatives.
This direction includes but is not limited to analysis of
individual and pilot cell data, adjusting the UPS rectifier output
voltage and current, the removal of electrolyte and addition of
distilled water for the adjustment of the cell specific gravity
and ensuring the battery is charged to the minimum ampere
hour-rating. The UPS technical representative will also provide
the Contractor with a phone number where he can be contacted after
regular working hours should there by any problems with the UPS
during the charging period.
e.
Immediately before starting the activation charge, measure and
record the following:
(1)
Voltage of each cell.
SECTION 16262N
Page 15
Previous Page
