Checking The Battery - AEG Protect 5.31 Series Operating Instructions Manual

12.3.3 Checking the Battery

i
Protect 5.31/xxx-480-220-120 10 kVA - 120 kVA
•
Activate the manual bypass via Q29 in accordance with Chapter 8
Disconnect the UPS in accordance with Chapter 8 and check the
following functions when restarting the system:
•
LEDs of the DOU
•
Correct start-up of the rectifier and the inverter
•
Functioning of the SBS control
•
Check the output voltages of the rectifier and the inverter as well
as of the SBS and the battery charging voltage.
The battery charge is checked automatically once a week.
If the UPS is out of operation for a prolonged period, maintenance-
free batteries, for example, must be recharged at three-monthly
intervals. Observe the instructions of the battery manufacturer!
Check the batteries in the battery compartment
CAUTION:
Acid fumes leaking from batteries in the battery compartment are
corrosive and can cause injury upon contact with the skin and
when inhaled.
The applicable protective measures must be observed in
accordance with the safety regulations of VDE 0510, Part 2.
If the electrolyte level of open batteries has dropped to the minimum
mark, the level must be topped up with distilled water in accordance
with DIN 43530, Part 4.
The battery must be kept clean and dry in order to prevent creepage
currents.
Only use pure water without additives for cleaning the plastic battery
components, especially the cell compartments.
The following values should be measured and recorded at three-
monthly intervals:
•
battery voltage,
•
voltage of block batteries, and
•
electrolyte temperature with open batteries.
The electrolyte density (only with open batteries) and voltage of all
block batteries must be measured and recorded annually. Screw
connections must be examined annually for tightness.
Checks must be carried out in accordance with DIN 43539 Part 1.
Special checks, e.g. in accordance with DIN VDE 0108, must also be
observed. Additional checks using automatic test equipment are not
permitted. These require the written approval of the battery
manufacturer.
NOTE:
If the battery voltage does not comply with the specifications and
the battery cannot be recharged satisfactorily, please contact the
AEG service department.
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