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Digital Energy™ LP Series
5.4.3 Deep Battery Test
The runtime as shown on the LCD screen is calculated, and the value is initially based on the capacity of new batteries. As batteries age, their capacity deteriorates, and as a result the initial battery capacity may be too unreliable for a proper runtime prediction. The UPS is able to keep track of the aging process, if a 'deep battery test' (battery calibration test) is executed regularly. During such a test the condition of the batteries is tested, and the result of the test is stored, and used by the UPS system for future runtime calculations.
We advise performing a deep battery test on a regular basis. For accuracy reasons the interval should depend on the number of discharges . With one discharge per month a 6 month interval is sufficient. If the discharge interval is shorter than once a week a monthly deep battery test is advised.
A deep battery test can be started only if the following conditions are met:
-The load should be more than 30% of nominal load
-The batteries should be fully charged (100% on screen)
-There are no alarms at the time the test is started.
Procedure:
From the standard menu first enter the service menu (press the 'down' and 'Enter/Reset' keys simultaneously for 2 seconds). Subsequently press the 'down' key until the following screen appears:
CALIBRATE BAT press DOWN+ENTER
Press the keys ‘down’ (2) + 'Enter/Reset' (3) simultaneously, for at least 1 second.
The following screen appears:
CALIBRATE BAT
TEST ACTIVATED
The test is executed, this may take a few minutes with standard battery and full load. Partial load and/or batt. extension packs can lengthen the test period considerably. Do not change the load during the test, i.e. do not switch off or on connected equipment!
The deep battery test discharges the batteries to 'battery low' alarm level (see section 5.3.2 'battery low'). Please note that immediately after a deep battery test the expected run time is very short: allow the UPS to recharge its batteries.
After the test the second line informs about the result:
TEST SUCCESFUL | = | The test has been completed successfully |
TEST FAILED | = | The test could not be executed properly: not all test conditions were fulfilled. |
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| The UPS system was not informed about the actual battery condition! |
LX: OPM_LPU_11U_5K0_10K_1US_V030 | 32 | GE DE LP 11U UPS: Installation / User Manual 3.0 (US) |