Alpha Technologies Cordex CXCRF 48-300W - Manual (Page 43)

0300072-J0 RevA Page 39 of 46
4.4.3.2 B
ATTERY
T
EST
NOTE:
The Battery License is required to perform a full battery test.
The battery test starts when:
• the time period between two automatic tests is reached (see Comp@s user manual for more details)
OR
• the “BATT TEST” button is pressed for a period of more than 5 seconds.
During the test, the green “LVD ON” LED flashes.
The battery test cannot start when:
• an alarm is present
• the batteries are charging or discharging
• the mains is absent
NOTE:
The delay between two tests is set as 180 days. It starts:
• after an automatic test
• after each manual test
• after stopping a manual test
• when the MCU is inserted into the shelf
• each time the whole system, including the MCU, is switched ON
When the test is started (manually or automatically after 180 days), all installed rectifiers are set to deliver a low
output voltage (lower than the battery voltage). The batteries are discharged at a fixed current which can be set
by the user. The difference between the load current and the battery current is supplied by the rectifiers (the
rectifiers keep the battery discharge current stable in case of load variations during the test). The discharge
current and the battery voltage are measured and integrated. As the battery discharging current is always the
same, the discharge curves from different discharge tests can easily be compared.
The battery test terminates when:
• the programmed power (30% to 50% of the nominal battery Ah value) is extracted before the end
voltage (44V or 46V)
• the end voltage is reached
OR
• the “BATT TEST” button is pressed.
The batteries are discharged until 30% (user settable) of their nominal capacity has been extracted. The nominal
capacity of the batteries is a variable set by the user via Comp@s. The battery test settings can be modified via
the dedicated Comp@s page, as shown in Figure 35 .