Unity I UT3K Manuel D'utilisation page 19

Battery Test Parameters (Parameters 73-77)
During a battery test, the UPS shuts off the battery charger, waits two seconds, and checks the battery voltage. If
the UPS detects low battery voltage, it stops the test and starts a Check Battery alarm (A-04). If battery voltage is
not low, the UPS switches itself to battery power for a set length of time (parameter 75). If the UPS detects a
possible weak battery, it switches back to AC line power and starts a Check Battery alarm (A-04). You can tell the
UPS how often to test the batteries (parameter 74) and at what time of day (parameter 73). You can also program
the UPS to "test on demand" (parameter 77), which allows you to test the batteries on demand by pressing the front
panel keys. If you prefer, you can tell the UPS not to perform a periodic battery test (parameter 76). See
TEST
Sections 301 and 302 for more information on displaying and changing parameter settings.
Note: If the UPS microprocessor loses power (because, for example, the unit is switched off), the battery test
parameters will return to their factory default settings.
Table 5: Battery Test Parameters
Parameter Parameter
Number Name
P-73 Battery Test
Time
Battery Test
P-74
Interval
P-75 Battery Test
Length
P-76 First Day of
Battery Test
P-77 Test on
Demand
Password Level Sample
Required to Parameter
Change Setting Value
User 0.00
User
7
User 15
User 0.00
User 0
17
Parameter Description
The time of day (in 24-hour time) that the battery test
begins. Make sure that you also set the Time (parameter
89). Range of values: 00:00-23:59.
The number of days between battery tests. Range of
values: 1-28.
The length of time that the UPS runs on battery power
during the battery test, expressed as a percentage of the
Low Runtime alarm setpoint (parameter 07). For
example, the default Battery Test Length is 15% of 2
minutes (P-07 default), which equals 0.3 minutes (18
seconds). Range of values: 5-25.
The date on which the first battery test will start,
formatted as mm.dd (month.day). Make sure that you
also set the Date (parameter 90). Setting parameter 76
to "0.00" disables the periodic battery test. Range of
values: 0.00 (Disable periodic battery test) or 01.01-
12.31 (Date of first test).
If this parameter is set to "0," it disables two parts of the
front panel key TEST: the battery test, and the internal
bypass test. If this is set to "1," you can test the batteries
on demand by pressing the front panel TEST keys. See
Section 202 for a complete description of the front panel
key TEST. Choices: 0 (Disable) or 1 (Enable).
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