Alpha Technologies XM3-HP Series - Technical Manual - Manual (Page 88)

88 017-882-B0-001 Rev. C2 (10/2013)
3.0
Operation
3.7 Automatic Performance Test
Automatic Self Test: An automatic Self Test is periodically performed to verify the state of the batteries
and the inverter circuitry. The automatic test feature has several programmable parameters that determine
the frequency and duration of automatic tests. A running test may be halted manually by pressing the TEST
button a second time.
The automatic test feature is on by default. To turn auto-test off, change Test Interval to 0 days in the POWER
CONFIG Menu. Auto-test may be enabled at any time by changing the test interval to any numerical value
(excluding “0”). The default test interval is 30 days.
The test sequence process:
• Begins with a check to verify the batteries are attached and the battery circuit breaker is closed. If the
batteries are discharged or not connected, the Power Supply does not attempt to operate in inverter
mode, preventing a drop of the load.
• Next, the Power Supply switches to standby mode for a pre-programmed period. Successful completion
of a test sequence indicates the unit is operating normally in standby mode, the battery voltage did not
drop below a preset threshold and the output was stable throughout the test. Failure of test is indicated
by a Self Test Fail alarm, which can be cleared by subsequently running a successful test for at least
one minute.
In addition to automatic testing, the operator can manually initiate a Self Test. A running test may be halted
at any time by pressing the Self Test switch on the front panel (below the OUTPUT and ALARM LEDS on
the Inverter Module) or from the PWR CONFIG menu. The status monitoring card allows a Self Test to be
initiated via the webpage as well.
Test Inhibit: The Test Inhibit command prevents an automatic test scheduled to occur in the next week. This
command is useful if periodic maintenance of the Power Supply is scheduled close to the next scheduled
automatic test.
Use this feature when inclement weather might cause a utility failure. The Test Inhibit command affects an
automatic test scheduled to run in the next seven days. Multiple issues of the Test Inhibit command result in
the deferral of the next automatic test until at least seven days after the last request. This command has no
effect if an automatic test is not scheduled to take place in the next week. Starting a test manually overrides
the Test Inhibit command.