Alpha Technologies CFR 1500, CFR 2000, CFR 2500, CFR 3000 - Manual (Page 33)

Manual Self-test
Press (and hold for several seconds) the “MANUAL START” switch, located on
the Standard Interface Panel, when the UPS is running on AC line power (“LINE
PRESENT” LED ON). The unit will test the backup capabilities of the UPS for
approximately one minute (“TEST” LED ON). Both the “LINE PRESENT” and “LINE
FAILURE” LEDs will be ON. If a problem is detected, the UPS will resume LINE
PRESENT operation, without interruption to the output, and light the “SERVICE” LED.
Audible Alarm OFF
Press the “ALARM OFF” switch, located on the Standard Interface Panel, to
cancel the audible alarm which may activate when first starting the UPS. The alarm,
along with the front panel “LOW BATTERY WARNING” LED, indicates that the UPS
batteries are low. The batteries will recharge within several hours of operation.
Manual Start (No AC line power)
Press the “Manual Start” switch to start the UPS from battery power. The UPS will
start even though AC line power is not available (“LINE PRESENT” LED OFF).
4.1 Start-up and Test
4. OPERATION
26
5.7 Output Parameters, continued
Current
Output Current #1 displays the true RMS current on N. If there are no 120 V
loads connected to N-L2, then this current represents the 120 V loads on N-L1 plus
any equipment connected to the 120 V output receptacles.
Output Current #2 displays the true RMS current on L2. This includes the
current flowing in L2 of the output terminal block, plus the current flowing in all 208
VAC or 240 VAC receptacles.
NOTE: The total RMS current displayed for L1 and L2 may be different
than
the sum of the individual currents flowing in each output
receptacle and terminal block. This is because of potentially nonlinear
loads which have
currents that are not inphase with
each other.
Volt Amps
The apparent output power of the UPS is calculated by multiplying the output
voltage by the output current. The total UPS output VA may not equal the sum VA
drawn from the connected equipment. This is due to different power factor rating for
each piece of equipment.
Power in Watts
The real output power of the UPS is calculated in Watts. This will be equal to
the sum of the real output power for all equipment connected to the UPS.
Power Factor
This expression refers to the ratio of true power (power actually consumed)
to apparent power (simple product of voltage and current) at the output of
the UPS.
Line Frequency
This term refers to the frequency (in Hertz) of the AC Line as measured at the
output of the UPS.
5. RS-232 TERMINAL COMMUNICATION
39
Fig. 32
Output Parameter Measurement Points