SECTION III
Operation
Page 3.7
BP+2.9X
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3.4 Digital Monitoring Panel (continued)
3.4.2 Message Screens (continued)
3.4.2.3
Input Current:
This is a readout of the input current,
measured in amps per phase.
3.4.2.4
Bypass Voltage
This is a readout of the bypass voltage between
phases.
3.4.2.5
Frequencies/Temperature
A readout of the input and output frequency
(Hz) and the inlet temperature (°C).
3.4.2.6
Link Voltage:
A display of the DC link (battery) voltage, battery current and maximum
output crest factor of the load on the UPS.
•
Link voltage
-
243 (405)* VDC ±10%. If there is an increase to about 246
(410) VDC, it indicates the batteries are being charged. If the voltage goes
above 256(426) VDC, the rectifier will shut down. (These values are subject
to change according to battery type.)
•
Battery Amps
-
A positive number
indicates battery charging; a negative
number indicates discharging (possibly
because UPS is operating on battery
power).
•
Max Out CF
-
Displays maximum output crest factor of the load on the UPS
* Numbers in parenthesis are for 37.5-300 kVA; without parenthesis for 15-30 kVA.
Input Van
Input Vbn
Input Vcn
Bypass Vab
Bypass Vbc
Bypass Vca
Input Freq
Output Freq
Inlet Temp
Link Voltage
Battery Amps
Max Out CF