EA660 Modular UPS
User manual & Operation explain
44
AC R OVER VOLT
R phase’
s input over
voltage
AC S OVER VOLT
S phase’
s input over
voltage
AC T OVER VOLT
T phase’
s input over
voltage
1.check the AC input line-line voltage at the top of
the MCCB.
2.check the UPS AC input line- line voltage between
the terminals’
top.
3.check the UPS AC input line- line voltage between
the terminals’
bottom.
AC R OWE VOLT
R phase AC input voltage
low
AC S OWE VOLT
S phase AC input voltage
low
AC T OWE VOLT
T phase AC input voltage
low
1.Check the input MCCB of AC input whether shut off
or not..
2.check the AC input line-line voltage at the top of
the MCCB.
3.check the UPS AC input line- line voltage between
the terminals’
top.
4.check the UPS AC input line- line voltage between
the terminals’
bottom.
UPS R OVER VOLT
R ph inverter output over
voltage
UPS S OVER VOLT
S ph inverter output over
voltage
UPS T OVER VOLT
T ph inverter output over
voltage
UPS R OWE VOLT
R ph inverter output low
voltage
UPS S OWE VOLT
S ph inverter output low
voltage
UPS T OWE VOLT
T ph inverter output low
voltage
1
、
check the monitiored line-line voltage of the
modules in the screen
2
、
check the modules’
status
BYP R OVER VOLT
R ph byoass input over
voltage
BYP S OVER VOLT
S ph byoass input over
voltage
BYP T OVER VOLT
T ph byoass input over
voltage
1
、
check the byass input line-line voltage at the top
of the MCCB.
2. .check the byapss input line- line voltage between the
terminals’
top.
3.check the byapss input line-line voltage between
the terminals’
bottom.
BYP R OWE VOLT
R ph byoass input low
voltage
BYP S OWE VOLT
S ph byoass input low
voltage
BYP T OWE VOLT
T ph byoass input low
voltage
1.Check the byapss input line-line voltage of
MCCB whether shut off or not..
2.check the byapss input line-line voltage at the top
of the MCCB.
3.check the bypass input line- line voltage between the
terminals’
top.
4.check the bypass input line- line voltage between the
terminals’
bottom.
Events record
Meanings
Trouble shooting
R OVER LOAD
R ph output overloaded
S OVER LOAD
S ph output overloaded
1. check ouput current of the load at the monitored
detailed screenwthether is beyond the system’
s