15
1)
If the bypass is abnormal, you can not remove the UPS without interruption. You must cut off the
load and shut down the system first.
2)
Make sure the bypass setting is enabled in each UPS and then turn off the running system. All UPSs
will transfer to Bypass mode. Remove all the maintenance bypass covers and set the maintenance
switches from “UPS” to “BPS”. Turn off all the input breakers and battery breakers in parallel system.
3)
Turn off the output breaker and remove the parallel cable and share current cable of the UPS which
you want to remove. Then, remove it from parallel system.
4)
Turn on the input breaker of the remaining UPS and the system will transfer to Bypass mode.
Set
the maintenance switches from “BPS” to “UPS and put the maintenance bypass covers back.
5)
Turn on the remaining UPS according to the previous section.
Warning:
(Only for the parallel system)
● Before turning on the parallel system to activate inverter, make sure that all of the maintenance
switches in each unit are at the same position.
● When parallel system is turned on to work-through inverter, please do not operate the maintenance
switch of any unit.
3-6. Abbreviation & Meaning in LCD Display
Abbreviation
Display content
Meaning
ENA
Enable
DIS
Disable
ATO
Auto
BAT
Battery
NCF
Normal mode (not CVCF mode)
CF
CVCF mode
SUB
Subtract
ADD
Add
ON
On
OFF
Off
FBD
Not allowed
OPN
Allow
RES
Reserved
N.L
Neutral line loss
CHE
Check
OP.V
Output voltage
PAR
Parallel, 001 means the first UPS
AN
The first phase
BN
The second phase
CN
The third phase
AB
The first line
